WO2019082396A1 - 電荷輸送性ポリマー及び有機エレクトロニクス素子 - Google Patents
電荷輸送性ポリマー及び有機エレクトロニクス素子Info
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- WO2019082396A1 WO2019082396A1 PCT/JP2017/038978 JP2017038978W WO2019082396A1 WO 2019082396 A1 WO2019082396 A1 WO 2019082396A1 JP 2017038978 W JP2017038978 W JP 2017038978W WO 2019082396 A1 WO2019082396 A1 WO 2019082396A1
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Definitions
- the present disclosure relates to a charge transporting polymer, a charge transporting material, an ink composition, an organic layer, an organic electronic device, an organic electroluminescent device, a display device, a lighting device, and a display device.
- Organic electronic devices are devices that perform electrical operations using organic substances, and are expected to exhibit features such as energy saving, low cost, and flexibility, and they are noted as a technology to replace conventional inorganic semiconductors based on silicon. It is done.
- organic electronic element examples include an organic electroluminescent element (organic EL element), an organic photoelectric conversion element, and an organic transistor.
- organic EL element organic electroluminescent element
- organic photoelectric conversion element organic photoelectric conversion element
- organic transistor organic transistor
- organic EL devices are attracting attention, for example, as large-area solid-state light source applications that can replace incandescent lamps or gas-filled lamps.
- it is attracting attention as a leading self-luminous display to replace liquid crystal displays (LCDs) in the flat panel display (FPD) field, and its commercialization is in progress.
- LCDs liquid crystal displays
- FPD flat panel display
- Organic EL elements are roughly classified into low molecular weight organic EL elements and high molecular weight organic EL elements from the organic materials used.
- a high molecular weight material is used as the organic material
- a low molecular weight material is used in the low molecular weight organic EL element.
- an organic EL element manufactured by a wet process using a polymer material has a feature that cost reduction and large area formation are easy.
- conventional polymeric materials are desired to be further improved in wet process characteristics such as solubility in solvents and curability.
- the present disclosure provides charge transport polymers, charge transport materials, and ink compositions suitable for wet processes.
- the present disclosure also provides an organic layer excellent in solvent resistance, and an organic electronic device, an organic EL device, a display device, a lighting device, and a display device including the organic layer.
- One embodiment comprises a molecular chain and an end group attached to the molecular chain, wherein the end group comprises an end group P comprising a polymerizable functional group and an aromatic carbon substituted by an electron withdrawing substituent.
- a terminal group EW containing a hydrogen group, the terminal group P containing a terminal group represented by the following formula (P1), and a carbon atom constituting a ring of the aromatic hydrocarbon group is bonded to the molecular chain
- the electron withdrawing substituent is bonded to a carbon atom of 1 + 2 n (n is an integer of 1 or more) when the carbon atom number to be assigned is 1 and the adjacent carbon atoms are sequentially numbered.
- the present invention relates to a charge transporting polymer.
- Ar represents a substituted or unsubstituted aromatic ring group
- L represents a linking group
- PG represents a substituted or unsubstituted polymerizable functional group.
- a and x each independently represent 0 or 1
- y represents an integer of 1 or more.
- the formula (P1) does not include a partial structure represented by —Ar—CH 2 —O— (CH 2 ) n —O— (n is an integer of 1 to 6).
- the charge transporting polymer contains 3 to 60% by mole of a structural unit including the terminal group, based on the total structural units of the charge transporting polymer.
- the electron withdrawing substituent is selected from the group consisting of a halogen group, a halogen substituted alkyl group, a nitro group, a cyano group, a sulfonic acid group, and a sulfoxide group Include one or more of the
- any of the charge transporting polymers contains 15 to 95% by mole of the end group EW based on the end group.
- the polymerizable functional group is selected from the group consisting of a group having a carbon-carbon multiple bond, a group having a small ring, and a heterocyclic group. Including more than species.
- any one of the charge transporting polymers is one selected from the group consisting of substituted or unsubstituted aromatic amine structure, carbazole structure, thiophene structure, bithiophene structure, benzene structure, and fluorene structure Including the above structure.
- any one of the charge transporting polymers has a structure branched in three or more directions.
- Another embodiment relates to a charge transportable material containing any of the charge transport polymers described above.
- Another embodiment relates to an ink composition containing any of the charge transporting polymer or the charge transporting material and a solvent.
- Another embodiment relates to an organic layer formed using any of the charge transporting polymer, the charge transporting material, or the ink composition.
- Another embodiment relates to an organic electronic device comprising the organic layer.
- Another embodiment relates to an organic electroluminescent device comprising said organic layer.
- a display device comprising the organic electroluminescent device; a lighting device comprising the organic electroluminescent device; a lighting device; and a liquid crystal device as a display means , The display device.
- a charge transportable polymer, a charge transportable material, and an ink composition suitable for a wet process are provided. Further, according to the present disclosure, an organic layer excellent in solvent resistance, and an organic electronic device, an organic EL device, a display device, a lighting device, and a display device including the organic layer are provided.
- the charge transporting polymer comprises a molecular chain and an end group bonded to the molecular chain, the end group comprising an end group P comprising a polymerizable functional group, and an electron withdrawing substitution. And an end group EW comprising an aromatic hydrocarbon group substituted by a group.
- the terminal group P includes a terminal group represented by Formula (P1) described later.
- the electron withdrawing substituent is: It is bonded to a carbon atom of 1 + 2 n (n is an integer of 1 or more).
- the charge transporting polymer is a polymer having the ability to transport a charge.
- polymer also includes so-called “oligomers” having a small number of structural units.
- the charge transporting polymer has an end group P containing a polymerizable functional group at the end of the molecular chain.
- the terminal group P may contain any group other than the polymerizable functional group. Examples of the terminal group P include “polymerizable functional group”, “aromatic ring group substituted by a group containing a polymerizable functional group”, and the like.
- the terminal group P contains at least a terminal group represented by Formula (P1) described later.
- a "polymerizable functional group” is a functional group which can form a bond with each other by the addition of heat and / or light.
- the charge transporting polymer exhibits curability by containing a polymerizable functional group.
- a coating film formed using a charge transporting polymer is cured to form an organic layer (also referred to as a “cured film” in the present disclosure), which is necessary for laminating an upper layer to the organic layer by a wet process Solvent resistance can be provided.
- the hole transporting layer has solvent resistance. This makes it possible to form the light emitting layer as the upper layer thereof using an ink composition or the like without dissolving the hole transport layer.
- the light emitting layer is often coated with an aromatic hydrocarbon solvent. Therefore, the charge transporting polymer is preferably a charge transporting polymer capable of forming a charge transporting layer which is difficult to dissolve even when immersed in an aromatic hydrocarbon solvent such as toluene.
- the charge transporting polymer component is in the ink composition of the upper layer material. May elute.
- the degree of elution of the components of the charge transportable polymer it can be one of the causes such as an increase in drive voltage of the organic electronic device, a luminous efficiency, and a decrease in lifetime.
- a group having a carbon-carbon multiple bond for example, vinyl group, allyl group, butenyl group, ethynyl group, acryloyl group, acryloyloxy group, acryloylamino group, methacryloyl group, methacryloyloxy group, methacryloylamino Group, a vinyloxy group, a vinylamino group etc., a group having a small ring (eg, a cyclic alkyl group such as a cyclopropyl group, a cyclobutyl group etc .; a cyclic ether group such as an epoxy group (oxiranyl group), an oxetane group (oxetanyl group) Cyclic thioether groups such as episulfide groups; cyclic ester groups such as diketene groups and lactone groups; cyclic amide groups such as lactam groups; heterocyclic groups (for example, vinyl group, allyl group,
- the polymerizable functional group preferably contains one or more selected from the group consisting of a group having a carbon-carbon multiple bond, a group having a small ring, and a heterocyclic group, and has a carbon-carbon double bond. It is more preferable to include one or more selected from the group consisting of a group, a cyclic ether group, and a heterocyclic group.
- a vinyl group, an acryloyl group, a methacryloyl group, an epoxy group, an oxetane group, a pyrrole-yl group and a thiophene-yl group are preferable, and the solubility and the curing property of the charge transporting polymer From the viewpoint of the above, a vinyl group, an oxetane group and a thiophene-yl group are more preferable.
- the polymerizable functional group may be a substituted or non-substituted polymerizable functional group, and as a substituent that the polymerizable functional group can have, for example, an alkyl group having 1 to 6 carbon atoms such as a methyl group or an ethyl group Can be mentioned.
- the terminal group P is a "polymerizable functional group".
- the terminal group P is “an aromatic ring group substituted by a group containing a polymerizable functional group”.
- the polymerizable functional group and the aromatic ring group are connected via a linking group such as an alkylene chain (for example, 1 to 10 carbon atoms) It is preferred that they be linked.
- a linking group such as an alkylene chain (for example, 1 to 10 carbon atoms) It is preferred that they be linked.
- a hydrophilic electrode such as ITO
- it is preferably bonded through a hydrophilic linking group such as ethylene glycol chain or diethylene glycol chain. Is preferred.
- the monomer used to introduce the polymerizable functional group into the charge transporting polymer, an ether bond, an ester bond, etc., between the polymerizable functional group and the aromatic ring group And may have a linking group containing one or more selected from
- the "polymerizable functional group” itself or "a group obtained by combining the polymerizable functional group with a linking group such as an alkylene chain or an ether bond” is referred to as a "group containing a polymerizable functional group”.
- groups exemplified in WO 2010/140553 can be mentioned.
- aromatic ring group is preferably an aromatic ring group having 2 to 30 carbon atoms.
- aromatic rings include aromatic hydrocarbons and aromatic heterocycles.
- examples of the aromatic ring include a single ring, a fused polycyclic aromatic hydrocarbon, and a fused polycyclic aromatic heterocycle.
- examples of the aromatic hydrocarbon include benzene, naphthalene, anthracene, tetracene (naphthacene), fluorene, phenanthrene, 9,10-dihydrophenanthrene, triphenylene, pyrene, chrysene, perylene, triphenylene, pentacene, benzopyrene and the like.
- aromatic heterocyclic ring pyridine, pyrazine, quinoline, isoquinoline, carbazole, acridine, phenanthroline, furan, pyrrole, thiophene, oxazole, oxadiazole, thiadiazole, triazole, benzooxazole, benzooxadiazole, benzothiadiazole, benzotriazole And benzothiophene.
- the aromatic ring may have a structure in which two or more selected from independent single rings or fused rings are bonded. Examples of the structure include biphenyl, terphenyl, triphenylbenzene, bithiophene and the like.
- the aromatic ring group may have a substituent, and examples of the substituent include R in the structural unit L described later (with the exception of the group containing a polymerizable functional group).
- the aromatic ring is preferably an aromatic hydrocarbon, more preferably benzene, in view of the commercial availability and the ease of synthesis of the monomer for introducing the terminal group P.
- the terminal group P contains at least a terminal group represented by the following formula (P1).
- the terminal group represented by formula (P1) is a preferable group from the viewpoint of obtaining good heat resistance.
- Ar represents a substituted or unsubstituted aromatic ring group
- L represents a linking group
- PG represents a substituted or unsubstituted polymerizable functional group.
- a and x each independently represent 0 or 1
- y represents an integer of 1 or more.
- the formula (P1) does not include a partial structure represented by —Ar—CH 2 —O— (CH 2 ) n —O— (n is an integer of 1 to 6).
- "*" Represents a binding site with another structure in the present disclosure.
- the upper limit of y is determined by the structure of Ar.
- y is 5 or less, preferably 2 or less.
- the end group represented by the formula (P1) does not include a structure represented by —Ar—CH 2 —O— (CH 2 ) n —O— (n is an integer of 1 to 6).
- n is an integer of 1 to 6
- the terminal group represented by formula (P1) contains a structure represented by -Ar-CH 2 -O- (CH 2 ) n -O-, -CH 2 -O- contained in this structure is The heating tends to break the bond between -CH 2 -O-.
- the terminal group represented by the formula (P1) does not include the structure represented by -Ar-CH 2 -O-.
- the terminal group represented by the formula (P1) is considered to contribute to the improvement of the heat resistance of the organic layer.
- the end group represented by a following formula (P2) is mentioned as an example of the end group represented by Formula (P1).
- the terminal group represented by formula (P2) is a preferable group from the viewpoint of obtaining good heat resistance.
- Ar represents a substituted or unsubstituted aromatic ring group having 2 to 30 carbon atoms
- X represents a divalent group represented by any one of the following formulas (X1) to (X10)
- Y represents an alkylene group having 1 to 10 carbon atoms
- PG represents a substituted or unsubstituted polymerizable functional group.
- Each of a to c independently represents 0 or 1, and d represents 1 or 2. However, when d is 2, a is 1.
- each R independently represents a hydrogen atom, a linear, cyclic or branched alkyl group having 1 to 22 carbon atoms, or an aryl or heteroaryl group having 2 to 30 carbon atoms.
- X is preferably a group represented by (X1).
- the terminal group P preferably contains a group satisfying the following in formula (P2).
- Ar is an aromatic hydrocarbon group
- X is a group represented by (X1)
- Y is an alkylene group having 1 to 6 carbon atoms
- PG is a group having a substituted or unsubstituted small ring Yes, a to d are 1.
- Ar is preferably a benzene ring.
- PG is preferably a substituted or unsubstituted cyclic ether group, more preferably a substituted or unsubstituted oxetane group, or a substituted or unsubstituted epoxy group, a substituted or unsubstituted oxetane group Is preferred. In this embodiment, better solubility tends to be obtained.
- the terminal group P preferably contains a group satisfying the following in formula (P2).
- Ar is an aromatic hydrocarbon group
- PG is a group having a substituted or unsubstituted carbon-carbon multiple bond
- a and d are 1 and b and c are 0.
- Ar is preferably a benzene ring.
- PG is preferably a group having a substituted or unsubstituted carbon-carbon double bond, and more preferably a substituted or unsubstituted vinyl group.
- the terminal group P preferably contains a group satisfying the following in formula (P2).
- PG is a substituted or unsubstituted heterocyclic group, a to c are 0, and d is 1.
- PG is preferably a substituted or unsubstituted pyrrol-yl group or a substituted or unsubstituted thiophene-yl group, and more preferably a substituted or unsubstituted thiophene-yl group.
- the terminal group P is a group different from the terminal group EW, and by having both groups at the terminal, the solubility in a solvent is improved and the charge transportable polymer exhibits excellent curability.
- the ratio of the end groups P is 5 moles based on the total of the end groups contained in the charge transport polymer. % Or more is preferable, 10 mol% or more is more preferable, and 20 mol% or more is still more preferable.
- the excellent solvent resistance of the organic layer can prevent the components of the charge transport polymer from eluting into the ink composition when forming the upper layer.
- the ratio of the terminal group P is preferably 85 mol% or less, 80 mol based on the total of the terminal groups contained in the charge transporting polymer. % Or less is more preferable, and 75 mol% or less is more preferable.
- the above range is also a preferable range from the viewpoint of preventing the charge transportability from being disturbed by the linking group formed by the bonding of the polymerizable functional groups. If the charge transportability is impeded, the drive voltage of the organic electronic device tends to increase.
- Examples of the method of confirming the curability of the charge transporting polymer and the solvent resistance of the organic layer include (1) residual film rate test and (2) elution amount test.
- Residual film rate test immerses the organic layer which is a cured film formed using the charge transporting polymer in a solvent, and confirms the degree of curability and solvent resistance from the decreasing rate of the film thickness of the organic layer It is a method.
- the elution amount test is carried out by immersing the organic layer which is a cured film formed using the charge transporting polymer in a solvent and eluting the amount of the component of the charge transporting polymer in the solvent, and curing and solvent resistance It is a method to check the degree.
- the residual film ratio can be determined by the ratio of the measured values of the film thickness of the organic layer or the ratio of the measured values of the absorbance of the organic layer. (1) Details of the residual film rate test will be described later.
- the residual film rate is preferably 50% or more, more preferably 80% or more, still more preferably 90% or more, and particularly preferably 95% or more.
- the organic layer preferably has at least solvent resistance to toluene. More preferably, it has solvent resistance to toluene and anisole, or toluene and butyl benzoate. Therefore, in the (1) residual film rate test and the (2) elution amount test, it is preferable to use at least toluene as a solvent.
- the proportion of the terminal group P represented by the formula (P1) is preferably 50 mol% or more, more preferably 70 mol% or more, 90 mol based on the terminal group P. % Or more is more preferable.
- the upper limit is not particularly limited, and 100 mol% is particularly preferable.
- End group EW containing an aromatic hydrocarbon group substituted by an electron-withdrawing substituent The charge transporting polymer has an end group EW containing an aromatic hydrocarbon group substituted by an electron withdrawing substituent at the end of the molecular chain.
- the electron-withdrawing substituent is 1 + 2n (n when the carbon atom number bonded to the molecular chain is 1 and the adjacent carbon atoms are sequentially numbered, with respect to the carbon atom constituting the ring of the aromatic hydrocarbon group. Is an integer of 1 or more)).
- the “electron-withdrawing substituent” is a substituent that is more likely to attract an electron from the bonding atom side than a hydrogen atom.
- the charge transportable polymer has excellent solubility in a solvent by containing an aromatic hydrocarbon group in which a hydrogen atom bonded to a specific carbon atom is substituted by an electron withdrawing substituent at the end of a molecular chain. Show. It is speculated that the presence of an electron withdrawing substituent attached to a specific carbon atom improves the solubility of the charge transporting polymer.
- a charge transport polymer is dissolved in a solvent to make an ink composition.
