WO2010018858A1 - 有機硫黄化合物およびその製造方法、並びにそれを用いた有機エレクトロルミネッセンス素子 - Google Patents
有機硫黄化合物およびその製造方法、並びにそれを用いた有機エレクトロルミネッセンス素子 Download PDFInfo
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- WO2010018858A1 WO2010018858A1 PCT/JP2009/064300 JP2009064300W WO2010018858A1 WO 2010018858 A1 WO2010018858 A1 WO 2010018858A1 JP 2009064300 W JP2009064300 W JP 2009064300W WO 2010018858 A1 WO2010018858 A1 WO 2010018858A1
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- 0 CC1*CCC1 Chemical compound CC1*CCC1 0.000 description 3
- BIWQNIMLAISTBV-UHFFFAOYSA-N Cc1ccc(B(O)O)cc1 Chemical compound Cc1ccc(B(O)O)cc1 BIWQNIMLAISTBV-UHFFFAOYSA-N 0.000 description 1
- IBHGHNFGHAWRIK-UHFFFAOYSA-N O=S(c1cc(Cl)cc(Cl)c1)(c1cc(Cl)cc(Cl)c1)=O Chemical compound O=S(c1cc(Cl)cc(Cl)c1)(c1cc(Cl)cc(Cl)c1)=O IBHGHNFGHAWRIK-UHFFFAOYSA-N 0.000 description 1
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- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
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Definitions
- the present invention relates to, for example, an organic sulfur compound useful as an electron transport material, a hole blocking material, and a host material of an organic electroluminescence element (hereinafter sometimes abbreviated as an organic EL element) and a method for producing the same.
- a compound having a compound structure as in the present invention has not been known so far, and use as an organic EL material has not been considered at all.
- JP 2007-277221 A Japanese Patent Laid-Open No. 2002-8860 JP 2007-254297 A JP 2006-135160 A
- An object of the present invention is to solve the above-described problems and provide an organic sulfur compound useful as an electron transport material, a hole blocking material, and a host material of an organic electroluminescence element by a simple method.
- the present invention is represented by the general formula (a1):
- Z 1 and Z 4 each independently represent an aromatic heterocyclic group excluding an optionally substituted trivalent aromatic hydrocarbon group or carbazolyl group;
- Z 2 and Z 3 each independently represent a divalent aromatic hydrocarbon group or aromatic heterocyclic group which may have a substituent,
- Ar 1 , Ar 2 , Ar 3 and Ar 4 each independently represent an aromatic heterocyclic group excluding an optionally substituted aromatic hydrocarbon group or carbazolyl group, and n is 0 Or it is 1, and two n may be the same or different.
- the organic sulfur compound of the present invention can be suitably used as an electron transport material, a hole blocking material, or a host material in an organic EL device.
- FIG. 3 is a diagram showing a layer configuration of organic EL elements manufactured in element manufacturing examples 1 to 4.
- FIG. 10 is a diagram showing a layer structure of organic EL elements manufactured in element manufacturing examples 5 to 7.
- the organic sulfur compound of the present invention will be described by being divided into two groups, a compound belonging to the general formula (a1) and a compound belonging to the general formula (b1).
- the monovalent, divalent and trivalent “aromatic hydrocarbon group” means a residue obtained by removing the valence number H from an aromatic hydrocarbon compound.
- the monovalent, divalent and trivalent “aromatic heterocyclic group” means a residue obtained by removing the valence number H from an aromatic heterocyclic compound.
- each parameter has the following meaning.
- A represents a thioether group, a sulfinyl group, or a sulfonyl group, that is, any group of the following formula.
- Z 1 and Z 4 are aromatic heterocyclic groups other than a trivalent aromatic hydrocarbon group or carbazolyl group which may have a substituent.
- the aromatic hydrocarbon compound from which a trivalent aromatic hydrocarbon group is derived include monocyclic compounds having one benzene ring and derivatives thereof, and two or more benzene rings such as biphenyl and terphenyl via a single bond. And a condensed polycyclic compound in which two or more benzene rings such as naphthalene, anthracene, and phenanthrene are condensed and bonded together.
- aromatic heterocyclic compound from which the aromatic heterocyclic group is derived examples include 6-membered ring compounds such as pyridine, pyrimidine and pyridazine, and 5-membered ring compounds such as pyrazole, thiophene, pyrrole and oxazole.
- Z 1 and Z 4 are preferably residues derived from a monocyclic compound, and examples thereof include residues derived from benzene, pyridine, pyrimidine, triazine, and imidazole. These residues include an alkyl group (preferably 6 or less carbon atoms), a cycloalkyl group (preferably a group having a 3- to 6-membered ring), an alkoxy group (preferably 6 or less carbon atoms), a halogen (preferably fluorine). May be substituted.
- Z 1 and Z 4 are preferably the following groups:
- Z 1 and Z 4 may be different, but are preferably the same.
- Z 1 and Z 4 are represented by the following groups.
- Z 2 and Z 3 are a divalent aromatic hydrocarbon group or aromatic heterocyclic group which may have a substituent.
- Aromatic hydrocarbon compounds from which a divalent aromatic hydrocarbon group is derived include monocyclic compounds having one benzene ring and derivatives thereof, and two or more benzene rings such as biphenyl and terphenyl via a single bond. And a condensed polycyclic compound in which two or more benzene rings such as naphthalene, anthracene, and phenanthrene are condensed and bonded together.
- aromatic heterocyclic compound from which the aromatic heterocyclic group is derived examples include 6-membered ring compounds such as pyridine, pyrimidine and pyridazine, and 5-membered ring compounds such as pyrazole, thiophene, pyrrole and oxazole.
- Z 2 and Z 3 are preferably residues derived from a monocyclic compound, and examples thereof include residues derived from benzene, pyridine and pyridazine. These residues include an alkyl group (preferably 6 or less carbon atoms), a cycloalkyl group (preferably a group having a 3- to 6-membered ring), an alkoxy group (preferably 6 or less carbon atoms), a halogen (preferably fluorine). May be substituted.
- Z 2 and Z 3 are preferably the following groups:
- Z 2 and Z 3 are represented by the following groups.
- n represents the number of Z 2 and Z 3 and is 0 or 1. When n is 0, it means that Z 1 and / or Z 4 are directly bonded to A. Two n's may be the same or different, but are preferably the same.
- Ar 1 , Ar 2 , Ar 3 and Ar 4 may be the same or different, and a monovalent aromatic heterocyclic ring excluding a monovalent aromatic hydrocarbon group or carbazolyl group which may have a substituent Indicates a group.
- the monovalent aromatic hydrocarbon group that is, the aryl group, include a phenyl group, a tolyl group, a fluorophenyl group, a xylyl group, a biphenylyl group, a naphthyl group, an anthryl group, and a phenanthryl group.
- heteroaryl groups examples include heteroaryl groups having a 6-membered ring structure such as pyridyl group, pyrimidyl group and pyridazyl group, pyrazolyl group, thienyl group, pyrrole group and oxazolyl group. And heteroaryl having a five-membered ring structure.
- a phenyl group and a pyridyl group are preferable.
- Ar 1 , Ar 2 , Ar 3 and Ar 4 may be the same or different, but preferably all are the same.
- Ar 1 , Ar 2 , Ar 3 and Ar 4 may have a substituent, and examples of the substituent include a substituent that can be bonded through a carbon atom, a substituent that can be bonded through an oxygen atom, Examples thereof include a substituent that can be bonded through a nitrogen atom, a substituent that can be bonded through a sulfur atom, and a halogen atom.
