WO2019059334A1 - 有機エレクトロルミネッセンス素子 - Google Patents
有機エレクトロルミネッセンス素子 Download PDFInfo
- Publication number
- WO2019059334A1 WO2019059334A1 PCT/JP2018/034990 JP2018034990W WO2019059334A1 WO 2019059334 A1 WO2019059334 A1 WO 2019059334A1 JP 2018034990 W JP2018034990 W JP 2018034990W WO 2019059334 A1 WO2019059334 A1 WO 2019059334A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- group
- substituted
- unsubstituted
- ring
- atom
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
- 0 CC1(C)C(c2c(*3)c([n](**)c4c5c(*)c(*)c(*)c4*)c5c(*)c2*)=C3c2c1cccc2 Chemical compound CC1(C)C(c2c(*3)c([n](**)c4c5c(*)c(*)c(*)c4*)c5c(*)c2*)=C3c2c1cccc2 0.000 description 3
Images
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/631—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine
- H10K85/633—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine comprising polycyclic condensed aromatic hydrocarbons as substituents on the nitrogen atom
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/06—Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
- H10K50/12—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers comprising dopants
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/14—Carrier transporting layers
- H10K50/16—Electron transporting layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/30—Coordination compounds
- H10K85/341—Transition metal complexes, e.g. Ru(II)polypyridine complexes
- H10K85/342—Transition metal complexes, e.g. Ru(II)polypyridine complexes comprising iridium
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/30—Coordination compounds
- H10K85/341—Transition metal complexes, e.g. Ru(II)polypyridine complexes
- H10K85/346—Transition metal complexes, e.g. Ru(II)polypyridine complexes comprising platinum
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/615—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/631—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/649—Aromatic compounds comprising a hetero atom
- H10K85/654—Aromatic compounds comprising a hetero atom comprising only nitrogen as heteroatom
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/649—Aromatic compounds comprising a hetero atom
- H10K85/657—Polycyclic condensed heteroaromatic hydrocarbons
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/649—Aromatic compounds comprising a hetero atom
- H10K85/657—Polycyclic condensed heteroaromatic hydrocarbons
- H10K85/6572—Polycyclic condensed heteroaromatic hydrocarbons comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/649—Aromatic compounds comprising a hetero atom
- H10K85/657—Polycyclic condensed heteroaromatic hydrocarbons
- H10K85/6574—Polycyclic condensed heteroaromatic hydrocarbons comprising only oxygen in the heteroaromatic polycondensed ring system, e.g. cumarine dyes
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/649—Aromatic compounds comprising a hetero atom
- H10K85/657—Polycyclic condensed heteroaromatic hydrocarbons
- H10K85/6576—Polycyclic condensed heteroaromatic hydrocarbons comprising only sulfur in the heteroaromatic polycondensed ring system, e.g. benzothiophene
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/18—Metal complexes
- C09K2211/185—Metal complexes of the platinum group, i.e. Os, Ir, Pt, Ru, Rh or Pd
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K2101/00—Properties of the organic materials covered by group H10K85/00
- H10K2101/10—Triplet emission
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/14—Carrier transporting layers
- H10K50/15—Hole transporting layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/14—Carrier transporting layers
- H10K50/15—Hole transporting layers
- H10K50/156—Hole transporting layers comprising a multilayered structure
Definitions
- the present invention relates to an organic electroluminescent device which is a self-light emitting device suitable for various display devices, and more specifically, to an organic electroluminescent device using a specific arylamine compound and a compound having a specific benzoazole ring structure (Hereafter, it may be called an organic EL element.).
- the organic EL element is a self-light emitting element, it has been brightly studied compared to a liquid crystal element and has excellent visibility and can be clearly displayed. Therefore, active research has been conducted.
- Eastman Kodak Company C.I. W. Tang et al. Made the organic EL device using the organic material practical by developing a laminated structure device in which various functions are shared by the respective materials. They stack phosphors capable of transporting electrons and organic substances capable of transporting holes, and inject both charges into the phosphor layer to emit light, with a voltage of 10 V or less A high luminance of 1000 cd / m 2 or more can be obtained (see, for example, Patent Document 1 and Patent Document 2).
- Non-Patent Document 3 An element utilizing light emission by thermally activated delayed fluorescence (TADF) has also been developed.
- TADF thermally activated delayed fluorescence
- the light emitting layer can also be produced by doping a charge transporting compound generally called a host material with a fluorescent compound, a phosphorescent compound, or a material that emits delayed fluorescence.
- a charge transporting compound generally called a host material with a fluorescent compound, a phosphorescent compound, or a material that emits delayed fluorescence.
- the selection of the organic material in the organic EL element has a great influence on various characteristics such as the efficiency and durability of the element. (For example, refer to Non-Patent Document 2)
- the organic EL element charges injected from both electrodes are recombined in the light emitting layer to obtain light emission.
- efficient transfer of both charges of holes and electrons to the light emitting layer balance of both charges injected to the light emitting layer, confinement of generated excitons, etc. are important.
- the electron blocking property of the hole transport layer is enhanced by enhancing the hole injection property from the hole transport layer to the light emitting layer and preventing the leakage of electrons from the light emitting layer to the hole transport layer, the holes in the light emitting layer The probability of electron recombination improves, and excitons can be generated efficiently.
- high luminous efficiency can be obtained by enclosing the excitons generated in the light emitting layer in the light emitting layer without leaking to the transport layer. Therefore, the role played by the hole transport material is important, and a hole transport material with high hole injection property, high hole mobility, high electron blocking property, and high electron resistance is required. ing.
- the heat resistance and the amorphous property of the material are also important with respect to the lifetime of the element.
- the heat generated at the time of device operation causes thermal decomposition even at low temperatures, and the materials deteriorate.
- crystallization of a thin film occurs even for a short time, and the device is degraded. Therefore, the material to be used is required to have high heat resistance and good amorphousness.
- NPD N, N'-diphenyl-N, N'-di ( ⁇ -naphthyl) benzidine (NPD) and various aromatic amine derivatives are known as hole transport materials that have been used in organic EL devices so far.
- NPD has good hole transportability
- its glass transition point (Tg) which is an indicator of heat resistance
- Tg glass transition point
- arylamine compounds having a substituted carbazole structure have been proposed as compounds having improved properties such as heat resistance and hole injection properties (see, for example, Patent Document 4 and Patent Document 5), these compounds are subjected to hole injection.
- the heat resistance and the light emission efficiency are improved, it is not sufficient yet, and a further reduction in drive voltage and a further increase in light emission efficiency are required. .
- the physical characteristics that the organic EL device to be provided by the present invention should have include (1) high luminous efficiency and high power efficiency, (2) low luminous initiation voltage, and (3) practical driving voltage. It can be mentioned that it is low, in particular (4) long life.
- arylamine materials have excellent hole injection / transport ability, thin film stability and durability, and heterocyclic compounds having a fused ring structure. It paid attention to the fact that the luminous efficiency of By selecting a specific arylamine compound and a heterocyclic compound having a fused ring structure having a specific structure, it is possible to inject and transport the success to the light emitting layer efficiently, and the carrier balance matched to the characteristics of the material of the light emitting layer As can be obtained, various organic EL devices in which the hole transport material and the material of the light emitting layer were combined were manufactured, and the characteristics of the device were carefully evaluated.
- the electron to the light emitting layer Of various organic EL devices combining the hole transport material, the material of the light emitting layer and the electron transporting material so as to enhance the injection and transport efficiency of the carrier and to further match the carrier balance to the characteristics of the material of the light emitting layer. I made an evaluation carefully. As a result, the present invention was completed.
- the following organic EL element is provided.
- the hole transport layer contains an arylamine compound represented by the following general formula (1)
- the light emitting layer contains a heterocyclic compound having a fused ring structure represented by the following general formula (2) or a heterocyclic compound having a fused ring structure represented by the following general formula (3):
- Ar 1 to Ar 5 may be the same as or different from each other, and are substituted or unsubstituted aromatic hydrocarbon groups, substituted or unsubstituted aromatic heterocyclic groups, or substituted or unsubstituted fused polycyclic rings.
- Ar 6 to Ar 8 may be the same as or different from each other, and are a hydrogen atom, a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted aromatic heterocyclic group; Represents a substituted fused polycyclic aromatic group, n 1 represents 0, 1 or 2.
- Ar 3 and Ar 4 may form a ring with a single bond, and may be a substituted or unsubstituted methylene group
- Ar 3 or Ar 4 may form a ring by a single bond with a benzene ring to which an Ar 3 Ar 4 -N group is bonded, to form a ring by bonding to each other through an oxygen atom or a sulfur atom. May be substituted or unsubstituted methyl Down group, an oxygen atom or a sulfur atom may be bonded to each other to form a ring via.
- a 1 represents a substituted or unsubstituted aromatic hydrocarbon divalent group, a substituted or unsubstituted aromatic heterocyclic divalent group, a substituted or unsubstituted fused polycyclic aromatic divalent group
- Ar 9 represents a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted fused polycyclic aromatic group
- R 1 to R 4 may be the same as or different from each other, and a hydrogen atom, a deuterium atom, a fluorine atom, a chlorine atom, a cyano group, a nitro group, a linear or branched chain having 1 to 6 carbon atoms which may have a substituent, A branched alkyl group, an optionally substituted cycloalkyl group having 5 to 10 carbon atoms, an optionally substituted linear or branched alkenyl having 2 to 6 carbon atoms Group
- R 1 to R 4 may be combined with each other to form a ring, R 1 to R 4 may be a benzene ring to which R 1 to R 4 is bonded, a substituted or unsubstituted methylene group, an oxygen atom, a sulfur atom, or a monomer
- R 5 to R 8 may be the same or different from each other via a linking group of a reelamino group, and R 5 to R 8 may be the same or different, and a hydrogen atom, a deuterium atom, a fluorine atom, a chlorine atom, cyano Group, a nitro group, a linear or branched alkyl group having 1 to 6 carbon atoms which may have a substituent, a cycloalkyl having 5 to 10 carbon atoms which may have a substituent Or C 2 -C 6 linear or branched alkenyl group which may have a substituent, C 1-C 6 linear or branched chain which may have a substituent An alky
- Each group of R 5 to R 8 may form a ring by a single bond, or may be bonded to each other through a substituted or unsubstituted methylene group, an oxygen atom or a sulfur atom to form a ring.
- R 5 to R 8 are bonded to each other via a linking group of a benzene ring to which R 5 to R 8 is bonded and a substituted or unsubstituted methylene group, an oxygen atom, a sulfur atom, or a monoarylamino group It may form a ring.
- R 9 and R 10 may be the same as or different from each other, and may have a substituent and may be a linear or branched alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon A group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted fused polycyclic aromatic group.
- Each group of R 9 and R 10 may form a ring with a single bond, or may be combined with each other through a substituted or unsubstituted methylene group, an oxygen atom, or a sulfur atom to form a ring .
- a 2 represents a substituted or unsubstituted aromatic hydrocarbon divalent group, a substituted or unsubstituted aromatic heterocyclic divalent group, a substituted or unsubstituted fused polycyclic aromatic divalent group
- Ar 10 represents a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted fused polycyclic aromatic group
- R 11 to R 14 may be the same as or different from each other, and a hydrogen atom, a deuterium atom, a fluorine atom, a chlorine atom, a cyano group, a nitro group, a linear or branched chain having 1 to 6 carbon atoms which may have a substituent, A branched alkyl group, an optionally substituted cycloalkyl group having 5 to 10 carbon atoms, an optionally substituted linear or branched alkenyl having 2 to 6 carbon atoms Group
- Each group of R 15 to R 18 may form a ring by a single bond, or may be bonded to each other via a substituted or unsubstituted methylene group, an oxygen atom or a sulfur atom to form a ring.
- R 15 ⁇ R 18 is a benzene ring which R 15 ⁇ R 18 are attached, a substituted or unsubstituted methylene group, an oxygen atom, a sulfur atom, bonded to each other through a linking group of the mono-arylamino group ring May be formed.
- Ar 1 to Ar 5 may be the same as or different from each other, and are substituted or unsubstituted aromatic hydrocarbon groups, substituted or unsubstituted aromatic heterocyclic groups, or substituted or unsubstituted fused polycyclic rings.
- Ar 6 to Ar 8 may be the same as or different from each other, and are a hydrogen atom, a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted aromatic heterocyclic group; Represents a substituted fused polycyclic aromatic group, n 1 represents 0, 1 or 2.
- Ar 3 and Ar 4 may form a ring with a single bond, and may be a substituted or unsubstituted methylene group, Ar 3 or Ar 4 may form a ring by a single bond with a benzene ring to which an Ar 3 Ar 4 -N group is bonded, to form a ring through an oxygen atom or a sulfur atom. May be substituted or unsubstituted. Ren group, an oxygen atom or a sulfur atom may be bonded to each other to form a ring via.)