- the solubility of the charge transporting polymer decreases, and the dissolution time to the solvent increases, the concentration decreases, or in some cases, insolubilization occurs.
- an additional process such as heating, an increase in working time, and the like occur at the time of preparation of the ink composition, and the productivity is lowered.
- a halogen group As an electron withdrawing substituent, a halogen group, a halogen substituted alkyl group, a nitro group, a cyano group, a sulfonic acid group, a sulfoxide group etc. are mentioned, for example. However, it is not limited to these.
- the halogen group include a fluoro group, a chloro group, a bromo group and an iodo group.
- the carbon number of the alkyl group is preferably 1 to 6, more preferably 1 to 3, and still more preferably 1.
- the halogen group is preferably a fluoro group, and the halogen-substituted alkyl group is preferably a fluoroalkyl group, from the viewpoint of the strength for attracting electrons.
- the electron withdrawing substituent is preferably a fluoro group, a fluoroalkyl group, a sulfonic acid group, or a sulfoxide group, and is preferably a fluoro group or a fluoroalkyl group. More preferred is a fluoroalkyl group.
- the end group EW comprises a plurality of electron withdrawing substituents
- the plurality of electron withdrawing substituents may be identical to or different from one another.
- aromatic hydrocarbon group is preferably an aromatic hydrocarbon group having 6 to 30 carbon atoms. Examples of aromatic hydrocarbons are as described above. When the aromatic hydrocarbon is a fused polycyclic aromatic hydrocarbon, it is preferable that all of the rings constituting the aromatic hydrocarbon be a benzene ring.
- the carbon number of the aromatic hydrocarbon group is 6 or more. From the viewpoint of the commercial availability and the ease of synthesis of the monomer for introducing the end group EW, the carbon number of the aromatic hydrocarbon group is preferably 18 or less, and from the viewpoint of solubility And 12 or less is more preferable, and 10 or less is more preferable. As the carbon number of the aromatic hydrocarbon group is smaller, the solubility tends to be improved.
- the electron withdrawing substituent is bonded to the aromatic hydrocarbon group, and in the charge transporting polymer, the aromatic hydrocarbon group is bonded to the molecular chain.
- the bonding position of the aromatic hydrocarbon group and the molecular chain is not limited.
- the electron-withdrawing substituent is 1 + 2n (n when the carbon atom number bonded to the molecular chain is 1 and the adjacent carbon atoms are sequentially numbered, with respect to the carbon atom constituting the ring of the aromatic hydrocarbon group. Is an integer of 1 or more)).
- the upper limit of n is determined according to the number of carbon atoms constituting the ring of the aromatic hydrocarbon group. In the present disclosure, a number given to a carbon atom is also referred to as a “substituted position number”. How to assign replacement position numbers follows.
- each adjacent carbon atom is sequentially numbered.
- terminal group EW at least one electron withdrawing substituent is attached to a carbon atom at substitution position number 1 + 2n.
- the position of substitution position number 1 + 2n corresponds to a position where the localized structure of electrons can not be described when describing the resonance structure of the end group EW.
- the resonance structure of the end group EW is described in the state where an aromatic hydrocarbon group is bonded to a molecular chain capable of donating an electron to the aromatic hydrocarbon group.
- the resonance structure of the end group EW is described in a state where the structure at the end of the molecular chain is an aromatic ring (eg, a benzene ring) and an aromatic hydrocarbon group is bonded to the aromatic ring.
- An example of the resonance structure is shown below.
- EWG shows an electron withdrawing substituent (Electron Withdrawing Group).
- substitution position number 2n When describing the resonance structure of the end group EW, when the substitution position number of the carbon atom bonded to the molecular chain is 1, substitution position number 2n (n is an integer of 1 or more) (that is, 2n is an even number) Can indicate the localized structure.
- substitution position number 2n (n is an integer of 1 or more) (that is, 2n is an even number)
- substitution position number 2n (n is an integer of 1 or more) (that is, 2n is an even number)
- substitution position number 1 + 2n When a localized structure can not be described, when the substitution position number of the carbon atom bonded to the molecular chain is 1, substitution position number 1 + 2n (n is an integer of 1 or more) (i.e. 1 + 2n is an odd number) Can not show localized structures.
- the presence or absence of the substituent to the carbon atom of the substitution position number 2n (n is an integer of 1 or more) of the aromatic hydrocarbon group is not limited. In one embodiment, in consideration of the influence on solubility, the carbon atom of the substitution position number 2n (n is an integer of 1 or more) of the aromatic hydrocarbon group does not have a substituent.
- the terminal group EW has a structure having an electron withdrawing substituent at a carbon atom of substitution position number 1 + 2n (n is an integer of 1 or more) of the aromatic hydrocarbon group.
- Specific examples of the terminal group EW include groups represented by the following formulas (EW1) to (EW5).
- the terminal group EW is not limited to these, includes an aromatic hydrocarbon group substituted by an electron-withdrawing substituent, and the substitution position number 1 + 2n (n is an aromatic hydrocarbon group)
- the number of electron withdrawing substituents is preferably 2 or more.
- a group represented by any one of formulas (EW1) to (EW5) is preferable, a group represented by formula (EW1) or formula (EW2) is more preferable, and formula (EW2) The group represented by is more preferable.
- EWG represents an electron-withdrawing substituent
- EWG include the following substituents.
- R represents an alkyl group, and the carbon number of the alkyl group is, for example, 1 to 6. However, it is not limited to these.
- EWG is preferably an -X or -CX 3.
- X is preferably -F.
- end groups EW include: However, it is not limited to these.
- the proportion of the end groups EW is preferably 15 mol% or more, more preferably 20 mol% or more based on the total of the terminal groups contained in the charge transporting polymer. Preferably, 25 mol% or more is more preferable. Furthermore, when it is desired to increase the selection likelihood of the solvent, 40 mol% or more is preferable, 75 mol% or more is more preferable, and 85 mol% or more is still more preferable. When the charge transporting polymer has excellent solubility, a sufficient margin for preparation conditions of the ink composition can be secured.
- the proportion of the end group EW is preferably 95 mol% or less, preferably 90 mol% or less, based on the number of moles of the terminal of the molecular chain of the charge transporting polymer. More preferably, 80 mol% or less is more preferable.
- (1) dissolution time test and (2) dissolution concentration test can be mentioned.
- (1) Dissolution time test is a method of dissolving a charge transporting polymer in a solvent and evaluating the time required for dissolution.
- (2) The dissolution concentration test is a method of evaluating the concentration at which the charge transporting polymer can be dissolved in a solvent. Details of (1) dissolution time test and (2) dissolution concentration test will be described later.
- the charge transporting polymer preferably has at least good solubility in toluene.
- toluene and anisole, or toluene and butyl benzoate More preferably, it has good solubility in toluene and anisole, or toluene and butyl benzoate, and still more preferably has good solubility in toluene, anisole and butyl benzoate. Therefore, in the (1) dissolution time test and (2) dissolution concentration test, at least toluene is used as a solvent. Toluene and anisole and / or butyl benzoate may be used.
- the charge transporting polymer may be linear or branched with a branched structure.
- the charge transporting polymer preferably includes at least a divalent structural unit L having charge transportability and a monovalent structural unit T, and may further include a trivalent or higher structural unit B constituting a branch.
- the charge transporting polymer preferably has charge transporting properties and at least includes a trivalent or higher structural unit B constituting a branch and a monovalent structural unit T, and further includes a divalent structural unit. May be.
- the molecular chain has a chain-like structure containing a divalent structural unit and / or a trivalent structural unit.
- the branched charge transporting polymer is excellent in heat resistance and can introduce a large number of terminal groups, and therefore exhibits good solubility and curability.
- the charge transporting polymer may contain only one type of each structural unit, or may contain multiple types of each. In the charge transporting polymer, the structural units are bonded to each other at the “monovalent” to “trivalent or higher” bonding sites.
- L represents a structural unit L
- T represents a structural unit T
- B represents a structural unit B
- * represents a binding site to another structural unit.
- a plurality of L may be the same structural unit as one another or structural units different from one another. The same applies to T and B.
- the charge transporting polymer preferably has a charge transporting bivalent structural unit. In one embodiment, the charge transporting polymer preferably has a structure branched in three or more directions, that is, has a structural unit B.
- the charge transporting polymer preferably contains one or more structures selected from the group consisting of an aromatic amine structure, a carbazole structure, a thiophene structure, a bithiophene structure, a benzene structure, and a fluorene structure. These structures are preferably contained in structural unit L or structural unit B. Moreover, it may be contained in both the structural unit L and the structural unit B. By including any of these structures, charge transportability, particularly hole transportability is improved.
- the structural unit L is a divalent structural unit having charge transportability.
- the structural unit L should just contain the atomic group which has the ability to transport an electric charge, and it is not specifically limited.
- the structural unit L may be substituted or unsubstituted aromatic amine structure, carbazole structure, thiophene structure, bithiophene structure, fluorene structure, benzene structure, biphenylene structure, terphenylene structure, naphthalene structure, anthracene structure, tetracene structure, phenanthrene Structure, dihydrophenanthrene structure, pyridine structure, pyrazine structure, quinoline structure, isoquinoline structure, quinoxaline structure, acridine structure, diazaphenanthrene structure, furan structure, pyrrole structure, pyrrole structure, oxazole structure, oxadiazole structure, thiazole structure, thiadiazole structure, triazole Structure, benzothi
- the structural unit L is a substituted or unsubstituted aromatic amine structure, carbazole structure, thiophene structure, bithiophene structure, benzene structure, fluorene structure, and pyrrole structure from the viewpoint of obtaining excellent hole transportability.
- the structural unit L is selected from the group consisting of a substituted or unsubstituted fluorene structure, a benzene structure, a phenanthrene structure, a pyridine structure, and a quinoline structure from the viewpoint of obtaining excellent electron transportability. It is preferred to include species or more structures.
- the structural unit L is not limited to the following.
- Each R independently represents a hydrogen atom or a substituent.
- each of R independently represents -R 1 , -OR 2 , -SR 3 , -OCOR 4 , -COOR 5 , -SiR 6 R 7 R 8 , a halogen atom, and the above-mentioned polymerizable functional group It is selected from the group consisting of:
- Each of R 1 to R 8 independently represents a hydrogen atom; a linear, cyclic or branched alkyl group having 1 to 22 carbon atoms; or an aryl or heteroaryl group having 2 to 30 carbon atoms.
- the aryl group is an atomic group obtained by removing one hydrogen atom from an aromatic hydrocarbon.
- the heteroaryl group is an atomic group obtained by removing one hydrogen atom from an aromatic heterocycle.
- the alkyl group may be further substituted by an aryl group or heteroaryl group having 2 to 20 carbon atoms, and the aryl group or heteroaryl group may be further substituted to a linear, cyclic or cyclic group having 1 to 22 carbon atoms. It may be substituted by a branched alkyl group.
- R may be selected according to the function required for the charge transporting polymer without particular limitation. it can. For example, even when R is a halogen atom, the charge transporting polymer exhibits good solubility.
- R is preferably a hydrogen atom, a halogen atom, an alkyl group, an aryl group, or an alkyl-substituted aryl group, and from the viewpoint of improving solubility, more preferably an alkyl group.
- Ar represents an arylene group or heteroarylene group having 2 to 30 carbon atoms.
- An arylene group is an atomic group obtained by removing two hydrogen atoms from an aromatic hydrocarbon.
- the heteroarylene group is an atomic group obtained by removing 2 hydrogen atoms from an aromatic heterocycle.
- Ar is preferably an arylene group, more preferably a phenylene group.
- the aromatic hydrocarbon includes a single ring, a condensed ring, or a polycyclic ring in which two or more selected from a single ring and a condensed ring are bonded via a single bond.
- the aromatic heterocyclic ring includes a single ring, a condensed ring, or a polycyclic ring in which two or more selected from a single ring and a condensed ring are bonded via a single bond.
- the structural unit B is a trivalent or higher structural unit constituting a branched portion when the charge transporting polymer has a branched structure.
- the structural unit B is preferably hexavalent or less, more preferably trivalent or tetravalent, from the viewpoint of improving the durability of the organic electronic device.
- the structural unit B is preferably a unit having charge transportability.
- the structural unit B may be a substituted or unsubstituted aromatic amine structure, a carbazole structure, a fused polycyclic aromatic hydrocarbon structure, and one or two of them from the viewpoint of improving the durability of the organic electronic device. It is selected from structures containing more than species.
- Structural unit B is not limited to the following.
- W represents a trivalent linking group, for example, an arenetriyl group having 2 to 30 carbon atoms or a heteroarenetriyl group.
- An arenetriyl group is an atomic group obtained by removing three hydrogen atoms from an aromatic hydrocarbon.
- the heteroarene triyl group is an atomic group obtained by removing 3 hydrogen atoms from an aromatic heterocycle.
- Ar each independently represents a divalent linking group, and each independently represents, for example, an arylene group or heteroarylene group having 2 to 30 carbon atoms.
- Ar is preferably an arylene group, more preferably a phenylene group.
- Y represents a divalent linking group, and, for example, from R in the structural unit L (with the exception of the group containing a polymerizable functional group), a group having one or more hydrogen atoms, and one more hydrogen atom And divalent groups other than.
- Z represents either a carbon atom, a silicon atom, or a phosphorus atom.
- the benzene ring and Ar may have a substituent, and examples of the substituent include R in the structural unit L.
- the structural unit T is a monovalent structural unit constituting an end of the charge transporting polymer, and is a structural unit including an end group.
- the structural unit T includes at least a structural unit TP containing an end group P and a structural unit TEW containing an end group EW.
- the structural unit T may include any structural unit TO which is different from the structural unit TP and the structural unit TEW.
- the structural unit TO does not include the end group P and the end group EW.
- the structural unit TP is a structural unit containing the end group P.
- the terminal group P described above may be the structural unit TP, and examples of the structural unit TP include a group represented by formula (P1).
- the structural unit TEW is a structural unit comprising the end group EW.
- the end group EW described above may be the structural unit TEW, and examples of the structural unit TEW include a group represented by any one of the formulas (EW1) to (EW5).
- the structural unit TO is not particularly limited, and is selected, for example, from a substituted or unsubstituted aromatic hydrocarbon structure, an aromatic heterocyclic structure, and a structure containing one or more of them.
- the structural unit TO is preferably a substituted or unsubstituted aromatic hydrocarbon structure from the viewpoint of imparting durability without reducing charge transportability, and is preferably a substituted or unsubstituted benzene More preferred is a structure.
- the structural unit TO may have the same structure as the structural unit L except for valence.
- the structural unit T is preferably a substituted or unsubstituted aromatic hydrocarbon structure from the viewpoint of imparting durability without reducing charge transportability, and is preferably a substituted or unsubstituted benzene More preferred is a structure.
- structural unit TO is not limited to the following.
- Each R independently represents a hydrogen atom or a substituent.
- R is each independently selected from the group consisting of -R 1 , -OR 2 , -SR 3 , -OCOR 4 , -COOR 5 , -SiR 6 R 7 R 8 , and a halogen atom.
- R 1 ⁇ R 8 are the same as R 1 ⁇ R 8 in the structural unit L.
- the polymerizable functional group is introduced at least at the end of the charge transportable polymer (that is, the structural unit T).
- the polymerizable functional group may be introduced into a moiety other than the terminal (i.e., the structural unit L or B) or may be introduced into both the terminal portion and the moiety other than the terminal. From the viewpoint of achieving both curability and charge transportability, it is preferable that the resin be introduced only at the terminal part.
- the polymerizable functional group may be introduced into the main chain of the charge transporting polymer or may be introduced into the side chain, and both the main chain and the side chain May be introduced in
- the number of polymerizable functional groups per molecule of charge transporting polymer is preferably 2 or more, and more preferably 3 or more from the viewpoint of obtaining sufficient change in solubility.
- the number of polymerizable functional groups is preferably 1,000 or less, more preferably 500 or less, from the viewpoint of maintaining charge transportability.
- the ratio of the polymerizable functional group is preferably 5 mol% or more, more preferably 10 mol% or more, based on the total of the polymerizable functional group and the terminal group EW. More preferably, it is mole% or more.
- the ratio of the polymerizable functional group is preferably 85 mol% or less, more preferably 80 mol% or less, based on the total of the polymerizable functional group and the end group EW, from the viewpoint of obtaining good charge transportability. And 75 mol% or less is more preferable.
- the content and ratio of the polymerizable functional group per molecule of charge transportable polymer is the charge of the polymerizable functional group used to synthesize the charge transport polymer (for example, the charge of the monomer having the polymerizable functional group)
- the amount can be determined as an average value using an amount ⁇ the number of polymerizable functional groups per monomer), a preparation amount of a monomer corresponding to each structural unit, a mass average molecular weight of the charge transporting polymer, and the like.
- the content of the polymerizable functional group is the ratio of the integral value of the signal derived from the polymerizable functional group to the integral value of the entire spectrum in the 1 H NMR (nuclear magnetic resonance) spectrum of the charge transporting polymer, charge transportability It can be calculated as an average value using the mass average molecular weight and the like of the polymer.
- the preparation amount it is preferable to adopt a value determined using the preparation amount because it is simple.
- the number average molecular weight of the charge transporting polymer can be appropriately adjusted in consideration of the solubility in a solvent, the film forming property and the like.
- the number average molecular weight is preferably 500 or more, more preferably 1,000 or more, still more preferably 2,000 or more, and still more preferably 3,000 or more.