- Examples of the substituent that can be bonded through the carbon atom include alkyl groups such as a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, and a hexyl group; a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, a cyclohexyl group, Cycloalkyl group such as cycloheptyl group; Alkenyl group such as vinyl group, allyl group, propenyl group, cyclopropenyl group, cyclobutenyl group, cyclopentenyl group; quinolyl group, pyridyl group, pyrrolidyl group, pyrrolyl group, furyl group, thienyl group Heterocyclic groups such as phenyl group, tolyl group, fluorophenyl group, xylyl group, biphenylyl group,
- Examples of the substituent that can be bonded through the oxygen atom include a hydroxy group; an alkoxy group such as a methoxy group, an ethoxy group, a propoxy group, a butoxy group, a pentyloxy group, a hexyloxy group, a heptyloxy group, and a benzyloxy group; Examples thereof include aryloxy groups such as phenoxy group, toluyloxy group, and naphthyloxy group. These groups include various isomers.
- Examples of the substituent that can be bonded through the nitrogen atom include primary amino groups such as a methylamino group, an ethylamino group, a propylamino group, a butylamino group, a cyclohexylamino group, a phenylamino group, and a naphthylamino group; Secondary amino acids such as dimethylamino group, diethylamino group, dipropylamino group, dibutylamino group, methylethylamino group, methylpropylamino group, methylbutylamino group, diphenylamino group, N-methyl-N-methanesulfonylamino group A morpholino group, a piperidino group, a piperazinyl group, a pyrazolidinyl group, a pyrrolidino group, an indolyl group or the like; an imino group. These groups include various isomers.
- Examples of the substituent that can be bonded through the sulfur atom include a mercapto group; a thioalkyl group such as a thiomethyl group, a thioethyl group, and a thiopropyl group; and a thioaryl group such as a thiophenyl group, a thiotoluyl group, and a thionaphthyl group. These groups include various isomers.
- halogen atom examples include a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom.
- One of the preferable compound groups of the organic sulfur compound of the general formula (a1) is that in the formula (a1), Z 2 and Z 3 represent a phenylene group which may have a substituent, and Z 1 and Z 4 Is a trivalent residue optionally derived from benzene. These compounds are represented by the general formula (a2).
- Z 2 and Z 3 are more preferably 1,4-phenylene which may have a substituent, and these compounds are represented by the following general formula (a3).
- a compound in which A represents —S (O) 2 — is particularly preferable, and is represented by the general formula (a4).
- an arbitrary hydrogen atom on the benzene ring includes an alkyl group (preferably having a carbon number of 6 or less), a cycloalkyl group (preferably a group having a 3- to 6-membered ring), an alkoxy group (preferably having a carbon number of 6 or less), It may be substituted with halogen (preferably fluorine).
- organic sulfur compound examples include compounds of the formulas (a5) and (a6).
- Ar 11 represents a phenyl group, a tolyl group or a pyridyl group.
- the general formula (b1) is as follows.
- each parameter has the following meaning.
- A represents the meaning defined for formula (a1).
- Z 5 represents a trivalent aromatic hydrocarbon group or aromatic heterocyclic group which may have a substituent, and the aromatic hydrocarbon group or aromatic group described for Z 1 in the formula (a1) A heterocyclic group (preferable groups are the same).
- Ar 1 and Ar 2 each independently represent the aromatic hydrocarbon group or aromatic heterocyclic group described for Ar 1 and Ar 2 in the formula (a1) (preferable groups are also the same).
- M is 2 or 3.
- Ar represents an m-valent, that is, divalent or trivalent aromatic hydrocarbon group or aromatic heterocyclic group.
- Ar represents a divalent group, it represents the aromatic hydrocarbon group or aromatic heterocyclic group described for Z 2 in the formula (a1), and is preferably a preferable group shown for Z 2 .
- Ar When Ar represents a trivalent group, it is a trivalent aromatic hydrocarbon group or aromatic heterocyclic group which may have a substituent.
- the aromatic hydrocarbon compound from which a trivalent aromatic hydrocarbon group is derived include monocyclic compounds having one benzene ring and derivatives thereof, and two or more benzene rings such as biphenyl and terphenyl via a single bond. And a condensed polycyclic compound in which two or more benzene rings such as naphthalene, anthracene, and phenanthrene are condensed and bonded together.
- aromatic heterocyclic compound from which the aromatic heterocyclic group is derived examples include 6-membered ring compounds such as pyridine, pyrimidine and pyridazine, and 5-membered ring compounds such as pyrazole, thiophene, pyrrole and oxazole.
- it is a residue derived from a monocyclic compound, and examples thereof include a residue derived from benzene, pyridine, pyrimidine, triazine, and imidazole.
- residues include an alkyl group (preferably 6 or less carbon atoms), a cycloalkyl group (preferably a group having a 3- to 6-membered ring), an alkoxy group (preferably 6 or less carbon atoms), a halogen (preferably fluorine). May be substituted.
- Ar is represented by the following formula.
- One of the preferred compound groups of the organic sulfur compound of the general formula (b1) is that in the formula (b1), Z 5 is a trivalent residue which may be substituted with a substituent derived from benzene, and Ar is It is a divalent or trivalent residue derived from benzene and optionally having a substituent.
- Z 5 is a trivalent residue which may be substituted with a substituent derived from benzene
- Ar is It is a divalent or trivalent residue derived from benzene and optionally having a substituent.
- Examples of a more specific structure of this compound include structures represented by the following formula (b3) or (b4).
- formula (b3) a structure in which two A's in the central benzene ring are in the meta position is also preferable.
- an arbitrary hydrogen atom on the benzene ring includes an alkyl group (preferably having a carbon number of 6 or less), a cycloalkyl group, preferably a group having a 3- to 6-membered ring, an alkoxy group (preferably having a carbon number of 6 or less), a halogen (Preferably fluorine) may be substituted.
- a compound represented by the following formula (b5) or (b6) is particularly preferable.
- Ar 1 and Ar 2 preferably represent a phenyl group.
- the organic sulfur compound of the present invention can be synthesized according to the following scheme 1 or scheme 2.
- A, Z 1 to Z 4 , Ar 1 to Ar 4 , and n are as defined in formula (a1); X, X 1 to X 4 are selected from halogen, preferably Cl, Br and I; X is preferably Cl, Br and I; X 1 to X 4 preferably represents Cl or Br; P and P 1 are leaving groups selected such that the compound containing P or P 1 is a boronic acid, boronic ester, or organometallic reagent.
- Ar 1-4 collectively represents Ar 1 to Ar 4, and Z 1,4 in formula (c7) represents both Z 1 and Z 4 , and formulas (c6) and (c5)
- Ar 1,3 , Ar 2,4 and Z 1,4 represent a compound in which the previous set and the subsequent set separated by “,” represent compounds.
- the reaction involving elimination of P or P 1 is preferably a catalytic coupling reaction (eg, Suzuki coupling reaction, Negishi coupling reaction, etc.). Therefore, appropriate P or P 1 is selected according to the coupling reaction.
- a catalytic coupling reaction eg, Suzuki coupling reaction, Negishi coupling reaction, etc.