- the hole transport layer has a two-layer structure of a first hole transport layer and a second hole transport layer, and the second hole transport layer, or the first hole transport layer and the light emitting layer.
- Ar 11 represents a substituted or unsubstituted aromatic hydrocarbon group or a substituted or unsubstituted fused polycyclic aromatic group.
- Ar 12 and Ar 13 may be the same or different, and a hydrogen atom R 14 represents a substituted or unsubstituted aromatic hydrocarbon group or a substituted or unsubstituted fused polycyclic aromatic group
- Ar 14 represents a substituted or unsubstituted aromatic heterocyclic group
- R 19 to R 22 are The same or different hydrogen atom, deuterium atom, fluorine atom, chlorine atom, cyano group, trifluoromethyl group, linear or branched alkyl group having 1 to 6 carbon atoms
- the organic EL device of the present invention selects a specific arylamine compound that can effectively exhibit the role of injection / transport of holes, and selects a heterocyclic compound having a specific fused ring structure, thereby forming a light emitting layer. Holes can be efficiently injected and transported, and an organic EL device having high luminous efficiency, low driving voltage, and long life can be realized. In addition, it is combined with a specific electron transport material so that the carrier balance matched to the characteristics of the heterocyclic compound having a specific fused ring structure can be obtained, and an organic EL device with high efficiency and low driving voltage, in particular a long lifetime is realized. can do.
- the hole transport layer has a two-layer structure of the first hole transport layer and the second hole transport layer
- the two types of arylamine compounds having the characteristic structure are considered in consideration of the carrier balance and the characteristics of the material.
- the luminous efficiency, the driving voltage, and the durability of the conventional organic EL element can be improved.
- FIG. 1 is a view showing Compound 1-1 to Compound 1-15 which are arylamine compounds represented by General Formula (1) of the present invention.
- FIG. 2 is a view showing Compounds 1-16 to 1-30, which are arylamine compounds represented by General Formula (1) of the present invention.
- FIG. 2 is a view showing Compound 1-31 to Compound 1-44, which are arylamine compounds represented by General Formula (1) of the present invention.
- FIG. 2 is a view showing Compound 2-1 to Compound 2-15 which are heterocyclic compounds having a fused ring structure represented by General Formula (2) of the present invention.
- FIG. 7 is a view showing Compound 3-1 to Compound 3-15, which are heterocyclic compounds having a fused ring structure represented by General Formula (3) of the present invention.
- FIG. 5 is a view showing compounds 3-16 to 3-23, which are heterocyclic compounds having a fused ring structure represented by General Formula (3) of the present invention.
- FIG. 7 is a view showing Compound 4-1 to Compound 4-15, which are pyrimidine ring compounds represented by General Formula (4) of the present invention.
- FIG. 7 is a view showing Compounds 4-16 to 4-30, which are pyrimidine ring compounds represented by General Formula (4) of the present invention.
- FIG. 7 is a view showing Compound 4-31 to Compound 4-45, which are pyrimidine ring compounds represented by General Formula (4) of the present invention.
- FIG. 7 is a view showing Compound 4-46 to Compound 4-60, which are pyrimidine ring compounds represented by General Formula (4) of the present invention.
- FIG. 6 is a view showing Compound 4-61 to Compound 4-75 which are pyrimidine ring compounds represented by General Formula (4) of the present invention.
- FIG. 7 is a view showing Compound 4-76 to Compound 4-90, which are pyrimidine ring compounds represented by General Formula (4) of the present invention.
- FIG. 7 is a view showing Compound 4-91 to Compound 4-105, which are pyrimidine ring compounds represented by General Formula (4) of the present invention.
- FIG. 5 is a view showing Compound 4-106 to Compound 4-117 which are pyrimidine ring compounds represented by General Formula (4) of the present invention.
- FIG. 5 is a view showing Compound 4-118 to Compound 4-126, which are pyrimidine ring compounds represented by General Formula (4) of the present invention. It is the figure which showed the organic EL element structure of Examples 8-13 and Comparative Examples 1-4.
- “Substituted or unsubstituted aromatic hydrocarbon group”, “substituted or unsubstituted aromatic heterocyclic group” represented by Ar 1 to Ar 8 in the general formulas (1) and (1a), or “substituted or unsubstituted Specific examples of the "aromatic hydrocarbon group”, “aromatic heterocyclic group” or “fused polycyclic aromatic group” in the substituted fused polycyclic aromatic group include phenyl group, biphenylyl group, terphenylyl group, Naphthyl group, anthracenyl group, phenanthrenyl group, fluorenyl group, indenyl group, pyrenyl group, perylenyl group, fluoranthenyl group, triphenylenyl group, pyridyl group, pyrimidinyl group, triazinyl group, furyl group, pyrrolyl group, thienyl group, quinolyl group, Isoquinolyl group
- Ar 3 and Ar 4 may form a ring with a single bond, or may form a ring by being bonded to each other via a substituted or unsubstituted methylene group, an oxygen atom, or a sulfur atom.
- Ar 3 or Ar 4 may form a ring as a single bond with a benzene ring to which an Ar 3 Ar 4 -N group is bonded, and may be a substituted or unsubstituted methylene group, an oxygen atom or a sulfur atom They may be combined with each other to form a ring.
- Specific examples of the “group” include a deuterium atom, a cyano group, a nitro group; a halogen atom such as a fluorine atom, a chlorine atom, a bromine atom and an iodine atom; a methyl group, an ethyl group, an n-propyl group, an isopropyl group, n -C1-C6 linear or branched alkyl group such as -butyl group, isobutyl group, tert-butyl group, n-pentyl group, isopentyl group, neopentyl group, n-hexyl group; methyloxy group, A linear or branched alkyloxy group having 1 to 6 carbon
- substituents may be further substituted by the substituents exemplified above. You may In addition, these substituents may form a ring by a single bond, or may form a ring by bonding through a substituted or unsubstituted methylene group, an oxygen atom, or a sulfur atom.
- Specific examples of the "aromatic hydrocarbon", “aromatic heterocycle” or “fused polycyclic aromatic” include benzene, biphenyl, terphenyl, tetrakisphenyl, styrene, naphthalene, anthracene, acenaphthalene, fluorene, phenanthrene , Indane, pyrene, triphenylene, pyridine, pyrimidine,
- a divalent group of a substituted or unsubstituted aromatic hydrocarbon “a divalent group of a substituted or unsubstituted aromatic heterocyclic ring” or “substituted or unsubstituted aromatic hydrocarbon represented by A 1 in the general formula (2)”
- the unsubstituted fused polycyclic aromatic divalent group is obtained by removing two hydrogen atoms from the above “aromatic hydrocarbon", “aromatic heterocycle” or "fused polycyclic aromatic”. Represent.
- these divalent groups may have a substituent, and as the substituent, “substituted aromatic hydrocarbon group” represented by Ar 1 to Ar 8 in the general formulas (1) and (1a), Mention may be made of the same ones as described for "substituent” in “substituted aromatic heterocyclic group” or “substituted fused polycyclic aromatic group", and the same may be mentioned as possible modes. .
- these groups may have a substituent, and as a substituent, “substituted aromatic hydrocarbon group” represented by Ar 1 to Ar 8 in the general formulas (1) and (1a), “substituted”
- substituted aromatic hydrocarbon group represented by Ar 1 to Ar 8 in the general formulas (1) and (1a
- substituted The same groups as those described with respect to the “substituent” in the “aromatic heterocyclic group” or the “substituted fused polycyclic aromatic group” can be exemplified, and the same can also be exemplified as a possible aspect.
- C1-C6 linear or branched alkyl group optionally having substituent (s), which may be substituted represented by R 1 to R 8 in the general formula (2), “having a substituent” C 1 -C 10 cycloalkyl group which may be substituted or substituted by “C 5 -C 10 cycloalkyl group” or “C 2 -C 6 linear or branched alkenyl group which may have a substituent (s)”
- the linear or branched alkyl group of 6 are specifically mentioned , Methyl 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, cycl
- the rings may be bonded to each other through a linking group such as a substituted or unsubstituted methylene group, an oxygen atom, a sulfur atom, or a monoarylamino group with a directly bonded benzene ring.
- a linking group such as a substituted or unsubstituted methylene group, an oxygen atom, a sulfur atom, or a monoarylamino group with a directly bonded benzene ring.
- C1-C6 linear or branched alkyl group having a substituent which is represented by R 1 to R 8 in the general formula (2),“ c-5 to 10 carbon atom having a substituent ”
- substituents include deuterium atom, cyano group, nitro group; A halogen atom such as fluorine atom, chlorine atom, bromine atom and iodine atom; a linear or branched alkyloxy group having 1 to 6 carbon atoms such as methyloxy group, ethyloxy group and propyloxy group; vinyl group, allyl group
- An alkenyl group such as a phenyl group, an aryloxy group such as a tolyloxy group, an arylalkyloxy group such as a benzyloxy group or a phenethyloxy group;
- methyloxy group, ethyloxy group, n-propyloxy group isopropyloxy group, n-butyloxy group, tert-butyloxy group, n-pentyloxy group, n-hexyloxy group, cyclopentyloxy group , Cyclohexyloxy group, cycloheptyloxy group, cyclooctyloxy group, 1-adamantyloxy group, 2-adamantyloxy group Etc.
- These groups may form a ring by a single bond, or may be bonded to each other via a substituted or unsubstituted methylene group, an oxygen atom or a sulfur atom to form a ring, and these groups (R 1 in the benzene ring ⁇ R 8) and these groups (R 1 ⁇ R 8) is directly bonded, a substituted or unsubstituted methylene group, an oxygen atom, a linking group such as a sulfur atom or mono-arylamino group, You may combine with each other to form a ring.
- these groups may have a substituent, and as the substituent, “a linear group having 1 to 6 carbon atoms having a substituent, represented by R 1 to R 8 in the general formula (2) Or “branched alkyl group”, “substituted cycloalkyl group having 5 to 10 carbon atoms”, or “substituted linear substituted or branched alkenyl group having 2 to 6 carbon atoms” in “substituted” The same thing can be mentioned as what was shown regarding "group", and the aspect which can take can mention the same thing.
- Substituted or unsubstituted aromatic hydrocarbon group “substituted or unsubstituted aromatic heterocyclic group” represented by R 1 to R 8 in the general formula (2), or “substituted or unsubstituted fused multiple ring”
- Ar 1 to Ar 8 in the general formulas (1) and (1a) can be used.
- Aromamatic hydrocarbon group in “substituted or unsubstituted aromatic hydrocarbon group”, “substituted or unsubstituted aromatic heterocyclic group” or “substituted or unsubstituted fused polycyclic aromatic group” And the same as those described for “aromatic heterocyclic group” or "fused polycyclic aromatic group”.
- These groups may form a ring by a single bond, or may be bonded to each other via a substituted or unsubstituted methylene group, an oxygen atom or a sulfur atom to form a ring, and these groups (R 1 in the benzene ring ⁇ R 8) and these groups (R 1 ⁇ R 8) is directly bonded, a substituted or unsubstituted methylene group, an oxygen atom, a linking group such as a sulfur atom or mono-arylamino group, You may combine with each other to form a ring.
- these groups may have a substituent, and as a substituent, “substituted aromatic hydrocarbon group” represented by Ar 1 to Ar 8 in the general formulas (1) and (1a), “substituted”
- substituted aromatic hydrocarbon group represented by Ar 1 to Ar 8 in the general formulas (1) and (1a
- substituted The same groups as those described with respect to the “substituent” in the “aromatic heterocyclic group” or the “substituted fused polycyclic aromatic group” can be exemplified, and the same can also be exemplified as a possible aspect.
- aryloxy group in the "substituted or unsubstituted aryloxy group” represented by R 1 to R 8 in the general formula (2) include a phenyloxy group, a biphenylyloxy group and a terphenyl group.
- Examples include ryloxy, naphthyloxy, anthracenyloxy, phenanthrenyloxy, fluorenyloxy, indenyloxy, pyrenyloxy, perylenyloxy and the like.
- These groups may form a ring by a single bond, or may be bonded to each other via a substituted or unsubstituted methylene group, an oxygen atom or a sulfur atom to form a ring, and these groups (R 1 in the benzene ring ⁇ R 8) and these groups (R 1 ⁇ R 8) is directly bonded, a substituted or unsubstituted methylene group, an oxygen atom, a linking group such as a sulfur atom or mono-arylamino group, You may combine with each other to form a ring.
- these groups may have a substituent, and as a substituent, “substituted aromatic hydrocarbon group” represented by Ar 1 to Ar 8 in the general formulas (1) and (1a), “substituted”
- substituted aromatic hydrocarbon group represented by Ar 1 to Ar 8 in the general formulas (1) and (1a
- substituted The same groups as those described with respect to the “substituent” in the “aromatic heterocyclic group” or the “substituted fused polycyclic aromatic group” can be exemplified, and the same can also be exemplified as a possible aspect.