- the number average molecular weight is preferably 200,000 or less, more preferably 100,000 or less, and 50,000 or less from the viewpoint of maintaining good solubility in a solvent and facilitating the preparation of the ink composition. More preferably, 20,000 or less is even more preferable.
- the number average molecular weight of the charge transporting polymer can be appropriately adjusted in consideration of the solubility in a solvent, the film forming property, and the like.
- the number average molecular weight is preferably 500 or more, more preferably 1,000 or more, still more preferably 2,000 or more, and still more preferably 5,000 or more.
- the number average molecular weight is preferably 1,000,000 or less, more preferably 100,000 or less, from the viewpoint of maintaining good solubility in a solvent and facilitating the preparation of the ink composition. The following is more preferable, and 30,000 or less is still more preferable.
- the mass average molecular weight of the charge transporting polymer can be appropriately adjusted in consideration of the solubility in a solvent, the film forming property and the like.
- the mass average molecular weight is preferably 1,000 or more, more preferably 3,000 or more, still more preferably 5,000 or more, and still more preferably 10,000 or more, from the viewpoint of excellent charge transportability.
- the mass average molecular weight is preferably 500,000 or less, more preferably 300,000 or less, and 150,000 or less from the viewpoint of maintaining good solubility in a solvent and facilitating preparation of the ink composition. More preferably, 100,000 or less and 50,000 or less are more preferable in this order.
- the mass average molecular weight of the charge transporting polymer can be appropriately adjusted in consideration of the solubility in a solvent, the film forming property and the like.
- the mass average molecular weight is preferably 1,000 or more, more preferably 5,000 or more, still more preferably 10,000 or more, and still more preferably 30,000 or more.
- the mass average molecular weight is preferably 1,000,000 or less, more preferably 700,000 or less, from the viewpoint of maintaining good solubility in a solvent and facilitating the preparation of the ink composition. The following is more preferable, and 200,000 or less and 100,000 or less are more preferable in this order.
- the number average molecular weight and the mass average molecular weight can be measured by gel permeation chromatography (GPC) using a standard polystyrene calibration curve.
- the proportion of the structural unit L is preferably 10 mol% or more, more preferably 20 mol% or more based on all structural units, from the viewpoint of obtaining sufficient charge transportability. And 30 mol% or more is more preferable.
- the ratio of the structural unit L is preferably 97 mol% or less, more preferably 92 mol% or less, and still more preferably 85 mol% or less, in consideration of the structural unit T and the structural unit B introduced as necessary.
- the ratio of the structural unit T contained in the charge transporting polymer is preferably 3 mol% or more, more preferably 8 mol% or more, and 15 mol% or more based on the total structural units from the viewpoint of solubility and curability. More preferable.
- the above range is also a preferable range from the viewpoint of improving the properties of the organic electronic device or from the viewpoint of suppressing the increase in viscosity and performing synthesis of the charge transporting polymer favorably.
- the ratio of the structural unit T is preferably 60 mol% or less, more preferably 55 mol% or less, and still more preferably 50 mol% or less from the viewpoint of obtaining sufficient charge transportability.
- the proportion of the structural unit B is preferably 1 mol% or more, more preferably 5 mol% or more, based on the total structural units, from the viewpoint of improving the durability of the organic electronic device.
- 10 mol% or more is more preferable.
- the proportion of the structural unit B is preferably 50 mol% or less, and 40 mol% or less, from the viewpoint of suppressing the increase in viscosity and performing synthesis of the charge transporting polymer favorably, or from the viewpoint of obtaining sufficient charge transporting properties. Is more preferable, and 30 mol% or less is more preferable.
- 100: 20 to 180: 20 to 90 are more preferable, and 100: 40 to 160: 30 to 80 are more preferable.
- the ratio of structural units can be determined using the amount of monomer corresponding to each structural unit used to synthesize the charge transporting polymer. Further, the ratio of structural units can be calculated as an average value using the integral value of the spectrum derived from each structural unit in the 1 H NMR spectrum of the charge transporting polymer. In the case where the preparation amount is clear, it is preferable to adopt a value determined using the preparation amount because it is simple. Moreover, the ratio regarding the above-mentioned terminal group can be calculated
- the polymerization degree (number of units of structural units) of the charge transporting polymer is preferably 5 or more, more preferably 10 or more, and still more preferably 20 or more from the viewpoint of stabilizing the film quality of the coating film.
- the degree of polymerization is preferably 1,000 or less, more preferably 700 or less, and still more preferably 500 or less from the viewpoint of solubility in a solvent.
- the degree of polymerization can be determined as an average value using the mass average molecular weight of the charge transporting polymer, the molecular weight of the structural unit, and the ratio of the structural unit.
- the charge transporting polymer can be produced by various synthesis methods and is not particularly limited. For example, known coupling reactions such as Suzuki coupling, Negishi coupling, Sonogashira coupling, Stille coupling, Buchwald-Heartwig coupling can be used. Suzuki coupling causes a Pd-catalyzed cross coupling reaction to occur between an aromatic boronic acid derivative and an aromatic halide. According to Suzuki coupling, a charge transporting polymer can be easily produced by bonding desired aromatic rings.
- a Pd (0) compound, a Pd (II) compound, a Ni compound or the like is used as a catalyst.
- a catalyst species generated by mixing tris (dibenzylideneacetone) dipalladium (0), palladium (II) acetate or the like as a precursor with a phosphine ligand can also be used.
- the description of WO 2010/140553 can be referred to.
- the charge transportable material contains at least the charge transportable polymer.
- the charge transporting material can be preferably used as an organic electronic material.
- the charge transporting material may contain only one type of the charge transporting polymer or may contain two or more types.
- the charge transportable material contains a plurality of types of charge transportable polymers, it is preferable that the entire charge transportable polymer which is a mixture satisfy the above-mentioned embodiments of the end group P and the end group EW.
- the charge transporting material may further contain a dopant.
- the dopant is not particularly limited as long as it is a compound that can exhibit a doping effect by being added to the charge transporting material to improve charge transportability.
- doping there are p-type doping and n-type doping, and in p-type doping, a substance that functions as an electron acceptor is used as a dopant, and in n-type doping, a substance that functions as an electron donor as a dopant is used. It is preferable to perform p-type doping to improve hole transportability and n-type doping to improve electron transportability.
- the dopant used for the charge transportable material may be a dopant that exhibits either p-type doping or n-type doping effect. Also, one dopant may be added alone, or a plurality of dopants may be mixed and added.
- the dopant used for p-type doping is an electron accepting compound, and examples thereof include Lewis acids, protonic acids, transition metal compounds, ionic compounds, halogen compounds, and ⁇ -conjugated compounds.
- Lewis acids FeCl 3 , PF 5 , AsF 5 , SfF 5 , BF 5 , BCl 3 , BBr 3 etc .
- protonic acid HF, HCl, HBr, HNO 5 , H 2 SO 4
- Inorganic acids such as HClO 4 , benzenesulfonic acid, p-toluenesulfonic acid, dodecylbenzenesulfonic acid, polyvinylsulfonic acid, methanesulfonic acid, trifluoromethanesulfonic acid, trifluoroacetic acid, 1-butanesulfonic acid, vinylphenylsulfonic acid
- Organic acids such as camphor sulfonic acid; transition metal compounds
- the onium salt means a compound comprising a cation moiety containing an onium ion such as iodonium and ammonium and an anion moiety for the cation moiety.
- the dopant used for n-type doping is an electron donative compound, for example, alkali metals such as Li and Cs; alkaline earth metals such as Mg and Ca; alkali metals such as LiF and Cs 2 CO 3 and / or Examples thereof include salts of alkaline earth metals; metal complexes; and electron donating organic compounds.
- alkali metals such as Li and Cs
- alkaline earth metals such as Mg and Ca
- alkali metals such as LiF and Cs 2 CO 3 and / or Examples thereof include salts of alkaline earth metals; metal complexes; and electron donating organic compounds.
- a compound capable of acting as a polymerization initiator for the polymerizable functional group as a dopant.
- examples of such compounds include compounds represented by the following formula (1) and compounds represented by the following formula (2).
- R a to R c each independently represent a hydrogen atom (H), an alkyl group, or a benzyl group, and N is not bonded to an aryl group.
- A shows an anion.
- N is bonded to a hydrogen atom (H), an alkyl group or a benzyl group and not to an aryl group. This tends to improve the stability to heat and light.
- R a to R c may be the same or different.
- R a to R c may be linked to form a ring.
- the alkyl group may be linear, branched or cyclic, and may be substituted or unsubstituted and has, for example, 1 to 20 carbon atoms.
- R a ⁇ It is preferred that at least one is an alkyl group or a benzyl group R c, at least two of the alkyl groups and / or benzyl R a ⁇ R c It is more preferably a group, and it is preferable that all of R a to R c be an alkyl group and / or a benzyl group. In one embodiment, it is preferable that all of R a to R c be alkyl groups, from the viewpoint of improving the thermal stability.
- At least one of R a to R c preferably has 6 or more carbon atoms, and more preferably 9 or more carbon atoms. It is more preferable that it is more than.
- A is not particularly limited as long as it is a conventionally known anion, but the anions represented by the following formulas (1b) to (5b) improve characteristics such as driving voltage reduction and stable long-time driving It is preferable from the viewpoint of
- E 1 is an oxygen atom
- E 2 is a nitrogen atom
- E 3 is a carbon atom
- E 4 is a boron atom or gallium atom
- E 5 is a phosphorus atom or an antimony atom
- Y 1 to Y 6 are each R 1 to R 16 each independently represent an electron-withdrawing monovalent group (R 2 and R 3 , at least 2 selected from R 4 to R 6) And at least two groups selected from R 7 to R 10 and at least two groups selected from R 11 to R 16 may be bonded to each other.
- R 1 to R 16 each independently represent an electron-withdrawing monovalent group.
- the electron-withdrawing monovalent group refers to a substituent that is more likely to attract an electron from the side of the bonding atom than a hydrogen atom.
- R 1 to R 16 are preferably organic groups.
- An organic group means an atomic group having one or more carbon atoms. The same applies to organic groups.
- At least two groups selected from R 2 and R 3 , R 4 to R 6, at least two groups selected from R 7 to R 10 , and at least two groups selected from R 11 to R 16 May be coupled to each other.
- the bonded group may be cyclic.
- Examples of the electron-withdrawing monovalent group include halogen atoms such as fluorine atom, chlorine atom and bromine atom; cyano group; thiocyano group; nitro group; alkylsulfonyl group such as mesyl group (for example, having 1 to 12 carbon atoms) Preferably a carbon number of 1 to 6); an arylsulfonyl group such as a tosyl group (for example, a carbon number of 6 to 18, preferably a carbon number of 6 to 12); an alkyloxysulfonyl group such as a methoxysulfonyl group (for example, a carbon number of 1 to 12) Preferably a carbon number of 1 to 6); an aryloxysulfonyl group such as a phenoxysulfonyl group (for example 6 to 18 carbon atoms, preferably a carbon number 6 to 12); an acyl group such as a formyl group, an acetyl
- R 1 and R 2 each independently represent a hydrogen atom or an organic group.
- R 1 and R 2 each independently represent a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, an arylalkyl group, an aryl group or a heteroaryl group independently from the viewpoint of the stability of the ionic compound, the solubility in a solvent, etc. Is preferred. These groups may have a substituent. R 1 and R 2 may be bonded to each other to form a ring. At least one group selected from R 1 and R 2 is preferably an organic group, more preferably both R 1 and R 2 are organic groups, and still more preferably an aryl group.
- the charge transporting material may further contain a charge transporting low molecular weight compound, another polymer and the like.
- the content of the charge transporting polymer is preferably 50% by mass or more, more preferably 70% by mass or more, and 80% by mass or more based on the total mass of the charge transporting material from the viewpoint of obtaining good charge transporting properties. More preferable. It is also possible to make it 100 mass%.
- the dopant When the dopant is contained, its content is preferably 0.01% by mass or more with respect to the total mass of the charge transportable material from the viewpoint of improving the charge transportability of the charge transportable material, 0.1% by mass The above is more preferable, and 0.5 mass% or more is more preferable. Further, from the viewpoint of maintaining the film forming property favorably, 50% by mass or less is preferable, 30% by mass or less is more preferable, and 20% by mass or less is more preferable with respect to the total mass of the charge transporting material.
- the ink composition contains the charge transporting material and a solvent capable of dissolving or dispersing the material.
- the organic layer can be easily formed by a simple method such as a coating method.
- solvent water, an organic solvent, or a mixed solvent thereof can be used.
- Organic solvents include alcohols such as methanol, ethanol and isopropyl alcohol; alkanes such as pentane, hexane and octane; cyclic alkanes such as cyclohexane; and aromatic hydrocarbons such as benzene, toluene, xylene, mesitylene, tetralin, phenylcyclohexane and diphenylmethane
- Aliphatic ethers such as ethylene glycol dimethyl ether, ethylene glycol diethyl ether, propylene glycol-1-monomethyl ether acetate; 1,2-dimethoxybenzene, 1,3-dimethoxybenzene, anisole, phenetole, 2-methoxytoluene, 3- Aromatic ethers such as methoxytoluene, 4-methoxytoluene, 2,3-di
- aromatic hydrocarbons aliphatic esters, aromatic esters, aliphatic ethers, and aromatic ethers, more preferably aromatic hydrocarbons, aromatic ethers, and aromatic esters, and still more preferably , Aromatic hydrocarbons.
- the ink composition preferably contains a polymerization initiator.
- a polymerization initiator known radical polymerization initiators, cationic polymerization initiators, anionic polymerization initiators and the like can be used. From the viewpoint of easy preparation of the ink composition, it is preferable to use a compound having both the function as a dopant and the function as a polymerization initiator.
- a cationic polymerization initiator also having a function as a dopant for example, the above-mentioned ionic compound can be suitably used.
- salts of perfluoro anions and cations such as iodonium ions or ammonium ions can be mentioned.
- the ink composition may further contain an additive as an optional component.
- an additive for example, a polymerization inhibitor, a stabilizer, a thickener, a gelling agent, a flame retardant, an antioxidant, a reduction inhibitor, an oxidizing agent, a reducing agent, a surface modifier, an emulsifier, an antifoamer, Dispersants, surfactants and the like can be mentioned.
- the content of the solvent in the ink composition can be determined in consideration of application to various coating methods.
- the content of the solvent is preferably such an amount that the content of the charge transporting polymer is 0.1% by mass or more, more preferably 0.2% by mass or more, with respect to the solvent. The amount which becomes more than is more preferable.
- the content of the solvent is preferably such that the content of the charge transporting polymer is 20% by mass or less, more preferably 15% by mass or less, and further preferably 10% by mass or less. preferable.
- the organic layer is a layer formed using the charge transporting material or the ink composition, and includes a cured product of the charge transporting polymer.
- an organic layer can be favorably formed by a coating method.
- Coating methods include, for example, spin coating method; cast method; immersion method; plate printing method such as letterpress printing, intaglio printing, offset printing, lithographic printing, letterpress reverse offset printing, screen printing, gravure printing, etc .; Known methods such as plateless printing can be mentioned.
- coating method the coating film before hardening obtained after application may be dried using a hotplate or oven, and a solvent may be removed.
- the polymerization reaction of the charge transporting polymer can be advanced to change the solubility of the coating film.
- a treatment such as light irradiation or heat treatment
- the polymerization reaction of the charge transporting polymer can be advanced to change the solubility of the coating film.
- laminating another layer on the cured organic layer (cured film) obtained after the change it becomes possible to easily achieve multilayering of the organic electronic device.
- WO 2010/140553 for the method of forming the organic layer, reference can be made to, for example, the description of WO 2010/140553.
- the thickness of the organic layer after curing is preferably 0.1 nm or more, more preferably 1 nm or more, and still more preferably 3 nm or more, from the viewpoint of improving the charge transport efficiency.
- the thickness of the organic layer is preferably 300 nm or less, more preferably 200 nm or less, and still more preferably 100 nm or less, from the viewpoint of reducing the electrical resistance.
- the organic electronic device comprises at least the organic layer.
- an organic electronics element an organic EL element, an organic photoelectric conversion element, an organic transistor etc. are mentioned, for example.
- the organic electronic device preferably has a structure in which an organic layer is disposed between at least a pair of electrodes.
- the organic EL device has at least the organic layer.
- the organic EL device usually comprises a light emitting layer, an anode, a cathode and a substrate, and as necessary, comprises functional layers such as a hole injection layer, an electron injection layer, a hole transport layer, an electron transport layer, etc. There is.
- Each layer may be formed by a vapor deposition method or may be formed by a coating method.
- Known materials can be used to form each layer. For known materials, reference can be made, for example, to the description of WO 2010/140553.
- the organic EL device preferably has an organic layer as a light emitting layer or a functional layer, more preferably as a functional layer, and still more preferably as at least one of a hole injecting layer and a hole transporting layer.
- an organic layer as a light emitting layer or a functional layer, more preferably as a functional layer, and still more preferably as at least one of a hole injecting layer and a hole transporting layer.
- the description of WO 2010/140553 can be referred to.
- an organic layer formed by using the charge transporting material as at least one of a hole injecting layer and a hole transporting layer, and it is more preferable to use at least as a hole injecting layer.
- these layers can be easily formed by using the ink composition containing the charge transporting material.
- the organic EL device has an organic layer formed using the charge transporting material as a hole transporting layer and further has a hole injecting layer
- known materials can be used for the hole injecting layer.
- the organic EL element has an organic layer formed using the charge transporting material as a hole injecting layer and further has a hole transporting layer
- known materials can be used for the hole transporting layer.