- P and P 1 are, for example, a dihydroxyboryl group ⁇ —B (OH) 2 ⁇ , or —B (OR 1 ) (OR 2 ) Yes, where R 1 and R 2 represent an alkyl group, or R 1 and R 2 together represent an alkylene group.
- the organometallic reagent include a Grignard reagent, an organozinc reagent, an organotin reagent, and an organolithium reagent.
- P and P 1 are, for example, leaving groups in Grignard reagents such as —MgCl, —MgBr, —MgI; leaving groups in organozinc reagents such as —ZnCl, —ZnBr, —ZnCl; and —Sn (R 1 ) 3 (R 1 is as defined above) and the like, and a leaving group in an organolithium reagent;
- P and P 1 are preferably a dihydroxyboryl group ⁇ —B (OH) 2 ⁇ or —B (OR 1 ) (OR 2 ), wherein R 1 and R 2 represent an alkyl group, Is a linear or branched alkyl group having 12 or less carbon atoms. Alternatively, R 1 and R 2 may together form an alkylene group, preferably an alkylene group that may have a branch having 12 or less carbon atoms. An example is 4,4,5,5-tetramethyl-2,3-dioxaboryl group.
- the production method of the present invention is a method of synthesizing an organic sulfur compound represented by the general formula (a1) by reacting the compound represented by the general formula (c1) with a compound represented by Ar 1 -4 -P. About.
- the different production method of the present invention relates to a method of synthesizing the general formula (a1) by reacting the compound represented by the general formula (c4) with the compound represented by the general formula (c5).
- A, Ar 1 , Ar 2 , Ar 3 , Ar 4 and n are as defined above, and Ar is any one of Ar 1 , Ar 2 , Ar 3 and Ar 4 .
- P and X represent the meanings defined for Schemes 1 and 2, and each P and X may be the same or different. Any hydrogen atom on the benzene ring appearing here may be substituted with an alkyl group, a cycloalkyl group or an alkoxy group.
- A is -S (O) - or -S (O) 2 - in the case of, -S (O) - or -S (O) 2 - may be used as a starting material a compound having the Alternatively, a compound having a thiol group is used as a starting material, and a thioether group (—S—) is converted to a sulfinyl group (—SO—) or sulfonyl group (—S (O) 2 ) using an appropriate oxidizing agent during the production. -) May be converted.
- Examples of the method for oxidizing the thioether group (—S—) include oxygen, hydrogen peroxide (may be an aqueous solution), organic peroxides such as ketone peroxide, m-chloroperbenzoic acid, oxone (registered trademark; potassium ion)
- oxygen hydrogen peroxide
- organic peroxides such as ketone peroxide, m-chloroperbenzoic acid, oxone (registered trademark; potassium ion)
- an oxidation method using hydrogen persulfate ion, or a double salt composed of sulfate ion and hydrogen sulfate ion is employed.
- A, Z 5 , Ar, Ar 1 , Ar 2 , and m are as defined in formula (b1); X, X 1 and X 2 are selected from halogen, preferably Cl, Br and I, wherein m Xs may be the same or different from each other, X is preferably Br or I; X 1 and X 2 are preferably Cl or Br, more preferably Cl.
- P is a leaving group selected such that the compound containing P is a boronic acid, boronic ester or organometallic reagent.
- Compounds containing P and reactions involving elimination of P are as described for Schemes 1 and 2.
- the compound represented by the general formula (d1) and the compound represented by Ar 1 -P are reacted to synthesize the organic sulfur compound represented by the general formula (b1). Regarding the method.
- A is -S (O) - or -S (O) 2 - in the case of, -S (O) - or -S (O) 2 - may be used as a starting material a compound having the Alternatively, a compound having a thiol group is used as a starting material, and a thioether group (—S—) is converted to a sulfinyl group (—SO—) or a sulfonyl group (—S (O) 2 —) using an appropriate oxidizing agent during the production. May be converted to
- the method as described above can be adopted as a method for oxidizing the thioether group (—S—).
- Organic electroluminescence element of the present invention will be described.
- known materials can be used except that the organic sulfur compound of the present invention is used in a predetermined layer.
- the organic EL element is preferably an organic EL element having a single-layer or multi-layer organic compound layer between a pair of electrodes, and includes the compound of the present invention in at least one of the organic compound thin layers.
- the organic compound layer is a buffer layer, a hole injection layer, a hole transport layer, a light emitting layer, a hole blocking layer, or an electron transport layer.
- a single layer type organic EL element has a light emitting layer between an anode and a cathode.
- the light-emitting layer contains a light-emitting material, and further includes a material used for an organic compound layer for transporting holes injected from the anode or electrons injected from the cathode to the light-emitting material, for example, a hole transport material or an electron transport material. You may contain.
- Examples of multilayer organic EL devices include (anode / buffer layer / hole transport layer / light emitting layer / hole blocking layer / electron transport layer / cathode) and (anode / buffer layer / hole transport layer / light emitting layer / electron transport).
- each of the buffer layer, the hole transport layer, the electron transport layer, and the light emitting layer may have a single layer structure or a multilayer structure.
- each of the hole transport layer and the electron transport layer can be provided separately with an injection function layer (hole injection layer and electron injection layer) and a transport function layer (hole transport layer and electron transport layer). .
- the constituent elements of the organic EL element of the present invention will be described in detail by taking as an example the element structure of (anode / buffer layer / hole transport layer / light emitting layer / hole blocking layer / electron transport layer / cathode).
- the compound of the present invention may be contained in any layer, but is preferably contained in the light emitting layer, the hole blocking layer and the electron transporting layer.
- any material used for the light emitting layer of the organic layer can be selected from known light emitting materials.
- a light emitting material for example, anthracene, naphthalene, pyrene, tetracene, coronene, perylene, phthaloperylene, naphthaloperylene, diphenylbutadiene, tetraphenylbutadiene, coumarin, oxadiazole, bisbenzoxazoline, bisstyryl, cyclopentadiene, quinoline metal complex, tris (8-hydroxy Quinolinato) aluminum complex, tris (4-methyl-8-quinolinato) aluminum complex, tris (5-phenyl-8-quinolinato) aluminum complex, aminoquinoline metal complex, benzoquinoline metal complex, tri- (p-terphenyl) Fluorescent materials such as -4-yl) amine, 1-aryl-2,5-di (2-thien
- the light emitting layer can also be formed from the above light emitting material and a host material.
- a host material include, for example, 4,4′-di (N-carbazolyl) -1,1′-biphenyl (CBP), 1,4-di (N-carbazolyl) benzene, 2,2′-di [4 "-(N-carbazolyl) phenyl] -1,1'-biphenyl (4CzPBP), diphenyldi (o-tolyl) silane, p-bis (triphenylsilyl) benzene, 9,10-bis- [1,1, 3 ′, 1 ′′] terphenyl-5′-yl-anthracene and the like, but are not limited thereto.
- the light emitting material is preferably 0.005 to 40% by weight with respect to the host material.
- organic sulfur compound of the present invention can be used alone or in combination with another host material in the light emitting layer.
- hole blocking material examples include 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline and bis (2-methyl-). Examples include, but are not limited to, 8-quinolinolato) (p-phenylphenolato) aluminum, bis (2-methyl-8-quinolinolato) (triphenylsilanolato) aluminum, and the like.
- the organic sulfur compound of the present invention can be used as a hole blocking material alone or in combination with other hole blocking materials.
