WO2011074253A1 - 有機発光媒体 - Google Patents
有機発光媒体 Download PDFInfo
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- WO2011074253A1 WO2011074253A1 PCT/JP2010/007270 JP2010007270W WO2011074253A1 WO 2011074253 A1 WO2011074253 A1 WO 2011074253A1 JP 2010007270 W JP2010007270 W JP 2010007270W WO 2011074253 A1 WO2011074253 A1 WO 2011074253A1
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- 0 *Nc1ccc(ccc2c34)c3c1ccc4ccc2N(*)* Chemical compound *Nc1ccc(ccc2c34)c3c1ccc4ccc2N(*)* 0.000 description 14
- IVSFXSPSOPDKDG-UHFFFAOYSA-N CC(CCC1)=CC1C1NC1 Chemical compound CC(CCC1)=CC1C1NC1 IVSFXSPSOPDKDG-UHFFFAOYSA-N 0.000 description 1
- GUUDUUDWUWUTPD-UHFFFAOYSA-N CCc1ccc(C(C)C)cc1 Chemical compound CCc1ccc(C(C)C)cc1 GUUDUUDWUWUTPD-UHFFFAOYSA-N 0.000 description 1
- IDGRUXUQFTUJOT-UHFFFAOYSA-N c(cc1)ccc1-c1c(cccc2)c2c(-c(cc2)cc3c2[o]c2ccccc32)c2c1cccc2 Chemical compound c(cc1)ccc1-c1c(cccc2)c2c(-c(cc2)cc3c2[o]c2ccccc32)c2c1cccc2 IDGRUXUQFTUJOT-UHFFFAOYSA-N 0.000 description 1
- UYEFMAMRNKBMMP-UHFFFAOYSA-N c1ccc2[o]c(ccc(-c3c(cccc4)c4c(-c4cc(cccc5)c5cc4)c4c3cccc4)c3)c3c2c1 Chemical compound c1ccc2[o]c(ccc(-c3c(cccc4)c4c(-c4cc(cccc5)c5cc4)c4c3cccc4)c3)c3c2c1 UYEFMAMRNKBMMP-UHFFFAOYSA-N 0.000 description 1
- CRZYXFMREXNDDR-UHFFFAOYSA-N c1ccc2[o]c(ccc(-c3c(cccc4)c4c(-c4cccc5ccccc45)c4c3cccc4)c3)c3c2c1 Chemical compound c1ccc2[o]c(ccc(-c3c(cccc4)c4c(-c4cccc5ccccc45)c4c3cccc4)c3)c3c2c1 CRZYXFMREXNDDR-UHFFFAOYSA-N 0.000 description 1
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- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/06—Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials
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- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B1/00—Dyes with anthracene nucleus not condensed with any other ring
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- C09B57/00—Other synthetic dyes of known constitution
- C09B57/001—Pyrene dyes
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- C09B69/00—Dyes not provided for by a single group of this subclass
- C09B69/008—Dyes containing a substituent, which contains a silicium atom
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B33/00—Electroluminescent light sources
- H05B33/12—Light sources with substantially two-dimensional radiating surfaces
- H05B33/14—Light sources with substantially two-dimensional radiating surfaces characterised by the chemical or physical composition or the arrangement of the electroluminescent material, or by the simultaneous addition of the electroluminescent material in or onto the light source
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- 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
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- H—ELECTRICITY
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- 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
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- 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
- H10K85/626—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene containing more than one polycyclic condensed aromatic rings, e.g. bis-anthracene
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- 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
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- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/10—Non-macromolecular compounds
- C09K2211/1003—Carbocyclic compounds
- C09K2211/1011—Condensed systems
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- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/10—Non-macromolecular compounds
- C09K2211/1003—Carbocyclic compounds
- C09K2211/1014—Carbocyclic compounds bridged by heteroatoms, e.g. N, P, Si or B
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- H—ELECTRICITY
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
Definitions
- the present invention relates to an organic light-emitting medium and an organic electroluminescence device using an aromatic amine derivative and an anthracene derivative.
- Organic electroluminescence (EL) devices using organic substances are promising for use as solid-state, inexpensive, large-area full-color display devices, and many developments have been made.
- an organic EL element is composed of a light emitting layer and a pair of counter electrodes sandwiching the layer. In light emission, when an electric field is applied between both electrodes, electrons are injected from the cathode side and holes are injected from the anode side. Further, the electrons recombine with holes in the light emitting layer to generate an excited state, and energy is emitted as light when the excited state returns to the ground state.
- Patent Documents 1-8 describe diaminopyrene derivatives.
- Patent Documents 1 and 2 describe that blue light emission with a short wavelength can be obtained.
- An object of the present invention is to provide an organic light-emitting medium that can obtain blue light emission with high color purity and a long emission lifetime.
