WO2011155169A1 - アクリダン環構造を有する化合物および有機エレクトロルミネッセンス素子 - Google Patents
アクリダン環構造を有する化合物および有機エレクトロルミネッセンス素子 Download PDFInfo
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- WO2011155169A1 WO2011155169A1 PCT/JP2011/003159 JP2011003159W WO2011155169A1 WO 2011155169 A1 WO2011155169 A1 WO 2011155169A1 JP 2011003159 W JP2011003159 W JP 2011003159W WO 2011155169 A1 WO2011155169 A1 WO 2011155169A1
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- MHZQALHYBOODHJ-UHFFFAOYSA-N CC(C)(c1c2)c(cc(cc3)-c(cc4)cc(cc5)c4cc5N(c4ccccc4)c4ccccc4)c3N(c3ccccc3)c1ccc2-c1ccccc1 Chemical compound CC(C)(c1c2)c(cc(cc3)-c(cc4)cc(cc5)c4cc5N(c4ccccc4)c4ccccc4)c3N(c3ccccc3)c1ccc2-c1ccccc1 MHZQALHYBOODHJ-UHFFFAOYSA-N 0.000 description 1
- 0 CC(C)(c1c2)c3cc(-c(cc4)ccc4N(c4ccc(C5CCCCC5)cc4)c(cc4)ccc4-c4ccccc4)ccc3N(c3ccc([*-])cc3)c1ccc2-c1ccccc1 Chemical compound CC(C)(c1c2)c3cc(-c(cc4)ccc4N(c4ccc(C5CCCCC5)cc4)c(cc4)ccc4-c4ccccc4)ccc3N(c3ccc([*-])cc3)c1ccc2-c1ccccc1 0.000 description 1
- LBAUFEOJCAXYMW-UHFFFAOYSA-N CC(C)(c1c2)c3cc(-c(cc4)ccc4N(c4ccccc4)c(cc4)ccc4-c4ccccc4)ccc3N(c3ccccc3)c1ccc2-c1ccccc1 Chemical compound CC(C)(c1c2)c3cc(-c(cc4)ccc4N(c4ccccc4)c(cc4)ccc4-c4ccccc4)ccc3N(c3ccccc3)c1ccc2-c1ccccc1 LBAUFEOJCAXYMW-UHFFFAOYSA-N 0.000 description 1
- MSXCLIZALVUGHV-UHFFFAOYSA-N CC(CC=C1)C=C1[n]1c(ccc(N(c(cc2)ccc2-c2ccccc2)c(cc2)ccc2-c(cc2C(C)(C)c3c4)ccc2N(c2ccccc2)c3ccc4-c2ccccc2)c2)c2c2ccccc12 Chemical compound CC(CC=C1)C=C1[n]1c(ccc(N(c(cc2)ccc2-c2ccccc2)c(cc2)ccc2-c(cc2C(C)(C)c3c4)ccc2N(c2ccccc2)c3ccc4-c2ccccc2)c2)c2c2ccccc12 MSXCLIZALVUGHV-UHFFFAOYSA-N 0.000 description 1
- DIPPGPQOUSJBQK-UHFFFAOYSA-N CC1(C)c(c(-c2ccccc2)cc(-c2ccccc2)c2)c2N(c2ccccc2)c(cc2)c1cc2-c(cc1)ccc1N(c1ccccc1)c1ccccc1 Chemical compound CC1(C)c(c(-c2ccccc2)cc(-c2ccccc2)c2)c2N(c2ccccc2)c(cc2)c1cc2-c(cc1)ccc1N(c1ccccc1)c1ccccc1 DIPPGPQOUSJBQK-UHFFFAOYSA-N 0.000 description 1
- XPJDUUCUQHCSAO-UHFFFAOYSA-N CC1(C)c(cc(cc2)-c(cc3)ccc3-[n](c(c(c3c4)c5)ccc5-c5ccccc5)c3ccc4-c3ccccc3)c2N(c(cc2)ccc2F)c2ccccc12 Chemical compound CC1(C)c(cc(cc2)-c(cc3)ccc3-[n](c(c(c3c4)c5)ccc5-c5ccccc5)c3ccc4-c3ccccc3)c2N(c(cc2)ccc2F)c2ccccc12 XPJDUUCUQHCSAO-UHFFFAOYSA-N 0.000 description 1
- ZCBZKMHAJSSSIF-UHFFFAOYSA-N CC1(C)c2cc(-c(cc3)ccc3N(c3ccccc3)c(cc3)ccc3-c3ccccc3)ccc2N(c(cc2)ccc2-c2ccccc2)c2c1cccc2 Chemical compound CC1(C)c2cc(-c(cc3)ccc3N(c3ccccc3)c(cc3)ccc3-c3ccccc3)ccc2N(c(cc2)ccc2-c2ccccc2)c2c1cccc2 ZCBZKMHAJSSSIF-UHFFFAOYSA-N 0.000 description 1
- PUBWXMKOZKYTGO-UHFFFAOYSA-N CC1(C)c2cc(F)ccc2N(c2ccccc2)c(cc2)c1cc2-c(cc1)ccc1N(c1ccccc1)c1ccccc1 Chemical compound CC1(C)c2cc(F)ccc2N(c2ccccc2)c(cc2)c1cc2-c(cc1)ccc1N(c1ccccc1)c1ccccc1 PUBWXMKOZKYTGO-UHFFFAOYSA-N 0.000 description 1
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Definitions
- the present invention relates to a compound suitable for an organic electroluminescence element, which is a self-luminous element suitable for various display devices, and to the element. Specifically, the present invention relates to a compound having an acridan ring structure, and organic electroluminescence using the compound. The present invention relates to a luminescence element.
- organic electroluminescence elements are self-luminous elements, they have been actively researched because they are brighter and more visible than liquid crystal elements, and can display clearly.
- organic electroluminescence elements using organic materials practical by developing a laminated structure element that shares various roles with each material. They are composed of a phosphor capable of transporting electrons, tris (8-hydroxyquinoline) aluminum (hereinafter abbreviated as Alq 3 ) and an aromatic amine compound capable of transporting holes, Was injected into the phosphor layer to emit light, whereby high luminance of 1000 cd / m 2 or more was obtained at a voltage of 10 V or less (see, for example, Patent Document 1 and Patent Document 2).
- Non-Patent Document 2 the use of triplet excitons has been attempted for the purpose of further improving the luminous efficiency, and the use of phosphorescent emitters has been studied (for example, see Non-Patent Document 2).
- the light emitting layer can also be prepared by doping a charge transporting compound generally called a host material with a phosphor or a phosphorescent light emitter.
- a charge transporting compound generally called a host material with a phosphor or a phosphorescent light emitter.
- the light injected from both electrodes recombines in the light emitting layer to obtain light emission.
- Improve the probability of recombination of holes and electrons by increasing the hole injection property and blocking the electron injected from the cathode, and further confine excitons generated in the light emitting layer
- high luminous efficiency can be obtained. Therefore, the role of the hole transport material is important, and there is a demand for a hole transport material that has high hole injectability, high hole mobility, high electron blocking properties, and high durability against electrons. ing.
- the heat resistance and amorphous nature of the material are important for the lifetime of the element.
- thermal decomposition occurs even at a low temperature due to heat generated when the element is driven, and the material is deteriorated.
- the thin film is crystallized even in a short time, and the element is deteriorated. For this reason, the material used is required to have high heat resistance and good amorphous properties.
- NPD N, N′-diphenyl-N, N′-di ( ⁇ -naphthyl) benzidine
- Amine derivatives have been known (see, for example, Patent Document 1 and Patent Document 2).
- NPD has a good hole transport capability, but its glass transition point (Tg), which is an index of heat resistance, is as low as 96 ° C., and device characteristics are degraded due to crystallization under high temperature conditions (for example, Non-Patent Document 3).
- arylamine compounds having a substituted acridan structure represented by the following formula for example, Compound A and Compound B have been proposed (for example, see Patent Documents 3 and 4).
- JP-A-8-48656 Japanese Patent No. 3194657 WO2006 / 033563 publication WO2007 / 110228 publication
- the object of the present invention is as a highly efficient and durable organic electroluminescent device material, excellent in hole injection / transport performance, electron blocking ability, high stability in a thin film state, and heat resistance It is another object of the present invention to provide an organic compound having excellent characteristics and to provide an organic electroluminescence device having high efficiency and high durability by using this compound.
- the physical characteristics that the organic compound to be provided by the present invention should have include (1) good hole injection characteristics, (2) high hole mobility, and (3) electron blocking ability. (4) The thin film state is stable, and (5) The heat resistance is excellent.