- the aromatic hydrocarbon group the “aromatic heterocyclic group” or the “fused polycyclic aromatic group”, “substituted or non-substituted one represented by Ar 1 to Ar 8 in the general formulas (1) and (1a) "Aromatic hydrocarbon group” in "substituted aromatic hydrocarbon group", "substituted or unsubstituted aromatic heterocyclic group” or “substituted or unsubstituted fused polycyclic aromatic group", "aromatic heterocyclic group” And the same as those described for "fused polycyclic aromatic group".
- these groups may have a substituent, and as a substituent, “substituted aromatic hydrocarbon group” represented by Ar 1 to Ar 8 in the general formulas (1) and (1a), “substituted”
- substituted aromatic hydrocarbon group represented by Ar 1 to Ar 8 in the general formulas (1) and (1a
- substituted The same groups as those described with respect to the “substituent” in the “aromatic heterocyclic group” or the “substituted fused polycyclic aromatic group” can be exemplified, and the same can also be exemplified as a possible aspect.
- the “disubstituted amino group substituted by a group selected from an aromatic hydrocarbon group, an aromatic heterocyclic group or a fused polycyclic aromatic group” represented by R 1 to R 8 in the general formula (2) is The “aromatic hydrocarbon group”, the “aromatic heterocyclic group” or the “fused polycyclic aromatic group” which these groups (R 1 to R 8 ) have among these groups (R 1 to R 8 )
- the ring may be formed by a single bond, or may be bonded to each other via a substituted or unsubstituted methylene group, an oxygen atom or a sulfur atom to form a ring, and these groups (R 1 to R 8 ) and a benzene ring to which these groups (R 1 to R 8 ) are directly bonded, and “aromatic hydrocarbon group” that these groups (R 1 to R 8 ) have, “aromatic heterocyclic group” Or a “fused polycyclic aromatic group” while substituted or unsubstituted
- these groups may have a substituent, and as the substituent, “a linear group having 1 to 6 carbon atoms having a substituent, represented by R 1 to R 8 in the general formula (2) Or “a branched alkyl group”, “a substituted cycloalkyl group having 5 to 10 carbon atoms” or “a substituted linear or branched alkenyl group having 2 to 6 carbon atoms” in “substituted”
- a linear group having 1 to 6 carbon atoms having a substituent represented by R 1 to R 8 in the general formula (2)
- a branched alkyl group a substituted cycloalkyl group having 5 to 10 carbon atoms” or “a substituted linear or branched alkenyl group having 2 to 6 carbon atoms” in “substituted”
- Substituted or unsubstituted aromatic hydrocarbon group “substituted or unsubstituted aromatic heterocyclic group” represented by R 9 and R 10 in the general formula (2), or “substituted or unsubstituted condensed poly
- Ar 1 to Ar 8 in the general formulas (1) and (1a) can be used.
- Aromatic hydrocarbon group in “substituted or unsubstituted aromatic hydrocarbon group”, “substituted or unsubstituted aromatic heterocyclic group” or “substituted or unsubstituted fused polycyclic aromatic group” And the same as those described for "aromatic heterocyclic group” or "fused polycyclic aromatic group”. These groups may form a ring by a single bond, or may bond to each other via a substituted or unsubstituted methylene group, an oxygen atom or a sulfur atom to form a ring.
- these groups may have a substituent, and as a substituent, “substituted aromatic hydrocarbon group” represented by Ar 1 to Ar 8 in the general formulas (1) and (1a), “substituted”
- substituted aromatic hydrocarbon group represented by Ar 1 to Ar 8 in the general formulas (1) and (1a
- substituted The same groups as those described with respect to the “substituent” in the “aromatic heterocyclic group” or the “substituted fused polycyclic aromatic group” can be exemplified, and the same can also be exemplified as a possible aspect.
- Examples of the “aryl group” in the linking group “monoarylamino group” in the general formula (2) include “substituted or unsubstituted aromatics represented by Ar 1 to Ar 8 in the general formulas (1) and (1a) “Aromatic hydrocarbon group”, “aromatic heterocyclic group” or “aromatic hydrocarbon group” in “substituted or unsubstituted aromatic heterocyclic group” or “substituted or unsubstituted fused polycyclic aromatic group” The same as those described for the fused polycyclic aromatic group "can be mentioned.
- these groups may have a substituent, and as the substituent, “substituted aromatic hydrocarbon group” represented by Ar 1 to Ar 8 in the general formulas (1) and (1a), “substituted aromatic”
- substituted aromatic hydrocarbon group represented by Ar 1 to Ar 8 in the general formulas (1) and (1a
- substituted aromatic The same groups as those described with regard to the “substituent” in the “group heterocyclic group” or the “substituted fused polycyclic aromatic group” can be mentioned, and the same can be mentioned as possible modes.
- the substituted fused polycyclic aromatic divalent group is a “substituted or unsubstituted aromatic hydrocarbon divalent group” represented by A 1 in the general formula (2), “substituted or unsubstituted The same as those described with regard to the divalent group of the aromatic heterocyclic ring of the above or the "divalent group of the substituted or unsubstituted fused polycyclic aromatic group” can be exemplified, and the possible embodiments are also the same. You can raise it.
- Substituted or unsubstituted aromatic hydrocarbon group “substituted or unsubstituted aromatic heterocyclic group” represented by Ar 10 in the general formula (3), or “substituted or unsubstituted fused polycyclic aromatic group
- substituted or unsubstituted aromatic hydrocarbon group “substituted or unsubstituted aromatic heterocyclic group” or “substituted or unsubstituted aromatic hydrocarbon group” represented by Ar 9 in the general formula (2)
- the same groups as those described for the “fused polycyclic aromatic group” can be mentioned, and the same can be mentioned as possible embodiments.
- C1-C6 linear or branched alkyl group optionally having substituent (s), which may be substituted represented by R 11 to R 18 in the general formula (3), “having a substituent”
- R 11 to R 18 “having a substituent”
- substituents As the "optionally substituted cycloalkyl group having 5 to 10 carbon atoms” or the “optionally substituted linear or branched alkenyl group having 2 to 6 carbon atoms”, a compound represented by the general formula (2
- R 1 to R 8 each represent “a C1-C6 linear or branched alkyl group which may have a substituent,” an “optionally having a substituent Examples similar to those described with regard to a C5-C10 cycloalkyl group or a "C2-C6 linear or branched alkenyl group optionally having substituent (s)” may be mentioned The possible modes are the same. That.
- a linear or branched alkyloxy group having 1 to 6 carbon atoms which may have a substituent represented by R 11 to R 18 in the general formula (3), or “having a substituent”
- R 11 to R 18 in the general formula (3)
- R 1 to R 8 As the optionally substituted cycloalkyloxy group having 5 to 10 carbon atoms, one or more carbon atoms which may have a substituent, represented by R 1 to R 8 in the general formula (2)
- To 6 straight-chain or branched alkyloxy groups "or" C5-C10 cycloalkyloxy group which may have a substituent (s) may be the same as those described above. The same can be mentioned as possible modes.
- Substituted or unsubstituted aromatic hydrocarbon group “substituted or unsubstituted aromatic heterocyclic group” represented by R 11 to R 18 in the general formula (3), or “substituted or unsubstituted fused multiple ring”
- ring aromatic group “substituted or unsubstituted aromatic hydrocarbon group” represented by R 1 to R 8 in the general formula (2), “substituted or unsubstituted aromatic heterocyclic group” or The same groups as those described for the “substituted or unsubstituted fused polycyclic aromatic group” can be mentioned, and the same can be mentioned as possible embodiments.
- Examples of the “substituted or unsubstituted aryloxy group” represented by R 11 to R 18 in the general formula (3) include “substituted or unsubstituted aryl groups represented by R 1 to R 8 in the general formula (2) The same thing can be mentioned as what was shown regarding "an aryloxy group" of, and the aspect which can take can mention the same thing.
- Examples of the "aryl group” in the linking group “monoarylamino group” in the general formula (3) include the same as those described for the linking group “monoarylamino group” in the general formula (2). The same can be mentioned as possible embodiments.
- these groups may have a substituent, and as the substituent, “substituted aromatic hydrocarbon group” represented by Ar 1 to Ar 8 in the general formulas (1) and (1a), “ The same groups as those described with respect to the “substituent” in the “substituted aromatic heterocyclic group” or the “substituted fused polycyclic aromatic group” can be mentioned, and the same can also be mentioned as possible modes.
- aromatic heterocyclic group in the “substituted or unsubstituted aromatic heterocyclic group” represented by Ar 14 in the general formula (4) include a triazinyl group, a pyridyl group and a pyrimidinyl group, Furyl group, pyrrolyl group, thienyl group, quinolyl group, isoquinolyl group, benzofuranyl group, benzothienyl group, indolyl group, carbazolyl group, benzoxazolyl group, benzothiazolyl group, quinoxalinyl group, benzoimidazolyl group, pyrazolyl group, dibenzofuranyl group And dibenzothienyl group, naphthyridinyl group, phenanthrolinyl group, acridinyl group, carborinyl group and the like.
- these groups may have a substituent, and as the substituent, “substituted aromatic hydrocarbon group” represented by Ar 1 to Ar 8 in the general formulas (1) and (1a), “ The same groups as those described with respect to the “substituent” in the “substituted aromatic heterocyclic group” or the “substituted fused polycyclic aromatic group” can be mentioned, and the same can also be mentioned as possible modes.
- linear or branched alkyl group having 1 to 6 carbon atoms represented by R 19 to R 22 in the general formula (4) include a methyl group, an ethyl group and an n- group.
- Propyl, i-propyl, n-butyl, 2-methylpropyl, t-butyl, n-pentyl, 3-methylbutyl, tert-pentyl, n-hexyl, iso-hexyl and tert -A hexyl group can be mentioned.
- Specific examples of the "aromatic hydrocarbon group", “aromatic heterocyclic group” or “fused polycyclic aromatic group” in the polycyclic aromatic group include phenyl group, biphenylyl group, terphenylyl group, tetrakisphenyl group , Styryl group, naphthyl group, anthracenyl group, acenaphthenyl group, phenanthrenyl group, fluorenyl group, indenyl group, pyrenyl group, perylenyl group, fluoranthenyl group, triphenylenyl group, triazinyl group, pyridyl group, pyrimidinyl group, furyl group, pyrrol
- these groups may have a substituent, and as the substituent, “substituted aromatic hydrocarbon group” represented by Ar 1 to Ar 8 in the general formulas (1) and (1a), “ The same groups as those described with respect to the “substituent” in the “substituted aromatic heterocyclic group” or the “substituted fused polycyclic aromatic group” can be mentioned, and the same can also be mentioned as possible modes.
- the “substituted aromatic hydrocarbon group”, “substituted aromatic heterocyclic group” or “substituted fused polycyclic aromatic group” represented by Ar 1 to Ar 8 is “substituted” As the “group”, a deuterium atom, a linear or branched alkyl group having 1 to 6 carbon atoms which may have a substituent, and 2 to 6 carbons which may have a substituent may be mentioned.
- Linear or branched alkenyl group “substituted or unsubstituted aromatic hydrocarbon group” or “substituted or unsubstituted fused polycyclic aromatic group” is preferable, and deuterium atom, phenyl group, biphenylyl group, A naphthyl group and a vinyl group are more preferable. Also preferred is an embodiment in which these groups are bonded to each other via a single bond to form a fused aromatic ring.
- n1 represents 0 or 1 to 2, but when n1 is 0, it indicates that two diarylaminobenzene rings are directly (single bond) bonded, When n1 is 1, it indicates that two diarylaminobenzene rings are bonded via one phenylene group, and when n1 is 2, two diarylaminobenzene rings are two phenylene groups ( It shows that it couple
- n1 is preferably 0, that is, two diarylaminobenzene rings are directly bonded (by a single bond).
- a benzene ring in which Ar 3 or Ar 4 is bonded to an Ar 3 Ar 4 -N group Ar 3 , a diarylamino group consisting of Ar 4 and a nitrogen atom to which they are bonded
- Ar 3 a diarylamino group consisting of Ar 4 and a nitrogen atom to which they are bonded
- An embodiment in which the ring is formed by a single bond, and an embodiment in which the ring is formed by bonding through a substituted or unsubstituted methylene group, an oxygen atom or a sulfur atom are also preferable.
- the bonding position in the benzene ring in this case is preferably a position adjacent to the Ar 3 Ar 4 -N group.
- a 1 in the general formula (2) “substituted or unsubstituted aromatic hydrocarbon divalent group”, “substituted or unsubstituted fused polycyclic aromatic divalent group”, or a single bond is preferable
- a bivalent group obtained by removing two hydrogen atoms from benzene, biphenyl or naphthalene, or a single bond is more preferable, and a bivalent group obtained by removing two hydrogen atoms from benzene, or a single bond is particularly preferable.
- a phenyl group, a biphenylyl group, a naphthyl group or a “aromatic heterocyclic group” is preferable, and in the “aromatic heterocyclic group”, a triazinyl group, a quinazolinyl group, a naphtho group is preferable.