- the display element comprises the organic EL element.
- a color display element can be obtained by using an organic EL element as an element corresponding to each pixel of red, green and blue (RGB).
- Image forming methods include a simple matrix type in which individual organic EL elements arranged in a panel are directly driven by electrodes arranged in a matrix, and an active matrix type in which thin film transistors are arranged and driven in each element.
- the lighting device includes the organic EL element.
- the display device includes an illumination device and a liquid crystal element as display means.
- the display device can be a display device using the lighting device as a back light and a liquid crystal display device using a known liquid crystal element as a display means.
- Example 1-Polymer E1 In a three-necked round bottom flask, L1 (2.767 g, 5.0 mmol), B1 (0.964 g, 2.0 mmol), T1 (0.542 g, 2.0 mmol), T12 (0.450 g, 2.0 mmol), Methyltri-n-octylammonium chloride (0.034 g, from Aliquat 336 / Alfa Aesar), toluene (39.08 ml), and 3.0 mol% aqueous potassium hydroxide solution (7.79 ml) were added.
- the obtained organic layer was washed with water, then the organic layer was added to methanol-water (9: 1), and the resulting precipitate was suction filtered.
- the obtained precipitate and ethyl acetate (125 ml) were added to an eggplant flask, a stirrer was added, and a nitrogen supply line (nitrogen supply amount: 400 ml / min) was attached.
- a heating source an oil bath was used, stirring was carried out for 15 minutes at 60 ° C., and the precipitate was washed with ethyl acetate. After washing, the washed precipitate was collected by suction filtration.
- the washed precipitate was washed twice more with ethyl acetate as described above to remove residual monomers in the precipitate and reactants soluble in ethyl acetate.
- the precipitate washed with ethyl acetate was then dried under vacuum (40 ° C.).
- the obtained mixed solution was filtered using a polytetrafluoroethylene (PTFE) filter (pore diameter: 0.2 ⁇ m) to remove the metal adsorbent.
- PTFE polytetrafluoroethylene
- the resulting filtrate was added to methanol, and the resulting precipitate was collected by suction filtration.
- the collected precipitate is vacuum dried (40 ° C.), mass confirmation and coarse particle pulverization are performed every hour, and the point of time when the mass change disappears is taken as the end point of vacuum drying, charge transport polymer “polymer E1 I got
- the molar ratio of the terminal structural unit T in the obtained polymer E1 was 36.4 mol% based on the number of moles of all structural units.
- the molar ratio of the structural unit TP and the structural unit TEW was 50 mol% based on the number of moles of the total of the structural unit TP and the structural unit TEW.
- the weight average molecular weight of the obtained polymer E1 was 58,600, and the number average molecular weight was 16,100.
- the mass average molecular weight and the number average molecular weight were measured by GPC (polystyrene conversion) using tetrahydrofuran (THF) as an eluent.
- the measurement conditions are as follows. Liquid delivery unit: LC-20AD Shimadzu Corporation UV-VIS detector: SPD-20A Shimadzu Corporation Detection wavelength: 254 nm Column: Gelpack (registered trademark) GL-A160S / GL-A150S Hitachi Chemical Co., Ltd. Eluent: THF (for HPLC, containing stabilizers) Wako Pure Chemical Industries, Ltd. Flow rate: 1 ml / min Column temperature: 40 ° C Molecular weight standard substance: Standard polystyrene (PStQuick B / C / D) Tosoh Corporation
- Example 2-Polymer E2 In a three-necked round-bottomed flask, L1 (2.767 g, 5.0 mmol), B1 (0.964 g, 2.0 mmol), T1 (0.542 g, 2.0 mmol), T13 (0.386 g, 2.0 mmol), Methyltri-n-octylammonium chloride (0.034 g, from Aliquat 336 / Alfa Aesar), toluene (38.54 ml), and 3.0 mol% aqueous potassium hydroxide solution (7.79 ml) were added. Thereafter, in the same manner as in Example 1, a charge transportable polymer "Polymer E2" was prepared. The weight average molecular weight of the obtained polymer E2 was 58,200, and the number average molecular weight was 14,900.
- Example 3-Polymer E3 In a three-necked round-bottomed flask L1 (2.767 g, 5.0 mmol), B1 (0.964 g, 2.0 mmol), T1 (0.054 g, 0.2 mmol), T15 (1.113 g, 3.8 mmol), Methyltri-n-octylammonium chloride (0.034 g, from Aliquat 336 / Alfa Aesar), toluene (40.57 ml) and 3.0 mol% aqueous potassium hydroxide solution (7.79 ml) were added. Thereafter, in the same manner as in Example 1, a charge transporting polymer "polymer E3" was prepared. The weight average molecular weight of the obtained polymer E3 was 52,000, and the number average molecular weight was 15,500.
- Example 4-Polymer E4 In a three-necked round bottom flask, L1 (2.767 g, 5.0 mmol), B1 (0.964 g, 2.0 mmol), T1 (0.108 g, 0.4 mmol), T15 (1.055 g, 3.6 mmol), Methyltri-n-octylammonium chloride (0.034 g, from Aliquat 336 / Alfa Aesar), toluene (40.53 ml) and a 3.0 mol% aqueous potassium hydroxide solution (7.79 ml) were added. Thereafter, in the same manner as in Example 1, a charge transporting polymer "Polymer E4" was prepared. The weight average molecular weight of the obtained polymer E4 was 54,700, and the number average molecular weight was 21,600.
- Example 5 Polymer E5 In a three-necked round bottom flask, L1 (2.767 g, 5.0 mmol), B1 (0.964 g, 2.0 mmol), T1 (0.163 g, 0.6 mmol), T15 (0.996 g, 3.4 mmol), Methyltri-n-octylammonium chloride (0.034 g, from Aliquat 336 / Alfa Aesar), toluene (40.50 ml) and 3.0 mol% aqueous potassium hydroxide solution (7.79 ml) were added. Thereafter, in the same manner as in Example 1, a charge transporting polymer "Polymer E5" was prepared. The weight average molecular weight of the obtained polymer E5 was 53,400, and the number average molecular weight was 21,400.
- Example 6-Polymer E6 In a three-necked round-bottomed flask, L1 (2.767 g, 5.0 mmol), B1 (0.964 g, 2.0 mmol), T1 (0.271 g, 1.0 mmol), T15 (0.879 g, 3.0 mmol), Methyltri-n-octylammonium chloride (0.034 g, from Aliquat 336 / Alfa Aesar), toluene (40.42 ml), and 3.0 mol% aqueous potassium hydroxide solution (7.79 ml) were added. Thereafter, in the same manner as in Example 1, a charge transporting polymer "Polymer E6" was prepared. The weight average molecular weight of the obtained polymer E6 was 74,200, and the number average molecular weight was 16,500.
- Example 7-Polymer E7 In a three-necked round bottom flask, L1 (2.767 g, 5.0 mmol), B1 (0.964 g, 2.0 mmol), T1 (0.542 g, 2.0 mmol), T15 (0.586 g, 2.0 mmol), Methyltri-n-octylammonium chloride (0.034 g, from Aliquat 336 / Alfa Aesar), toluene (40.24 ml) and 3.0 mol% aqueous potassium hydroxide solution (7.79 ml) were added. Thereafter, in the same manner as in Example 1, a charge transporting polymer "Polymer E7" was prepared. The mass average molecular weight of the obtained polymer E7 was 51,600, and the number average molecular weight was 17,300.
- Example 8 Polymer E8 In a three-necked round bottom flask, L1 (2.767 g, 5.0 mmol), B1 (0.964 g, 2.0 mmol), T1 (0.651 g, 2.4 mmol), T15 (0.469 g, 1.6 mmol), Methyltri-n-octylammonium chloride (0.034 g, from Aliquat 336 / Alfa Aesar), toluene (40.16 ml) and 3.0 mol% aqueous potassium hydroxide solution (7.79 ml) were added. Thereafter, in the same manner as in Example 1, a charge transporting polymer "Polymer E8" was prepared. The weight average molecular weight of the obtained polymer E8 was 55,600, and the number average molecular weight was 17,500.
- Example 9-Polymer E9 In a three-necked round bottom flask, L1 (2.767 g, 5.0 mmol), B1 (0.964 g, 2.0 mmol), T1 (0.814 g, 3.0 mmol), T15 (0.293 g, 1.0 mmol), Methyltri-n-octylammonium chloride (0.034 g, from Aliquat 336 / Alfa Aesar), toluene (40.05 ml), and 3.0 mol% aqueous potassium hydroxide solution (7.79 ml) were added. Thereafter, in the same manner as in Example 1, a charge transporting polymer "Polymer E9" was prepared. The weight average molecular weight of the obtained polymer E9 was 53,000, and the number average molecular weight was 16,300.
- Example 10-Polymer E10 In a three-neck round bottom flask, L2 (2.576 g, 5.0 mmol), B1 (0.964 g, 2.0 mmol), T1 (0.542 g, 2.0 mmol), T15 (0.586 g, 2.0 mmol), Methyltri-n-octylammonium chloride (0.034 g, from Aliquat 336 / Alfa Aesar), toluene (47.62 ml) and a 3.0 mol% aqueous potassium hydroxide solution (7.79 ml) were added. Thereafter, in the same manner as in Example 1, a charge transporting polymer "Polymer E10" was prepared. The weight average molecular weight of the obtained polymer E10 was 53,400, and the number average molecular weight was 17,100.
- Example 11 Polymer E11 In a three-necked round bottom flask, L2 (2.576 g, 5.0 mmol), B1 (0.964 g, 2.0 mmol), T2 (0.683 g, 2.0 mmol), T15 (0.586 g, 2.0 mmol), Methyltri-n-octylammonium chloride (0.034 g, from Aliquat 336 / Alfa Aesar), toluene (62.97 ml) and 3.0 mol% aqueous potassium hydroxide solution (7.79 ml) were added. Thereafter, in the same manner as in Example 1, a charge transporting polymer "Polymer E11" was prepared. The weight average molecular weight of the obtained polymer E11 was 52,000, and the number average molecular weight was 17,700.
- Example 12-Polymer E12 In a three-necked round bottom flask L2 (2.576 g, 5.0 mmol), B1 (0.964 g, 2.0 mmol), T3 (0.366 g, 2.0 mmol), T15 (0.586 g, 2.0 mmol), Methyltri-n-octylammonium chloride (0.034 g, from Aliquat 336 / Alfa Aesar), toluene (58.77 ml), and 3.0 mol% aqueous potassium hydroxide solution (7.79 ml) were added. Thereafter, in the same manner as in Example 1, a charge transporting polymer "Polymer E12" was prepared. The weight average molecular weight of the obtained polymer E12 was 51,900, and the number average molecular weight was 17,600.
- Example 13-Polymer E13 In a three-necked round bottom flask L2 (2.576 g, 5.0 mmol), B1 (0.964 g, 2.0 mmol), T3 (0.366 g, 2.0 mmol), T15 (0.586 g, 2.0 mmol), Methyltri-n-octylammonium chloride (0.034 g, from Aliquat 336 / Alfa Aesar), toluene (45.78 ml) and 3.0 mol% aqueous potassium hydroxide solution (7.79 ml) were added. Thereafter, in the same manner as in Example 1, a charge transporting polymer "Polymer E13" was prepared. The weight average molecular weight of the obtained polymer E13 was 62,200, and the number average molecular weight was 18,600.
- Example 14-Polymer E14 In a three-necked round bottom flask L2 (2.576 g, 5.0 mmol), B1 (0.964 g, 2.0 mmol), T3 (0.366 g, 2.0 mmol), T15 (0.586 g, 2.0 mmol), Methyltri-n-octylammonium chloride (0.034 g, from Aliquat 336 / Alfa Aesar), toluene (37.13 ml), and 3.0 mol% aqueous potassium hydroxide solution (7.79 ml) were added. Thereafter, in the same manner as in Example 1, a charge transporting polymer "Polymer E14" was prepared. The weight average molecular weight of the obtained polymer E14 was 81,000, and the number average molecular weight was 20,000.
- Example 15-Polymer E15 In a three-necked round bottom flask L2 (2.576 g, 5.0 mmol), B1 (0.964 g, 2.0 mmol), T3 (0.366 g, 2.0 mmol), T15 (0.586 g, 2.0 mmol), Methyltri-n-octylammonium chloride (0.034 g, from Aliquat 336 / Alfa Aesar), toluene (26.31 ml) and a 3.0 mol% aqueous potassium hydroxide solution (7.79 ml) were added. Thereafter, in the same manner as in Example 1, a charge transporting polymer "Polymer E15" was prepared. The weight average molecular weight of the obtained polymer E15 was 112,700, and the number average molecular weight was 21,400.
- Example 16-Polymer E16 In a three-necked round-bottomed flask, L2 (2.576 g, 5.0 mmol), B1 (0.964 g, 2.0 mmol), T4 (0.366 g, 2.0 mmol), T15 (0.586 g, 2.0 mmol), Methyltri-n-octylammonium chloride (0.034 g, from Aliquat 336 / Alfa Aesar), toluene (58.77 ml), and 3.0 mol% aqueous potassium hydroxide solution (7.79 ml) were added. Thereafter, in the same manner as in Example 1, a charge transporting polymer "Polymer E16" was prepared. The weight average molecular weight of the obtained polymer E16 was 54,200, and the number average molecular weight was 17,200.
- Example 17-Polymer E17 In a three-neck round bottom flask, L2 (2.576 g, 5.0 mmol), B1 (0.964 g, 2.0 mmol), T5 (0.354 g, 2.0 mmol), T15 (0.586 g, 2.0 mmol), Methyltri-n-octylammonium chloride (0.034 g, from Aliquat 336 / Alfa Aesar), toluene (58.61 ml), and 3.0 mol% aqueous potassium hydroxide solution (7.79 ml) were added. Thereafter, in the same manner as in Example 1, a charge transporting polymer "Polymer E17" was prepared. The weight average molecular weight of the obtained polymer E17 was 55,500, and the number average molecular weight was 18,200.
- Example 18-Polymer E18 In a three-neck round bottom flask, L2 (2.576 g, 5.0 mmol), B2 (0.960 g, 2.0 mmol), T3 (0.366 g, 2.0 mmol), T15 (0.586 g, 2.0 mmol), Methyltri-n-octylammonium chloride (0.034 g, from Aliquat 336 / Alfa Aesar), toluene (67.98 ml) and 3.0 mol% aqueous potassium hydroxide solution (7.79 ml) were added. Thereafter, in the same manner as in Example 1, a charge transporting polymer "Polymer E18" was prepared. The weight average molecular weight of the obtained polymer E18 was 121,000, and the number average molecular weight was 17,000.
- Example 19-Polymer E19 In a three-necked round bottom flask, L1 (3.043 g, 5.500 mmol), L3 (2.086 g, 5.000 mmol), methyltri-n-octylammonium chloride (0.044 g, Aliquat 336 / Alfa Aesar), toluene (42 .43 ml) and 3.0 mol% potassium hydroxide aqueous solution (10.13 ml) were added. In a three-necked round bottom flask, a stirrer was placed, and a reflux tube and a nitrogen supply line (nitrogen supply amount: 400 ml / min) were attached.
- L1 (3.043 g, 5.500 mmol)
- L3 2.086 g, 5.000 mmol
- methyltri-n-octylammonium chloride 0.044 g, Aliquat 336 / Alfa Aesar
- toluene 42 .43
- the monomer (structural unit contained in the polymer), the molar ratio (%) of the structural unit T, the molar ratio (%) of the structural unit TP and the structural unit TEW, the mass used in the synthesis The average molecular weight and the number average molecular weight are shown in Tables 1 and 2.
- powder having a constant particle diameter means powder having an average particle diameter of 20 to 40 ⁇ m on a volume basis.
- the average particle size is a median diameter measured by a laser diffraction scattering type particle size distribution measuring apparatus.
- the reduction time was calculated by comparing the dissolution time of the polymer of the example with the dissolution time of the polymer of the comparative example.
- the polymers of each example were compared with the polymers of comparative examples having the same structural units except that the terminal structural unit TEW was different.
- the following equation was used to calculate the shortening time.
- the “dissolution time” of the polymer of the example in toluene was evaluated in the following seven steps using the calculated “shortening time”. As a reference, the dissolution time was also evaluated for the polymers C2 and C4 to C7, which are polymers of Comparative Examples.
- G Reduced time 0% or less
- the “dissolution concentration" of the polymer in toluene was evaluated in the following four steps.
- the “shortening time” was calculated in the same manner as the solubility in toluene, and the “dissolution time” of the polymer in anisole was evaluated in the following seven steps.
- the “dissolution concentration” of the polymer in anisole was evaluated in the following four steps.
- D at a concentration of 1.0% by mass the polymer is insoluble
- Solubility in butyl benzoate (Dissolution time test) The coarse particles contained in the polymer were ground using a mortar to make the polymer a powder of a certain particle size. In a 6 ml screw tube, weigh out the polymer (10.2 mg) so that the content of the polymer is 1.0% by mass relative to the mass of the solution and the volume of the solution is 1 ml, and butyl benzoate (1007.0 mg) ( 25 ° C.) was added. Subsequently, a stirrer (10 x 4 4 mm) was added and stirred (600 rpm) in a water bath (25 ° C). The dissolution time from the start of stirring to the complete dissolution of the polymer was measured. In the "completely dissolved" state, it was visually determined that the clearly insoluble polymer was absent, not turbid, and transparent.
- the “dissolution time” of the polymer in butyl benzoate was evaluated in the following four steps.
- the “dissolution concentration" of the polymer in butyl benzoate was evaluated in the following four steps.