- electron transport materials Materials used for the electron transport layer (hereinafter referred to as electron transport materials) are known materials such as fluorene, phenanthroline, bathophenanthroline, bathocuproine, anthraquinodimethane, diphenoquinone, oxazole, oxadiazole, triazole, imidazole. , Anthraquinodimethane, 4,4′-N, N′-dicarbazole biphenyl (CBP) and the like, compounds thereof, metal complex compounds or nitrogen-containing five-membered ring derivatives.
- fluorene phenanthroline
- bathophenanthroline bathophenanthroline
- bathocuproine anthraquinodimethane
- diphenoquinone diphenoquinone
- oxazole oxadiazole
- triazole imidazole.
- Anthraquinodimethane 4,4′-N, N′-dicarbazole biphenyl (
- the metal complex compound examples include 8-hydroxyquinolinate lithium, tris (8-hydroxyquinolinato) aluminum, tri (2-methyl-8-hydroxyquinolinato) aluminum, tris (8-hydroxyquinato).
- Norinato) gallium bis (10-hydroxybenzo [h] quinolinato) beryllium, bis (10-hydroxybenzo [h] quinolinato) zinc, bis (2-methyl-8-quinolinato) (o-cresolate) gallium, bis ( 2-methyl-8-quinolinato) (1-naphtholato) aluminum, bis (2-methyl-8-quinolinato) -4-phenylphenolate, and the like, but are not limited thereto.
- the nitrogen-containing five-membered ring derivative is preferably an oxazole, thiazole, oxadiazole, thiadiazole or triazole derivative.
- the organic sulfur compound of the present invention can be used as an electron transport material alone or in combination with other electron transport materials.
- hole transport material the material used for the hole transport layer
- TPD N, N′-bis (3-methylphenyl)-(1,1′-biphenyl) -4,4′diamine
- TPD 4,4′-bis [N- (naphthyl) -N-phenyl-amino ]
- Aromatic diamine compounds such as biphenyl ( ⁇ -NPD), stilbene derivatives, pyrazoline derivatives, polyarylalkanes, 4,4 ′, 4 ′′ -tris (N- (3-methylphenyl) N-phenylamino) triphenylamine
- Polymer materials such as (m-MTDATA), 2,2 ′, 7,7′-tetrakis- (N, N-diphenylamino) -9,9′-spirobifluorene, and polyvinylcarbazole. It is not limited to.
- a buffer layer can be provided in the organic EL element to improve the hole injection property, but a material used for the buffer layer can be selected from known materials. More preferably, the hole transport material doped with 1 to 30% by weight of molybdenum oxide is used, but is not limited thereto.
- Examples of the conductive material used for the anode include those having a work function larger than about 4 eV, such as carbon atom, aluminum, vanadium, iron, cobalt, nickel, tungsten, silver, gold, platinum, palladium and alloys thereof, ITO (Substance in which 5 to 10% of tin oxide is added to indium oxide) Tin oxide used for substrates, NESA substrates, metal oxides such as indium oxide, and organic conductive resins such as polythiophene and polypyrrole can be used. However, it is desirable to use a material whose work function is 0.1 eV or more larger than that of the conductive material used for the cathode of the element.
- the conductive material used for the cathode a material having a work function smaller than about 4 eV, for example, magnesium, calcium, tin, lead, titanium, yttrium, lithium, ruthenium, manganese, aluminum, or an alloy thereof is used.
- examples of the alloy include magnesium / silver, magnesium / indium, and lithium / aluminum.
- the ratio of the alloy is not particularly limited and is controlled by the temperature of the vapor deposition source, the atmosphere, the degree of vacuum, and the like.
- the work function of these conductive materials used for the cathode is desirably smaller than the work function of the conductive material used for the anode of the element by 0.1 eV or more.
- a metal oxide layer can be provided between the light emitting layer and the electrode in order to improve the electron injection property.
- the electron transport material may be doped with a metal oxide.
- metal oxide used examples include alkali metal fluorides such as LiF; alkaline earth metal fluorides such as BaF 2 and SrF 2 ; alkali metal oxides such as Li 2 O; alkaline earth metals such as RaO and SrO. Oxides are used.
- the anode and the cathode may be formed with a layer structure of two or more layers if necessary.
- the organic EL device of the present invention it is desirable that at least one surface is transparent in the light emission wavelength region of the device.
- the substrate is also preferably transparent.
- the transparent electrode is obtained by using the above-described conductive material and setting so as to ensure a predetermined translucency by a method such as vapor deposition or sputtering.
- the light transmission surface electrode has a light transmittance of 10% or more.
- the substrate is not particularly limited as long as it has mechanical and thermal strength and has transparency, but a glass substrate or a transparent resin film is used.
- the transparent resin film examples include polyethylene, ethylene-vinyl acetate copolymer, ethylene-vinyl alcohol copolymer, polypropylene, polystyrene, polymethyl methacrylate, polyvinyl chloride, polyvinyl alcohol, polyvinyl butyral, nylon, and polyether.
- Ether ketone polysulfone, polyether sulfone, tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer, polyvinyl fluoride, tetrafluoroethylene-ethylene copolymer, tetrafluoroethylene-hexafluoropropylene copolymer, polychlorotrifluoro Ethylene, polyvinylidene fluoride, polyester, polycarbonate, polyurethane, polyimide, polyetherimide, polyimide, polypropylene Etc. The.
- a protective layer may be provided on the surface of the device or the entire device may be protected with silicon oil, resin or the like in order to improve stability against temperature, humidity, atmosphere and the like.
- each layer of the organic EL element can be formed by applying either a dry film formation method such as vacuum deposition, sputtering, plasma, or ion plating, or a wet film formation method such as spin coating, dipping, or flow coating. it can.
- the film thickness is not particularly limited, but is preferably 0.1 nm to 10 ⁇ m, more preferably 0.5 nm to 0.2 ⁇ m.
- the material can be dissolved or dispersed in a solvent such as ethanol, chloroform, tetrahydrofuran, or dioxane on each layer to prepare a thin film.
- a solvent such as ethanol, chloroform, tetrahydrofuran, or dioxane
- Bis (4- (m-terphenyl-5'-yl) phenyl) sulfone is a novel compound represented by the following physical property values.
- a 300 ml glass four-necked flask equipped with a thermometer, a reflux condenser and a stirrer was charged with 1.50 g (4.20 mmol) of bis (3,5-dichlorophenyl) sulfone and 2.67 g (21.9 mmol) of phenylboronic acid. ), 21.8 ml (29.4 mmol) of a 1.35 mol / l aqueous potassium phosphate solution and 125 ml of 1,4-dioxane were added, and nitrogen was bubbled through the mixed solution for 1 hour.
- Bis (m-terphenyl-5'-yl) sulfone is a novel compound represented by the following physical property values.
- reaction solution was cooled to room temperature, and water and toluene were added for liquid separation, the aqueous layer was extracted with toluene, the organic layers were combined, washed with water, and dried over anhydrous magnesium sulfate. After filtration, the filtrate was concentrated under reduced pressure, and the resulting concentrate was purified by silica gel column chromatography (developing solvent: hexane) to obtain 16.0 g of 3,5-diphenylchlorobenzene as a white solid (isolated product). Rate; 82%).
- reaction solution was cooled to room temperature, water and hexane: ethyl acetate (1: 1) were added and separated, and the resulting organic layer was dried over anhydrous magnesium sulfate. After filtration, the filtrate was concentrated under reduced pressure, and the resulting concentrate was recrystallized and purified by simple silica gel column chromatography (developing solvent; hexane) to give bis (3,5-dichlorophenyl) sulfide 25. 4 g was obtained (isolation yield; 95%).