- Pyrimidinyl, benzimidazolyl, pyridopyrimidinyl, naphthyridinyl, pyridyl, quinolyl and isoquinolyl groups are particularly preferred.
- two adjacent R 1 to R 4 each represent “a C 2 -C 6 linear or branched alkenyl group”, “aromatic hydrocarbon group”, “aromatic heterocyclic group Or “fused polycyclic aromatic group”, in which two adjacent groups (R 1 to R 4 ) are bonded to each other through a single bond to form a benzene ring to which R 1 to R 4 are bonded
- the aspect which forms a condensed ring is preferable.
- the “linear or branched alkenyl group having 2 to 6 carbon atoms”, the “aromatic hydrocarbon group”, the “aromatic heterocyclic group” or the “fused polycyclic aromatic group” is vinyl Preferred is a group or a phenyl group, and an embodiment in which a naphthalene ring, a phenanthrene ring or a triphenylene ring is formed together with a benzene ring to which R 1 to R 4 are bonded.
- any one of R 1 to R 4 is an “aromatic hydrocarbon group”, an “aromatic heterocyclic group” or a “fused polycyclic aromatic group”, and R 1 to R 4 Preferred is an embodiment in which a ring is formed by linking together a benzene ring to which is attached and a linking group such as a substituted or unsubstituted methylene group, an oxygen atom, a sulfur atom or a monoarylamino group.
- aromatic hydrocarbon group "aromatic heterocyclic group” or “fused polycyclic aromatic group” in this case, a phenyl group, an indenyl group, an indolyl group, a benzofuranyl group and a benzothienyl group are preferable, and R 1 is preferred.
- the aspect which forms an indolo indole ring is preferable.
- heterocyclic compounds having a fused ring structure represented by the general formula (2) an embodiment in which R 1 to R 4 combine with each other to form a ring, or R
- the following general formulas (2a), (2b), (2c), (2d) or (2d) or an embodiment in which the benzene ring to which 1 to R 4 and R 1 to R 4 are bonded is bonded to form a ring.
- the embodiment represented by (2e) is preferably used.
- R 5 to R 8 are vinyl groups, and two adjacent vinyl groups are bonded to each other via a single bond to form a condensed ring
- R 9 and R 10 in the general formula (2) “a C 1-6 linear or branched alkyl group” is preferable, and a methyl group is particularly preferable.
- substituted or unsubstituted aromatic hydrocarbon divalent group “substituted or unsubstituted fused polycyclic aromatic divalent group”, or a single bond is preferable
- a bivalent group obtained by removing two hydrogen atoms from benzene, biphenyl or naphthalene, or a single bond is more preferable, and a bivalent group obtained by removing two hydrogen atoms from benzene, or a single bond is particularly preferable.
- a phenyl group, a biphenylyl group, a naphthyl group or a “aromatic heterocyclic group” is preferable, and in the “aromatic heterocyclic group”, a triazinyl group, a quinazolinyl group, a naphtho group is preferable.
- Pyrimidinyl, benzimidazolyl, pyridopyrimidinyl, naphthyridinyl, pyridyl, quinolyl and isoquinolyl groups are particularly preferred.
- two adjacent R 11 to R 14 each represent “a linear or branched alkenyl group having 2 to 6 carbon atoms”, “aromatic hydrocarbon group”, “aromatic heterocyclic group” Or “fused polycyclic aromatic group”, in which two adjacent groups (R 11 to R 14 ) are bonded to each other through a single bond to form a benzene ring to which R 11 to R 14 is bonded
- the aspect which forms a condensed ring is preferable.
- the “linear or branched alkenyl group having 2 to 6 carbon atoms”, the “aromatic hydrocarbon group”, the “aromatic heterocyclic group” or the “fused polycyclic aromatic group” is vinyl Preferred is a group or a phenyl group, and an embodiment in which a naphthalene ring, a phenanthrene ring or a triphenylene ring is formed together with a benzene ring to which R 11 to R 14 are bonded.
- any one of R 11 to R 14 is an “aromatic hydrocarbon group”, an “aromatic heterocyclic group” or a “fused polycyclic aromatic group”, and R 11 to R 14 Preferred is an embodiment in which a ring is formed by linking together a benzene ring to which is attached, and a linking group such as a substituted or unsubstituted methylene group, an oxygen atom, a sulfur atom, or a monoarylamino group.
- the “aromatic hydrocarbon group”, “aromatic heterocyclic group” or “fused polycyclic aromatic group” is preferably a phenyl group, an indenyl group, an indolyl group, a benzofuranyl group or a benzothienyl group, and R 11 ⁇ fluorene ring with a benzene ring to which R 14 is attached, a carbazole ring, a dibenzofuran ring, a dibenzothiophene ring, indeno indole ring, indeno benzofuran ring, indenobenzothiophene ring, benzo furo indole ring, benzo thieno indole ring, The aspect which forms an indolo indole ring is preferable.
- X represents a substituted or unsubstituted methylene group, an oxygen atom, a sulfur atom, or a monoarylamino group
- Ar 10 and R 11 to R 18 have the meanings as shown in the general formula (3).
- X represents a substituted or unsubstituted methylene group, an oxygen atom, a sulfur atom, or a monoarylamino group
- Ar 10 and R 11 to R 18 have the meanings as shown in the general formula (3).
- X represents a substituted or unsubstituted methylene group, an oxygen atom, a sulfur atom, or a monoarylamino group
- Ar 10 and R 11 to R 18 have the meanings as shown in the general formula (3).
- X represents a substituted or unsubstituted methylene group, an oxygen atom, a sulfur atom, or a monoarylamino group
- Ar 10 and R 11 to R 18 have the meanings as shown in the general formula (3).
- X represents a substituted or unsubstituted methylene group, an oxygen atom, a sulfur atom, or a monoarylamino group
- Ar 10 and R 11 to R 18 have the meanings as shown in the general formula (3).
- R 15 to R 18 are vinyl groups, and two adjacent vinyl groups are bonded to each other via a single bond to form a condensed ring
- any one of R 15 to R 18 is an “aromatic hydrocarbon group”, an “aromatic heterocyclic group” or a “condensed polycyclic aromatic group” is also preferable.
- R 15 to R 18 is a group selected from a fluorenyl group, a carbazolyl group, a dibenzofuranyl group or a dibenzothienyl group, and R 16 is a fluorenyl group, a carbazolyl group, a dibenzofuranyl group, It is more preferable that R 15 , R 17 and R 18 be a hydrogen atom.
- a phenyl group, a biphenylyl group, a naphthyl group, an anthracenyl group, a phenanthrenyl group, a pyrenyl group, a fluoranthenyl group and a triphenylenyl group are more preferable.
- the phenyl group preferably has a substituted or non-substituted fused polycyclic aromatic group as a substituent, and is selected from a naphthyl group, an anthracenyl group, a phenanthrenyl group, a pyrenyl group, a fluoranthenyl group and a triphenylenyl group. It is more preferable to have a substituted substituent.
- a phenyl group having a substituent is preferable, and as the substituent in this case, an aromatic hydrocarbon group such as phenyl group, biphenylyl group, terphenyl group, naphthyl group, anthracenyl group And fused polycyclic aromatic groups such as acenaphthenyl group, phenanthrenyl group, fluorenyl group, indenyl group, pyrenyl group, perylenyl group, fluoranthenyl group and triphenylenyl group are preferable, and phenyl group, naphthyl group, anthracenyl group, phenanthrenyl group, Pyrenyl group, fluoranthenyl group and triphenylenyl group are more preferable.
- an aromatic hydrocarbon group such as phenyl group, biphenylyl group, terphenyl group, naphthyl group, anthracenyl group
- fused polycyclic aromatic groups such as
- a phenyl group having a substituent is preferable, and as the substituent in this case, an aromatic hydrocarbon group such as phenyl group, biphenylyl group, terphenyl group, naphthyl group, anthracenyl group And fused polycyclic aromatic groups such as acenaphthenyl group, phenanthrenyl group, fluorenyl group, indenyl group, pyrenyl group, perylenyl group, fluoranthenyl group and triphenylenyl group are preferable, and phenyl group, naphthyl group, anthracenyl group, phenanthrenyl group, Pyrenyl group, fluoranthenyl group and triphenylenyl group are more preferable.
- an aromatic hydrocarbon group such as phenyl group, biphenylyl group, terphenyl group, naphthyl group, anthracenyl group
- fused polycyclic aromatic groups such as
- Ar 11 and Ar 12 are not the same.
- Ar 11 and Ar 12 may be different substituents, or may be different substitution positions.
- Ar 12 and Ar 13 may be the same group, but there is a possibility that crystallization may be facilitated by improving the symmetry of the whole molecule, and from the viewpoint of thin film stability, Ar 15 And Ar 16 are preferably different groups, and it is assumed that Ar 12 and Ar 13 do not simultaneously become hydrogen atoms.
- one of Ar 12 and Ar 13 is preferably a hydrogen atom.
- the bonding position of Ar 14 in the benzene ring is preferably the meta position with respect to the bonding position with the pyrimidine ring from the viewpoint of thin film stability.
- Examples of the compound having a pyrimidine ring structure represented by the general formula (4) include compounds having a pyrimidine ring structure represented by the following general formula (4a) or general formula (4b) which are different in the binding mode of substituents .
- the arylamine compound represented by the general formula (1) or (1a), which is suitably used for the organic EL device of the present invention, is used as a constituent material of the hole injection layer or the hole transport layer of the organic EL device. It can be used. It is a compound which has a high mobility of holes and is preferable as a material of a hole injection layer or a hole transport layer. In addition, it is a compound which has high electron blocking performance and is preferable as a material of the second hole transport layer in the case where the hole transport layer has a two-layer structure of a first hole transport layer and a second hole transport layer.
- the compound having a pyrimidine ring structure which is suitably used for the organic EL device of the present invention and represented by the above general formula (4), can be used as a constituent material of the electron transport layer of the organic EL device.
- the compound having a pyrimidine ring structure represented by the above general formula (4) is excellent in electron injecting and transporting ability, is further excellent in stability and durability of a thin film, and is a compound preferable as a material of the electron transport layer .
- the organic EL device of the present invention is a conventional organic EL device because the material for an organic EL device excellent in hole injection / transport performance, thin film stability and durability is combined in consideration of carrier balance.
- arylamine compounds represented by the above general formula (1) which are suitably used for the organic EL device of the present invention, preferred examples of the compound 1-1 to the compound 1-44 are shown in FIGS. However, it is not limited to these compounds.
- heterocyclic compounds having a fused ring structure represented by the general formula (2) which are suitably used for the organic EL device of the present invention
- preferred examples of the compound 2-1 to the compound 2-15 are shown in FIG.
- the present invention is not limited to these compounds.
- heterocyclic compounds having the fused ring structure represented by the general formula (3) which are suitably used for the organic EL device of the present invention
- preferred examples of the compound 3-1 to the compound 3-23 are shown in FIG. , 6 but is not limited to these compounds.
- the heterocyclic compound having a fused ring structure described above can be synthesized according to a method known per se (see, for example, Patent Document 7).
- the compound having a pyrimidine ring structure described above can be synthesized according to a method known per se (see, for example, Patent Document 8).
- Purification of the compounds represented by the general formulas (1) and (1a) is carried out by purification by column chromatography, adsorption purification with silica gel, activated carbon, activated clay or the like, recrystallization with a solvent, crystallization method, etc. , Purification by sublimation purification, etc.
- Compound identification was performed by NMR analysis. Melting point, glass transition point (Tg) and work function were measured as physical property values. The melting point is an index of vapor deposition, the glass transition point (Tg) is an index of stability of the thin film state, and the work function is an index of hole transportability.
- the compounds used in the organic EL device of the present invention are purified by column chromatography, adsorption purification with silica gel, activated carbon, activated clay or the like, recrystallization with a solvent, recrystallization with a solvent, etc. and finally sublimation. What was purified by the purification method was used.
- the melting point and the glass transition point (Tg) were measured using a powder by a high-sensitivity differential scanning calorimeter (DSC3100SA, manufactured by Bruker AXS).
- the work function was obtained by preparing a thin film of 100 nm on an ITO substrate and using an ionization potential measurement device (PYS-202, manufactured by Sumitomo Heavy Industries, Ltd.).
- the structure of the organic EL device of the present invention comprises, in order on the substrate, an anode, a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer and a cathode, What has a hole blocking layer between electron transport layers is mentioned.
- a structure which combines a hole injection layer and a hole transport layer a structure which combines an electron injection layer and an electron transport layer It can also be done.
- the organic EL element of this invention it is also preferable to set it as the structure which 2 layer of a 1st positive hole transport layer and a 2nd positive hole transport layer laminated
- the second hole transport layer preferably has also a function as an electron blocking layer.
- an electrode material having a large work function such as ITO or gold is used.