- the physical characteristics of the organic electroluminescent device to be provided by the present invention include (1) high luminous efficiency and power efficiency, (2) low emission start voltage, and (3) practical use. The drive voltage is low.
- the present inventors have an aromatic tertiary amine structure having a high hole injection / transport capability, and an acridan ring structure has an electron blocking property.
- a compound having an acridan ring structure was designed and chemically synthesized, and various organic electroluminescence devices were prototyped using the compound. As a result of diligent evaluation of device characteristics, the present invention has been completed.
- the present invention is a compound having a substituted acridan ring structure represented by the following general formula (1).
- A represents a substituted or unsubstituted aromatic hydrocarbon, a substituted or unsubstituted aromatic heterocyclic ring or a substituted or unsubstituted condensed polycyclic aromatic divalent group
- Ar1, Ar2, and Ar3 represent a mutual group.
- each represents a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted condensed polycyclic aromatic group, wherein Ar 2 and Ar 3 May be directly bonded to each other via a single bond or a substituted or unsubstituted methylene group, an oxygen atom or a sulfur atom, and the substituents of Ar2 and Ar3 are a single bond, substituted or unsubstituted methylene.
- a ring may be bonded to each other via a group, oxygen atom or sulfur atom, and R1 to R7 may be the same as or different from each other, and may be a hydrogen atom, a deuterium atom, a fluorine atom or a chlorine atom.
- the present invention is a compound having a substituted acridan ring structure represented by the following general formula (2).
- A represents a substituted or unsubstituted aromatic hydrocarbon, a substituted or unsubstituted aromatic heterocyclic ring or a substituted or unsubstituted condensed polycyclic aromatic divalent group
- Ar1, Ar2, and Ar3 represent a mutual group.
- each represents a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted condensed polycyclic aromatic group, wherein Ar 2 and Ar 3 May be directly bonded to each other via a single bond or a substituted or unsubstituted methylene group, an oxygen atom or a sulfur atom, and the substituents of Ar2 and Ar3 are a single bond, substituted or unsubstituted methylene.
- a ring may be bonded to each other via a group, oxygen atom or sulfur atom, and R1 to R7 may be the same as or different from each other, and may be a hydrogen atom, a deuterium atom, a fluorine atom or a chlorine atom.
- the present invention is also a compound having a substituted acridan ring structure represented by the following general formula (3).
- Ar 1, Ar 2 and Ar 3 may be the same or different from each other, and are substituted or unsubstituted aromatic hydrocarbon groups, substituted or unsubstituted aromatic heterocyclic groups, or substituted or unsubstituted condensed polycyclic aromatics.
- Ar2 and Ar3 may be directly bonded to each other through a single bond or a substituted or unsubstituted methylene group, oxygen atom or sulfur atom to form a ring, and substitution of Ar2 and Ar3
- the groups may be bonded to each other through a single bond, a substituted or unsubstituted methylene group, an oxygen atom or a sulfur atom, and R1 to R7 and R10 to R13 may be the same or different from each other,
- R9 may be the same or different from each other, and have a trifluoromethyl group, a linear or branched alkyl group having 1 to 6 carbon atoms which may have a substituent, or a substituent.
- the present invention is also a compound having a substituted acridan ring structure represented by the following general formula (4).
- A represents a substituted or unsubstituted aromatic hydrocarbon, a substituted or unsubstituted aromatic heterocyclic ring or a substituted or unsubstituted condensed polycyclic aromatic divalent group
- Ar2 and Ar3 are the same as each other.
- a single bond or a substituted or unsubstituted methylene group may be bonded to each other through an oxygen atom or a sulfur atom, and the substituents of Ar2 and Ar3 are a single bond, a substituted or unsubstituted methylene group, R1 to R7 and R14 to R18 may be the same as or different from each other, and may be a hydrogen atom, a deuterium atom, or a fluorine atom.
- a trifluoromethyl group a linear or branched alkyl group having 1 to 6 carbon atoms which may have a substituent, and a carbon atom which may have a substituent of 5
- the present invention relates to an organic electroluminescence device having a pair of electrodes and at least one organic layer sandwiched between them, and the general formula (1), the general formula (2), the general formula (3), or the general formula A compound having a substituted acridan ring structure represented by (4) is used as a constituent material of at least one organic layer.
- Examples of “a linear or branched alkyl group having 1 to 6”, “cycloalkyl group having 5 to 10 carbon atoms” or “linear or branched alkenyl group having 2 to 6 carbon atoms” include And methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, n-pentyl, isopentyl, neopentyl, n-hexyl, cyclopentyl.
- These groups may be bonded to each other through a single bond, a substituted or unsubstituted methylene group, an oxygen atom or a sulfur atom to form a ring.
- a linear or branched alkyl group having 1 to 6 carbon atoms having a substituent represented by R1 to R18 in the general formulas (1) to (4), "5 carbon atoms having a substituent”
- substituents in “to 10 cycloalkyl group” or “straight-chain or branched alkenyl group having 2 to 6 carbon atoms having a substituent” include deuterium atom, trifluoromethyl group , Cyano group, nitro group; halogen atom such as fluorine atom, chlorine atom, bromine atom, iodine atom; linear or branched alkoxy group having 1 to 6 carbon atoms such as methoxy group, ethoxy group, propyloxy group Alkenyl groups such as allyl groups; aryloxy groups such as phenoxy groups and tolyloxy groups; arylalkoxy groups such as benzyloxy groups and phenethyloxy groups; Group, bipheny
- Oxy group, cyclohexyloxy group, cycloheptyloxy group, cyclooctyloxy group, 1-adamantyloxy group and 2-adama Such as it is possible to increase the yloxy group.
- These groups may be bonded to each other through a single bond, a substituted or unsubstituted methylene group, an oxygen atom or a sulfur atom to form a ring.
- a linear or branched alkyloxy group having 1 to 6 carbon atoms having a substituent represented by R1 to R18 in the general formulas (1) to (4) or “the number of carbon atoms having a substituent”
- Specific examples of the “substituent” in “5 to 10 cycloalkyloxy groups” include deuterium atom, trifluoromethyl group, cyano group, nitro group; halogen such as fluorine atom, chlorine atom, bromine atom and iodine atom.
- alkoxy group having 1 to 6 carbon atoms such as methoxy group, ethoxy group and propyloxy group; alkenyl group such as allyl group; aryloxy group such as phenoxy group and tolyloxy group; benzyloxy Group, arylalkoxy group such as phenethyloxy group; phenyl group, biphenylyl group, terphenylyl group, naphthyl group, anthrace group Group, phenanthryl group, fluorenyl group, indenyl group, pyrenyl group, perylenyl group, fluoranthenyl group, triphenylenyl group and other aromatic hydrocarbon groups or condensed polycyclic aromatic groups; pyridyl group, furanyl group, pyranyl group, thienyl Group, furyl group, pyrrolyl group, thienyl group, quinolyl group, isoquinolyl group, benzofuranyl
- a linear or branched alkyl group having 1 to 6 carbon atoms such as a group, n-butyl group, isobutyl group, tert-butyl group, n-pentyl group, isopentyl group, neopentyl group, n-hexyl group;
- a linear or branched alkoxy group having 1 to 6 carbon atoms such as an alkenyl group
- aryloxy group in the “substituted or unsubstituted aryloxy group” represented by R1 to R18 in the general formulas (1) to (4) include a phenoxy group, a tolyloxy group, and biphenylyloxy.
- These groups may be bonded to each other through a single bond, a substituted or unsubstituted methylene group, an oxygen atom or a sulfur atom to form a ring.
- substituted aryloxy group represented by R1 to R18 in the general formulas (1) to (4) include a deuterium atom, a trifluoromethyl group, a cyano group, and a nitro group.
- Halogen atoms such as fluorine atom, chlorine atom, bromine atom, iodine atom; methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, tert-butyl group, n-pentyl group, isopentyl
- a linear or branched alkyl group having 1 to 6 carbon atoms such as a group, neopentyl group or n-hexyl group; a linear or branched alkyl group having 1 to 6 carbon atoms such as a methoxy group, an ethoxy group or a propyloxy group; Branched alkoxy group; alkenyl group such as allyl group; aralkyl group such as benzyl group, naphthylmethyl group, phenethyl group; phenoxy group, tolyl Aryloxy groups such as silyl group; arylal
- these groups may be directly bonded to each other via a single bond or a substituted or unsubstituted methylene group to form a ring.