- a polymer (50.0 mg) and the following polymerization initiator (0.5 mg) were weighed into a 9 ml screw tube, toluene (4949.5 mg) was added, and the polymer and the polymerization initiator were dissolved to prepare an ink composition.
- the ink composition is filtered with a polytetrafluoroethylene (PTFE) filter (pore diameter 0.2 ⁇ m) and dropped onto a quartz substrate (22 mm long ⁇ 29 mm wide ⁇ 0.7 mm thick), and a coated film is formed by a spin coater. I made a film.
- heat curing was carried out at 210 ° C. for 30 minutes under the conditions of the atmosphere to form an organic layer with a film thickness of 30 nm on the quartz substrate.
- the absorbance A of the organic layer formed on the quartz substrate was measured using a spectrophotometer ("UV-2700" manufactured by Shimadzu Corporation). Subsequently, it was immersed in toluene (10 ml, 25 ° C.) for 10 minutes under an environment of 25 ° C. so that the organic layer after measurement was on top.
- the absorbance B of the organic layer after immersion in toluene was measured, and the residual film ratio was calculated using the following equation from the absorbance A of the formed organic layer and the absorbance B of the organic layer after immersion in toluene.
- the value in the maximum absorption wavelength of the organic layer was used for the value of the light absorbency.
- the residual film rate was evaluated in the following four stages. The higher the residual film rate, the higher the curability of the polymer and the higher the solvent resistance of the organic layer.
- the polymers of the examples had excellent solubility in organic solvents.
- the polymers of the examples had excellent curability, and the organic layers formed by the polymers of the examples had sufficient solvent resistance.
- Fig. 1 represents a substrate
- 2 represents an anode
- 3 represents an organic layer
- 4 represents a cathode.
- the ITO substrate is transferred into a vacuum deposition machine, and an aluminum (Al) electrode with a film thickness of 100 nm is formed by deposition on the formed organic layer using a deposition method, and sealing treatment is performed to evaluate conductivity.
- Al aluminum
- thermal stability 1 evaluation HOD After heat curing, additional heating was carried out under conditions of a nitrogen atmosphere at 200 ° C. for 60 minutes, and an organic layer with a film thickness of 100 nm was formed on the ITO substrate in the same manner as the preparation of the HOD for conductivity evaluation. Thermal stability 1 evaluation HOD was produced.
- Thermal stability evaluation (Thermal stability 1 evaluation) A voltage was applied to the thermal stability 1 evaluation HOD manufactured above, the applied voltage was changed, and the voltage at a current density of 300 mA / cm 2 was measured. From the voltage difference between the conductivity evaluation HOD and the thermal stability 1 evaluation HOD, the thermal stability was evaluated in the following five stages. The voltage difference was calculated using the following equation. The smaller the voltage difference, the better the heat resistance.
- V Voltage difference less than 0.20 V
- V B Voltage difference less than 0.20 V and less than 0.50
- C Voltage difference less than 0.50 V and less than 1.00
- D Voltage difference more than 1.00 V and less than 2.00
- E Voltage difference 00 V or more
- Heat stability 2 evaluation A voltage was applied to the thermal stability 2 evaluation HOD manufactured above, the applied voltage was changed, and the voltage at a current density of 300 mA / cm 2 was measured. From the voltage difference between the conductivity evaluation HOD and the thermal stability 2 evaluation HOD, the thermal stability was evaluated in the following five stages. The voltage difference was calculated using the following equation. The smaller the voltage difference, the better the heat resistance.
- V Voltage difference less than 0.20 V
- V B Voltage difference less than 0.20 V and less than 0.50
- C Voltage difference less than 0.50 V and less than 1.00
- D Voltage difference more than 1.00 V and less than 2.00
- E Voltage difference 00 V or more
- the organic layer formed by the example polymer had excellent conductivity and thermal stability.
- An organic electronic device including the organic layer exhibits excellent conductivity and thermal stability.
- the charge transport polymer is a polymeric material suitable for a wet process and can be preferably used for the preparation of an organic electronic material using a wet process.
- the organic layer formed using the charge transporting polymer can improve the characteristics of the organic electronic device.
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Abstract
Description
一実施形態によれば、電荷輸送性ポリマーは、分子鎖と、該分子鎖に結合する末端基とを含み、前記末端基が、重合性官能基を含む末端基Pと、電子求引性置換基により置換された芳香族炭化水素基を含む末端基EWとを含む。前記末端基Pは、後述の式(P1)で表される末端基を含む。前記芳香族炭化水素基の環を構成する炭素原子について、前記分子鎖に結合する炭素原子の番号を1とし、隣接する炭素原子に順に番号をつけたとき、前記電子求引性置換基は、1+2n(nは、1以上の整数である。)の炭素原子に結合している。
電荷輸送性ポリマーは、分子鎖の末端に、重合性官能基を含む末端基Pを有する。末端基Pは、重合性官能基以外に任意の基を含んでもよい。末端基Pの例として、「重合性官能基」、「重合性官能基を含む基により置換された芳香環基」等が挙げられる。末端基Pは、後述する式(P1)で表される末端基を少なくとも含む。
「重合性官能基」は、熱及び/又は光を加えることにより、互いに結合を形成し得る官能基である。電荷輸送性ポリマーは、重合性官能基を含むことで、硬化性を示す。電荷輸送性ポリマーを用いて形成した塗布膜を硬化させ、有機層(本開示において、「硬化膜」ともいう。)を形成することで、有機層に、湿式プロセスにより上層を積層するために必要な耐溶剤性を付与することができる。
一実施形態において、末端基Pは、「重合性官能基を含む基により置換された芳香環基」である。
末端基Pは、少なくとも下記式(P1)で表される末端基を含む。式(P1)で表される末端基は、良好な耐熱性を得る観点から好ましい基である。
電荷輸送性ポリマーは、分子鎖の末端に、電子求引性置換基により置換された芳香族炭化水素基を含む末端基EWを有する。電子求引性置換基は、芳香族炭化水素基の環を構成する炭素原子について、分子鎖に結合する炭素原子の番号を1とし、隣接する炭素原子に順に番号をつけたとき、1+2n(nは、1以上の整数である。)の炭素原子に結合している。
「電子求引性置換基」は、水素原子と比べて、結合原子側から電子を引きつけやすい置換基である。電荷輸送性ポリマーは、分子鎖の末端に、特定の炭素原子に結合する水素原子が電子求引性置換基によって置換された芳香族炭化水素基を含むことで、溶媒への優れた溶解性を示す。特定の炭素原子に結合する電子求引性置換基の存在が、電荷輸送性ポリマーの溶解性を向上させていると推測される。
「芳香族炭化水素基」は、好ましくは炭素数6~30の芳香族炭化水素基である。芳香族炭化水素の例は上記のとおりである。芳香族炭化水素が縮合多環式芳香族炭化水素である場合、芳香族炭化水素を構成する環の全てがベンゼン環であることが好ましい。
(2)置換位置番号1の炭素原子を起点とし、芳香族炭化水素基の外周に沿って一方向に向かい、隣接する炭素原子毎に順に番号をつける。
末端基EWの共鳴構造を記述した際、分子鎖と結合する炭素原子の置換位置番号を1とするとき、置換位置番号2n(nは、1以上の整数)(すなわち、2nは偶数)の位置には、局在化構造を記すことができる。以下は、置換位置番号2n(n=2)の炭素原子に電子求引性置換基を有する例である。
末端基EWの共鳴構造を記述した際、分子鎖と結合する炭素原子の置換位置番号を1とするとき、置換位置番号1+2n(nは、1以上の整数)(すなわち、1+2nは奇数)の位置に、局在化構造を示すことができない。以下は、置換位置番号1+2n(n=1)の炭素原子に電子求引性置換基を有する例と、置換位置番号1+2n(n=1)及び置換位置番号1+2n(n=2)の炭素原子にそれぞれ電子求引性置換基を有する例である。
末端基EWは、芳香族炭化水素基の置換位置番号1+2n(nは、1以上の整数)の炭素原子に電子求引性置換基を有する構造を有する。末端基EWの具体例として、以下の式(EW1)~式(EW5)で表される基が挙げられる。ただし、末端基EWは、これらに限定されるものではなく、電子求引性置換基により置換された芳香族炭化水素基を含み、かつ、芳香族炭化水素基の置換位置番号1+2n(nは、1以上の整数)の炭素原子に電子求引性置換基が結合している構造を満足すれば、電子求引性置換基の結合位置及び数に対しての限定はない。溶解性の向上を考慮すると、電子求引性置換基の数は、2以上が好ましい。溶解性の向上を考慮すると、式(EW1)~式(EW5)のいずれかで表される基が好ましく、式(EW1)又は式(EW2)で表される基がより好ましく、式(EW2)で表される基が更に好ましい。
電荷輸送性ポリマーは、直鎖状であっても、又は、分岐構造を有する分岐状であってもよい。電荷輸送性ポリマーは、好ましくは、電荷輸送性を有する2価の構造単位Lと1価の構造単位Tとを少なくとも含み、分岐部を構成する3価以上の構造単位Bを更に含んでもよい。また、電荷輸送性ポリマーは、好ましくは、電荷輸送性を有し、分岐部を構成する3価以上の構造単位Bと1価の構造単位Tとを少なくとも含み、2価の構造単位を更に含んでもよい。分子鎖は、2価の構造単位及び/又は3価の構造単位を含む鎖状構造を有する。分岐状の電荷輸送性ポリマーは、耐熱性に優れ、また、末端基を多く導入することができることから、良好な溶解性及び硬化性を示す。電荷輸送性ポリマーは、各構造単位を、それぞれ1種のみ含んでいても、又は、それぞれ複数種含んでいてもよい。電荷輸送性ポリマーにおいて、各構造単位は、「1価」~「3価以上」の結合部位において互いに結合している。
構造単位Lは、電荷輸送性を有する2価の構造単位である。構造単位Lは、電荷を輸送する能力を有する原子団を含んでいればよく、特に限定されない。例えば、構造単位Lは、置換又は非置換の、芳香族アミン構造、カルバゾール構造、チオフェン構造、ビチオフェン構造、フルオレン構造、ベンゼン構造、ビフェニレン構造、ターフェニレン構造、ナフタレン構造、アントラセン構造、テトラセン構造、フェナントレン構造、ジヒドロフェナントレン構造、ピリジン構造、ピラジン構造、キノリン構造、イソキノリン構造、キノキサリン構造、アクリジン構造、ジアザフェナントレン構造、フラン構造、ピロール構造、オキサゾール構造、オキサジアゾール構造、チアゾール構造、チアジアゾール構造、トリアゾール構造、ベンゾチオフェン構造、ベンゾオキサゾール構造、ベンゾオキサジアゾール構造、ベンゾチアゾール構造、ベンゾチアジアゾール構造、ベンゾトリアゾール構造、N-アリールフェノキサジン構造、及び、これらの1種又は2種以上を含む構造から選択される。芳香族アミン構造は、好ましくはトリアリールアミン構造であり、より好ましくはトリフェニルアミン構造である。
構造単位Bは、電荷輸送性ポリマーが分岐構造を有する場合に、分岐部を構成する3価以上の構造単位である。構造単位Bは、有機エレクトロニクス素子の耐久性向上の観点から、好ましくは6価以下であり、より好ましくは3価又は4価である。構造単位Bは、電荷輸送性を有する単位であることが好ましい。例えば、構造単位Bは、有機エレクトロニクス素子の耐久性向上の観点から、置換又は非置換の、芳香族アミン構造、カルバゾール構造、縮合多環式芳香族炭化水素構造、及び、これらの1種又は2種以上を含有する構造から選択される。
構造単位Tは、電荷輸送性ポリマーの末端部を構成する1価の構造単位であり、末端基を含む構造単位である。構造単位Tは、少なくとも、末端基Pを含む構造単位TPと、末端基EWを含む構造単位TEWとを含む。更には、構造単位Tは、構造単位TP及び構造単位TEWとは異なる任意の構造単位TOを含んでもよい。構造単位TOは、末端基P及び末端基EWを含まない。
直鎖状の電荷輸送性ポリマーの場合、電荷輸送性ポリマーの数平均分子量は、溶媒への溶解性、成膜性等を考慮して適宜、調整できる。数平均分子量は、電荷輸送性に優れるという観点から、500以上が好ましく、1,000以上がより好ましく、2,000以上が更に好ましく、3,000以上がより一層好ましい。また、数平均分子量は、溶媒への良好な溶解性を保ち、インク組成物の調製を容易にするという観点から、200,000以下が好ましく、100,000以下がより好ましく、50,000以下が更に好ましく、20,000以下がより一層好ましい。
直鎖状の電荷輸送性ポリマーの場合、電荷輸送性ポリマーの質量平均分子量は、溶媒への溶解性、成膜性等を考慮して適宜、調整できる。質量平均分子量は、電荷輸送性に優れるという観点から、1,000以上が好ましく、3,000以上がより好ましく、5,000以上が更に好ましく、10,000以上が一層好ましい。また、質量平均分子量は、溶媒への良好な溶解性を保ち、インク組成物の調製を容易にするという観点から、500,000以下が好ましく、300,000以下がより好ましく、150,000以下が更に好ましく、100,000以下、50,000以下がこの順でより一層好ましい。
電荷輸送性ポリマーが構造単位Lを含む場合、構造単位Lの比率は、十分な電荷輸送性を得る観点から、全構造単位を基準として、10モル%以上が好ましく、20モル%以上がより好ましく、30モル%以上が更に好ましい。また、構造単位Lの比率は、構造単位T及び必要に応じて導入される構造単位Bを考慮すると、97モル%以下が好ましく、92モル%以下がより好ましく、85モル%以下が更に好ましい。