- a starburst type triphenylamine derivative 4 amounts of various triphenylamines Materials such as a body; porphyrin compounds represented by copper phthalocyanine; acceptor heterocyclic compounds such as hexacyanoazatriphenylene and coated polymer materials can be used. These layers may be formed separately, but may be used as a single layer formed by mixing with other materials, layers formed separately, layers formed by mixing, or layers A stacked structure of a layer formed by mixing a single layer and a layer formed may be employed. These materials can be formed into a thin film by a known method such as a spin coat method or an ink jet method other than the vapor deposition method.
- materials commonly used in the layer may be P-doped with trisbromophenylaminehexachloroantimony, radialene derivative (for example, see Patent Document 6), or the like.
- a polymer compound having a structure of a benzidine derivative such as TPD in its partial structure can be used.
- TPD benzidine
- NPD N'-diphenyl-N, N'-di ( ⁇ -naphthyl) benzidine
- NPD N, N ', N'-tetrabiphenylylbenzidine
- TAPC 1-bis [4- (di-4-tolylamino)
- Arylamine compounds, arylamine compounds having a structure in which a triphenylamine structure is linked by four single bonds or hetero atoms in the molecule, a variety of triphenylamine trimers, etc. Can be used. These layers may be formed separately, but may be used as a single layer formed by mixing with other materials, layers formed separately, layers formed by mixing, or layers A stacked structure of a layer formed by mixing a single layer and a layer formed may be employed.
- a coating type polymer material such as poly (3,4-ethylenedioxythiophene) (PEDOT) / poly (styrene sulfonate) (PSS) can be used as the hole injection / transport layer.
- PEDOT poly (3,4-ethylenedioxythiophene)
- PSS poly (styrene sulfonate)
- the second hole transport layer has the above general formulas (1) and (1a).
- an arylamine compound having a structure in which four triphenylamine structures are linked in a molecule, a single bond or a hetero atom-free divalent group, a triphenylamine structure in a molecule An arylamine compound having a structure in which R 2 is a single bond or a divalent group having no hetero atom, 4, 4 ′, 4 ′ ′-tri (N-carbazolyl) triphenylamine (TCTA), 9, 9 -Bis [4- (carbazol-9-yl) phenyl] fluorene, 1,3-bis (carbazol-9-yl) benzene (mCP), 2,2-bis (4-carbazol-9-ylphenyl) Car
- These layers may be formed separately, but may be used as a single layer formed by mixing with other materials, layers formed separately, layers formed by mixing, or layers A stacked structure of a layer formed by mixing a single layer and a layer formed may be employed. These materials can be formed into a thin film by a known method such as a spin coat method or an ink jet method other than the vapor deposition method.
- the light emitting layer of the organic EL device of the present invention includes a heterocyclic compound having a fused ring structure represented by the general formula (2), and a heterocyclic compound having a fused ring structure represented by the general formula (3)
- various metal complexes such as metal complexes of quinolinol derivatives including Alq 3 , anthracene derivatives, bisstyrylbenzene derivatives, pyrene derivatives, oxazole derivatives, polyparaphenylene vinylene derivatives, and the like can be used.
- the light emitting layer may be composed of a host material and a dopant material, and as the host material, a heterocyclic compound having a fused ring structure represented by the above general formula (2), a table shown by the above general formula (3)
- a thiazole derivative, a benzimidazole derivative, a polydialkyl fluorene derivative or the like can be used in addition to the light emitting material.
- the dopant material quinacridone, coumarin, rubrene, perylene, pyrene and derivatives thereof, benzopyran derivative, indenophenanthrene derivative, rhodamine derivative, aminostyryl derivative and the like can be used.
- these layers may be formed separately, but may be used as a single layer formed by mixing with other materials, layers formed separately, layers formed by mixing, or layers A stacked structure of a layer formed by mixing a single layer and a layer formed may be employed.
- the heterocyclic compound having a fused ring structure represented by the general formula (2) or the heterocyclic compound having a fused ring structure represented by the general formula (3) It is preferable to use as a host material.
- a phosphorescence material as a light emitting material.
- a phosphorescence light emitter a phosphorescence light emitter of metal complex such as iridium and platinum can be used.
- a green phosphor such as Ir (ppy) 3
- a blue phosphor such as FIrpic or FIr 6
- a red phosphor such as Btp 2 Ir (acac), or the like may be used as the host material in this case.
- the heterocyclic compound having a fused ring structure represented by the general formula (3), 4 as a hole injecting / transporting host material
- carbazole derivatives such as 4,4'-di (N-carbazolyl) biphenyl (CBP), TCTA, mCP and the like.
- CBP 4,4'-di (N-carbazolyl) biphenyl
- TCTA TCTA
- mCP mCP
- P-Bis (triphenylsilyl) benzene (UGH2) or 2,2 ′, 2 ′ ′-(1,3,5-phenylene) -tris (1-phenyl-1H-benzimidazole) as an electron transporting host material (TPBI) etc. can be used, and a high-performance organic EL element can be produced.
- Non-Patent Document 3 a material that emits delayed fluorescence such as PICCB, such as PIC-TRZ, CC2TA, PXZ-TRZ, and 4CzIPN, as a light-emitting material.
- These materials can be formed into a thin film by a known method such as a spin coat method or an ink jet method other than the vapor deposition method.
- a phenanthroline derivative such as vasocuproin (BCP) or a quinolinol derivative such as aluminum (III) bis (2-methyl-8-quinolinate) -4-phenylphenolate (BAlq) as a hole blocking layer in the organic EL device of the present invention
- BCP vasocuproin
- BAlq aluminum (III) bis (2-methyl-8-quinolinate) -4-phenylphenolate
- various rare earth complexes, triazole derivatives, triazine derivatives, oxadiazole derivatives, and other compounds having a hole blocking function can be used. These materials may double as the material of the electron transport layer.
- These layers may be formed separately, but may be used as a single layer formed by mixing with other materials, layers formed separately, layers formed by mixing, or layers A stacked structure of a layer formed by mixing a single layer and a layer formed may be employed. These materials can be formed into a thin film by a known method such as a spin coat method or an ink jet method other than the vapor deposition method.
- a compound having a pyrimidine ring structure represented by the above general formula (4) is preferably used. Although these may be formed separately, they may be used as a single layer formed by mixing with other electron transporting materials, or layers formed separately may be formed by mixing. A layered structure of layers formed by mixing layers with each other or with a single layer may be employed. These materials can be formed into a thin film by a known method such as a spin coat method or an ink jet method other than the vapor deposition method.
- metal complexes of quinolinol derivatives including Alq 3 and BAlq including Alq 3 and BAlq, various metal complexes, and triazoles Derivatives, triazine derivatives, oxadiazole derivatives, pyridine derivatives, pyrimidine derivatives, benzimidazole derivatives, thiadiazole derivatives, anthracene derivatives, carbodiimide derivatives, quinoxaline derivatives, pyridoindole derivatives, phenanthroline derivatives, silole derivatives and the like can be mentioned.
- alkali metal salts such as lithium fluoride and cesium fluoride
- alkaline earth metal salts such as magnesium fluoride
- metal oxides such as aluminum oxide, or ytterbium (Yb)
- metals such as samarium (Sm), calcium (Ca), strontium (Sr), cesium (Cs) and the like can be used, this can be omitted in the preferred selection of the electron transport layer and the cathode.
- 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 an electrode material.
- the melting point and the glass transition point of the arylamine compound represented by the general formula (1) were measured by a high-sensitivity differential scanning calorimeter (DSC3100SA, manufactured by Bruker AXS). Melting point glass transition point Compound of Example 1 Not observed 125 ° C. Compound of Example 2 Not observed 117 ° C. Compound of Example 3 not observed 114 ° C.
- the arylamine compound represented by the general formula (1) has a glass transition point of 100 ° C. or more, which indicates that the thin film state is stable.
- the arylamine compound represented by the general formula (1) exhibits a favorable energy level as compared with the work function 5.4 eV of a general hole transport material such as NPD, TPD, etc. It can be seen that it has a hole transport capacity.
- the organic EL element is, as shown in FIG. 16, a hole injection layer 3, a hole transport layer 4, a light emitting layer 5, and an electron transport layer on a glass substrate 1 on which an ITO electrode is formed in advance as a transparent anode 2. 6, it manufactured by vapor-depositing in order of the electron injection layer 7 and the cathode (aluminum electrode) 8.
- FIG. 16 a hole injection layer 3, a hole transport layer 4, a light emitting layer 5, and an electron transport layer on a glass substrate 1 on which an ITO electrode is formed in advance as a transparent anode 2. 6, it manufactured by vapor-depositing in order of the electron injection layer 7 and the cathode (aluminum electrode) 8.
- the glass substrate 1 on which ITO having a film thickness of 150 nm was formed was subjected to ultrasonic cleaning for 20 minutes in isopropyl alcohol and then dried for 10 minutes on a hot plate heated to 200.degree. Thereafter, UV ozone treatment was carried out for 15 minutes, and then the ITO-attached glass substrate was mounted in a vacuum deposition machine, and the pressure was reduced to 0.001 Pa or less.
- the compound (1-7) of Example 1 was formed as a hole transport layer 4 so as to have a film thickness of 50 nm.
- a compound (EMD-1) of the following structural formula and a compound (2-2) of Example 10 were used as the light emitting layer 5 at a deposition rate ratio (EMD-1): (2- 2) Binary vapor deposition was performed at a vapor deposition rate of 5:95 to form a film thickness of 20 nm.
- Lithium fluoride was formed to a film thickness of 1 nm as the electron injection layer 7 on the electron transport layer 6. Finally, aluminum was deposited to 100 nm to form a cathode 8. The characteristics of the produced organic EL device were measured at room temperature in the air. Table 1 summarizes the measurement results of the light emission characteristics when a direct current voltage is applied to the manufactured organic EL element.
- Example 8 is the same as Example 8 except that the compound (1-11) of Example 2 is used instead of the compound (1-7) of Example 1 as the material of the hole injection layer 3 and the hole transport layer 4.
- the organic EL element was produced on condition. The characteristics of the produced organic EL device were measured in the air at normal temperature. Table 1 summarizes the measurement results of the light emission characteristics when a direct current voltage is applied to the manufactured organic EL element.
- Example 8 is the same as Example 8 except that the compound (1-14) of Example 3 is used instead of the compound (1-7) of Example 1 as the material of the hole injection layer 3 and the hole transport layer 4.
- the organic EL element was produced on condition. The characteristics of the produced organic EL device were measured in the air at normal temperature. Table 1 summarizes the measurement results of the light emission characteristics when a direct current voltage is applied to the manufactured organic EL element.
- Example 8 in place of the compound (2-2) of Example 6 as the material of the light emitting layer 5, the compound (3-14) of Example 7 has a deposition rate ratio (EMD-1): (3-14) Binary vapor deposition was performed at a vapor deposition rate of 5:95, and an organic EL device was manufactured under the same conditions except that the film thickness was 20 nm. The characteristics of the produced organic EL device were measured in the air at normal temperature. Table 1 summarizes the measurement results of the light emission characteristics when a direct current voltage is applied to the manufactured organic EL element.
- EMD-1 deposition rate ratio
- Example 8 the compound (1-11) of Example 2 is used as a material of the hole injection layer 3 and the hole transport layer 4 instead of the compound (1-7) of Example 1, and a light emitting layer 5
- Binary vapor deposition was carried out in the above, and an organic EL device was produced under the same conditions except that the film thickness was formed to be 20 nm. The characteristics of the produced organic EL device were measured in the air at normal temperature. Table 1 summarizes the measurement results of the light emission characteristics when a direct current voltage is applied to the manufactured organic EL element.
- Example 8 the compound (1-14) of Example 3 is used as a material of the hole injection layer 3 and the hole transport layer 4 instead of the compound (1-7) of Example 1, and a light emitting layer 5
- Binary vapor deposition was carried out in the above, and an organic EL device was produced under the same conditions except that the film thickness was formed to be 20 nm. The characteristics of the produced organic EL device were measured in the air at normal temperature. Table 1 summarizes the measurement results of the light emission characteristics when a direct current voltage is applied to the manufactured organic EL element.
- Comparative Example 1 For comparison, the compound (HTM-1) of the following structural formula was used in place of the compound (1-7) of Example 1 as the material of the hole injection layer 3 and the hole transport layer 4 in Example 8.
- the organic EL element was produced on the same conditions except the above. The characteristics of the produced organic EL device were measured at room temperature in the air. Table 1 summarizes the measurement results of the light emission characteristics when a direct current voltage is applied to the manufactured organic EL element.
- EMD-1 deposition rate ratio
- Comparative Example 3 For comparison, the compound (HTM-2) of the following structural formula was used in place of the compound (1-7) of Example 1 as the material of the hole injection layer 3 and the hole transport layer 4 in Example 8.
- the organic EL element was produced on the same conditions except the above. The characteristics of the produced organic EL device were measured at room temperature in the air. Table 1 summarizes the measurement results of the light emission characteristics when a direct current voltage is applied to the manufactured organic EL element.