- reaction solution is cooled to room temperature, and water and hexane: ethyl acetate (1: 1) are added for liquid separation, and the obtained organic layer is washed with saturated brine and dried over anhydrous magnesium sulfate. It was. After filtration, the filtrate was concentrated under reduced pressure, and the resulting concentrate was purified by silica gel column chromatography (developing solvent; hexane) to give 3,5-dichlorophenyl-3 ′, 5′-dibromophenyl sulfide as a white solid. 20.0 g was obtained (isolation yield; 35%).
- the reaction was carried out at room temperature for a whole day and night. After completion of the reaction, the reaction solution was washed with saturated aqueous sodium hydrogen carbonate, and the resulting organic layer was dried over anhydrous magnesium sulfate. After filtration, the filtrate was concentrated under reduced pressure, and the resulting concentrate was purified by column chromatography (developing solvent; hexane) to give 3,5-dichlorophenyl-3 ′, 5′-dibromophenylsulfone 10 as a white solid. 0.0 g was obtained (isolation yield; 62%).
- Bis (3,5-di-m-tolylphenyl) sulfone is a novel compound represented by the following physical property values.
- the obtained solid was purified by recrystallization (1,4-dioxane-methanol) to obtain 3.30 g of bis (3,5-di-p-tolylphenyl) sulfone as a white solid (isolation yield; 81 %).
- Bis (3,5-di-p-tolylphenyl) sulfone is a novel compound represented by the following physical property values.
- Bis (3,5-di-o-tolylphenyl) sulfone is a novel compound represented by the following physical property values.
- the obtained solid was purified by silica gel chromatography (developing solvent: chloroform-methanol) to obtain 800 mg of bis (3,5-di-3-pyridylphenyl) sulfone as a white solid (isolated yield; 32%). .
- Bis (3,5-di-3-pyridylphenyl) sulfone is a novel compound represented by the following physical property values.
- the obtained solid was purified by silica gel chromatography (developing solvent: chloroform-methanol) to obtain 800 mg of bis (3,5-di-3-pyridylphenyl) sulfone as a white solid (isolated yield; 32%). .
- Bis (3,5-di-3-pyridylphenyl) sulfone is a novel compound represented by the following physical property values.
- a 100 ml glass four-necked flask equipped with a stirrer, a thermometer and a reflux condenser was charged with 2.36 g (10.0 mmol) of 1,3-dibromobenzene, 5.52 g (40.0 mmol) of potassium carbonate and N, 50.0 ml of N-dimethylimidazolidinone was added. Nitrogen was then bubbled for 1 hour with stirring. Next, 3.76 g (21.0 mmol) of cuprous iodide and 3.76 g (21.0 mmol) of 3,5-dichlorobenzenethiol were added and reacted at an internal temperature of 160 to 165 ° C. for 24 hours.
- a 100 ml glass four-necked flask equipped with a stirrer, a thermometer and a reflux condenser was charged with 2.83 g (10.0 mmol) of 4-bromoiodobenzene, 5.52 g (40.0 mmol) of potassium carbonate and N, N -50.0 ml of dimethylimidazolidinone was added and nitrogen was bubbled for 1 hour with stirring.
- 3.81 g (20.0 mmol) of cuprous iodide and 3.76 g (21.0 mmol) of 3,5-dichlorobenzenethiol were added and reacted at an internal temperature of 160 to 165 ° C. for 24 hours.
- an organic EL device including a transparent substrate 1, an anode 2, a buffer layer 3, a hole transport layer 4, a light emitting layer 5, a hole blocking layer 6, an electron transport layer 7 and a cathode 8 from the substrate side.
- a transparent substrate 1 As shown in FIG. 1, an organic EL device including a transparent substrate 1, an anode 2, a buffer layer 3, a hole transport layer 4, a light emitting layer 5, a hole blocking layer 6, an electron transport layer 7 and a cathode 8 from the substrate side. was prepared by the following method.
- BTPS bis (m-terphenyl-5′-yl) sulfone; the one synthesized in Example 2 was used.
- BTPPS bis (4- (m-terphenyl-5′-yl) phenyl) sulfone; the one synthesized in Example 1 was used.
- a glass substrate (transparent substrate 1) on which a patterned transparent conductive film (ITO) (anode 2) is formed with a film thickness of 110 nm is subjected to ultrasonic cleaning with pure water and a surfactant, flowing water cleaning with pure water, and pure water. Washing was performed in the order of ultrasonic cleaning with a 1: 1 mixed solution of isopropyl alcohol and boiling cleaning with isopropyl alcohol. The substrate was slowly pulled up from the boiling isopropyl alcohol, dried in isopropyl alcohol vapor, and finally subjected to ultraviolet ozone cleaning.
- ITO transparent conductive film
- This substrate is used as an anode, placed in a vacuum chamber, evacuated to 1 ⁇ 10 ⁇ 6 Torr, and in this chamber, each molybdenum board filled with a vapor deposition material and a predetermined pattern are formed.
- the buffer layer 3 the hole transport layer 4
- the light emitting layer 5 the hole blocking layer 6, and the electron transport are sequentially installed.
- Layer 7 was deposited.
- NS21 manufactured by Nippon Steel Chemical Co., Ltd.
- MoO 3 molybdenum trioxide
- the NS 21 was formed with a film thickness of 5 nm to form the hole transport layer 4.
- the light emitting layer 5 is NS21: EY52 (e-Ray so as to become a white element.
- e-Ray Optoelectronics Technology
- e-Ray 98.7: 1.3 with a film thickness of 20 nm
- EB43 e-Ray
- EB52 e-Ray
- the film was formed with a film thickness of 30 nm.
- bis (2-methyl-8-quinolinolato) (p-phenylphenolato) aluminum (BAlq) was formed to a thickness of 5 nm to form a hole blocking layer 6.
- the laminated structure thus formed was combined with another glass substrate and sealed with a UV curable resin to complete the device.
- Element Production Example 3 In Element Production Example 1, an element was produced in the same manner as in Element Production Example 1 except that BTPS was used instead of BTPS.
- an organic EL device including the transparent substrate 11, the anode 12, the buffer layer 13, the hole transport layer 14, the light emitting layer 15, the electron transport layer 16, and the cathode 17 from the substrate side is referred to as Device Manufacturing Example 1. It produced similarly.
- the layer structure is as follows.
- Anode 12 ITO (110 nm)
- Hole transport layer 14 3DTAPBP (20 nm)
- Light emitting layer 15 4-acetylphenylethynyl [1,3-bis (2,6-diisopropylphenyl) imidazol-2-ylidene] gold: BTPS (10 nm, 80:20)
- Electron transport layer 16 BmPyPB (50 nm) / Liq (0.5 nm)
- Cathode 17 Al (100 nm)
- 3DTAPBP 4-acetylphenylethynyl [1,3-bis (2,6-diisopropylphenyl) imidazol-2-ylidene] gold and BmPyPB are disclosed in JP-A-2005-320277, WO-2005-80515, and JP-A-2008-, respectively. It is a compound represented by the following structural formula described in 127326.
- the layer structure is as follows.