電荷輸送性ポリマーは、種々の合成方法により製造でき、特に限定されない。例えば、鈴木カップリング、根岸カップリング、薗頭カップリング、スティルカップリング、ブッフバルト・ハートウィッグカップリング等の公知のカップリング反応を用いることができる。鈴木カップリングは、芳香族ボロン酸誘導体と芳香族ハロゲン化物の間で、Pd触媒を用いたクロスカップリング反応を起こさせるものである。鈴木カップリングによれば、所望とする芳香環同士を結合させることにより、電荷輸送性ポリマーを簡便に製造できる。
一実施形態によれば、電荷輸送性材料は、少なくとも前記電荷輸送性ポリマーを含有する。電荷輸送性材料は、有機エレクトロニクス材料として好ましく用いることができる。電荷輸送性材料は、前記電荷輸送性ポリマーを1種のみ含有しても、2種以上を含有してもよい。電荷輸送性材料が前記電荷輸送性ポリマーの複数種類を含有する場合は、混合物である電荷輸送性ポリマー全体が、上記の末端基Pと末端基EWの実施形態を満たすことが好ましい。
電荷輸送性材料は、ドーパントを更に含有してもよい。ドーパントは、電荷輸送性材料に添加することでドーピング効果を発現させ、電荷の輸送性を向上させ得る化合物であればよく、特に制限はない。ドーピングには、p型ドーピングとn型ドーピングがあり、p型ドーピングではドーパントとして電子受容体として働く物質が用いられ、n型ドーピングではドーパントとして電子供与体として働く物質が用いられる。正孔輸送性の向上にはp型ドーピング、電子輸送性の向上にはn型ドーピングを行うことが好ましい。電荷輸送性材料に用いられるドーパントは、p型ドーピング又はn型ドーピングのいずれの効果を発現させるドーパントであってもよい。また、1種のドーパントを単独で添加しても、複数種のドーパントを混合して添加してもよい。
一実施形態において、熱安定性を向上させる観点から、Ra~Rcの全てがアルキル基であることが好ましい。
一実施形態において、芳香族炭化水素系溶媒に対する溶解性を向上させる観点から、Ra~Rcの少なくとも1つが、炭素数6以上であることが好ましく、9以上であることがより好ましく、12以上であることが更に好ましい。
電荷輸送性材料は、電荷輸送性低分子化合物、他のポリマー等を更に含有してもよい。
電荷輸送性ポリマーの含有量は、良好な電荷輸送性を得る観点から、電荷輸送性材料の全質量に対して、50質量%以上が好ましく、70質量%以上がより好ましく、80質量%以上が更に好ましい。100質量%とすることも可能である。
一実施形態によれば、インク組成物は、前記電荷輸送性材料と該材料を溶解又は分散し得る溶媒とを含有する。インク組成物を用いることによって、塗布法といった簡便な方法によって有機層を容易に形成できる。
溶媒としては、水、有機溶媒、又はこれらの混合溶媒を使用できる。有機溶媒としては、メタノール、エタノール、イソプロピルアルコール等のアルコール;ペンタン、ヘキサン、オクタン等のアルカン;シクロヘキサン等の環状アルカン;ベンゼン、トルエン、キシレン、メシチレン、テトラリン、フェニルシクロヘキサン、ジフェニルメタン等の芳香族炭化水素;エチレングリコールジメチルエーテル、エチレングリコールジエチルエーテル、プロピレングリコール-1-モノメチルエーテルアセタート等の脂肪族エーテル;1,2-ジメトキシベンゼン、1,3-ジメトキシベンゼン、アニソール、フェネトール、2-メトキシトルエン、3-メトキシトルエン、4-メトキシトルエン、2,3-ジメチルアニソール、2,4-ジメチルアニソール、3-フェノキシトルエン等の芳香族エーテル;酢酸エチル、酢酸n-ブチル、乳酸エチル、乳酸n-ブチル等の脂肪族エステル;酢酸フェニル、プロピオン酸フェニル、安息香酸メチル、安息香酸エチル、安息香酸プロピル、安息香酸n-ブチル等の芳香族エステル;N,N-ジメチルホルムアミド、N,N-ジメチルアセトアミド等のアミド系溶媒;ジメチルスルホキシド、テトラヒドロフラン、アセトン、クロロホルム、塩化メチレンなどが挙げられる。好ましくは、芳香族炭化水素、脂肪族エステル、芳香族エステル、脂肪族エーテル、及び芳香族エーテルであり、より好ましくは、芳香族炭化水素、芳香族エーテル、及び芳香族エステルであり、更に好ましくは、芳香族炭化水素である。
電荷輸送性ポリマーが重合性官能基を有する場合、インク組成物は、好ましくは、重合開始剤を含有する。重合開始剤として、公知のラジカル重合開始剤、カチオン重合開始剤、アニオン重合開始剤等を使用できる。インク組成物を簡便に調製できる観点から、ドーパントとしての機能と重合開始剤としての機能とを兼ねる化合物を用いることが好ましい。ドーパントとしての機能も備えたカチオン重合開始剤として、例えば、前記イオン化合物を好適に使用することができる。例えば、パーフルオロアニオンと、ヨードニウムイオン又はアンモニウムイオン等のカチオンとの塩が挙げられる。
インク組成物は、更に、任意成分として添加剤を含有してもよい。添加剤としては、例えば、重合禁止剤、安定剤、増粘剤、ゲル化剤、難燃剤、酸化防止剤、還元防止剤、酸化剤、還元剤、表面改質剤、乳化剤、消泡剤、分散剤、界面活性剤等が挙げられる。
インク組成物における溶媒の含有量は、種々の塗布方法へ適用することを考慮して定めることができる。例えば、溶媒の含有量は、溶媒に対し電荷輸送性ポリマーの含有量が、0.1質量%以上となる量が好ましく、0.2質量%以上となる量がより好ましく、0.5質量%以上となる量が更に好ましい。また、溶媒の含有量は、溶媒に対し電荷輸送性ポリマーの含有量が、20質量%以下となる量が好ましく、15質量%以下となる量がより好ましく、10質量%以下となる量が更に好ましい。
一実施形態によれば、有機層は、前記電荷輸送性材料又は前記インク組成物を用いて形成された層であって、前記電荷輸送性ポリマーの硬化物を含むものである。インク組成物を用いることによって、塗布法により有機層を良好に形成できる。塗布方法としては、例えば、スピンコーティング法;キャスト法;浸漬法;凸版印刷、凹版印刷、オフセット印刷、平版印刷、凸版反転オフセット印刷、スクリーン印刷、グラビア印刷等の有版印刷法;インクジェット法等の無版印刷法などの公知の方法が挙げられる。塗布法によって有機層を形成する場合、塗布後に得られた硬化前の塗布膜を、ホットプレート又はオーブンを用いて乾燥させ、溶媒を除去してもよい。
一実施形態によれば、有機エレクトロニクス素子は、少なくとも前記有機層を有する。有機エレクトロニクス素子として、例えば、有機EL素子、有機光電変換素子、有機トランジスタ等が挙げられる。有機エレクトロニクス素子は、好ましくは、少なくとも一対の電極の間に有機層が配置された構造を有する。
一実施形態によれば、有機EL素子は、少なくとも前記有機層を有する。有機EL素子は、通常、発光層、陽極、陰極、及び基板を備えており、必要に応じて、正孔注入層、電子注入層、正孔輸送層、電子輸送層等の機能層を備えている。各層は、蒸着法により形成してもよく、塗布法により形成してもよい。各層の形成には、公知の材料を用いることができる。公知の材料について、例えば、国際公開第2010/140553号の記載を参照できる。有機EL素子は、好ましくは、有機層を発光層又は機能層として有し、より好ましくは機能層として有し、更に好ましくは正孔注入層及び正孔輸送層の少なくとも一方として有する。有機ELの構造及び製造方法については、例えば、国際公開第2010/140553号の記載を参照できる。
一実施形態によれば、表示素子は、前記有機EL素子を備えている。例えば、赤、緑及び青(RGB)の各画素に対応する素子として、有機EL素子を用いることで、カラーの表示素子が得られる。画像の形成方法には、マトリックス状に配置した電極でパネルに配列された個々の有機EL素子を直接駆動する単純マトリックス型と、各素子に薄膜トランジスタを配置して駆動するアクティブマトリックス型とがある。
[Pd触媒溶液の調製]
窒素雰囲気下のグローブボックス中で、室温下、サンプル容器にトリス(ジベンジリデンアセトン)ジパラジウム(0.183g、0.200mmol)を秤取り、トルエン(40.00ml)を加え、10分間撹拌した。同様に、異なるサンプル容器にトリス(tert-ブチル)ホスフィン(0.324g、1.600mmol)を秤取り、トルエン(10.00ml)を加え、10分間撹拌した。得られた溶液を混合し、室温で10分間撹拌し、Pd触媒溶液を得た。なお、Pd触媒溶液の調製における全ての溶媒は、窒素雰囲気下での供給量1l/分の窒素バブルによる脱気を30分間以上実施し、酸素濃度を0.5体積%以下とした後に使用した。
合成に用いたモノマーを以下に示す。
(実施例1-ポリマーE1)
三口丸底フラスコに、L1(2.767g、5.0mmol)、B1(0.964g、2.0mmol)、T1(0.542g、2.0mmol)、T12(0.450g、2.0mmol)、メチルトリ-n-オクチルアンモニウムクロリド(0.034g、Aliquat336/Alfa Aesar製)、トルエン(39.08ml)、及び、3.0モル%水酸化カリウム水溶液(7.79ml)を加えた。
三口丸底フラスコに撹拌子を入れ、還流管及び窒素供給ライン(窒素供給量400ml/分)を取り付けた。加熱源として、オイルバスを使用し、60℃にて、スターラー撹拌を30分間行い、上記材料を溶解させた。
別途調製した上記Pd触媒溶液(1.01ml)をこの三口丸底フラスコに加え、加熱還流を2時間行った。
なお、合成における全ての溶媒は、窒素雰囲気下での供給量1l/分の窒素バブルによる脱気を30分間以上実施し、酸素濃度を0.5体積%以下とした後に使用した。
ナスフラスコに、得られた沈殿物と酢酸エチル(125ml)を加え、撹拌子を入れ、窒素供給ライン(窒素供給量400ml/分)を取り付けた。加熱源として、オイルバスを使用し、60℃にて、スターラー撹拌を15分間行い、沈殿物を酢酸エチルにより洗浄した。洗浄後、吸引ろ過により、洗浄した沈殿物を回収した。この洗浄した沈殿物を用いて、上記と同様の酢酸エチルによる洗浄を更に2回実施し、沈殿物中の残存モノマー及び酢酸エチルに可溶な反応物を取り除いた。次いで、酢酸エチルにて洗浄した沈殿物を真空乾燥(40℃)した。
ナスフラスコに、真空乾燥後の沈殿物とメルカプトプロピルシラン及びアモルファスシリカからなる金属吸着剤(沈殿物に対し20質量%、バイオタージ・ジャパン株式会社製「ISOLUTE Si-Thiol」)及びトルエン(沈殿物に対して10質量%)を加え、撹拌子を入れ、窒素供給ライン(窒素供給量400ml/分)を取り付けた。加熱源として、ウォーターバスを使用し、40℃にて、スターラー撹拌を行い、沈殿物を溶解させ、更に、撹拌を2時間行い、金属吸着剤による吸着処理を行った。
吸着処理後、得られた混合液をポリテトラフルオロエチレン(PTFE)フィルタ(孔径0.2μm)を用いてろ過し、金属吸着剤を取り除いた。
得られたろ液をメタノールに加え、生じた沈殿物を吸引ろ過により回収した。次いで、回収した沈殿物を真空乾燥(40℃)し、1時間毎に質量の確認と粗粒子の粉砕を行い、質量変化がなくなった時点を真空乾燥の終点として、電荷輸送性ポリマー「ポリマーE1」を得た。
また、得られたポリマーE1の質量平均分子量は58,600であり、数平均分子量は16,100であった。
送液ユニット :LC-20AD 株式会社島津製作所
UV-VIS検出器 :SPD-20A 株式会社島津製作所
検出波長 :254nm
カラム :Gelpack(登録商標)GL-A160S/GL-A150S 日立化成株式会社
溶離液 :THF(HPLC用、安定剤を含有) 和光純薬工業株式会社
流量 :1ml/min
カラム温度 :40℃
分子量標準物質 :標準ポリスチレン(PStQuick B/C/D) 東ソー株式会社
三口丸底フラスコに、L1(2.767g、5.0mmol)、B1(0.964g、2.0mmol)、T1(0.542g、2.0mmol)、T13(0.386g、2.0mmol)、メチルトリ-n-オクチルアンモニウムクロリド(0.034g、Aliquat336/Alfa Aesar製)、トルエン(38.54ml)、及び、3.0モル%水酸化カリウム水溶液(7.79ml)を加えた。
以降は、実施例1の方法と同様にして、電荷輸送性ポリマー「ポリマーE2」を調製した。得られたポリマーE2の質量平均分子量は58,200であり、数平均分子量は14,900であった。
三口丸底フラスコに、L1(2.767g、5.0mmol)、B1(0.964g、2.0mmol)、T1(0.054g、0.2mmol)、T15(1.113g、3.8mmol)、メチルトリ-n-オクチルアンモニウムクロリド(0.034g、Aliquat336/Alfa Aesar製)、トルエン(40.57ml)、及び、3.0モル%水酸化カリウム水溶液(7.79ml)を加えた。
以降は、実施例1の方法と同様にして、電荷輸送性ポリマー「ポリマーE3」を調製した。得られたポリマーE3の質量平均分子量は52,000であり、数平均分子量は15,500であった。
三口丸底フラスコに、L1(2.767g、5.0mmol)、B1(0.964g、2.0mmol)、T1(0.108g、0.4mmol)、T15(1.055g、3.6mmol)、メチルトリ-n-オクチルアンモニウムクロリド(0.034g、Aliquat336/Alfa Aesar製)、トルエン(40.53ml)、及び、3.0モル%水酸化カリウム水溶液(7.79ml)を加えた。
以降は、実施例1の方法と同様にして、電荷輸送性ポリマー「ポリマーE4」を調製した。得られたポリマーE4の質量平均分子量は54,700であり、数平均分子量は21,600であった。
三口丸底フラスコに、L1(2.767g、5.0mmol)、B1(0.964g、2.0mmol)、T1(0.163g、0.6mmol)、T15(0.996g、3.4mmol)、メチルトリ-n-オクチルアンモニウムクロリド(0.034g、Aliquat336/Alfa Aesar製)、トルエン(40.50ml)、及び、3.0モル%水酸化カリウム水溶液(7.79ml)を加えた。
以降は、実施例1の方法と同様にして、電荷輸送性ポリマー「ポリマーE5」を調製した。得られたポリマーE5の質量平均分子量は53,400であり、数平均分子量は21,400であった。
三口丸底フラスコに、L1(2.767g、5.0mmol)、B1(0.964g、2.0mmol)、T1(0.271g、1.0mmol)、T15(0.879g、3.0mmol)、メチルトリ-n-オクチルアンモニウムクロリド(0.034g、Aliquat336/Alfa Aesar製)、トルエン(40.42ml)、及び、3.0モル%水酸化カリウム水溶液(7.79ml)を加えた。
以降は、実施例1の方法と同様にして、電荷輸送性ポリマー「ポリマーE6」を調製した。得られたポリマーE6の質量平均分子量は74,200であり、数平均分子量は16,500であった。
三口丸底フラスコに、L1(2.767g、5.0mmol)、B1(0.964g、2.0mmol)、T1(0.542g、2.0mmol)、T15(0.586g、2.0mmol)、メチルトリ-n-オクチルアンモニウムクロリド(0.034g、Aliquat336/Alfa Aesar製)、トルエン(40.24ml)、及び、3.0モル%水酸化カリウム水溶液(7.79ml)を加えた。
以降は、実施例1の方法と同様にして、電荷輸送性ポリマー「ポリマーE7」を調製した。得られたポリマーE7の質量平均分子量は51,600であり、数平均分子量は17,300であった。
三口丸底フラスコに、L1(2.767g、5.0mmol)、B1(0.964g、2.0mmol)、T1(0.651g、2.4mmol)、T15(0.469g、1.6mmol)、メチルトリ-n-オクチルアンモニウムクロリド(0.034g、Aliquat336/Alfa Aesar製)、トルエン(40.16ml)、及び、3.0モル%水酸化カリウム水溶液(7.79ml)を加えた。
以降は、実施例1の方法と同様にして、電荷輸送性ポリマー「ポリマーE8」を調製した。得られたポリマーE8の質量平均分子量は55,600であり、数平均分子量は17,500であった。
三口丸底フラスコに、L1(2.767g、5.0mmol)、B1(0.964g、2.0mmol)、T1(0.814g、3.0mmol)、T15(0.293g、1.0mmol)、メチルトリ-n-オクチルアンモニウムクロリド(0.034g、Aliquat336/Alfa Aesar製)、トルエン(40.05ml)、及び、3.0モル%水酸化カリウム水溶液(7.79ml)を加えた。
以降は、実施例1の方法と同様にして、電荷輸送性ポリマー「ポリマーE9」を調製した。得られたポリマーE9の質量平均分子量は53,000であり、数平均分子量は16,300であった。
三口丸底フラスコに、L2(2.576g、5.0mmol)、B1(0.964g、2.0mmol)、T1(0.542g、2.0mmol)、T15(0.586g、2.0mmol)、メチルトリ-n-オクチルアンモニウムクロリド(0.034g、Aliquat336/Alfa Aesar製)、トルエン(47.62ml)、及び、3.0モル%水酸化カリウム水溶液(7.79ml)を加えた。
以降は、実施例1の方法と同様にして、電荷輸送性ポリマー「ポリマーE10」を調製した。得られたポリマーE10の質量平均分子量は53,400であり、数平均分子量は17,100であった。
三口丸底フラスコに、L2(2.576g、5.0mmol)、B1(0.964g、2.0mmol)、T2(0.683g、2.0mmol)、T15(0.586g、2.0mmol)、メチルトリ-n-オクチルアンモニウムクロリド(0.034g、Aliquat336/Alfa Aesar製)、トルエン(62.97ml)、及び、3.0モル%水酸化カリウム水溶液(7.79ml)を加えた。
以降は、実施例1の方法と同様にして、電荷輸送性ポリマー「ポリマーE11」を調製した。得られたポリマーE11の質量平均分子量は52,000であり、数平均分子量は17,700であった。
三口丸底フラスコに、L2(2.576g、5.0mmol)、B1(0.964g、2.0mmol)、T3(0.366g、2.0mmol)、T15(0.586g、2.0mmol)、メチルトリ-n-オクチルアンモニウムクロリド(0.034g、Aliquat336/Alfa Aesar製)、トルエン(58.77ml)、及び、3.0モル%水酸化カリウム水溶液(7.79ml)を加えた。
以降は、実施例1の方法と同様にして、電荷輸送性ポリマー「ポリマーE12」を調製した。得られたポリマーE12の質量平均分子量は51,900であり、数平均分子量は17,600であった。
三口丸底フラスコに、L2(2.576g、5.0mmol)、B1(0.964g、2.0mmol)、T3(0.366g、2.0mmol)、T15(0.586g、2.0mmol)、メチルトリ-n-オクチルアンモニウムクロリド(0.034g、Aliquat336/Alfa Aesar製)、トルエン(45.78ml)、及び、3.0モル%水酸化カリウム水溶液(7.79ml)を加えた。
以降は、実施例1の方法と同様にして、電荷輸送性ポリマー「ポリマーE13」を調製した。得られたポリマーE13の質量平均分子量は62,200であり、数平均分子量は18,600であった。
三口丸底フラスコに、L2(2.576g、5.0mmol)、B1(0.964g、2.0mmol)、T3(0.366g、2.0mmol)、T15(0.586g、2.0mmol)、メチルトリ-n-オクチルアンモニウムクロリド(0.034g、Aliquat336/Alfa Aesar製)、トルエン(37.13ml)、及び、3.0モル%水酸化カリウム水溶液(7.79ml)を加えた。
以降は、実施例1の方法と同様にして、電荷輸送性ポリマー「ポリマーE14」を調製した。得られたポリマーE14の質量平均分子量は81,000であり、数平均分子量は20,000であった。