- the “aromatic heterocyclic group” in the “substituted or unsubstituted aromatic heterocyclic group” represented by Ar2 to Ar3 in the general formulas (1) to (4) is a thienyl group or a benzothienyl group. Sulfur-containing aromatic heterocyclic groups such as benzothiazolyl group and dibenzothienyl group are preferable.
- a linear or branched alkyl group having 1 to 6 carbon atoms such as a group, n-butyl group, isobutyl group, tert-butyl group, n-pentyl group, isopentyl group, neopentyl group, n-hexyl group;
- a straight-chain or branched alkoxy group having 1 to 6 carbon atoms such as an alkeny
- substituents are substituted with each other or with a “substituted aromatic hydrocarbon group”, “substituted aromatic heterocyclic group” or “substituted condensed polycyclic aromatic group” represented by Ar1 to Ar3, substituted with a single bond, substituted Alternatively, they may be bonded to each other via an unsubstituted methylene group, oxygen atom or sulfur atom to form a ring.
- the valent group include phenylene group, biphenylene group, terphenylene group, tetrakisphenylene group, naphthylene group, anthrylene group, phenanthrylene group, fluorenylene group, phenanthrylene group, indenylene group, pyrenylene group, and peryleneylene group.
- Fluoranthenylene group, triphenylenylene group, pyridinylene group, pyrimidinylene group, quinolylene group, isoquinolylene group, indolylene group, carbazolylene group, quinoxa Ren group, benzimidazolylene alkylene group include a pyrazolylene group, naphthyridinylene group, phenanthrolinyl two alkylene groups, Akurijiniren group, thienylene group, benzothienylene group, benzothiazolyl alkylene group, dibenzo thienylene group and the like.
- a divalent group of an aromatic heterocycle in “a divalent group of a substituted or unsubstituted aromatic heterocycle” represented by A in the general formulas (1), (2) and (4) Is preferably a divalent group of a sulfur-containing aromatic heterocyclic ring such as a thienylene group, a benzothienylene group, a benzothiazolylene group or a dibenzothienylene group.
- Specific examples of the “substituent” in the “divalent group” include deuterium atom, trifluoromethyl group, cyano group, nitro group; halogen atom such as fluorine atom, chlorine atom, bromine atom, iodine atom; 1 to 6 carbon atoms such as a group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, tert-butyl group, n-pentyl group, isopentyl group, neopentyl group, n-hexyl group, etc.
- Linear or branched alkyl group linear or branched alkoxy group having 1 to 6 carbon atoms such as methoxy group, ethoxy group and propyloxy group; alkenyl group such as allyl group; benzyl group Aralkyl groups such as naphthylmethyl group and phenethyl group; aryloxy groups such as phenoxy group and tolyloxy group; arylalkoxy groups such as benzyloxy group and phenethyloxy group; phenyl group, biphenylyl group, terphenylyl group, naphthyl group, anthracenyl group, Aromatic hydrocarbon groups or condensed polycyclic aromatic groups such as phenanthryl group, fluorenyl group, indenyl group, pyrenyl group, perylenyl group, fluoranthenyl group, triphenylenyl group; pyridyl group, furanyl group, pyranyl group, thien
- the compound having an acridan ring structure represented by the general formula (4) is represented by the following general formula (4 ′), general formula (4 ′′), general formula (4 ′ ′′) or general formula (4 ′).
- a compound having an acridan ring structure represented by '' ') is preferred for use in an organic EL device.
- Ar2 and Ar3 may be the same or different from each other, and are substituted or unsubstituted aromatic hydrocarbon groups, substituted or unsubstituted aromatic heterocyclic groups, or substituted or unsubstituted condensed polycyclic aromatic groups.
- Ar2 and Ar3 may be directly bonded to each other via a single bond or a substituted or unsubstituted methylene group, an oxygen atom or a sulfur atom, and the substituents of Ar2 and Ar3 may be R1 to R7, R10 to R13, R14, R15, R17, and R18 may be the same as each other through a single bond, a substituted or unsubstituted methylene group, an oxygen atom, or a sulfur atom.
- a linear or branched alkyloxy group having 1 to 6 carbon atoms which may have a chain or branched alkenyl group, a substituent, or a carbon atom having 5 to 5 carbon atoms which may have a substituent 10 cycloalkyloxy groups, substituted or unsubstituted aromatic hydrocarbon groups, substituted or unsubstituted aromatic heterocyclic groups, substituted or unsubstituted condensed polycyclic aromatic groups, or substituted or unsubstituted aryloxy groups There, A ring may be formed by bonding to each other via a single bond, a substituted or unsubstituted methylene group, an oxygen atom or a sulfur atom. )
- Ar2 and Ar3 may be the same or different from each other, and are substituted or unsubstituted aromatic hydrocarbon groups, substituted or unsubstituted aromatic heterocyclic groups, or substituted or unsubstituted condensed polycyclic aromatic groups.
- Ar2 and Ar3 may be directly bonded to each other via a single bond or a substituted or unsubstituted methylene group, an oxygen atom or a sulfur atom, and the substituents of Ar2 and Ar3 may be A ring may be bonded to each other through a single bond, a substituted or unsubstituted methylene group, an oxygen atom or a sulfur atom, and R1 to R7 and R10 to R13 may be the same or different from each other, and may be a hydrogen atom.
- Ar2 and Ar3 may be the same or different from each other, and are substituted or unsubstituted aromatic hydrocarbon groups, substituted or unsubstituted aromatic heterocyclic groups, or substituted or unsubstituted condensed polycyclic aromatic groups.
- Ar2 and Ar3 may be directly bonded to each other via a single bond or a substituted or unsubstituted methylene group, an oxygen atom or a sulfur atom
- the substituents of Ar2 and Ar3 may be R 1, R 2, R 4 to R 7, R 10 to R 13, R 14 to R 18 may be the same as each other through a single bond, a substituted or unsubstituted methylene group, an oxygen atom or a sulfur atom.
- Ar2 and Ar3 may be the same or different from each other, and are substituted or unsubstituted aromatic hydrocarbon groups, substituted or unsubstituted aromatic heterocyclic groups, or substituted or unsubstituted condensed polycyclic aromatic groups.
- Ar2 and Ar3 may be directly bonded to each other via a single bond or a substituted or unsubstituted methylene group, an oxygen atom or a sulfur atom
- the substituents of Ar2 and Ar3 may be R 1, R 2, R 4 to R 7, R 10 to R 13, R 14, R 15, R 17, R 18 may be bonded to each other via a single bond, substituted or unsubstituted methylene group, oxygen atom or sulfur atom.
- a hydrogen atom May be the same or different from each other, and a hydrogen atom, a deuterium atom, a fluorine atom, a chlorine atom, a cyano group, a trifluoromethyl group, a nitro group, or an optionally substituted carbon atom.
- R1 and R2, R6 and R7, R10 and R11, R12 and R13, R14 and R15, R17 and R18 are single bonds, substituted or unsubstituted methylene groups, oxygen atoms or sulfur atoms
- R8 and R9 may be the same or different from each other
- the compound having an acridan ring structure represented by the general formulas (1) to (4) of the present invention is a novel compound, and has a superior electron blocking ability than a conventional hole transport material, and an excellent amorphous And a thin film state is stable.
- the compound having an acridan ring structure represented by the general formulas (1) to (4) of the present invention is a hole injection layer and / or a hole transport layer of an organic electroluminescence device (hereinafter abbreviated as an organic EL device). It can be used as a constituent material of the layer.
- an organic EL device organic electroluminescence device
- the probability of recombination of holes and electrons can be improved, high luminous efficiency can be obtained, the driving voltage is lowered, and the durability of the organic EL element is improved.
- the compound having an acridan ring structure represented by the general formulas (1) to (4) of the present invention can also be used as a constituent material of an electron blocking layer of an organic EL device.
- the driving voltage is lowered and current resistance is maintained while having high luminous efficiency. Is improved and the maximum light emission luminance of the organic EL element is improved.
- the compound having an acridan ring structure represented by the general formulas (1) to (4) of the present invention can also be used as a constituent material of a light emitting layer of an organic EL element.
- the material of the present invention which has excellent hole transportability compared to conventional materials and has a wide band gap, is used as a host material for the light-emitting layer, and supports a fluorescent or phosphorescent emitter called a dopant to emit light. By using it as a layer, it has the effect
- the organic EL device of the present invention has a higher mobility of holes than conventional hole transport materials, an excellent electron blocking ability, an excellent amorphous property, and a stable thin film state. Since a compound having a structure is used, high efficiency and high durability can be realized.