- EMD-1 deposition rate ratio
- the device life was measured using the organic EL devices produced in Examples 8 to 13 and Comparative Examples 1 to 4, and the results are shown in Table 1. Element life, when the emission start time of the emission luminance (initial luminance) was driven with a constant current as 7000cd / m 2, equivalent to 97% when the emission luminance is taken as 100% of 6790cd / m 2 (initial luminance: The time to decay to 97%) was measured.
- the organic EL elements of Examples 8 to 10 greatly extend the life to 224 to 237 hours as compared with 113 to 154 hours of the organic EL elements of Comparative Examples 1 and 3. I understand that.
- the life of the organic EL devices of Examples 11 to 13 is greatly extended to 262 to 298 hours as compared with 117 to 173 hours of the organic EL devices of Comparative Examples 2 and 4. I understand that.
- the organic EL device of the present invention comprises a carrier balance inside an organic EL device by combining an arylamine compound having a specific structure and a heterocyclic compound having a specific fused ring structure (and a compound having a specific anthracene ring structure).
- a carrier balance that matches the characteristics of the light emitting material, so that it is possible to realize an organic EL device having high luminous efficiency and a long life as compared with the conventional organic EL device. I understand.
- the organic EL device according to the present invention in which a specific arylamine compound and a compound having a heterocyclic compound having a fused ring structure are combined can improve the luminous efficiency and improve the durability of the organic EL device, for example. , It became possible to expand to home appliances and lighting applications.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Optics & Photonics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Organic Chemistry (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
Description
そして、熱活性化遅延蛍光(TADF)による発光を利用する素子も開発されている。2011年に九州大学の安達らは、熱活性化遅延蛍光材料を用いた素子によって5.3%の外部量子効率を実現させた。(例えば、非特許文献3参照)
本発明によれば、従来の有機EL素子の発光効率および駆動電圧、そして耐久性を改良することができる。
ここで、Ar3とAr4は、単結合で環を形成してもよく、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。Ar3またはAr4は、Ar3Ar4-N基が結合しているベンゼン環と、単結合で環を形成してもよく、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。
そして、一般式(2)中のA1で表される「置換もしくは無置換の芳香族炭化水素の2価基」、「置換もしくは無置換の芳香族複素環の2価基」または「置換もしくは無置換の縮合多環芳香族の2価基」は、上記「芳香族炭化水素」、「芳香族複素環」または「縮合多環芳香族」から水素原子を2個取り除いてできる2価基を表す。
また、これらの2価基は置換基を有していてよく、置換基として、一般式(1)、(1a)中のAr1~Ar8で表される「置換芳香族炭化水素基」、「置換芳香族複素環基」または「置換縮合多環芳香族基」における「置換基」に関して示したものと同様のものをあげることができ、とりうる態様も、同様のものをあげることができる。
また、これらの基は置換基を有していてよく、置換基として、一般式(1)、(1a)中のAr1~Ar8で表される「置換芳香族炭化水素基」、「置換芳香族複素環基」または「置換縮合多環芳香族基」における「置換基」に関して示したものと同様のものをあげることができ、とりうる態様も、同様のものをあげることができる。
また、これらの基は置換基を有していてよく、置換基として、一般式(2)中のR1~R8で表される「置換基を有する炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基」、「置換基を有する炭素原子数5ないし10のシクロアルキル基」または「置換基を有する炭素原子数2ないし6の直鎖状もしくは分岐状のアルケニル基」における「置換基」に関して示したものと同様のものをあげることができ、とりうる態様も、同様のものをあげることができる。
また、これらの基は置換基を有していてよく、置換基として、一般式(1)、(1a)中のAr1~Ar8で表される「置換芳香族炭化水素基」、「置換芳香族複素環基」または「置換縮合多環芳香族基」における「置換基」に関して示したものと同様のものをあげることができ、とりうる態様も、同様のものをあげることができる。
また、これらの基は置換基を有していてよく、置換基として、一般式(1)、(1a)中のAr1~Ar8で表される「置換芳香族炭化水素基」、「置換芳香族複素環基」または「置換縮合多環芳香族基」における「置換基」に関して示したものと同様のものをあげることができ、とりうる態様も、同様のものをあげることができる。
また、これらの基は置換基を有していてよく、置換基として、一般式(1)、(1a)中のAr1~Ar8で表される「置換芳香族炭化水素基」、「置換芳香族複素環基」または「置換縮合多環芳香族基」における「置換基」に関して示したものと同様のものをあげることができ、とりうる態様も、同様のものをあげることができる。
一般式(2)中のR1~R8で表される「芳香族炭化水素基、芳香族複素環基もしくは縮合多環芳香族基から選ばれる基によって置換されたジ置換アミノ基」は、これらの基(R1~R8)同士が、これらの基(R1~R8)が有する「芳香族炭化水素基」、「芳香族複素環基」または「縮合多環芳香族基」を介しつつ、単結合で環を形成してもよく、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、これらの基(R1~R8)とこれらの基(R1~R8)が直接結合しているベンゼン環とで、これらの基(R1~R8)が有する「芳香族炭化水素基」、「芳香族複素環基」または「縮合多環芳香族基」を介しつつ、置換もしくは無置換のメチレン基、酸素原子、硫黄原子、またはモノアリールアミノ基などの連結基を介して互いに結合して環を形成してもよい。
また、これらの基は置換基を有していてよく、置換基として、一般式(2)中のR1~R8で表される「置換基を有する炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基」、「置換基を有する炭素原子数5ないし10のシクロアルキル基」または「置換基を有する炭素原子数2ないし6の直鎖状もしくは分岐状のアルケニル基」おける「置換基」に関して示したものと同様のものをあげることができ、とりうる態様も、同様のものをあげることができる。
また、これらの基は置換基を有していてよく、置換基として、一般式(1)、(1a)中のAr1~Ar8で表される「置換芳香族炭化水素基」、「置換芳香族複素環基」または「置換縮合多環芳香族基」における「置換基」に関して示したものと同様のものをあげることができ、とりうる態様も、同様のものをあげることができる。
また、これら基は置換基を有していてよく、置換基として、一般式(1)、(1a)中のAr1~Ar8で表される「置換芳香族炭化水素基」、「置換芳香族複素環基」または「置換縮合多環芳香族基」における「置換基」に関して示したものと同様のものをあげることができ、とりうる態様も、同様のものをあげることができる。
また、これらの基は置換基を有していてよく、置換基として、前記一般式(1)、(1a)中のAr1~Ar8で表される「置換芳香族炭化水素基」、「置換芳香族複素環基」または「置換縮合多環芳香族基」における「置換基」に関して示したものと同様のものをあげることができ、とりうる態様も、同様のものをあげることができる。
また、これらの基は置換基を有していてよく、置換基として、前記一般式(1)、(1a)中のAr1~Ar8で表される「置換芳香族炭化水素基」、「置換芳香族複素環基」または「置換縮合多環芳香族基」における「置換基」に関して示したものと同様のものをあげることができ、とりうる態様も、同様のものをあげることができる。
また、これらの基は置換基を有していてよく、置換基として、前記一般式(1)、(1a)中のAr1~Ar8で表される「置換芳香族炭化水素基」、「置換芳香族複素環基」または「置換縮合多環芳香族基」における「置換基」に関して示したものと同様のものをあげることができ、とりうる態様も、同様のものをあげることができる。
一般式(1)、(1a)において、n1は0または1~2を表すが、n1が0の時は、2つのジアリールアミノベンゼン環が直接(単結合で)結合していることを示し、n1が1の時は、2つのジアリールアミノベンゼン環が1個のフェニレン基を介して結合していることを示し、n1が2の時は、2つのジアリールアミノベンゼン環が2個のフェニレン基(ビフェニレン基)を介して結合していることを示す。
一般式(1)、(1a)において、n1は0であること、すなわち2つのジアリールアミノベンゼン環が直接(単結合で)結合していることが好ましい。
一般式(1)、(1a)において、Ar3またはAr4がAr3Ar4-N基(Ar3、Ar4とそれらが結合する窒素原子からなるジアリールアミノ基)が結合しているベンゼン環と、単結合で環を形成する態様や、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する態様も好ましい。この場合のベンゼン環における結合位置としては、Ar3Ar4-N基と隣接する位置が好ましい。
一般式(2)中のAr9としては、フェニル基、ビフェニリル基、ナフチル基、もしくは「芳香族複素環基」が好ましく、「芳香族複素環基」の中では、トリアジニル基、キナゾリニル基、ナフトピリミジニル基、ベンゾイミダゾリル基、ピリドピリミジニル基、ナフチリジニル基、ピリジル基、キノリル基、イソキノリル基が特に好ましい。
一般式(2)において、R1~R4のいずれかひとつが「芳香族炭化水素基」、「芳香族複素環基」もしくは「縮合多環芳香族基」であって、R1~R4が結合しているベンゼン環と、置換もしくは無置換のメチレン基、酸素原子、硫黄原子、またはモノアリールアミノ基などの連結基を介して互いに結合して環を形成する態様が好ましい。この場合の「芳香族炭化水素基」、「芳香族複素環基」もしくは「縮合多環芳香族基」としては、フェニル基、インデニル基、インドリル基、ベンゾフラニル基、ベンゾチエニル基が好ましく、R1~R4が結合しているベンゼン環と共にフルオレン環、カルバゾール環、ジベンゾフラン環、ジベンゾチオフェン環、インデノインドール環、インデノベンゾフラン環、インデノベンゾチオフェン環、ベンゾフロインドール環、ベンゾチエノインドール環、インドロインドール環を形成する態様が好ましい。
以上のように、一般式(2)で表される縮合環構造を有する複素環化合物の中で、R1~R4がこれらの基同士で互いに結合して環を形成する態様、または、R1~R4とR1~R4が結合しているベンゼン環とが、互いに結合して環を形成する態様として、下記一般式(2a)、(2b)、(2c)、(2d)もしくは(2e)で表される態様が好ましく用いられる。
一般式(2)中のR9、R10としては、「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」が好ましく、メチル基が特に好ましい。
一般式(3)中のAr10としては、フェニル基、ビフェニリル基、ナフチル基、もしくは「芳香族複素環基」が好ましく、「芳香族複素環基」の中では、トリアジニル基、キナゾリニル基、ナフトピリミジニル基、ベンゾイミダゾリル基、ピリドピリミジニル基、ナフチリジニル基、ピリジル基、キノリル基、イソキノリル基が特に好ましい。
一般式(3)において、R11~R14のいずれかひとつが「芳香族炭化水素基」、「芳香族複素環基」もしくは「縮合多環芳香族基」であって、R11~R14が結合しているベンゼン環と、置換もしくは無置換のメチレン基、酸素原子、硫黄原子、またはモノアリールアミノ基などの連結基を介して互いに結合して環を形成する態様が好ましい。この場合の「芳香族炭化水素基」、「芳香族複素環基」もしくは「縮合多環芳香族基」としては、フェニル基、インデニル基、インドリル基、ベンゾフラニル基、ベンゾチエニル基が好ましく、R11~R14が結合しているベンゼン環と共にフルオレン環、カルバゾール環、ジベンゾフラン環、ジベンゾチオフェン環、インデノインドール環、インデノベンゾフラン環、インデノベンゾチオフェン環、ベンゾフロインドール環、ベンゾチエノインドール環、インドロインドール環を形成する態様が好ましい。
以上のような、R11~R14とR11~R14が結合しているベンゼン環とが、互いに結合して環を形成する態様として、下記一般式(3a-1)、(3a-2)、(3a-3)、(3a-4)もしくは(3b-1)で表される態様が好ましい。
一般式(3)において、R15~R18のいずれかひとつが「芳香族炭化水素基」、「芳香族複素環基」もしくは「縮合多環芳香族基」である態様も好ましく、この場合、R15~R18のいずれかひとつが、フルオレニル基、カルバゾリル基、ジベンゾフラニル基、もしくはジベンゾチエニル基から選ばれる基であることが好ましく、R16がフルオレニル基、カルバゾリル基、ジベンゾフラニル基、もしくはジベンゾチエニル基であって、R15、R17およびR18が水素原子であることがより好ましい。
一般式(4)中のAr12としては、置換基を有するフェニル基が好ましく、この場合の置換基としては、フェニル基、ビフェニリル基、ターフェニル基などの芳香族炭化水素基、ナフチル基、アントラセニル基、アセナフテニル基、フェナントレニル基、フルオレニル基、インデニル基、ピレニル基、ペリレニル基、フルオランテニル基、トリフェニレニル基などの縮合多環芳香族基が好ましく、フェニル基、ナフチル基、アントラセニル基、フェナントレニル基、ピレニル基、フルオランテニル基、トリフェニレニル基がより好ましい。
一般式(4)中のAr13としては、置換基を有するフェニル基が好ましく、この場合の置換基としては、フェニル基、ビフェニリル基、ターフェニル基などの芳香族炭化水素基、ナフチル基、アントラセニル基、アセナフテニル基、フェナントレニル基、フルオレニル基、インデニル基、ピレニル基、ペリレニル基、フルオランテニル基、トリフェニレニル基などの縮合多環芳香族基が好ましく、フェニル基、ナフチル基、アントラセニル基、フェナントレニル基、ピレニル基、フルオランテニル基、トリフェニレニル基がより好ましい。
一般式(4)において、Ar11とAr12が同一ではないことが、薄膜の安定性の観点から好ましい。ここで、Ar11とAr12が同一ではない場合とは、異なる置換基であってもよいし、あるいは、異なる置換位置であってもよい。