- Anode 12 ITO (110 nm), Buffer layer 13: NS21: MoO 3 (20 nm, 80:20), Hole transport layer 14: 3DTAPBP (20 nm),
- Light emitting layer 15 FIrpic: BTPS (4.5 nm, 20:80) / PQ2Ir (dpm): BTPS (1.0 nm, 5:95) / FIrpic: BTPS (4.5 nm, 80:20),
- Electron transport layer 16 BmPyPB (25 nm) / KLET03 (47 nm) / Liq (1.0 nm),
- Cathode 17 Al (100 nm)
- FIrpic and PQ2Ir (dpm) are dopants represented by the following structural formula
- KLET03 is an electron transport material (manufactured by Chemipro Kasei Co., Ltd.).
- the layer structure is as follows.
- Anode 12 ITO (110 nm)
- Buffer layer 13 NS21: MoO 3 (20 nm, 80:20)
- Hole transport layer 14 3DTAPBP (20 nm)
- Light emitting layer 15 FIrpic: BTPPS (4.5 nm, 20:80) / PQ2Ir (dpm): BTPPS (1.0 nm, 5:95) / FIrpic: BTPPS (4.5 nm, 80:20)
- Electron transport layer 16 BmPyPB (25 nm) / KLET03 (47 nm) / Liq (1.0 nm)
- Cathode 17 Al (100 nm)
- the organic EL elements prepared in the element manufacturing examples 1 to 7 were connected to a power source (“2400” manufactured by KETELEY) and used with a multi-channel analyzer (“CS-2000” manufactured by Konica Minolta, Inc.). The external quantum efficiency, luminous efficiency, and energy conversion efficiency were measured. The results are shown in Tables 1 and 2.
- the organic sulfur compound of the present invention is useful as a material for an organic EL device.
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Abstract
Description
Aは、-S-、-S(O)-または-S(O)2-を表し、
Z1およびZ4は、互いに独立して、置換基を有していてもよい3価の芳香族炭化水素基またはカルバゾリル基を除く芳香族複素環基を表し、
Z2およびZ3は、互いに独立して、置換基を有していてもよい2価の芳香族炭化水素基または芳香族複素環基を表し、
Ar1、Ar2、Ar3およびAr4は、互いに独立して、置換基を有していてもよい芳香族炭化水素基またはカルバゾリル基を除く芳香族複素環基を表し、および
nは、0または1であり、2つのnは同一でも異なっていてもよい。)
または、
一般式(b1):
X、X1~X4はハロゲン、好ましくはCl、BrおよびIから選ばれ、Xは好ましくはCl、BrおよびIであり、X1~X4は好ましくはClまたはBrを示し、
PおよびP1は、PまたはP1を含む化合物がボロン酸、ボロン酸エステル、または有機金属試薬であるように選択される脱離性の基である。
(ii)出発原料の式(c3)においてAが-S-である化合物を選択して式(c1)(A=-S-)の化合物を合成し、ここで-S-を-S(O)2-に変換して式(c1)(A=-S(O)2-)の化合物を合成し、次に経路に従って式(a1)(A=-S(O)2-)を合成する;または
(iii)出発原料の式(c3)においてAが-S-である化合物を選択して式(c1)(A=-S-)の化合物を合成し、次いで式(a1)(A=-S-)の化合物を合成し、ここで-S-を-S(O)2-に変換して式(a1)(A=-S(O)2-)の化合物を合成する。
X、X1、X2はハロゲン、好ましくはCl、BrおよびIから選ばれ、ここで、m個のXは、同一でも、互いに異なっていてもよく、Xは好ましくはBrまたはIであり、X1およびX2は、好ましくはClまたはBrであり、より好ましくはClである。
(ii)出発原料の式(d3)においてAが-S-である化合物を選択して式(d1)(A=-S-)の化合物を合成し、ここで-S-を-S(O)2-に変換して式(d1)(A=-S(O)2-)の化合物を合成し、次に経路に従って式(b1)(A=-S(O)2-)を合成する;または
(iii)出発原料の式(d3)においてAが-S-である化合物を選択して式(d1)(A=-S-)の化合物を合成し、次いで式(b1)(A=-S-)の化合物を合成し、ここで-S-を-S(O)2-に変換して式(b1)(A=-S(O)2-)の化合物を合成する。
次に本発明の有機エレクトロルミネッセンス素子について説明する。本発明の有機EL素子は、本発明の有機硫黄化合物が、所定の層において使用される以外、公知の材料を使用することができる。
--ビス(4-(m-ターフェニル-5’-イル)フェニル)スルホンの合成--
標題化合物を、次のスキームに従って合成した。
1H-NMR(CDCl3,δ(ppm));7.34~7.56(12H,m)、7.60~7.92(18H,m)、8.04~8.14(4H,m)
--(ビス(m-ターフェニル-5’-イル)スルホンの合成--
標題化合物を、次のスキームに従って合成した。
1H-NMR(CDCl3,δ(ppm));7.36~7.53(12H,m)、7.58~7.70(8H,m)、7.93~8.00(2H,m)、8.10~8.23(4H,m)
(3,5-ジフェニルクロロベンゼンの合成)
標題化合物を、次のスキームに従って合成した。
(2-(m-ターフェニル-5’-イル)-4,4,5,5-テトラメチル-1,3,2-ジオキサボランの合成)
標題化合物を次のスキームに従って合成した。
(ビス(3,5-ジクロロフェニル)スルフィドの合成)
標題化合物を、次のスキームに従って合成した。
(ビス(3,5-ジクロロフェニル)スルホンの合成)
次のスキームに従って標題化合物を合成した。
EI-MS;354(M)、356(M+2)、358(M+4)
(3,5-ジクロロフェニル-3’,5’-ジブロモフェニルスルフィドの合成)
標題化合物を、次のスキームに従って合成した。
(3,5-ジクロロフェニル-3’,5’-ジブロモフェニルスルホンの合成)
標題化合物を次のスキームに従って合成した。
(ビス(3,5-ジ-m-トリルフェニル)スルホンの合成)
標題化合物を、次のスキームに従って合成した。
1H-NMR(CDCl3,δ(ppm));2.39(12H,s)、7.12~7.50(16H,m)、7.88~8.00(2H,m)、8.08~8.20(4H,m)
(ビス(3,5-ジ-p-トリルフェニル)スルホン)の合成)
標題化合物を、次のスキームに従って合成した。
1H-NMR(CDCl3,δ(ppm));2.39(12H,s)、7.20~7.34(8H,m)、7.46~7.58(8H,m)、7.86~7.98(2H,m)、8.08~8.20(4H,m)
(ビス(3,5-ジ-o-トリルフェニル)スルホン)の合成)
標題化合物を、次のスキームに従って合成した。
1H-NMR(CDCl3,δ(ppm));2.30(12H,s)、7.20~7.38(16H,m)、7.46~7.58(2H,m)、7.85~7.98(4H,m)
(ビス(3,5-ジ-3-ピリジルフェニル)スルホン)の合成)