- the compound having an acridan ring structure of the present invention is useful as a constituent material of a hole injection layer, a hole transport layer, an electron blocking layer or a light emitting layer of an organic EL device, has an excellent electron blocking ability, and Amorphous property is good, thin film state is stable, and heat resistance is excellent.
- the organic EL device of the present invention has high luminous efficiency and high power efficiency, which can reduce the practical driving voltage of the device.
- FIG. 1 is a 1H-NMR chart of the compound of Example 1 of the present invention (Compound 11).
- FIG. 3 is a 1H-NMR chart of the compound of Example 2 of the present invention (Compound 19).
- FIG. 4 is a 1H-NMR chart of the compound of Example 3 of the present invention (Compound 27).
- FIG. 3 is a 1H-NMR chart of the compound of Example 4 of the present invention (Compound 12).
- FIG. 6 is a 1H-NMR chart of the compound of Example 5 of the present invention (Compound 13).
- FIG. 6 is a 1H-NMR chart of the compound of Example 6 of the present invention (Compound 24).
- FIG. 6 is a 1H-NMR chart of the compound of Example 7 of the present invention (Compound 23).
- FIG. 5 is a diagram showing EL element configurations of Example 10, Example 11, and Comparative Example 1;
- the compound having an acridan ring structure of the present invention is a novel compound, and these compounds can be synthesized as follows, for example.
- 2-bromo-10-arylacridane was synthesized by bromination of the corresponding acridan substituted at the 10-position with an aryl group with bromine or N-bromosuccinimide (see, for example, Patent Document 3)
- a compound having an acridan ring structure can be synthesized by performing a cross-coupling reaction such as Suzuki coupling (see, for example, Non-Patent Document 5).
- an acridan ring structure of the present invention can be synthesized as follows. First, an acridan ring structure is obtained by performing a cross-coupling reaction such as Ullmann coupling between an acridan substituted with an arylamino group at the corresponding 2-position and various aryl halides (see, for example, Non-Patent Document 6). Compounds can be synthesized.
- glass transition point (Tg), melting point and work function were measured.
- the glass transition point (Tg) is an index of stability in a thin film state
- the melting point is an index of vapor deposition
- the work function is an index of hole transportability.
- the glass transition point (Tg) and melting point were determined with a high-sensitivity differential scanning calorimeter (manufactured by Bruker AXS, DSC3100S) using powder.
- the work function was measured using an atmospheric photoelectron spectrometer (AC-3 type, manufactured by Riken Keiki Co., Ltd.) by forming a 100 nm thin film on the ITO substrate.
- the structure of the organic EL device of the present invention includes an anode, a hole transport layer, an electron blocking layer, a light-emitting layer, an electron transport layer, and a cathode sequentially on the substrate, and between the anode and the hole transport layer. And those having an electron injection layer between the electron transport layer and the cathode.
- these multilayer structures several organic layers can be omitted.
- a structure having an anode, a hole transport layer, a light-emitting layer, an electron transport layer, and a cathode sequentially on a substrate can be used. .
- an electrode material having a large work function such as ITO or gold is used.
- a hole injection layer of the organic EL device of the present invention in addition to a compound having an acridan ring structure represented by the general formula (1) of the present invention, a porphyrin compound represented by copper phthalocyanine, a starburst type triphenylamine Derivatives, materials such as various triphenylamine tetramers, acceptor heterocyclic compounds such as hexacyanoazatriphenylene, and coating-type polymer materials can be used. These materials can be formed into a thin film by a known method such as a spin coating method or an ink jet method in addition to a vapor deposition method.
- N, N′-diphenyl-N, N′-di (m- Tolyl) benzidine hereinafter abbreviated as TPD
- NPD N, N′-diphenyl-N, N′-di ( ⁇ -naphthyl) benzidine
- NPD N, N, N ′, N′— Benzidine derivatives such as tetrabiphenylylbenzidine, 1,1-bis [4- (di-4-tolylamino) phenyl] cyclohexane (hereinafter abbreviated as TAPC), various triphenylamine trimers and tetramers, etc.
- TPD N, N′-diphenyl-N, N′-di (m- Tolyl) benzidine
- NPD N, N′-diphenyl-N, N′-di ( ⁇ -naphthyl) benzidine
- NPD N, N, N ′, N′— Benzidine derivatives such
- a coating type such as poly (3,4-ethylenedioxythiophene) (hereinafter abbreviated as PEDOT) / poly (styrene sulfonate) (hereinafter abbreviated as PSS) is used. These polymer materials can be used. These materials can be formed into a thin film by a known method such as a spin coating method or an ink jet method in addition to a vapor deposition method.
- a material that is usually used for the layer is further P-doped with trisbromophenylamine hexachloroantimony or the like, or a TPD structure having a partial structure. Molecular compounds and the like can be used.
- TCTA N-carbazolyl triphenyl Amine
- mCP 1,3-bis (carbazol-9-yl) benzene
- Ad-Cz Carbazole derivatives such as 2,2-bis (4-carbazol-9-ylphenyl) adamantane
- Ad-Cz 9- [4- (carbazol-9-yl) phenyl] -9- [
- a compound having an electron blocking action such as a compound having a triphenylsilyl group and a triarylamine structure represented by 4- (triphenylsilyl) phenyl]
- These may be formed alone, but may be used as a single layer formed by mixing with other materials, layers formed alone, mixed layers formed, or A stacked structure of layers formed by mixing with a layer formed alone may be used.
- These materials can be formed into a thin film by a known method such as a spin coating method or an ink jet method in addition to a vapor deposition method.
- the light emitting layer of the organic EL device of the present invention various metal complexes, anthracene derivatives, bisstyrylbenzene derivatives, pyrene derivatives, oxazole derivatives, polyparaphenylene vinylene derivatives, etc., in addition to metal complexes of quinolinol derivatives including Alq 3 can be used.
- the light emitting layer may be composed of a host material and a dopant material.
- the compound having an acridan ring structure represented by the general formula (1) of the present invention as the host material in addition to the light emitting material, thiazole Derivatives, benzimidazole derivatives, polydialkylfluorene derivatives and the like can be used.
- quinacridone coumarin, rubrene, perylene, and derivatives thereof
- benzopyran derivatives rhodamine derivatives, aminostyryl derivatives, and the like
- These may be formed alone, but may be used as a single layer formed by mixing with other materials, layers formed alone, mixed layers formed, or A stacked structure of layers formed by mixing with a layer formed alone may be used.
- a phosphorescent material can be used as the light emitting material.
- a phosphorescent emitter of a metal complex such as iridium or platinum can be used.
- Green phosphorescent emitters such as Ir (ppy) 3
- blue phosphorescent emitters such as FIrpic and FIr6, and red phosphorescent emitters
- Btp 2 Ir (acac) are used as the host material.
- carbazole derivatives such as 4,4′-di (N-carbazolyl) biphenyl (hereinafter abbreviated as CBP), TCTA, mCP, etc.
- a compound having an acridan ring structure represented can be used as a hole injection / transport host material.
- a compound having an acridan ring structure represented can be used.
- an electron transporting host material p-bis (triphenylsilyl) benzene (hereinafter abbreviated as UGH2) or 2,2 ′, 2 ′′-(1,3,5-phenylene) -tris (1-phenyl) -1H-benzimidazole) (hereinafter abbreviated as TPBI) can be used, and a high-performance organic EL device can be produced.
- the phosphorescent light-emitting material into the host material by co-evaporation in the range of 1 to 30 weight percent with respect to the entire light-emitting layer.
- These materials can be formed into a thin film by a known method such as a spin coating method or an ink jet method in addition to a vapor deposition method.
- phenanthroline derivatives such as bathocuproine (hereinafter abbreviated as BCP), aluminum (III) bis (2-methyl-8-quinolinato) -4-phenylphenolate (hereinafter referred to as “BCP”).
- BCP bathocuproine
- BCP aluminum (III) bis (2-methyl-8-quinolinato) -4-phenylphenolate
- BCP aluminum (III) bis (2-methyl-8-quinolinato) -4-phenylphenolate
- various rare earth complexes, triazole derivatives, triazine derivatives, oxadiazole derivatives, and the like can be used. These materials may also serve as the material for the electron transport layer.
- These may be formed alone, but may be used as a single layer formed by mixing with other materials, layers formed alone, mixed layers formed, or A stacked structure of layers formed by mixing with a layer formed alone may be used.
- These materials can be formed into a thin film by a known method such as a spin coating method or an ink jet method in addition to a vapor deposition method.