三口丸底フラスコに、L2(2.576g、5.0mmol)、B1(0.964g、2.0mmol)、T3(0.366g、2.0mmol)、T15(0.586g、2.0mmol)、メチルトリ-n-オクチルアンモニウムクロリド(0.034g、Aliquat336/Alfa Aesar製)、トルエン(26.31ml)、及び、3.0モル%水酸化カリウム水溶液(7.79ml)を加えた。
以降は、実施例1の方法と同様にして、電荷輸送性ポリマー「ポリマーE15」を調製した。得られたポリマーE15の質量平均分子量は112,700であり、数平均分子量は21,400であった。
三口丸底フラスコに、L2(2.576g、5.0mmol)、B1(0.964g、2.0mmol)、T4(0.366g、2.0mmol)、T15(0.586g、2.0mmol)、メチルトリ-n-オクチルアンモニウムクロリド(0.034g、Aliquat336/Alfa Aesar製)、トルエン(58.77ml)、及び、3.0モル%水酸化カリウム水溶液(7.79ml)を加えた。
以降は、実施例1の方法と同様にして、電荷輸送性ポリマー「ポリマーE16」を調製した。得られたポリマーE16の質量平均分子量は54,200であり、数平均分子量は17,200であった。
三口丸底フラスコに、L2(2.576g、5.0mmol)、B1(0.964g、2.0mmol)、T5(0.354g、2.0mmol)、T15(0.586g、2.0mmol)、メチルトリ-n-オクチルアンモニウムクロリド(0.034g、Aliquat336/Alfa Aesar製)、トルエン(58.61ml)、及び、3.0モル%水酸化カリウム水溶液(7.79ml)を加えた。
以降は、実施例1の方法と同様にして、電荷輸送性ポリマー「ポリマーE17」を調製した。得られたポリマーE17の質量平均分子量は55,500であり、数平均分子量は18,200であった。
三口丸底フラスコに、L2(2.576g、5.0mmol)、B2(0.960g、2.0mmol)、T3(0.366g、2.0mmol)、T15(0.586g、2.0mmol)、メチルトリ-n-オクチルアンモニウムクロリド(0.034g、Aliquat336/Alfa Aesar製)、トルエン(67.98ml)、及び、3.0モル%水酸化カリウム水溶液(7.79ml)を加えた。
以降は、実施例1の方法と同様にして、電荷輸送性ポリマー「ポリマーE18」を調製した。得られたポリマーE18の質量平均分子量は121,000であり、数平均分子量は17,000であった。
三口丸底フラスコに、L1(3.043g、5.500mmol)、L3(2.086g、5.000mmol)、メチルトリ-n-オクチルアンモニウムクロリド(0.044g、Aliquat336/Alfa Aesar製)、トルエン(42.43ml)、及び、3.0モル%水酸化カリウム水溶液(10.13ml)を加えた。
三口丸底フラスコに撹拌子を入れ、還流管、窒素供給ライン(窒素供給量400ml/分)を取り付けた。加熱源として、オイルバスを使用し、60℃にて、スターラー撹拌を30分間行い、上記材料を溶解させた。
別途調製した上記Pd触媒溶液(1.11ml)をこの三口丸底フラスコに加え、加熱還流を30分間行った後、予め調製したトルエン溶液(トルエン(3.64ml)中に、T1(0.542g、2.0mmol)、T15(0.586g、2.0mmol)を加えた溶液)を加え、更に加熱還流を1時間行った。
以降は、実施例1の方法と同様にして、電荷輸送性ポリマー「ポリマーE19」を調製した。得られたポリマーE19の質量平均分子量は10,300であり、数平均分子量は6,800であった。
三口丸底フラスコに、L1(2.767g、5.0mmol)、B1(0.964g、2.0mmol)、T1(1.085g、4.0mmol)、メチルトリ-n-オクチルアンモニウムクロリド(0.034g、Aliquat336/Alfa Aesar製)、トルエン(39.87ml)、及び、3.0モル%水酸化カリウム水溶液(7.79ml)を加えた。
以降は、実施例1の方法と同様にして、電荷輸送性ポリマー「ポリマーC1」を調製した。得られたポリマーC1の質量平均分子量は58,800であり、数平均分子量は15,400であった。
三口丸底フラスコに、L1(2.767g、5.0mmol)、B1(0.964g、2.0mmol)、T1(0.542g、2.0mmol)、T6(0.314g、2.0mmol)、メチルトリ-n-オクチルアンモニウムクロリド(0.034g、Aliquat336/Alfa Aesar製)、トルエン(37.93ml)、及び、3.0モル%水酸化カリウム水溶液(7.79ml)を加えた。
以降は、実施例1の方法と同様にして、電荷輸送性ポリマー「ポリマーC2」を調製した。得られたポリマーC2の質量平均分子量は62,400であり、数平均分子量は12,600であった。
三口丸底フラスコに、L1(2.767g、5.0mmol)、B1(0.964g、2.0mmol)、T1(0.542g、2.0mmol)、T7(0.538g、2.0mmol)、メチルトリ-n-オクチルアンモニウムクロリド(0.034g、Aliquat336/Alfa Aesar製)、トルエン(39.83ml)、及び、3.0モル%水酸化カリウム水溶液(7.79ml)を加えた。
以降は、実施例1の方法と同様にして、電荷輸送性ポリマー「ポリマーC3」を調製した。得られたポリマーC3の質量平均分子量は51,500であり、数平均分子量は15,000であった。
三口丸底フラスコに、L1(2.767g、5.0mmol)、B1(0.964g、2.0mmol)、T1(0.542g、2.0mmol)、T8(0.434g、2.0mmol)、メチルトリ-n-オクチルアンモニウムクロリド(0.034g、Aliquat336/Alfa Aesar製)、トルエン(38.95ml)、及び、3.0モル%水酸化カリウム水溶液(7.79ml)を加えた。
以降は、実施例1の方法と同様にして、電荷輸送性ポリマー「ポリマーC4」を調製した。得られたポリマーC4の質量平均分子量は53,700であり、数平均分子量は14,200であった。
三口丸底フラスコに、L1(2.767g、5.0mmol)、B1(0.964g、2.0mmol)、T1(0.542g、2.0mmol)、T9(0.370g、2.0mmol)、メチルトリ-n-オクチルアンモニウムクロリド(0.034g、Aliquat336/Alfa Aesar製)、トルエン(38.41ml)、及び、3.0モル%水酸化カリウム水溶液(7.79ml)を加えた。
以降は、実施例1の方法と同様にして、電荷輸送性ポリマー「ポリマーC5」を調製した。得られたポリマーC5の質量平均分子量は57,500であり、数平均分子量は13,600であった。
三口丸底フラスコに、L1(2.767g、5.0mmol)、B1(0.964g、2.0mmol)、T1(0.542g、2.0mmol)、T10(0.350g、2.0mmol)、メチルトリ-n-オクチルアンモニウムクロリド(0.034g、Aliquat336/Alfa Aesar製)、トルエン(38.24ml)、及び、3.0モル%水酸化カリウム水溶液(7.79ml)を加えた。
以降は、実施例1の方法と同様にして、電荷輸送性ポリマー「ポリマーC6」を調製した。得られたポリマーC6の質量平均分子量は54,300であり、数平均分子量は11,500であった。
三口丸底フラスコに、L1(2.767g、5.0mmol)、B1(0.964g、2.0mmol)、T1(0.542g、2.0mmol)、T11(0.450g、2.0mmol)、メチルトリ-n-オクチルアンモニウムクロリド(0.034g、Aliquat336/Alfa Aesar製)、トルエン(39.08ml)、及び、3.0モル%水酸化カリウム水溶液(7.79ml)を加えた。
以降は、実施例1の方法と同様にして、電荷輸送性ポリマー「ポリマーC7」を調製した。得られたポリマーC7の質量平均分子量は55,900であり、数平均分子量は14,200であった。
三口丸底フラスコに、L2(2.576g、5.0mmol)、B1(0.964g、2.0mmol)、T2(1.365g、4.0mmol)、メチルトリ-n-オクチルアンモニウムクロリド(0.034g、Aliquat336/Alfa Aesar製)、トルエン(64.26ml)、及び、3.0モル%水酸化カリウム水溶液(7.79ml)を加えた。
以降は、実施例1の方法と同様にして、電荷輸送性ポリマー「ポリマーC8」を調製した。得られたポリマーC8の質量平均分子量は45,600であり、数平均分子量は17,100であった。
三口丸底フラスコに、L2(2.576g、5.0mmol)、B1(0.964g、2.0mmol)、T1(0.542g、2.0mmol)、T7(0.538g、2.0mmol)、メチルトリ-n-オクチルアンモニウムクロリド(0.034g、Aliquat336/Alfa Aesar製)、トルエン(47.21ml)、及び、3.0モル%水酸化カリウム水溶液(7.79ml)を加えた。
以降は、実施例1の方法と同様にして、電荷輸送性ポリマー「ポリマーC9」を調製した。得られたポリマーC9の質量平均分子量は53,900であり、数平均分子量は14,900であった。
三口丸底フラスコに、L2(2.576g、5.0mmol)、B1(0.964g、2.0mmol)、T2(0.683g、2.0mmol)、T7(0.538g、2.0mmol)、メチルトリ-n-オクチルアンモニウムクロリド(0.034g、Aliquat336/Alfa Aesar製)、トルエン(62.34ml)、及び、3.0モル%水酸化カリウム水溶液(7.79ml)を加えた。
以降は、実施例1の方法と同様にして、電荷輸送性ポリマー「ポリマーC10」を調製した。得られたポリマーC10の質量平均分子量は51,100であり、数平均分子量は17,300であった。
三口丸底フラスコに、L2(2.576g、5.0mmol)、B1(0.964g、2.0mmol)、T3(0.366g、2.0mmol)、T7(0.538g、2.0mmol)、メチルトリ-n-オクチルアンモニウムクロリド(0.034g、Aliquat336/Alfa Aesar製)、トルエン(67.31ml)、及び、3.0モル%水酸化カリウム水溶液(7.79ml)を加えた。
以降は、実施例1の方法と同様にして、電荷輸送性ポリマー「ポリマーC11」を調製した。得られたポリマーC11の質量平均分子量は52,700であり、数平均分子量は13,200であった。
三口丸底フラスコに、L2(2.576g、5.0mmol)、B1(0.964g、2.0mmol)、T4(0.366g、2.0mmol)、T7(0.538g、2.0mmol)、メチルトリ-n-オクチルアンモニウムクロリド(0.034g、Aliquat336/Alfa Aesar製)、トルエン(67.31ml)、及び、3.0モル%水酸化カリウム水溶液(7.79ml)を加えた。
以降は、実施例1の方法と同様にして、電荷輸送性ポリマー「ポリマーC12」を調製した。得られたポリマーC12の質量平均分子量は60,800であり、数平均分子量は13,700であった。
三口丸底フラスコに、L2(2.576g、5.0mmol)、B1(0.964g、2.0mmol)、T5(0.354g、2.0mmol)、T7(0.538g、2.0mmol)、メチルトリ-n-オクチルアンモニウムクロリド(0.034g、Aliquat336/Alfa Aesar製)、トルエン(67.13ml)、及び、3.0モル%水酸化カリウム水溶液(7.79ml)を加えた。
以降は、実施例1の方法と同様にして、電荷輸送性ポリマー「ポリマーC13」を調製した。得られたポリマーC13の質量平均分子量は57,100であり、数平均分子量は13,600であった。
三口丸底フラスコに、L2(2.576g、5.0mmol)、B2(0.960g、2.0mmol)、T3(0.366g、2.0mmol)、T7(0.538g、2.0mmol)、メチルトリ-n-オクチルアンモニウムクロリド(0.034g、Aliquat336/Alfa Aesar製)、トルエン(67.25ml)、及び、3.0モル%水酸化カリウム水溶液(7.79ml)を加えた。
以降は、実施例1の方法と同様にして、電荷輸送性ポリマー「ポリマーC14」を調製した。得られたポリマーC14の質量平均分子量は114,500であり、数平均分子量は16,600であった。
三口丸底フラスコに、L1(3.043g、5.500mmol)、L3(2.086g、5.000mmol)、メチルトリ-n-オクチルアンモニウムクロリド(0.044g、Aliquat336/Alfa Aesar製)、トルエン(42.43ml)、及び、3.0モル%水酸化カリウム水溶液(10.13ml)を加えた。
三口丸底フラスコに撹拌子を入れ、還流管、窒素供給ライン(窒素供給量400ml/分)を取り付けた。加熱源として、オイルバスを使用し、60℃にて、スターラー撹拌を30分間行い、上記材料を溶解させた。
別途調製した上記Pd触媒溶液(1.11ml)をこの三口丸底フラスコに加え、加熱還流を30分間行った後、予め調製したトルエン溶液(トルエン(3.66ml)中に、T1(0.542g、2.0mmol)、T7(0.538g、2.0mmol)を加えた溶液)を加え、更に加熱還流を1時間行った。
以降は、実施例1の方法と同様にして、電荷輸送性ポリマー「ポリマーC15」を調製した。得られたポリマーC15の質量平均分子量は10,400であり、数平均分子量は6,400であった。
以下に従い、ポリマーE1~E19及びポリマーC1~C15の溶媒への溶解性の評価を実施した。
(溶解時間試験)
ポリマーに含まれる粗い粒子を、乳鉢を用いてすり潰し、ポリマーを一定の粒子径の粉体にした。ポリマーの含有量が溶液の質量に対し1.0質量%、溶液の体積が1mlになるように、6mlスクリュー管に、ポリマー(8.7mg)を量り採り、トルエン(865.0mg)(25℃)を加えた。続いて、撹拌子(10×Φ4mm)を入れ、ウォーターバス(25℃)中で、撹拌(600rpm)した。
撹拌開始からポリマーが完全に溶解するまでの溶解時間を計測した。なお、「完全に溶解」した状態は、目視にて、明らかに不溶のポリマーがなきこと、濁りなきこと、かつ、透明であることとした。
実施例中、一定の粒子径の粉体とは、体積基準による平均粒径が20~40μmである粉体をいう。平均粒径は、レーザー回折散乱式の粒度分布測定装置により測定されるメジアン径である。
A:短縮時間50%超
B:短縮時間40%超50%以下
C:短縮時間30%超40%以下
D:短縮時間20%超30%以下
E:短縮時間10%超20%以下
F:短縮時間0%超10%以下
G:短縮時間0%以下
ポリマーに含まれる粗い粒子を、乳鉢を用いてすり潰し、ポリマーを一定の粒子径の粉体にした。6mlスクリュー管に、ポリマーの含有量が溶液の質量に対し4.0質量%、3.0質量%、2.0質量%、又は1.0質量%になるように、ポリマー及びトルエン(25℃)を加え、25℃の環境にて、振とうし、溶解の可否(可溶又は不溶)を確認した。なお、「可溶」は、目視にて、明らかに不溶のポリマーがなきこと、濁りなきこと、かつ、透明であることとした。
A:濃度4.0質量%及び3.0質量%のときポリマーが可溶
B:濃度2.0質量%のときポリマーが可溶、濃度3.0質量%のときポリマーが不溶
C:濃度1.0質量%のときポリマーが可溶、濃度2.0質量%のときポリマーが不溶
D:濃度1.0質量%のときポリマーが不溶
(溶解時間試験)
ポリマーに含まれる粗い粒子を、乳鉢を用いてすり潰し、ポリマーを一定の粒子径の粉体にした。ポリマーの含有量が溶液の質量に対し1.0質量%、溶液の体積が1mlになるように、6mlスクリュー管に、ポリマー(10.1mg)を量り採り、アニソール(1002.0mg)(25℃)を加えた。続いて、撹拌子(10×Φ4mm)を入れ、ウォーターバス(25℃)中で、撹拌(600rpm)した。
撹拌開始からポリマーが完全に溶解するまでの溶解時間を計測した。なお、「完全に溶解」した状態は、目視にて、明らかに不溶のポリマーがなきこと、濁りなきこと、かつ、透明であることとした。
A:短縮時間50%超
B:短縮時間40%超50%以下
C:短縮時間30%超40%以下
D:短縮時間20%超30%以下
E:短縮時間10%超20%以下
F:短縮時間0%超10%以下
G:短縮時間0%以下
ポリマーに含まれる粗い粒子を、乳鉢を用いてすり潰し、ポリマーを一定の粒子径の粉体にした。6mlスクリュー管に、ポリマーの含有量が溶液の質量に対し4.0質量%、3.0質量%、2.0質量%、又は1.0質量%の濃度になるように、ポリマー及びアニソール(25℃)を加え、25℃の環境にて、振とうし、溶解の可否(可溶又は不溶)を確認した。なお、「可溶」は、目視にて、明らかに不溶のポリマーがなきこと、濁りなきこと、かつ、透明であることとした。
A:濃度4.0質量%及び3.0質量%以上のときポリマーが可溶
B:濃度2.0質量%のときポリマーが可溶、濃度3.0質量%のときポリマーが不溶
C:濃度1.0質量%のときポリマーが可溶、濃度2.0質量%のときポリマーが不溶
D:濃度1.0質量%のときポリマーが不溶
(溶解時間試験)
ポリマーに含まれる粗い粒子を、乳鉢を用いてすり潰し、ポリマーを一定の粒子径の粉体にした。ポリマーの含有量が溶液の質量に対し1.0質量%、溶液の体積が1mlになるように、6mlスクリュー管に、ポリマー(10.2mg)を量り採り、安息香酸ブチル(1007.0mg)(25℃)を加えた。続いて、撹拌子(10×Φ4mm)を入れ、ウォーターバス(25℃)中で、撹拌(600rpm)した。
撹拌開始からポリマーが完全に溶解するまでの溶解時間を計測した。なお、「完全に溶解」した状態は、目視にて、明らかに不溶のポリマーがなきこと、濁りなきこと、かつ、透明であることとした。
A:可溶(180分以下)
B:可溶(180分超480分以下)
C:可溶(480分超)
D:不溶
ポリマーに含まれる粗い粒子を、乳鉢を用いてすり潰し、ポリマーを一定の粒子径の粉体にした。6mlスクリュー管に、ポリマーの含有量が溶液の質量に対し4.0質量%、3.0質量%、2.0質量%、又は1.0質量%の濃度になるように、ポリマー及び安息香酸ブチル(25℃)を加え、25℃の環境にて、振とうし、溶解の可否(可溶又は不溶)を確認した。なお、「可溶」は、目視にて、明らかに不溶のポリマーがなきこと、濁りなきこと、かつ、透明であることとした。
A:濃度4.0質量%及び3.0質量%のときポリマーが可溶
B:濃度2.0質量%のときポリマーが可溶、濃度3.0質量%のときポリマーが不溶
C:濃度1.0質量%のときポリマーが可溶、濃度2.0質量%のときポリマーが不溶
D:濃度1.0質量%のときポリマーが不溶
以下に従い、ポリマーE1~E19及びポリマーC1~C15を用い、有機層を形成し、ポリマーの硬化性(有機層の耐溶剤性)の評価を実施した。
9mlスクリュー管に、ポリマー(50.0mg)及び下記重合開始剤(0.5mg)を量り採り、トルエン(4949.5mg)を加えポリマー及び重合開始剤を溶解させ、インク組成物を調製した。インク組成物をポリテトラフルオロエチレン(PTFE)フィルタ(孔径0.2μm)にて、ろ過し、石英基板(縦22mm×横29mm×厚0.7mm)上に滴下し、スピンコーターにより塗布膜を成膜した。続いて、210℃、30分間、大気下の条件で加熱硬化を実施し、石英基板上に膜厚30nmの有機層を形成した。
A:残膜率99%以上100%以下
B:残膜率90%以上99%未満
C:残膜率50%以上90%未満
D:残膜率50%未満
以下に従い、ポリマーE1~E19及びポリマーC1~C15を用い、評価用のデバイス(ホールオンリーデバイス(以下、「HOD」という。)を作製し、導電性及び熱安定性の評価を実施した。HODの断面模式図を図1に示す。図1において、1は基板、2は陽極、3は有機層、4は陰極を表す。