標題化合物を次のスキームに従って合成した。
1H-NMR(CDCl3,δ(ppm));7.32~7.50(4H,m)、7.84~8.02(6H,m)、8.14~8.28(4H,m)、8.58~8.72(4H,m)、8.76~8.92(4H,m)
(ビス(3,5-ジ-4-ピリジルフェニル)スルホン)の合成)
標題化合物を次のスキームに従って合成した。
1H-NMR(CDCl3,δ(ppm));7.45~7.60(8H,m)、8.00~8.10(2H,m)、8.24~8.34(4H,m)、8.66~8.82(8H,m)
1,3-ビス(3’,5’-ジクロロフェニルチオ)ベンゼンの合成
1,4-ビス(3’,5’-ジクロロフェニルチオ)ベンゼンの合成
1,3-ビス(3’,5’-ジクロロフェニルスルホニル)ベンゼンの合成
1,3-ビス(3’,5’-ジフェニルフェニルスルホニル)ベンゼンの合成
1H-NMR(CDCl3、δ(ppm));8.64(1H,s)、8.25~7.90(8H,m)、7.75~7.20(21H,m)
1,4-ビス(3’,5’-ジクロロフェニルスルホニル)ベンゼンの合成
1,4-ビス(3’,5’-ジフェニルフェニルスルホニル)ベンゼンの合成
1H-NMR(CDCl3、δ(ppm));8.18~8.02(8H,m)、8.00~7.95(2H,m)、7.68~7.35(20H,m)
図1に示すように、基板側から、透明基板1、陽極2、バッファ層3、ホール輸送層4、発光層5、ホール阻止層6、電子輸送層7および陰極8の各層を備える有機EL素子を以下の方法により作製した。
BTPS:ビス(m-ターフェニル-5’-イル)スルホン;実施例2で合成したものを使用した。
BTPPS:ビス(4-(m-ターフェニル-5’-イル)フェニル)スルホン;実施例1で合成したものを使用した。
Optoelectronics Technology社(以下、e-Ray社という)製)=98.7:1.3を膜厚20nmで成膜し、さらにEB43(e-Ray社製):EB52(e-Ray社製)を膜厚30nmで成膜して形成した。発光層5の上に、ビス(2-メチル-8-キノリノラート)(p-フェニルフェノラート)アルミニウム(BAlq)を膜厚5nmで成膜し、ホール阻止層6を形成した。
陽極2: ITO(110nm)、
バッファ層3: NS21:MoO3(10nm、80:20)/NS21:MoO3=(20nm、90:10)、
ホール輸送層4: NS21(5nm)、
発光層5: NS21:EY52(20nm、98.7:1.3)/EB43:EB52(30nm、98.8:1.2)、
ホール阻止層6: BAlq(5nm)、
電子輸送層7: BTPS(17nm)/BTPS:Liq(10nm、74:26)、
陰極8: Al(100nm)
である。
素子製造1において、ホール阻止層のBAlqをBTPSとし、電子輸送層中で使用したBTPSに代えて1,4-ジ(1,10-フェナントロリン-2-イル)ベンゼン(DPB)を使用した以外は素子製造例1と同様に素子を作製した。
陽極2: ITO(110nm)、
バッファ層3: NS21:MoO3(10nm、80:20)/NS21:MoO3=(20nm、90:10)、
ホール輸送層4: NS21(5nm)、
発光層5: NS21:EY52(20nm、98.7:1.3)/EB43:EB52(30nm、98.8:1.2)、
ホール阻止層6: BTPS(5nm)、
電子輸送層7: DPB(14nm)/DPB:Liq(10nm、74:26)、
陰極8: Al(100nm)
である。
素子製造例1において、BTPSの代わりにBTPPSを使用した以外は素子製造例1と同様に素子を作成した。
陽極2: ITO(110nm)、
バッファ層3: NS21:MoO3(10nm、80:20)/NS21:MoO3=(20nm、90:10)、
ホール輸送層4: NS21(5nm)、
発光層5: NS21:EY52(20nm、98.7:1.3)/EB43:EB52(30nm、98.8:1.2)、
ホール阻止層6: BAlq(5nm)、
電子輸送層7: BTPPS(17nm)/BTPPS:Liq(10nm、74:26)、
陰極8: Al(100nm)
素子製造例2において、BTPSをBTPPSにした以外は素子製造例2と同様にして素子を作成した。
陽極2: ITO(110nm)、
バッファ層3: NS21:MoO3(10nm、80:20)/NS21:MoO3=(20nm、90:10)、
ホール輸送層4: NS21(5nm)、
発光層5: NS21:EY52(20nm、98.7:1.3)/EB43:EB52(30nm、98.8:1.2)、
ホール阻止層6: BTPPS(5nm)、
電子輸送層7: DPB(14nm)/DPB:Liq(10nm、74:26)、
陰極8: Al(100nm)
図2に示すように、基板側から透明基板11、陽極12、バッファ層13、ホール輸送層14、発光層15、電子輸送層16および陰極17の各層を備える有機EL素子を、素子製造例1と同様にして作製した。
陽極12:ITO(110nm)、
バッファ層13:NS21:MoO3(10nm、80:20)/NS21:MoO3=(20nm、90:10)、
ホール輸送層14:3DTAPBP(20nm)、
発光層15:4-アセチルフェニルエチニル[1,3-ビス(2,6-ジイソプロピルフェニル)イミダゾール-2-イリデン]金:BTPS(10nm、80:20)、
電子輸送層16:BmPyPB(50nm)/Liq(0.5nm)、
陰極17:Al(100nm)
図2に示す各層を備える有機EL素子を、素子製造例1と同様にして作製した。
陽極12: ITO(110nm)、
バッファ層13: NS21:MoO3(20nm、80:20)、
ホール輸送層14: 3DTAPBP(20nm)、
発光層15: FIrpic:BTPS(4.5nm、20:80)/PQ2Ir(dpm):BTPS(1.0nm、5:95)/FIrpic:BTPS(4.5nm、80:20)、
電子輸送層16: BmPyPB(25nm)/KLET03(47nm)/Liq(1.0nm)、
陰極17: Al(100nm)
素子製造例6においてBTPSをBTPPSに変えた以外は同様にして、下記のように簡略化して示した層構成の素子を作成した。
陽極12: ITO(110nm)、
バッファ層13: NS21:MoO3(20nm、80:20)、
ホール輸送層14: 3DTAPBP(20nm)、
発光層15: FIrpic:BTPPS(4.5nm、20:80)/PQ2Ir(dpm):BTPPS(1.0nm、5:95)/FIrpic:BTPPS(4.5nm、80:20)、
電子輸送層16: BmPyPB(25nm)/KLET03(47nm)/Liq(1.0nm)、
陰極17: Al(100nm)
2 陽極
3 バッファ層
4 ホール輸送層
5 発光層
6 ホール阻止層
7 電子輸送層
8 陰極
11 透明基板
12 陽極
13 バッファ層
14 ホール輸送層
15 発光層
16 電子輸送層
17 陰極
Claims (11)
- 一般式(a1):
(式中、
Aは、-S-、-S(O)-または-S(O)2-を表し、
Z1およびZ4は、互いに独立して、置換基を有していてもよい3価の芳香族炭化水素基またはカルバゾリル基を除く芳香族複素環基を表し、
Z2およびZ3は、互いに独立して、置換基を有していてもよい2価の芳香族炭化水素基または芳香族複素環基を表し、
Ar1、Ar2、Ar3およびAr4は、互いに独立して、置換基を有していてもよい芳香族炭化水素基またはカルバゾリル基を除く芳香族複素環基を表し、および
nは、0または1であり、2つのnは同一でも異なっていてもよい。)
または、
一般式(b1):
(式中、
Aは、-S-、-S(O)-または-S(O)2-を表し、
Z5は、置換基を有していてもよい3価の芳香族炭化水素基または芳香族複素環基を表し、
Arは、置換基を有していてもよいm価の芳香族炭化水素基または芳香族複素環基を表し、
Ar1およびAr2は、互いに独立して前記一般式(a1)について定義された意味を表し、
mは、2または3であり、
但し、式中にそれぞれm個存在するA、Z5、Ar1、およびAr2は、そのm個の基が互いに同一でも異なっていてもよい。)
で示される有機硫黄化合物。 - 一般式(a1):
(式中、
Aは、-S-、-S(O)-または-S(O)2-を表し、