- various metal complexes triazole derivatives, triazine derivatives, oxadiazole derivatives, thiadiazole derivatives, carbodiimide derivatives, quinoxaline, in addition to metal complexes of quinolinol derivatives including Alq 3 and BAlq.
- Derivatives, phenanthroline derivatives, silole derivatives and the like can be used. These may be formed alone, but may be used as a single layer formed by mixing with other materials, layers formed alone, mixed layers formed, or A stacked structure of layers formed by mixing with a layer formed alone may be used. These materials can be formed into a thin film by a known method such as a spin coating method or an ink jet method in addition to a vapor deposition method.
- an alkali metal salt such as lithium fluoride and cesium fluoride
- an alkaline earth metal salt such as magnesium fluoride
- a metal oxide such as aluminum oxide
- an electrode material having a low work function such as aluminum or an alloy having a lower work function such as a magnesium silver alloy, a magnesium indium alloy, or an aluminum magnesium alloy is used as the electrode material.
- Tetrakis (triphenylphosphine) palladium (0.20 g) was added and heated, followed by stirring at 68 ° C. for 8 hours. The mixture was allowed to cool to room temperature, and the organic layer was collected by a liquid separation operation. The organic layer was dried over magnesium sulfate and then concentrated under reduced pressure to obtain a yellow amorphous crude product. The crude product was recrystallized with n-hexane and dissolved by adding 30 ml of toluene, followed by adsorption purification using 1.17 g of silica gel.
- Crystals were precipitated by adding 20 ml of methanol to this solution, and further purified by recrystallization using toluene / methanol to produce [4- (9,9-dimethyl-7,10-diphenylacridan-2-yl). Phenyl] -diphenylamine (1.9 g, yield 54%) was obtained as a white powder.
- Tetrakis (triphenylphosphine) palladium (0.26 g) was added and heated, followed by stirring at 72 ° C. for 7 hours. After allowing to cool to room temperature, 50 ml of methanol was added, and the precipitated solid was collected by filtration and washed with water to obtain a reddish brown crude product.
- Tetrakis (triphenylphosphine) palladium (0.23 g) was added and heated, followed by stirring at 72 ° C. for 4.5 hours. The mixture was allowed to cool to room temperature, and the organic layer was collected by a liquid separation operation. The organic layer was dried over magnesium sulfate and then concentrated under reduced pressure to obtain a red crude product.
- the crude product was dissolved by adding 75 ml of toluene, purified by adsorption using 5.2 g of silica gel, and then purified by recrystallization using toluene / methanol to obtain bis (biphenyl-4-yl)-[4.
- a white powder of 3.19 g (yield 64%) of-(9,9-dimethyl-7,10-diphenylacridan-2-yl) phenyl] amine was obtained.
- the structure of the obtained white powder was identified using NMR. The result of 1H-NMR measurement is shown in FIG.
- the crude product was dissolved by adding 200 ml of toluene, subjected to adsorption purification using 2.4 g of silica gel, and then crystallized using toluene / methanol to obtain (phenyl-4-yl)-[4- ⁇ A white powder of 3.07 g (yield 78%) of 10- (biphenyl-4-yl) -9,9-dimethyl-7-phenylacridan-2-yl ⁇ phenyl] -phenylamine was obtained.
- Tetrakis (triphenylphosphine) palladium (0.11 g) was added and heated, followed by stirring at 72 ° C. for 8.5 hours. After allowing to cool to room temperature, 40 ml of methanol was added, and the precipitated solid was collected by filtration and washed with water to obtain an orange crude product. The crude product was dissolved by adding 360 ml of toluene, subjected to adsorption purification using 3.6 g of silica gel, and then repeated crystallization using toluene / methanol three times.
- the compound of the present invention has a glass transition point of 100 ° C. or higher, which indicates that the thin film state is stable in the compound of the present invention.
- the compound of the present invention exhibits a suitable energy level as compared with the work function 5.4 eV of general hole transport materials such as NPD and TPD, and has a good hole transport capability.
- the organic EL element has a hole injection layer 3, a hole transport layer 4, a light emitting layer 5, an electron transport layer on a glass substrate 1 on which an ITO electrode is previously formed as a transparent anode 2 as shown in FIG. 6, an electron injection layer 7 and a cathode (aluminum electrode) 8 were deposited in this order.
- the glass substrate 1 on which ITO having a thickness of 150 nm was formed was washed with an organic solvent, and then the surface was washed by oxygen plasma treatment. Then, this glass substrate with an ITO electrode was mounted in a vacuum vapor deposition machine and the pressure was reduced to 0.001 Pa or less. Subsequently, a compound 77 having the following structural formula was formed to a thickness of 20 nm as the hole injection layer 3 so as to cover the transparent anode 2. On this hole injection layer 3, the compound (compound 19) of Example 2 of the present invention was formed as a hole transport layer 4 so as to have a film thickness of 40 nm.
- a film thickness of 30 nm On this emitting layer 5 was formed to have the Alq 3 film thickness 30nm as an electron transport layer 6.
- lithium fluoride was formed as the electron injection layer 7 so as to have a film thickness of 0.5 nm.
- aluminum was deposited to a thickness of 150 nm to form the cathode 8.
- the characteristic measurement was performed at normal temperature in air
- Table 1 summarizes the measurement results of the light emission characteristics when a DC voltage was applied to the organic EL device produced using the compound of Example 2 (Compound 19) of the present invention.
- Example 10 In Example 10, except that the compound (Compound 13) of Example 5 of the present invention was formed so as to have a film thickness of 40 nm instead of the compound (Compound 19) of Example 2 of the present invention as the material of the hole transport layer 4.
- An organic EL element was produced under the same conditions. About the produced organic EL element, the characteristic measurement was performed at normal temperature in air
- Example 10 For comparison, in Example 10, except that the compound 80 of the following structural formula was formed to a film thickness of 40 nm instead of the compound of Example 2 of the present invention (Compound 19) as the material of the hole transport layer 4.
- An organic EL element was produced under the same conditions. About the produced organic EL element, the characteristic measurement was performed at normal temperature in air
- the driving voltage when a current density of 10 mA / cm 2 was passed was 5.82 V for Compound 80, and 4.82 V for Compound (Compound 19) of Example 2 of the present invention.
- the voltage was lowered to 4.96 V in all cases.
- the compound of Example 2 of the present invention is 6.26 lm / W compared to 5.49 lm / W of Compound 80, and 5 for the compound of Example 5 of the present invention (Compound 13). Both improved to .76 lm / W.
- the compound of the present invention was improved with respect to the compound 80 in both luminance and luminous efficiency.
- the organic EL device using the compound having an acridan ring structure of the present invention is improved in luminous efficiency and power efficiency as compared with the organic EL device using the compound 80, It was found that a decrease in practical driving voltage can be achieved.
- the compound having an acridan ring structure of the present invention is excellent as a compound for an organic EL device because it has a high hole transport ability, excellent amorphous properties, and a stable thin film state.
- an organic EL element using the compound, high luminous efficiency and power efficiency can be obtained, practical driving voltage can be lowered, and durability can be improved. For example, it has become possible to expand to household appliances and lighting applications.