一般式(4)において、Ar12とAr13は同一の基であってもよいが、分子全体の対称性がよくなることによって結晶化し易くなる恐れがあり、薄膜の安定性の観点から、Ar15とAr16は異なる基であることが好ましく、Ar12とAr13が同時に水素原子とはなることはないものとする。
一般式(4)において、Ar12とAr13の一方が水素原子であることが好ましい。
一般式(4)において、ベンゼン環におけるAr14の結合位置は、ピリミジン環との結合位置に対し、メタ位であることが、薄膜の安定性の観点から好ましい。
前記一般式(4)で表される、ピリミジン環構造を有する化合物は、電子注入および輸送能力に優れており、さらに薄膜の安定性や耐久性に優れ、電子輸送層の材料として好ましい化合物である。
低駆動電圧、高発光効率、かつ長寿命の有機EL素子を実現することが可能となった。
その他、本発明の有機EL素子に用いられる化合物は、カラムクロマトグラフによる精製、シリカゲル、活性炭、活性白土等による吸着精製、溶媒による再結晶や昌析法などによって精製を行った後、最後に昇華精製法によって精製したものを用いた。
本発明の有機EL素子の発光層としては、前記一般式(2)で表される縮合環構造を有する複素環化合物、または前記一般式(3)で表される縮合環構造を有する複素環化合物をホスト材料として用いることが好ましい。
窒素置換した反応容器に、(9,9-ジメチルフルオレン-2-イル)-(ビフェニル-4-イル)-(6-ブロモビフェニル-3-イル)アミン10.0g、4-{(ビフェニル-4-イル)-フェニルアミノ}フェニルボロン酸7.9g、テトラキストリフェニルホスフィンパラジウム(0)0.60g、炭酸カリウム5.0g、トルエン80ml、エタノール40ml、水30mlを加えて加熱し、100℃で一晩撹拌した。冷却し、分液操作により有機層を採取した後、濃縮し、カラムクロマトグラフ(担体:シリカゲル、溶離液:ジクロロメタン/ヘプタン)によって精製することにより、4-{(9,9-ジメチルフルオレン-2-イル)-(ビフェニル-4-イル)アミノ}-4'-(ビフェニル-4-イル-フェニルアミノ)-2-フェニル-ビフェニル(化合物1-7)の白色粉体8.30g(収率49%)を得た。
1H-NMR(CDCl3)で以下の48個の水素のシグナルを検出した。
δ(ppm)=7.72-7.60(2H)、7.59-7.52(2H)、7.51-7.10(35)、7.09-6.90(3H)、1.56(6H)。
実施例1において、4-{(ビフェニル-4-イル)-フェニルアミノ}フェニルボロン酸に代えて、4-(ジフェニルアミノ)フェニルボロン酸を用いて同様の条件で反応を行うことによって4-{(9,9-ジメチルフルオレン-2-イル)-(ビフェニル-4-イル)アミノ}-4'-(ジフェニルアミノ)-2-フェニル-ビフェニル(化合物1-11)の白色粉体11.5g(収率75%)を得た。
1H-NMR(CDCl3)で以下の44個の水素のシグナルを検出した。
δ(ppm)=7.71-7.64(4H)、7.58-7.56(2H)、7.49-6.94(32)、1.51(6H)。
実施例1において、(9,9-ジメチルフルオレン-2-イル)-(ビフェニル-4-イル)-(6-ブロモビフェニル-3-イル)アミンに代えて、(9,9-ジメチルフルオレン-2-イル)-フェニル-(6-ブロモビフェニル-3-イル)アミンを用い、同様の条件で反応を行うことによって4-{(9,9-ジメチルフルオレン-2-イル)-フェニルアミノ}-4'-(ビフェニル-4-イル-フェニルアミノ)-2-フェニル-ビフェニル(化合物1-14)の白色粉体10.2g(収率69%)を得た。
1H-NMR(CDCl3)で以下の44個の水素のシグナルを検出した。
δ(ppm)=7.69-7.59(4H)、7.48-7.42(4H)、7.37-6.98(30)、1.49(6H)。
融点 ガラス転移点
実施例1の化合物 観測されず 125℃
実施例2の化合物 観測されず 117℃
実施例3の化合物 観測されず 114℃
仕事関数
実施例1の化合物 5.57eV
実施例2の化合物 5.62eV
実施例3の化合物 5.59eV
窒素置換した反応容器に、7,7-ジメチル-7,12-ジヒドロベンゾ[4,5]チエノ[3,2-g]インデノ[1,2-b]インドール4.9g、2-クロロ-4-フェニルベンゾ[h]キナゾリン5.7g、トリス(ジベンジリデンアセトン)ジパラジウム0.3g、トリ-tert-ブチルホスホニウムテトラフルオロボレート0.4g、tert-ブトキシナトリウム4.0g、キシレン74mlを加えて加熱し、12時間還流撹拌した。室温まで冷却した後、酢酸エチル、水を加え、分液操作によって有機層を採取した。有機層を濃縮し、カラムクロマトグラフによる精製を行うことによって、7,7-ジメチル-12-(4-フェニルベンゾ[h]キナゾリン-2-イル)-7,12-ジヒドロベンゾ[4,5]チエノ[3,2-g]インデノ[1,2-b]インドール(化合物2-2)の粉体3.2g(収率38%)を得た。
窒素置換した反応容器に、12,12-ジメチル-1,12-ジヒドロインデノ[1',2':4,5]チエノ[2,3-a]カルバゾール4.9g、2-クロロ-4-フェニルキナゾリン5.7g、トリス(ジベンジリデンアセトン)ジパラジウム0.3g、トリ-tert-ブチルホスホニウムテトラフルオロボレート0.4g、tert-ブトキシナトリウム4.0g、キシレン74mlを加えて加熱し、12時間還流撹拌した。室温まで冷却した後、酢酸エチル、水を加え、分液操作によって有機層を採取した。有機層を濃縮し、カラムクロマトグラフによる精製を行うことによって、12,12-ジメチル-1-(4-フェニルキナゾリン-2-イル)-1,12-ジヒドロインデノ[1',2':4,5]チエノ[2,3-a]カルバゾール(化合物3-14)の粉体6.3g(収率44%)を得た。
比較のために、実施例8において、正孔注入層3及び正孔輸送層4の材料として実施例1の化合物(1-7)に代えて下記構造式の化合物(HTM-1)を用いた以外は、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。
比較のために、実施例8において、正孔注入層3及び正孔輸送層4の材料として実施例1の化合物(1-7)に代えて上記構造式の化合物(HTM-1)を用いて、かつ発光層5の材料として実施例6の化合物(2-2)に代えて実施例7の化合物(3-14)を蒸着速度比が(EMD-1):(3-14)=5:95となる蒸着速度で二元蒸着を行い、膜厚20nm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。
比較のために、実施例8において、正孔注入層3及び正孔輸送層4の材料として実施例1の化合物(1-7)に代えて下記構造式の化合物(HTM-2)を用いた以外は、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。
比較のために、実施例8において、正孔注入層3及び正孔輸送層4の材料として実施例1の化合物(1-7)に代えて上記構造式の化合物(HTM-2)を用いて、かつ発光層5の材料として実施例6の化合物(2-2)に代えて実施例7の化合物(3-14)を蒸着速度比が(EMD-1):(3-14)=5:95となる蒸着速度で二元蒸着を行い、膜厚20nm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 透明陽極
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 (8)
- 少なくとも陽極、正孔輸送層、発光層、電子輸送層及び陰極をこの順に有する有機エレクトロルミネッセンス素子において、前記正孔輸送層が下記一般式(1)で表されるアリールアミン化合物を含有し、前記発光層が下記一般式(2)で表される縮合環構造を有する複素環化合物もしくは下記一般式(3)で表される縮合環構造を有する複素環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。
(1)
(式中、Ar1~Ar5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。Ar6~Ar8は相互に同一でも異なってもよく、水素原子、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。n1は0、1または2を表す。ここで、Ar3とAr4は、単結合で環を形成してもよく、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。Ar3またはAr4はAr3Ar4-N基が結合しているベンゼン環と、単結合で環を形成してもよく、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。)
(2)
(式中、A1は置換もしくは無置換の芳香族炭化水素の2価基、置換もしくは無置換の芳香族複素環の2価基、置換もしくは無置換の縮合多環芳香族の2価基、または単結合を表す。Ar9は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。R1~R4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、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、置換もしくは無置換のアリールオキシ基、または芳香族炭化水素基、芳香族複素環基もしくは縮合多環芳香族基から選ばれる基によって置換されたジ置換アミノ基を表す。R1~R4のそれぞれの基同士が単結合で環を形成してもよく、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~R4は、R1~R4が結合しているベンゼン環と、置換もしくは無置換のメチレン基、酸素原子、硫黄原子、またはモノアリールアミノ基の連結基を介して互いに結合して環を形成してもよい。R5~R8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、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、置換もしくは無置換のアリールオキシ基、または芳香族炭化水素基、芳香族複素環基もしくは縮合多環芳香族基から選ばれる基によって置換されたジ置換アミノ基を表す。R5~R8のそれぞれの基同士が単結合で環を形成してもよく、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。R5~R8は、R5~R8が結合しているベンゼン環と、置換もしくは無置換のメチレン基、酸素原子、硫黄原子、またはモノアリールアミノ基の連結基を介して互いに結合して環を形成してもよい。R9とR10は相互に同一でも異なってもよく、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。R9とR10のそれぞれの基同士が単結合で環を形成してもよく、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。)
(3)
(式中、A2は置換もしくは無置換の芳香族炭化水素の2価基、置換もしくは無置換の芳香族複素環の2価基、置換もしくは無置換の縮合多環芳香族の2価基、または単結合を表す。Ar10は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。R11~R14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、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、置換もしくは無置換のアリールオキシ基、または芳香族炭化水素基、芳香族複素環基もしくは縮合多環芳香族基から選ばれる基によって置換されたジ置換アミノ基を表す。R11~R14のそれぞれの基同士が単結合で環を形成してもよく、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。R11~R14は、R11~R14が結合しているベンゼン環と、置換もしくは無置換のメチレン基、酸素原子、硫黄原子、またはモノアリールアミノ基の連結基を介して互いに結合して環を形成してもよい。R15~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、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、置換もしくは無置換のアリールオキシ基、または芳香族炭化水素基、芳香族複素環基もしくは縮合多環芳香族基から選ばれる基によって置換されたジ置換アミノ基を表す。R15~R18のそれぞれの基同士が単結合で環を形成してもよく、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。R15~R18は、R15~R18が結合しているベンゼン環と、置換もしくは無置換のメチレン基、酸素原子、硫黄原子、またはモノアリールアミノ基の連結基を介して互いに結合して環を形成してもよい。) - 前記アリールアミン化合物が下記一般式(1a)で表されることを特徴とする請求項1記載の有機エレクトロルミネッセンス素子。
(1a)
(式中、Ar1~Ar5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。Ar6~Ar8は相互に同一でも異なってもよく、水素原子、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。n1は0、1または2を表す。ここで、Ar3とAr4は、単結合で環を形成してもよく、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。Ar3またはAr4は、Ar3Ar4-N基が結合しているベンゼン環と、単結合で環を形成してもよく、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。) - 前記正孔輸送層が第一正孔輸送層および第二正孔輸送層の2層構造であって、該第一正孔輸送層が前記一般式(1)で表されるアリールアミン化合物を含有することを特徴とする、
請求項1または2記載の有機エレクトロルミネッセンス素子。 - 前記正孔輸送層が第一正孔輸送層および第二正孔輸送層の2層構造であって、該第二正孔輸送層、または前記第一正孔輸送層と発光層との間に配置された積層膜のうちの少なくとも一層に、前記一般式(1)で表されるアリールアミン化合物を含有することを特徴とする、
請求項1または2記載の有機エレクトロルミネッセンス素子。 - 前記電子輸送層が、下記一般式(4)で表されるピリミジン環構造を有する化合物を含有することを特徴とする、
請求項1~4のいずれか一項に記載の有機エレクトロルミネッセンス素子。
(4)
(式中、Ar11は、置換もしくは無置換の芳香族炭化水素基、または置換もしくは無置換の縮合多環芳香族基を表す。Ar12、Ar13は同一でも異なっていてもよく、水素原子、置換もしくは無置換の芳香族炭化水素基、または置換もしくは無置換の縮合多環芳香族基を表す。Ar14は、置換もしくは無置換の芳香族複素環基を表す。R19~R22は、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、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、Ar12とAr13は同時に水素原子となることはないものとする。) - 前記発光層が、赤色の発光材料を含有することを特徴とする、
請求項1~5のいずれか1項に記載の有機エレクトロルミネッセンス素子。 - 前記発光層が、燐光性の発光材料を含有することを特徴とする、
請求項1~5のいずれか1項に記載の有機エレクトロルミネッセンス素子。 - 前記した燐光性の発光材料がイリジウムまたは白金を含む金属錯体である、
請求項6または7記載の有機エレクトロルミネッセンス素子。
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP18859295.0A EP3690970B1 (en) | 2017-09-25 | 2018-09-21 | Organic electroluminescence device |
| US16/650,717 US11605785B2 (en) | 2017-09-25 | 2018-09-21 | Organic electroluminescence device |
| CN201880061993.XA CN111164778B (zh) | 2017-09-25 | 2018-09-21 | 有机电致发光元件 |
| JP2019543724A JP7250683B2 (ja) | 2017-09-25 | 2018-09-21 | 有機エレクトロルミネッセンス素子 |
| KR1020207010915A KR102687394B1 (ko) | 2017-09-25 | 2018-09-21 | 유기 일렉트로 루미네선스 소자 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-183655 | 2017-09-25 | ||