Z1およびZ4、互いに独立して、置換基を有していてもよい3価の芳香族炭化水素基またはカルバゾリル基を除く芳香族複素環基を表し、
Z2およびZ3は、互いに独立して、置換基を有していてもよい2価の芳香族炭化水素基または芳香族複素環基を表し、
Ar1、Ar2、Ar3およびAr4は、互いに独立して、置換基を有していてもよい芳香族炭化水素基またはカルバゾリル基を除く芳香族複素環基を表し、および
nは、0または1であり、2つのnは同一でも異なっていてもよい。)
で示される化合物の製造方法であって、
一般式(c1):
(式中、
A、Z1、Z4、Z2、Z3およびnは前記一般式(a1)について定義された意味を表し、
X1、X2、X3およびX4は、互いに独立してハロゲンを表す。)
で示される化合物と、
式Ar1P、Ar2P、Ar3PおよびAr4P
(式中、Ar1、Ar2、Ar3およびAr4は、前記一般式(a1)で定義された意味を表し、Pは、Pを含む化合物がボロン酸、ボロン酸エステル、または有機金属試薬であるように選択される脱離性の基である。)
で示される化合物を反応させることを特徴とする一般式(a1)で示される化合物の製造方法。 - 一般式(a1):
(式中、
Aは、-S-、-S(O)-または-S(O)2-を表し、
Z1およびZ4、互いに独立して、置換基を有していてもよい3価の芳香族炭化水素基またはカルバゾリル基を除く芳香族複素環基を表し、
Z2およびZ3は、互いに独立して、置換基を有していてもよい2価の芳香族炭化水素基または芳香族複素環基を表し、
Ar1、Ar2、Ar3およびAr4は、互いに独立して、置換基を有していてもよい芳香族炭化水素基またはカルバゾリル基を除く芳香族複素環基を表し、および
nは、0または1であり、2つのnは同一でも異なっていてもよい。)
で示される化合物の製造方法であって、
一般式(c4):
(式中、
A、Z2、Z3およびnは前記一般式(a1)で定義された意味を示し、
Xはハロゲンを表し、2つのXは同一でも異なっていてもよい。)
で示される化合物と、
一般式(c5i)および(c5ii):
(式中、
Ar1、Ar2、Ar3、Ar4、Z1およびZ4は、前記一般式(a1)で定義された意味を表し、
Pは、Pを含む化合物がボロン酸、ボロン酸エステル、または有機金属試薬であるように選択される脱離性の基である。)
で示される化合物を反応させることを特徴とする一般式(a1)で示される化合物の製造方法。 - 一般式(b1):
(式中、
Aは、-S-、-S(O)-または-S(O)2-を表し、
Z5は、置換基を有していてもよい3価の芳香族炭化水素基または芳香族複素環基を表し、
Arは、置換基を有していてもよいm価の芳香族炭化水素基または芳香族複素環基を表し、
Ar1およびAr2は、互いに独立して、置換基を有していてもよい芳香族炭化水素基またはカルバゾリル基を除く芳香族複素環基を表し、
mは、2または3であり、
但し、式中にそれぞれm個存在するA、Z5、Ar1、およびAr2は、そのm個の基が互いに同一でも異なっていてもよい。)
で示される化合物の製造方法であって、
一般式(d1):
(式中、A、Ar、Z5およびmは前記一般式(b1)について定義された意味を表し、
X1およびX2は、互いに独立してハロゲンを表す。)
で示される化合物と、
式Ar1PおよびAr2P
(式中、Ar1およびAr2は、前記一般式(b1)で定義された意味を表し、Pは、Pを含む化合物がボロン酸、ボロン酸エステル、または有機金属試薬であるように選択される脱離性の基である。)
で示される化合物を反応させることを特徴とする一般式(b1)で示される化合物の製造方法。 - 請求項1~4のいずれかに記載の有機硫黄化合物を含有することを特徴とする有機エレクトロルミネッセンス素子。
- 電子輸送層、ホール阻止層および発光層から選ばれる少なくとも1つの層に、請求項1~4のいずれかに記載の有機硫黄化合物を含有することを特徴とする請求項8記載の有機エレクトロルミネッセンス素子。
- 発光層に4-アセチルフェニルエチニル[1,3-ビス(2,6-ジイソプロピルフェニル)イミダゾール-2-イリデン]金を含む請求項9記載の有機エレクトロルミネッセンス素子。
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| CN200980140717.3A CN102186813B (zh) | 2008-08-13 | 2009-08-13 | 有机硫化合物,有机硫化合物的制备方法,及使用有机硫化合物的有机电致发光元件 |
| EP09806749.9A EP2332907B1 (en) | 2008-08-13 | 2009-08-13 | Organic sulfur compound, process for production of the same, and organic electroluminescence element utilizing the same |
| JP2010524752A JP5550556B2 (ja) | 2008-08-13 | 2009-08-13 | 有機硫黄化合物およびその製造方法、並びにそれを用いた有機エレクトロルミネッセンス素子 |
| US13/058,504 US8597799B2 (en) | 2008-08-13 | 2009-08-13 | Organosulfur compound, process for producing the same, and organic electroluminescence element using the same |
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| USRE47000E1 (en) | 2010-05-24 | 2018-08-21 | Canon Kabushiki Kaisha | Optical element compound, optical material, and optical element |
| USRE47556E1 (en) | 2010-05-24 | 2019-08-06 | Canon Kabushiki Kaisha | Optical element compound, optical material, and optical element |
| JP2013538436A (ja) * | 2010-06-18 | 2013-10-10 | ビーエーエスエフ ソシエタス・ヨーロピア | ピリジン化合物と8−ヒドロキシキノリノラトアルカリ土類金属又はアルカリ金属錯体の層を含む有機電子デバイス |
| WO2012032913A1 (ja) * | 2010-09-09 | 2012-03-15 | 日本精機株式会社 | 有機el素子 |
| JP2012184223A (ja) * | 2011-02-14 | 2012-09-27 | Asahi Kasei E-Materials Corp | 多環式芳香族化合物の製造方法 |
| JP2014220450A (ja) * | 2013-05-10 | 2014-11-20 | 国立大学法人山形大学 | 有機エレクトロルミネッセンス素子 |
Also Published As
| Publication number | Publication date |
|---|---|
| US20110140044A1 (en) | 2011-06-16 |
| US8597799B2 (en) | 2013-12-03 |
| CN102186813B (zh) | 2014-12-24 |
| EP2332907A4 (en) | 2011-11-02 |
| TW201026655A (en) | 2010-07-16 |
| JP5550556B2 (ja) | 2014-07-16 |
| EP2332907B1 (en) | 2015-07-01 |
| CN102186813A (zh) | 2011-09-14 |
| KR20110043744A (ko) | 2011-04-27 |
| JPWO2010018858A1 (ja) | 2012-01-26 |
| TWI458701B (zh) | 2014-11-01 |
| EP2332907A1 (en) | 2011-06-15 |
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