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Abstract
Description
ここで、一般式(1)~(4)中のAr2~Ar3で表される「置換もしくは無置換の芳香族複素環基」における「芳香族複素環基」としては、チエニル基、ベンゾチエニル基、ベンゾチアゾリル基、ジベンゾチエニル基など含硫黄芳香族複素環基が好ましい。
ここで、一般式(1)、(2)および(4)中のAで表される「置換もしくは無置換の芳香族複素環の2価基」における「芳香族複素環の2価基」としては、チエニレン基、ベンゾチエニレン基、ベンゾチアゾリレン基、ジベンゾチエニレン基など含硫黄芳香族複素環の2価基が好ましい。
窒素雰囲気下、反応容器に、2-ブロモ-9,9-ジメチル-7,10-ジフェニルアクリダン2.54g、4-(ジフェニルアミノ)フェニルボロン酸1.75g、トルエン25ml、エタノール2ml、2M炭酸カリウム水溶液9mlを加え、超音波を照射しながら30分間窒素ガスを通気した。テトラキス(トリフェニルホスフィン)パラジウム0.20gを加えて加熱し、68℃で8時間攪拌した。室温まで放冷し、分液操作によって有機層を採取した。有機層を硫酸マグネシウムで乾燥させた後、減圧下で濃縮することによって黄色アモルファス状の粗製物を得た。粗製物をn-ヘキサンによる再結晶を行った後、トルエン30mlを加えて溶解し、シリカゲル1.17gを用いた吸着精製を行った。この溶液に、メタノール20mlを加えて結晶を析出させ、さらにトルエン/メタノールを用いた再結晶による精製を行って[4-(9,9-ジメチル-7,10-ジフェニルアクリダン-2-イル)フェニル]-ジフェニルアミン1.9g(収率54%)の白色粉体を得た。
窒素置換した反応容器に、[4-(9,9-ジメチルアクリダン-2-イル)フェニル]-ジフェニルアミン2.02g、2-ブロモ-9,9-ジメチル-9H-フルオレン1.37g、銅紛0.036g、炭酸カリウム0.94g、亜硫酸水素ナトリウム0.078g、ドデカン4mlを加え、200℃で35時間撹拌した。室温まで放冷した後、トルエン30ml、メタノール30mlを加え、析出する不溶物をろ過によって除き、減圧下で濃縮することによって黒色の粗製物を得た。粗製物をカラムクロマトグラフ(担体:シリカゲル、溶離液:ヘキサン/トルエン)によって精製した後、ジイソプロピルエーテル/メタノールによる晶析、続いて酢酸エチル/ジイソプロピルエーテル/ヘキサンによる晶析を行うことによって、{4-[10-(9,9-ジメチル-9H-フルオレン-2-イル)-9,9-ジメチルアクリダン-2-イル]フェニル}-ジフェニルアミン0.96g(収率33%)の淡黄白色粉体を得た。
窒素置換した反応容器に、9,9-ジメチル-2,10-ジフェニル-7-(4,4,5,5-テトラメチル-[1,3,2]ジオキサボラン-2-イル)アクリダン2.02g、(4-ブロモフェニル)-(9,9-ジメチル-9H-フルオレン-2-イル)-フェニルアミン1.90g、トルエン20ml、エタノール2ml、2M炭酸カリウム水溶液6mlを加え、超音波を照射しながら30分間窒素ガスを通気した。テトラキス(トリフェニルホスフィン)パラジウム0.14gを加えて加熱し、72℃で8.5時間攪拌した。室温まで放冷し、分液操作によって有機層を採取した。有機層を硫酸マグネシウムで乾燥させた後、減圧下で濃縮することによって褐色の粗製物を得た。粗製物をカラムクロマトグラフ(担体:シリカゲル、溶離液:ヘキサン/トルエン)によって精製した後、さらにアセトン/メタノールで晶析を行うことによって、[4-(9,9-ジメチル-7,10-ジフェニルアクリダン-2-イル)フェニル]-(9,9-ジメチル-9H-フルオレン-2-イル)-フェニルアミン1.98g(収率64%)の白色粉体を得た。
窒素置換した反応容器に、2-ブロモ-9,9-ジメチル-7,10-ジフェニルアクリダン3.2g、(ビフェニル-4-イル)-[4-(4,4,5,5-テトラメチル-[1,3,2]ジオキサボラン-2イル)フェニル]-フェニルアミン3.6g、トルエン40ml、エタノール10ml、2M炭酸カリウム水溶液11mlを加え、超音波を照射しながら30分間窒素ガスを通気した。テトラキス(トリフェニルホスフィン)パラジウム0.26gを加えて加熱し、72℃で7時間攪拌した。室温まで放冷した後、メタノール50mlを加え、析出する固体をろ過によって採取し、水で洗浄することによって、赤褐色の粗製物を得た。この粗製物にトルエン100mlを加えて溶解し、シリカゲル3.7gを用いた吸着精製を2回繰り返した後、トルエン/メタノールを用いた晶析を行って、(ビフェニル-4-イル)-[4-(9,9-ジメチル-7,10-ジフェニルアクリダン-2-イル)フェニル]-フェニルアミン3.42g(収率68%)の白色粉体を得た。
窒素置換した反応容器に、2-ブロモ-9,9-ジメチル-7,10-ジフェニルアクリダン2.9g、ビス(ビフェニル-4-イル)-[4-(4,4,5,5-テトラメチル-[1,3,2]ジオキサボラン-2-イル)フェニル]アミン4.0g、トルエン44ml、エタノール11ml、2M炭酸カリウム水溶液8.4mlを加え、超音波を照射しながら30分間窒素ガスを通気した。テトラキス(トリフェニルホスフィン)パラジウム0.23gを加えて加熱し、72℃で4.5時間攪拌した。室温まで放冷し、分液操作によって有機層を採取した。有機層を硫酸マグネシウムで乾燥させた後、減圧下で濃縮することによって赤色の粗製物を得た。粗製物にトルエン75mlを加えて溶解し、シリカゲル5.2gを用いた吸着精製を行った後、トルエン/メタノールを用いた再結晶による精製を行って、ビス(ビフェニル-4-イル)-[4-(9,9-ジメチル-7,10-ジフェニルアクリダン-2-イル)フェニル]アミン3.19g(収率64%)の類白色粉を得た。
窒素置換した反応容器に、2-ブロモ-10-(ビフェニル-4-イル)-9,9-ジメチル-7-フェニルアクリダン2.7g、(ビフェニル-4-イル)-[4-(4,4,5,5-テトラメチル-[1,3,2]ジオキサボラン-2-イル)フェニル]-フェニルアミン2.8g、トルエン40ml、エタノール10ml、2M炭酸カリウム水溶液8mlを加え、超音波を照射しながら30分間窒素ガスを通気した。テトラキス(トリフェニルホスフィン)パラジウム0.13gを加えて加熱し、72℃で3.5時間攪拌した。室温まで放冷した後、メタノール50mlを加え、析出する固体をろ過によって採取し、水で洗浄することによって、橙色の粗製物を得た。この粗製物にトルエン200mlを加えて溶解し、シリカゲル2.4gを用いた吸着精製を行った後、トルエン/メタノールを用いた晶析を行って、(フェニル-4-イル)-[4-{10-(ビフェニル-4-イル)-9,9-ジメチル-7-フェニルアクリダン-2-イル}フェニル]-フェニルアミン3.07g(収率78%)の白色粉体を得た。
窒素置換した反応容器に、2-ブロモ-10-(ビフェニル-4-イル)-9,9-ジメチル-7-フェニルアクリダン2.5g、ビス(ビフェニル-4-イル)-[4-(4,4,5,5-テトラメチル-[1,3,2]ジオキサボラン-2-イル)フェニル]アミン3.0g、トルエン37ml、エタノール9.3ml、2M炭酸カリウム水溶液7.2mlを加え、超音波を照射しながら30分間窒素ガスを通気した。テトラキス(トリフェニルホスフィン)パラジウム0.11gを加えて加熱し、72℃で8.5時間攪拌した。室温まで放冷した後、メタノール40mlを加え、析出する固体をろ過によって採取し、水で洗浄することによって、橙色の粗製物を得た。この粗製物にトルエン360mlを加えて溶解し、シリカゲル3.6gを用いた吸着精製を行った後、トルエン/メタノールを用いた晶析を3回繰返した。さらに、メタノール60mlを加え、加熱還流することによる洗浄精製を行うことによって、ビス(ビフェニル-4-イル)-[4-{10-(ビフェニル-4-イル)-9,9-ジメチル-7-フェニルアクリダン-2-イル}フェニル]アミン3.04g(収率75%)の白色粉体を得た。
融点 ガラス転移点
本発明実施例1の化合物 248℃ 106℃
本発明実施例2の化合物 142℃ 115℃
本発明実施例3の化合物 162℃ 129℃
本発明実施例4の化合物 254℃ 118℃
本発明実施例5の化合物 258℃ 136℃
本発明実施例6の化合物 164℃ 130℃
仕事関数
本発明実施例1の化合物 5.45eV
本発明実施例2の化合物 5.41eV
本発明実施例3の化合物 5.45eV
本発明実施例4の化合物 5.41eV
本発明実施例5の化合物 5.41eV
本発明実施例6の化合物 5.49eV
比較のために、実施例10において、正孔輸送層4の材料として本発明実施例2の化合物(化合物19)に代えて下記構造式の化合物80を膜厚40nmとなるように形成した以外は、同様の条件で有機EL素子を作製した。作製した有機EL素子について、大気中、常温で特性測定を行なった。作製した有機EL素子に直流電圧を印加したときの発光特性の測定結果を表1にまとめて示した。
2 透明電極
3 正孔注入層
4 正孔輸送層
5 発光層
6 電子輸送層
7 電子注入層
8 陰極
Claims (13)
- 下記一般式(1)で表される、アクリダン環構造を有する化合物。
(1)
(式中、Aは置換もしくは無置換の芳香族炭化水素、置換もしくは無置換の芳香族複素環または置換もしくは無置換の縮合多環芳香族の2価基を表し、Ar1、Ar2、Ar3は相互に同一でも異なってもよく、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基または置換もしくは無置換の縮合多環芳香族基を表す。ここで、Ar2およびAr3が直接、単結合または置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成してもよく、Ar2、Ar3の置換基が単結合、置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成してもよい。R1~R7は相互に同一でも異なってもよく、水素原子、重水素原子、フッ素原子、塩素原子、シアノ基、トリフルオロメチル基、ニトロ基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基、置換基を有していてもよい炭素原子数5ないし10のシクロアルキル基、置換基を有していてもよい炭素原子数2ないし6の直鎖状もしくは分岐状のアルケニル基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキルオキシ基、置換基を有していてもよい炭素原子数5ないし10のシクロアルキルオキシ基、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基、置換もしくは無置換の縮合多環芳香族基または置換もしくは無置換のアリールオキシ基であって、単結合、置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成してもよい。R8、R9は相互に同一でも異なってもよく、トリフルオロメチル基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基、置換基を有していてもよい炭素原子数5ないし10のシクロアルキル基、置換基を有していてもよい炭素原子数2ないし6の直鎖状もしくは分岐状のアルケニル基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキルオキシ基、置換基を有していてもよい炭素原子数5ないし10のシクロアルキルオキシ基、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基、置換もしくは無置換の縮合多環芳香族基または置換もしくは無置換のアリールオキシ基であって、単結合、置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成してもよい。) - 下記一般式(2)で表される、アクリダン環構造を有する化合物。
(2)