(導電性評価用HODの作製)
9mlスクリュー管に、ポリマー(50.0mg)及び下記重合開始剤(0.5mg)を量り採り、トルエン(2449.5mg)を加えポリマー及び重合開始剤を溶解させ、インク組成物を調製した。インク組成物をポリテトラフルオロエチレン(PTFE)フィルタ(孔径0.2μm)にて、ろ過した。インク組成物を、1.6mm幅にパターニングした酸化インジウムスズ(ITO)電極を形成した石英基板(縦22mm×横29mm×厚0.7mm、以下、「ITO基板」という。)上に滴下し、スピンコーターにより塗布膜を成膜した。続いて、210℃、30分間、大気下の条件で加熱硬化を実施し、ITO基板上に膜厚100nmの有機層を形成した。
加熱硬化後に、更に200℃、60分間、窒素雰囲気下の条件で追加加熱を実施し、ITO基板上に膜厚100nmの有機層を形成した以外は、導電性評価用HODの作製と同様にして熱安定性1評価用HODを作製した。
加熱硬化後に、更に230℃、60分間、窒素雰囲気下の条件で追加加熱を実施し、ITO基板上に膜厚100nmの有機層を形成した以外は、導電性評価用HODの作製と同様にして熱安定性2評価用HODを作製した。
上記で作製した導電性評価用HODに電圧を印加し、導電性の評価を実施した。
導電性の有無について、以下の2段階で評価した。評価の結果がAであれば、有機層は正孔注入機能を有する。
A:導電性-有
B:導電性-無
印加電圧を変化させ、電流密度300mA/cm2時の電圧を測定した。導電性を以下の3段階で評価した。
A:電圧3.00V未満
B:電圧3.00V以上5.00V未満
C:電圧5.00V以上
(熱安定性1評価)
上記で作製した熱安定性1評価用HODに電圧を印加し、印加電圧を変化させ、電流密度300mA/cm2時の電圧を測定した。導電性評価用HODと熱安定性1評価用HODとの電圧差から、熱安定性を以下の5段階にて評価した。電圧差は、以下の式を用いて、算出した。電圧差が小さいほど、耐熱性が優れている。
B:電圧差0.20V以上0.50V未満
C:電圧差0.50V以上1.00V未満
D:電圧差1.00V以上2.00V未満
E:電圧差2.00V以上
上記で作製した熱安定性2評価用HODに電圧を印加し、印加電圧を変化させ、電流密度300mA/cm2時の電圧を測定した。導電性評価用HODと熱安定性2評価用HODとの電圧差から、熱安定性を以下の5段階にて評価した。電圧差は、以下の式を用いて、算出した。電圧差が小さいほど、耐熱性が優れている。
B:電圧差0.20V以上0.50V未満
C:電圧差0.50V以上1.00V未満
D:電圧差1.00V以上2.00V未満
E:電圧差2.00V以上
2 陽極
3 有機層
4 陰極
Claims (15)
- 分子鎖と、該分子鎖に結合する末端基とを含み、
前記末端基が、重合性官能基を含む末端基Pと、電子求引性置換基により置換された芳香族炭化水素基を含む末端基EWとを含み、
前記末端基Pが下記式(P1)で表される末端基を含み、
前記芳香族炭化水素基の環を構成する炭素原子について、前記分子鎖に結合する炭素原子の番号を1とし、隣接する炭素原子に順に番号をつけたとき、前記電子求引性置換基が、1+2n(nは、1以上の整数である。)の炭素原子に結合している、電荷輸送性ポリマー。
[式中、Arは、置換又は非置換の芳香環基を表し、Lは、連結基を表し、PGは、置換又は非置換の重合性官能基を表す。a及びxは、それぞれ独立に0又は1を表し、yは、1以上の整数を表す。ただし、式(P1)は、-Ar-CH2-O-(CH2)n-O-(nは、1~6の整数である。)で表される部分構造を含まない。] - 電荷輸送性ポリマーの全構造単位を基準とし、前記末端基を含む構造単位を3~60モル%含む、請求項1に記載の電荷輸送性ポリマー。
- 前記電子求引性置換基が、ハロゲン基、ハロゲン置換アルキル基、ニトロ基、シアノ基、スルホン酸基、及びスルホキシド基からなる群から選択される1種以上を含む、請求項1又は2に記載の電荷輸送性ポリマー。
- 前記末端基を基準とし、前記末端基EWを15~95モル%含む、請求項1~3のいずれかに記載の電荷輸送性ポリマー。
- 前記重合性官能基が、炭素-炭素多重結合を有する基、小員環を有する基、及び複素環基からなる群から選択される1種以上を含む、請求項1~4のいずれかに記載の電荷輸送性ポリマー。
- 置換又は非置換の、芳香族アミン構造、カルバゾール構造、チオフェン構造、ビチオフェン構造、ベンゼン構造、及びフルオレン構造からなる群から選択される1種以上の構造を含む、請求項1~5のいずれか1項に記載の電荷輸送性ポリマー。
- 3方向以上に分岐した構造を有する、請求項1~6のいずれかに記載の電荷輸送性ポリマー。
- 請求項1~7のいずれかに記載の電荷輸送性ポリマーを含有する、電荷輸送性材料。
- 請求項1~7のいずれかに記載の電荷輸送性ポリマー又は請求項8に記載の電荷輸送性材料と、溶媒とを含有する、インク組成物。
- 請求項1~7のいずれかに記載の電荷輸送性ポリマー、請求項8に記載の電荷輸送性材料、又は、請求項9に記載のインク組成物を用いて形成された、有機層。
- 請求項10に記載の有機層を有する、有機エレクトロニクス素子。
- 請求項10に記載の有機層を有する、有機エレクトロルミネセンス素子。
- 請求項12に記載の有機エレクトロルミネセンス素子を備えた、表示素子。
- 請求項12に記載の有機エレクトロルミネセンス素子を備えた、照明装置。
- 請求項14に記載の照明装置と、表示手段として液晶素子とを備えた、表示装置。
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| PCT/JP2017/038978 WO2019082396A1 (ja) | 2017-10-27 | 2017-10-27 | 電荷輸送性ポリマー及び有機エレクトロニクス素子 |
| US16/759,144 US12202934B2 (en) | 2017-10-27 | 2017-10-27 | Charge-transport polymer and organic electronic element |
| CN201780096199.4A CN111247656B (zh) | 2017-10-27 | 2017-10-27 | 电荷传输性聚合物及有机电子元件 |
| EP17930032.2A EP3703144B1 (en) | 2017-10-27 | 2017-10-27 | Charge-transport polymer and organic electronic element |
| KR1020207013297A KR102462160B1 (ko) | 2017-10-27 | 2017-10-27 | 전하 수송성 폴리머 및 유기 일렉트로닉스 소자 |
| TW107137584A TWI842682B (zh) | 2017-10-27 | 2018-10-24 | 電荷輸送性聚合物、電荷輸送性材料、油墨組成物、有機層、有機電子元件、有機電致發光元件、顯示元件、照明裝置及顯示裝置 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020217521A1 (ja) * | 2019-04-26 | 2020-10-29 | 日立化成株式会社 | 有機エレクトロニクス材料及び電荷輸送性ポリマーの製造方法 |
| JP2022055988A (ja) * | 2020-09-29 | 2022-04-08 | 昭和電工マテリアルズ株式会社 | 電荷輸送性材料、インク組成物、有機層、有機エレクトロニクス素子、有機エレクトロルミネセンス素子、照明装置、表示素子、及び表示装置 |
| JP2022055978A (ja) * | 2020-09-29 | 2022-04-08 | 昭和電工マテリアルズ株式会社 | 電荷輸送性ポリマー、電荷輸送性材料、インク組成物、有機層、有機エレクトロニクス素子、有機エレクトロルミネセンス素子、照明装置、表示素子、及び表示装置 |
| WO2025013809A1 (ja) * | 2023-07-10 | 2025-01-16 | 株式会社レゾナック | 有機エレクトロニクス材料、有機層、有機エレクトロニクス素子、表示素子、照明装置、及び表示装置 |
| WO2025013808A1 (ja) * | 2023-07-10 | 2025-01-16 | 株式会社レゾナック | 有機エレクトロニクス材料、有機層、有機エレクトロニクス素子 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010140553A1 (ja) | 2009-06-01 | 2010-12-09 | 日立化成工業株式会社 | 有機エレクトロニクス材料およびそれを含むインク組成物、ならびにそれらを用いて形成された有機薄膜、有機エレクトロニクス素子、有機エレクトロルミネセンス素子、照明装置および表示装置 |
| JP2013155294A (ja) * | 2012-01-30 | 2013-08-15 | Toyo Ink Sc Holdings Co Ltd | 有機エレクトロルミネッセンス素子用材料およびその用途 |
| JP2014167976A (ja) * | 2013-02-28 | 2014-09-11 | Hitachi Chemical Co Ltd | 有機エレクトロニクス素子及びその製造方法 |
| JP2017123438A (ja) * | 2016-01-08 | 2017-07-13 | 日立化成株式会社 | 有機エレクトロニクス材料、有機エレクトロニクス素子、及び有機エレクトロルミネセンス素子 |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5256568B2 (ja) * | 2004-12-28 | 2013-08-07 | 住友化学株式会社 | 高分子化合物およびそれを用いた高分子発光素子 |
| TW200710122A (en) * | 2005-06-22 | 2007-03-16 | Sumitomo Chemical Co | Polymer material and polymeric light-emitting element |
| GB2442655B (en) * | 2005-06-22 | 2010-05-05 | Sumitomo Chemical Co | Polymeric material and polymeric luminescent element |
| JP5491796B2 (ja) * | 2008-08-11 | 2014-05-14 | 三菱化学株式会社 | 電荷輸送性ポリマー、有機電界発光素子用組成物、有機電界発光素子、有機elディスプレイ及び有機el照明 |
| JP5154391B2 (ja) | 2008-12-11 | 2013-02-27 | 三星電子株式会社 | 置換情報記憶素子アレイおよびそれを用いた置換情報読出し装置 |
| US20110315964A1 (en) * | 2009-03-11 | 2011-12-29 | Idemitsu Losan Co., Ltd. | Novel polymerizable monomer, and material for organic device, hole injection/transport material, material for organic electroluminescent element and organic electroluminescent element each comprising polymer (polymeric compound) of the polymerizable monomer |
| TWI614277B (zh) * | 2011-09-26 | 2018-02-11 | Hitachi Chemical Co Ltd | 溶解度變化的組成物、電洞輸送材料組成物及使用這些組成物而成的有機電子元件 |
| JP5924348B2 (ja) * | 2011-11-30 | 2016-05-25 | 日立化成株式会社 | 有機エレクトロニクス材料、インク組成物、及び有機エレクトロニクス素子 |
| KR101695139B1 (ko) * | 2011-11-30 | 2017-01-10 | 히타치가세이가부시끼가이샤 | 유기 일렉트로닉스 재료, 잉크 조성물 및 유기 일렉트로닉스 소자 |
| JP2013209300A (ja) * | 2012-03-30 | 2013-10-10 | Toyo Ink Sc Holdings Co Ltd | 有機エレクトロルミネッセンス素子用材料およびその用途 |
| EP2862888B1 (en) * | 2012-06-18 | 2019-10-09 | Mitsubishi Chemical Corporation | Polymer compound, charge transporting polymer, composition for organic electroluminescent elements, organic electroluminescent element, organic el display device, and organic el lighting |
| JP2017069324A (ja) * | 2015-09-29 | 2017-04-06 | 日立化成株式会社 | 有機エレクトロニクス材料、有機層、有機エレクトロニクス素子、有機エレクトロルミネセンス素子、表示素子、照明装置、及び表示素子 |
| JP6683207B2 (ja) * | 2016-01-08 | 2020-04-15 | 日立化成株式会社 | 有機エレクトロニクス材料、有機エレクトロニクス素子、及び有機エレクトロルミネセンス素子 |
-
2017
- 2017-10-27 EP EP17930032.2A patent/EP3703144B1/en active Active
- 2017-10-27 WO PCT/JP2017/038978 patent/WO2019082396A1/ja not_active Ceased
- 2017-10-27 JP JP2019549980A patent/JP7031681B2/ja active Active
- 2017-10-27 KR KR1020207013297A patent/KR102462160B1/ko active Active
- 2017-10-27 US US16/759,144 patent/US12202934B2/en active Active
- 2017-10-27 CN CN201780096199.4A patent/CN111247656B/zh active Active
-
2018
- 2018-10-24 TW TW107137584A patent/TWI842682B/zh active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010140553A1 (ja) | 2009-06-01 | 2010-12-09 | 日立化成工業株式会社 | 有機エレクトロニクス材料およびそれを含むインク組成物、ならびにそれらを用いて形成された有機薄膜、有機エレクトロニクス素子、有機エレクトロルミネセンス素子、照明装置および表示装置 |
| JP2013155294A (ja) * | 2012-01-30 | 2013-08-15 | Toyo Ink Sc Holdings Co Ltd | 有機エレクトロルミネッセンス素子用材料およびその用途 |
| JP2014167976A (ja) * | 2013-02-28 | 2014-09-11 | Hitachi Chemical Co Ltd | 有機エレクトロニクス素子及びその製造方法 |
| JP2017123438A (ja) * | 2016-01-08 | 2017-07-13 | 日立化成株式会社 | 有機エレクトロニクス材料、有機エレクトロニクス素子、及び有機エレクトロルミネセンス素子 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP3703144A4 |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020217521A1 (ja) * | 2019-04-26 | 2020-10-29 | 日立化成株式会社 | 有機エレクトロニクス材料及び電荷輸送性ポリマーの製造方法 |
| JP2022055988A (ja) * | 2020-09-29 | 2022-04-08 | 昭和電工マテリアルズ株式会社 | 電荷輸送性材料、インク組成物、有機層、有機エレクトロニクス素子、有機エレクトロルミネセンス素子、照明装置、表示素子、及び表示装置 |
| JP2022055978A (ja) * | 2020-09-29 | 2022-04-08 | 昭和電工マテリアルズ株式会社 | 電荷輸送性ポリマー、電荷輸送性材料、インク組成物、有機層、有機エレクトロニクス素子、有機エレクトロルミネセンス素子、照明装置、表示素子、及び表示装置 |
| JP7593032B2 (ja) | 2020-09-29 | 2024-12-03 | 株式会社レゾナック | 電荷輸送性ポリマー、電荷輸送性材料、インク組成物、有機層、有機エレクトロニクス素子、有機エレクトロルミネセンス素子、照明装置、表示素子、及び表示装置 |
| JP7764685B2 (ja) | 2020-09-29 | 2025-11-06 | 株式会社レゾナック | 電荷輸送性材料、インク組成物、有機層、有機エレクトロニクス素子、有機エレクトロルミネセンス素子、照明装置、表示素子、及び表示装置 |
| WO2025013809A1 (ja) * | 2023-07-10 | 2025-01-16 | 株式会社レゾナック | 有機エレクトロニクス材料、有機層、有機エレクトロニクス素子、表示素子、照明装置、及び表示装置 |
| WO2025013808A1 (ja) * | 2023-07-10 | 2025-01-16 | 株式会社レゾナック | 有機エレクトロニクス材料、有機層、有機エレクトロニクス素子 |
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| Publication number | Publication date |
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| EP3703144A1 (en) | 2020-09-02 |
| EP3703144B1 (en) | 2024-07-10 |
| JPWO2019082396A1 (ja) | 2020-12-24 |
| CN111247656A (zh) | 2020-06-05 |
| TW201925377A (zh) | 2019-07-01 |
| US12202934B2 (en) | 2025-01-21 |
| TWI842682B (zh) | 2024-05-21 |
| EP3703144A4 (en) | 2021-06-30 |
| JP7031681B2 (ja) | 2022-03-08 |
| US20210179771A1 (en) | 2021-06-17 |
| CN111247656B (zh) | 2023-03-24 |
| KR20200073242A (ko) | 2020-06-23 |
| KR102462160B1 (ko) | 2022-11-01 |
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