| JP2017183655 | 2017-09-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2019059334A1 true WO2019059334A1 (ja) | 2019-03-28 |
Family
ID=65810221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2018/034990 Ceased WO2019059334A1 (ja) | 2017-09-25 | 2018-09-21 | 有機エレクトロルミネッセンス素子 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US11605785B2 (ja) |
| EP (1) | EP3690970B1 (ja) |
| JP (1) | JP7250683B2 (ja) |
| KR (1) | KR102687394B1 (ja) |
| CN (1) | CN111164778B (ja) |
| TW (1) | TWI790287B (ja) |
| WO (1) | WO2019059334A1 (ja) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11925107B2 (en) * | 2017-03-28 | 2024-03-05 | Hodogaya Chemical Co., Ltd. | Organic electroluminescent device |
| KR20220130673A (ko) * | 2020-01-21 | 2022-09-27 | 호도가야 가가쿠 고교 가부시키가이샤 | 아릴아민 화합물 및 유기 일렉트로루미네센스 소자 |
| CN114276366A (zh) * | 2021-04-20 | 2022-04-05 | 北京八亿时空液晶科技股份有限公司 | 一种吲哚衍生物及其应用 |
| CN114031609A (zh) * | 2021-12-14 | 2022-02-11 | 北京燕化集联光电技术有限公司 | 一种含咔唑及喹唑啉类结构化合物及其应用 |
| CN114805386B (zh) * | 2022-06-08 | 2024-02-09 | 上海钥熠电子科技有限公司 | 有机化合物、主体材料和有机光电器件 |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4943840B1 (ja) | 1970-12-25 | 1974-11-25 | ||
| JPH0848656A (ja) | 1994-02-08 | 1996-02-20 | Tdk Corp | 有機el素子用化合物および有機el素子 |
| JP3194657B2 (ja) | 1993-11-01 | 2001-07-30 | 松下電器産業株式会社 | 電界発光素子 |
| JP2004253298A (ja) * | 2003-02-21 | 2004-09-09 | Konica Minolta Holdings Inc | 白色発光有機エレクトロルミネッセンス素子 |
| US20050236976A1 (en) * | 2003-12-31 | 2005-10-27 | Ritdisplay Corporation | Organic electroluminescent device |
| JP2006151979A (ja) | 2004-11-29 | 2006-06-15 | Samsung Sdi Co Ltd | フェニルカルバゾール系化合物とその製造方法及び有機電界発光素子 |
| WO2008062636A1 (fr) | 2006-11-24 | 2008-05-29 | Idemitsu Kosan Co., Ltd. | Dérivé d'amine aromatique et élément électroluminescent organique utilisant celui-ci |
| KR20130060157A (ko) | 2011-11-29 | 2013-06-07 | 에스에프씨 주식회사 | 안트라센 유도체 및 이를 포함하는 유기전계발광소자 |
| WO2014009310A1 (en) | 2012-07-09 | 2014-01-16 | Novaled Ag | Doped organic semiconductive matrix material |
| JP2014513064A (ja) | 2011-03-08 | 2014-05-29 | ローム・アンド・ハース・エレクトロニック・マテリアルズ・コリア・リミテッド | 新規な有機エレクトロルミネッセンス化合物およびそれを用いる有機エレクトロルミネッセンス素子 |
| WO2016111270A1 (ja) * | 2015-01-07 | 2016-07-14 | 保土谷化学工業株式会社 | 有機エレクトロルミネッセンス素子 |
| WO2017073594A1 (ja) * | 2015-10-29 | 2017-05-04 | 保土谷化学工業株式会社 | 有機エレクトロルミネッセンス素子 |
| WO2017122813A1 (ja) * | 2016-01-14 | 2017-07-20 | 保土谷化学工業株式会社 | 有機エレクトロルミネッセンス素子 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0650955B1 (en) | 1993-11-01 | 1998-08-19 | Hodogaya Chemical Co., Ltd. | Amine compound and electro-luminescence device comprising same |
| EP0666298A3 (en) | 1994-02-08 | 1995-11-15 | Tdk Corp | Organic electroluminescent element and compound used therein. |
| JP4442114B2 (ja) * | 2002-05-14 | 2010-03-31 | コニカミノルタホールディングス株式会社 | 有機エレクトロルミネッセンス素子及び表示装置 |
| CN101885685B (zh) | 2004-05-25 | 2012-08-22 | 保土谷化学工业株式会社 | 对三联苯化合物和使用该化合物的电子照相用感光体 |
| KR102137429B1 (ko) | 2013-07-11 | 2020-07-24 | 덕산네오룩스 주식회사 | 유기전기 소자용 화합물을 이용한 유기전기소자 및 그 전자 장치 |
| JP3194657U (ja) | 2014-09-19 | 2014-12-04 | 恵美子 青柳 | 温熱首巻 |
| KR102388728B1 (ko) | 2015-03-31 | 2022-04-21 | 삼성디스플레이 주식회사 | 축합환 화합물 및 이를 포함한 유기 발광 소자 |
| EP3389106B1 (en) * | 2015-12-08 | 2021-12-01 | Hodogaya Chemical Co., Ltd. | Organic electroluminescent element |
-
2018
- 2018-09-21 KR KR1020207010915A patent/KR102687394B1/ko active Active
- 2018-09-21 EP EP18859295.0A patent/EP3690970B1/en active Active
- 2018-09-21 JP JP2019543724A patent/JP7250683B2/ja active Active
- 2018-09-21 US US16/650,717 patent/US11605785B2/en active Active
- 2018-09-21 WO PCT/JP2018/034990 patent/WO2019059334A1/ja not_active Ceased
- 2018-09-21 CN CN201880061993.XA patent/CN111164778B/zh active Active
- 2018-09-25 TW TW107133617A patent/TWI790287B/zh active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4943840B1 (ja) | 1970-12-25 | 1974-11-25 | ||
| JP3194657B2 (ja) | 1993-11-01 | 2001-07-30 | 松下電器産業株式会社 | 電界発光素子 |
| JPH0848656A (ja) | 1994-02-08 | 1996-02-20 | Tdk Corp | 有機el素子用化合物および有機el素子 |
| JP2004253298A (ja) * | 2003-02-21 | 2004-09-09 | Konica Minolta Holdings Inc | 白色発光有機エレクトロルミネッセンス素子 |
| US20050236976A1 (en) * | 2003-12-31 | 2005-10-27 | Ritdisplay Corporation | Organic electroluminescent device |
| JP2006151979A (ja) | 2004-11-29 | 2006-06-15 | Samsung Sdi Co Ltd | フェニルカルバゾール系化合物とその製造方法及び有機電界発光素子 |
| WO2008062636A1 (fr) | 2006-11-24 | 2008-05-29 | Idemitsu Kosan Co., Ltd. | Dérivé d'amine aromatique et élément électroluminescent organique utilisant celui-ci |
| JP2014513064A (ja) | 2011-03-08 | 2014-05-29 | ローム・アンド・ハース・エレクトロニック・マテリアルズ・コリア・リミテッド | 新規な有機エレクトロルミネッセンス化合物およびそれを用いる有機エレクトロルミネッセンス素子 |
| KR20130060157A (ko) | 2011-11-29 | 2013-06-07 | 에스에프씨 주식회사 | 안트라센 유도체 및 이를 포함하는 유기전계발광소자 |
| WO2014009310A1 (en) | 2012-07-09 | 2014-01-16 | Novaled Ag | Doped organic semiconductive matrix material |
| WO2016111270A1 (ja) * | 2015-01-07 | 2016-07-14 | 保土谷化学工業株式会社 | 有機エレクトロルミネッセンス素子 |
| WO2017073594A1 (ja) * | 2015-10-29 | 2017-05-04 | 保土谷化学工業株式会社 | 有機エレクトロルミネッセンス素子 |
| WO2017122813A1 (ja) * | 2016-01-14 | 2017-07-20 | 保土谷化学工業株式会社 | 有機エレクトロルミネッセンス素子 |
Non-Patent Citations (4)
| Title |
|---|
| APPL.PHYS.LET., vol. 98, 2011 |
| JAPAN OLED FORUM, PROCEEDINGS OF THE THIRD MEETING, 2006, pages 13 - 14 |
| See also references of EP3690970A4 |
| THE JAPAN SOCIETY OF APPLIED PHYSICS, PROCEEDINGS OF THE NINTH WORKSHOP, 2001, pages 23 - 31 |
Also Published As
| Publication number | Publication date |
|---|---|
| US20200287141A1 (en) | 2020-09-10 |
| CN111164778B (zh) | 2023-04-25 |
| EP3690970A4 (en) | 2021-07-07 |
| KR102687394B1 (ko) | 2024-07-22 |
| EP3690970A1 (en) | 2020-08-05 |
| CN111164778A (zh) | 2020-05-15 |
| EP3690970B1 (en) | 2023-04-05 |
| TW201920604A (zh) | 2019-06-01 |
| JP7250683B2 (ja) | 2023-04-03 |
| KR20200057731A (ko) | 2020-05-26 |
| JPWO2019059334A1 (ja) | 2020-11-05 |
| TWI790287B (zh) | 2023-01-21 |
| US11605785B2 (en) | 2023-03-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102813012B1 (ko) | 트리아릴아민 구조를 갖는 화합물 및 유기 일렉트로 루미네선스 소자 | |
| JP7217320B2 (ja) | 有機エレクトロルミネッセンス素子用材料及び有機エレクトロルミネッセンス素子 | |
| WO2017086357A1 (ja) | 有機エレクトロルミネッセンス素子 | |
| KR102687394B1 (ko) | 유기 일렉트로 루미네선스 소자 | |
| WO2017138569A1 (ja) | 有機エレクトロルミネッセンス素子 | |
| WO2018092561A1 (ja) | 有機エレクトロルミネッセンス素子 | |
| JPWO2017122813A1 (ja) | 有機エレクトロルミネッセンス素子 | |
| WO2016111270A1 (ja) | 有機エレクトロルミネッセンス素子 | |
| WO2019026728A1 (ja) | ベンゾアゾール環構造を有する化合物を含有する有機エレクトロルミネッセンス素子 | |
| CN108292708B (zh) | 有机电致发光器件 | |
| CN110326123A (zh) | 有机电致发光元件 | |
| TWI894213B (zh) | 芳香胺化合物及使用其之電子機器 | |
| KR102747127B1 (ko) | 유기 일렉트로루미네선스 소자 | |
| WO2019054233A1 (ja) | 有機エレクトロルミネッセンス素子 | |
| JP7394050B2 (ja) | ベンゾイミダゾール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 | |
| JP7784992B2 (ja) | 有機エレクトロルミネッセンス素子 | |
| WO2017099155A1 (ja) | 有機エレクトロルミネッセンス素子 | |
| JP7065029B2 (ja) | アリールジアミン化合物及び有機エレクトロルミネッセンス素子 | |
| JP6479770B2 (ja) | キノリノトリアゾール誘導体および有機エレクトロルミネッセンス素子 | |
| WO2019049965A1 (ja) | ピリミジ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 | |
| JP2025178181A (ja) | アリールアミン化合物、有機エレクトロルミネッセンス素子、および電子機器 | |
| WO2019039402A1 (ja) | インデノベンゾアゾール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 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 18859295 Country of ref document: EP Kind code of ref document: A1 |
|
| ENP | Entry into the national phase |
Ref document number: 2019543724 Country of ref document: JP Kind code of ref document: A |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| ENP | Entry into the national phase |
Ref document number: 20207010915 Country of ref document: KR Kind code of ref document: A |
|
| ENP | Entry into the national phase |
Ref document number: 2018859295 Country of ref document: EP Effective date: 20200428 |