(式中、Aは置換もしくは無置換の芳香族炭化水素、置換もしくは無置換の芳香族複素環または置換もしくは無置換の縮合多環芳香族の2価基を表し、Ar1、Ar2、Ar3は相互に同一でも異なってもよく、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基または置換もしくは無置換の縮合多環芳香族基を表す。ここで、Ar2およびAr3が直接、単結合または置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成してもよく、Ar2、Ar3の置換基が単結合、置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成してもよい。R1~R7は相互に同一でも異なってもよく、水素原子、重水素原子、フッ素原子、塩素原子、シアノ基、トリフルオロメチル基、ニトロ基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基、置換基を有していてもよい炭素原子数5ないし10のシクロアルキル基、置換基を有していてもよい炭素原子数2ないし6の直鎖状もしくは分岐状のアルケニル基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキルオキシ基、置換基を有していてもよい炭素原子数5ないし10のシクロアルキルオキシ基、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基、置換もしくは無置換の縮合多環芳香族基または置換もしくは無置換のアリールオキシ基であって、単結合、置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成してもよい。R8、R9は相互に同一でも異なってもよく、トリフルオロメチル基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基、置換基を有していてもよい炭素原子数5ないし10のシクロアルキル基、置換基を有していてもよい炭素原子数2ないし6の直鎖状もしくは分岐状のアルケニル基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキルオキシ基、置換基を有していてもよい炭素原子数5ないし10のシクロアルキルオキシ基、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基、置換もしくは無置換の縮合多環芳香族基または置換もしくは無置換のアリールオキシ基であって、単結合、置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成してもよい。) - 下記一般式(3)で表される、アクリダン環構造を有する化合物。
(3)
(式中、Ar1、Ar2、Ar3は相互に同一でも異なってもよく、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基または置換もしくは無置換の縮合多環芳香族基を表す。ここで、Ar2およびAr3が直接、単結合または置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成してもよく、Ar2、Ar3の置換基が単結合、置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成してもよい。R1~R7、R10~R13は相互に同一でも異なってもよく、水素原子、重水素原子、フッ素原子、塩素原子、シアノ基、トリフルオロメチル基、ニトロ基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基、置換基を有していてもよい炭素原子数5ないし10のシクロアルキル基、置換基を有していてもよい炭素原子数2ないし6の直鎖状もしくは分岐状のアルケニル基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキルオキシ基、置換基を有していてもよい炭素原子数5ないし10のシクロアルキルオキシ基、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基、置換もしくは無置換の縮合多環芳香族基または置換もしくは無置換のアリールオキシ基であって、R1とR2、R2とR3、R3とR4、R6とR7、R10とR11、R12とR13が単結合、置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成してもよい。R8、R9は相互に同一でも異なってもよく、トリフルオロメチル基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基、置換基を有していてもよい炭素原子数5ないし10のシクロアルキル基、置換基を有していてもよい炭素原子数2ないし6の直鎖状もしくは分岐状のアルケニル基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキルオキシ基、置換基を有していてもよい炭素原子数5ないし10のシクロアルキルオキシ基、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基、置換もしくは無置換の縮合多環芳香族基または置換もしくは無置換のアリールオキシ基であって、単結合、置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成してもよい。) - 下記一般式(4)で表される、アクリダン環構造を有する化合物。
(4)
(式中、Aは置換もしくは無置換の芳香族炭化水素、置換もしくは無置換の芳香族複素環または置換もしくは無置換の縮合多環芳香族の2価基を表し、Ar2、Ar3は相互に同一でも異なってもよく、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基または置換もしくは無置換の縮合多環芳香族基を表す。ここで、Ar2およびAr3が直接、単結合または置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成してもよく、Ar2、Ar3の置換基が単結合、置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成してもよい。R1~R7、R14~R18は相互に同一でも異なってもよく、水素原子、重水素原子、フッ素原子、塩素原子、シアノ基、トリフルオロメチル基、ニトロ基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基、置換基を有していてもよい炭素原子数5ないし10のシクロアルキル基、置換基を有していてもよい炭素原子数2ないし6の直鎖状もしくは分岐状のアルケニル基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキルオキシ基、置換基を有していてもよい炭素原子数5ないし10のシクロアルキルオキシ基、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基、置換もしくは無置換の縮合多環芳香族基または置換もしくは無置換のアリールオキシ基であって、R1とR2、R2とR3、R3とR4、R6とR7、R14とR15、R15とR16、R16とR17、R17とR18が単結合、置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成してもよい。R8、R9は相互に同一でも異なってもよく、トリフルオロメチル基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基、置換基を有していてもよい炭素原子数5ないし10のシクロアルキル基、置換基を有していてもよい炭素原子数2ないし6の直鎖状もしくは分岐状のアルケニル基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキルオキシ基、置換基を有していてもよい炭素原子数5ないし10のシクロアルキルオキシ基、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基、置換もしくは無置換の縮合多環芳香族基または置換もしくは無置換のアリールオキシ基であって、単結合、置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成してもよい。) - 下記一般式(4’)で表される、請求項4記載のアクリダン環構造を有する化合物。
(4’)
(式中、Ar2、Ar3は相互に同一でも異なってもよく、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基または置換もしくは無置換の縮合多環芳香族基を表す。ここで、Ar2およびAr3が直接、単結合または置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成してもよく、Ar2、Ar3の置換基が単結合、置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成してもよい。R1~R7、R10~R13、R14、R15、R17、R18は相互に同一でも異なってもよく、水素原子、重水素原子、フッ素原子、塩素原子、シアノ基、トリフルオロメチル基、ニトロ基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基、置換基を有していてもよい炭素原子数5ないし10のシクロアルキル基、置換基を有していてもよい炭素原子数2ないし6の直鎖状もしくは分岐状のアルケニル基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキルオキシ基、置換基を有していてもよい炭素原子数5ないし10のシクロアルキルオキシ基、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基、置換もしくは無置換の縮合多環芳香族基または置換もしくは無置換のアリールオキシ基であって、R1とR2、R2とR3、R3とR4、R6とR7、R10とR11、R12とR13、R14とR15、R17とR18が単結合、置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成してもよい。R8、R9は相互に同一でも異なってもよく、トリフルオロメチル基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基、置換基を有していてもよい炭素原子数5ないし10のシクロアルキル基、置換基を有していてもよい炭素原子数2ないし6の直鎖状もしくは分岐状のアルケニル基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキルオキシ基、置換基を有していてもよい炭素原子数5ないし10のシクロアルキルオキシ基、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基、置換もしくは無置換の縮合多環芳香族基または置換もしくは無置換のアリールオキシ基であって、単結合、置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成してもよい。) - 下記一般式(4’’)で表される、請求項4記載のアクリダン環構造を有する化合物。
(4’’)
(式中、Ar2、Ar3は相互に同一でも異なってもよく、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基または置換もしくは無置換の縮合多環芳香族基を表す。ここで、Ar2およびAr3が直接、単結合または置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成してもよく、Ar2、Ar3の置換基が単結合、置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成してもよい。R1~R7、R10~R13は相互に同一でも異なってもよく、水素原子、重水素原子、フッ素原子、塩素原子、シアノ基、トリフルオロメチル基、ニトロ基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基、置換基を有していてもよい炭素原子数5ないし10のシクロアルキル基、置換基を有していてもよい炭素原子数2ないし6の直鎖状もしくは分岐状のアルケニル基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキルオキシ基、置換基を有していてもよい炭素原子数5ないし10のシクロアルキルオキシ基、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基、置換もしくは無置換の縮合多環芳香族基または置換もしくは無置換のアリールオキシ基であって、R1とR2、R2とR3、R3とR4、R6とR7、R10とR11、R12とR13が単結合、置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成してもよい。R8、R9は相互に同一でも異なってもよく、トリフルオロメチル基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基、置換基を有していてもよい炭素原子数5ないし10のシクロアルキル基、置換基を有していてもよい炭素原子数2ないし6の直鎖状もしくは分岐状のアルケニル基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキルオキシ基、置換基を有していてもよい炭素原子数5ないし10のシクロアルキルオキシ基、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基、置換もしくは無置換の縮合多環芳香族基または置換もしくは無置換のアリールオキシ基であって、単結合、置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成してもよい。) - 下記一般式(4’’’)で表される、請求項4記載のアクリダン環構造を有する化合物。
(4’’’)
(式中、Ar2、Ar3は相互に同一でも異なってもよく、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基または置換もしくは無置換の縮合多環芳香族基を表す。ここで、Ar2およびAr3が直接、単結合または置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成してもよく、Ar2、Ar3の置換基が単結合、置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成してもよい。R1、R2、R4~R7、R10~R13、R14~R18は相互に同一でも異なってもよく、水素原子、重水素原子、フッ素原子、塩素原子、シアノ基、トリフルオロメチル基、ニトロ基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基、置換基を有していてもよい炭素原子数5ないし10のシクロアルキル基、置換基を有していてもよい炭素原子数2ないし6の直鎖状もしくは分岐状のアルケニル基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキルオキシ基、置換基を有していてもよい炭素原子数5ないし10のシクロアルキルオキシ基、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基、置換もしくは無置換の縮合多環芳香族基または置換もしくは無置換のアリールオキシ基であって、R1とR2、R6とR7、R10とR11、R12とR13、R14とR15、R15とR16、R16とR17、R17とR18が単結合、置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成してもよい。R8、R9は相互に同一でも異なってもよく、トリフルオロメチル基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基、置換基を有していてもよい炭素原子数5ないし10のシクロアルキル基、置換基を有していてもよい炭素原子数2ないし6の直鎖状もしくは分岐状のアルケニル基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキルオキシ基、置換基を有していてもよい炭素原子数5ないし10のシクロアルキルオキシ基、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基、置換もしくは無置換の縮合多環芳香族基または置換もしくは無置換のアリールオキシ基であって、単結合、置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成してもよい。) - 下記一般式(4’’’’)で表される、請求項4記載のアクリダン環構造を有する化合物。
(4’’’’)
(式中、Ar2、Ar3は相互に同一でも異なってもよく、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基または置換もしくは無置換の縮合多環芳香族基を表す。ここで、Ar2およびAr3が直接、単結合または置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成してもよく、Ar2、Ar3の置換基が単結合、置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成してもよい。R1、R2、R4~R7、R10~R13、R14、R15、R17、R18は相互に同一でも異なってもよく、水素原子、重水素原子、フッ素原子、塩素原子、シアノ基、トリフルオロメチル基、ニトロ基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基、置換基を有していてもよい炭素原子数5ないし10のシクロアルキル基、置換基を有していてもよい炭素原子数2ないし6の直鎖状もしくは分岐状のアルケニル基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキルオキシ基、置換基を有していてもよい炭素原子数5ないし10のシクロアルキルオキシ基、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基、置換もしくは無置換の縮合多環芳香族基または置換もしくは無置換のアリールオキシ基であって、R1とR2、R6とR7、R10とR11、R12とR13、R14とR15、R17とR18が単結合、置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成してもよい。R8、R9は相互に同一でも異なってもよく、トリフルオロメチル基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基、置換基を有していてもよい炭素原子数5ないし10のシクロアルキル基、置換基を有していてもよい炭素原子数2ないし6の直鎖状もしくは分岐状のアルケニル基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキルオキシ基、置換基を有していてもよい炭素原子数5ないし10のシクロアルキルオキシ基、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基、置換もしくは無置換の縮合多環芳香族基または置換もしくは無置換のアリールオキシ基であって、単結合、置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成してもよい。) - 一対の電極とその間に挟まれた少なくとも一層の有機層を有する有機エレクトロルミネッセンス素子において、前記請求項1~8に記載のアクリダン環構造を有する化合物が、少なくとも1つの有機層の構成材料として用いられてい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。
- 前記した有機層が正孔輸送層である請求項9記載の有機エレクトロルミネッセンス素子。
- 前記した有機層が電子阻止層である請求項9記載の有機エレクトロルミネッセンス素子。
- 前記した有機層が正孔注入層である請求項9記載の有機エレクトロルミネッセンス素子。
- 前記した有機層が発光層である請求項9記載の有機エレクトロルミネッセンス素子。
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| US13/701,940 US8852759B2 (en) | 2010-06-07 | 2011-06-03 | Compound having acridan ring structure, and organic electroluminescent device |
| KR1020137000312A KR20130112850A (ko) | 2010-06-07 | 2011-06-03 | 아크리단환 구조를 가지는 화합물 및 유기 일렉트로 루미네센스 소자 |
| JP2012519238A JP5850835B2 (ja) | 2010-06-07 | 2011-06-03 | アクリダン環構造を有する化合物および有機エレクトロルミネッセンス素子 |
| EP11792128.8A EP2578572A4 (en) | 2010-06-07 | 2011-06-03 | COMPOUNDS WITH ACRIDAN RING STRUCTURES AND ORGANIC ELECTROLUMINESCENT ELEMENTS |
| US14/473,025 US9818949B2 (en) | 2010-06-07 | 2014-08-29 | Compound having acridan ring structure, and organic electroluminescent device |
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| WO2012147330A1 (ja) * | 2011-04-27 | 2012-11-01 | 保土谷化学工業株式会社 | アクリダン環構造を有する化合物および有機エレクトロルミネッセンス素子 |
| JP2016166221A (ja) * | 2011-05-05 | 2016-09-15 | メルク パテント ゲーエムベーハー | 電子デバイスのための化合物 |
| US10056549B2 (en) | 2011-05-05 | 2018-08-21 | Merck Patent Gmbh | Compounds for electronic devices |
| JP2014521593A (ja) * | 2011-05-05 | 2014-08-28 | メルク パテント ゲーエムベーハー | 電子デバイスのための化合物 |
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| JPWO2013153780A1 (ja) * | 2012-04-10 | 2015-12-17 | 保土谷化学工業株式会社 | アクリダン環構造を有する化合物および有機エレクトロルミネッセンス素子 |
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| JP2014132002A (ja) * | 2012-09-03 | 2014-07-17 | Hodogaya Chem Co Ltd | インデノアクリダン環構造を有する化合物および有機エレクトロルミネッセンス素子 |
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| WO2014083785A1 (ja) * | 2012-11-30 | 2014-06-05 | 保土谷化学工業株式会社 | フェナンスロアクリダン環構造を有する化合物および有機エレクトロルミネッセンス素子 |
| KR20160091806A (ko) | 2015-01-23 | 2016-08-03 | 삼성디스플레이 주식회사 | 아민 유도체, 이를 포함하는 유기 전계 발광 소자용 재료 및 이를 사용한 유기 전계 발광 소자 |
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Also Published As
| Publication number | Publication date |
|---|---|
| US8852759B2 (en) | 2014-10-07 |
| JP5850835B2 (ja) | 2016-02-03 |
| EP2578572A4 (en) | 2013-11-20 |
| EP2578572A1 (en) | 2013-04-10 |
| TWI502048B (zh) | 2015-10-01 |
| CN102933552A (zh) | 2013-02-13 |
| US9818949B2 (en) | 2017-11-14 |
| TW201211202A (en) | 2012-03-16 |
| US20130075715A1 (en) | 2013-03-28 |
| US20150048351A1 (en) | 2015-02-19 |
| KR20130112850A (ko) | 2013-10-14 |
| JPWO2011155169A1 (ja) | 2013-08-01 |
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