- An organic light-emitting medium comprising an aromatic amine derivative represented by the following formula (1) and an anthracene derivative represented by the following formula (I).
- Ar 1 to Ar 4 each represents a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, and at least one of Ar 1 to Ar 4 represents an electron withdrawing group. It is the aryl group which has.
- R 101 to R 108 are each a hydrogen atom, a fluorine atom, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 10 carbon atoms, substituted or unsubstituted, An unsubstituted alkylsilyl group having 3 to 30 carbon atoms, a substituted or unsubstituted arylsilyl group having 8 to 30 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted ring An aryloxy group having 6 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms; Ar 101 to Ar 104 are a substituted or unsubstitute
- An organic light-emitting medium comprising an aromatic amine derivative represented by the following formula (1) and an anthracene derivative represented by the following formula (II).
- Ar 1 to Ar 4 each represents a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, and at least one of Ar 1 to Ar 4 represents an electron withdrawing group. It is the aryl group which has.
- R 101 to R 108 are each a hydrogen atom, a fluorine atom, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 10 carbon atoms, substituted or unsubstituted, An unsubstituted alkylsilyl group having 3 to 30 carbon atoms, a substituted or unsubstituted arylsilyl group having 8 to 30 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted ring An aryloxy group having 6 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms; Ar 105 is a substituted or unsubstituted alky
- Ar 201 is a substituted or unsubstituted condensed aromatic ring group having 16 to 30 ring carbon atoms or a substituted or unsubstituted condensed heterocyclic group having 10 to 30 ring atoms.
- An organic light-emitting medium comprising an aromatic amine derivative represented by the following formula (1) and an anthracene derivative represented by the following formula (III).
- Ar 1 to Ar 4 each represents a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, and at least one of Ar 1 to Ar 4 represents an electron withdrawing group. It is the aryl group which has.
- R 101 to R 108 are each a hydrogen atom, a fluorine atom, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 10 carbon atoms, substituted or unsubstituted An unsubstituted alkylsilyl group having 3 to 30 carbon atoms, a substituted or unsubstituted arylsilyl group having 8 to 30 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted ring An aryloxy group having 6 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms; Ar 106 is a substituted or unsubstituted
- Ar 301 is a substituted or unsubstituted 2-naphthyl group or a substituted or unsubstituted fluorenyl group. However, Ar 106 and Ar 301 are different. ] 4).
- An organic light-emitting medium comprising an aromatic amine derivative represented by the following formula (1) and an anthracene derivative represented by the following formula (10).
- Ar 1 to Ar 4 each represents a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, and at least one of Ar 1 to Ar 4 represents an electron withdrawing group. It is the aryl group which has.
- R 101 to R 108 are each a hydrogen atom, a fluorine atom, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 10 carbon atoms, substituted or unsubstituted, An unsubstituted alkylsilyl group having 3 to 30 carbon atoms, a substituted or unsubstituted arylsilyl group having 8 to 30 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted ring An aryloxy group having 6 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms; Ar 11 represents a substituted or unsubstituted
- R 111 represents a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms, or a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms.
- b is an integer of 0 to 7.
- R 111 When b is an integer of 2 or more, a plurality of R 111 may be the same or different. ] 5. 5. The organic light-emitting medium according to 4, wherein the anthracene derivative is represented by the following formula (11). (Wherein R 101 to R 108 , R 111 and b are the same as those in formula (10).
- Ar 14 is a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 10 ring carbon atoms, Or a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms.
- An organic light-emitting medium comprising an aromatic amine derivative represented by the following formula (1) and an anthracene derivative represented by the following formula (12).
- Ar 1 to Ar 4 each represents a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, and at least one of Ar 1 to Ar 4 represents an electron withdrawing group. It is the aryl group which has.
- R 101 to R 108 are each a hydrogen atom, a fluorine atom, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 10 carbon atoms, substituted or unsubstituted, An unsubstituted alkylsilyl group having 3 to 30 carbon atoms, a substituted or unsubstituted arylsilyl group having 8 to 30 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted ring An aryloxy group having 6 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms; Ar 12 and Ar 13 each represent a hydrogen atom,
- An organic light-emitting medium comprising an aromatic amine derivative represented by the following formula (1) and an anthracene derivative represented by the following formula (13).
- Ar 1 to Ar 4 each represents a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, and at least one of Ar 1 to Ar 4 represents an electron withdrawing group. It is the aryl group which has.
- R 101 to R 108 and R 111 are a hydrogen atom, a fluorine atom, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, and a substituted or unsubstituted cycloalkyl group having 3 to 10 carbon atoms, respectively.
- Ar 15 is a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 10 ring carbon atoms, Or a substituted or un
- b is an integer of 0 to 7. When b is an integer of 2 or more, a plurality of R 111 may be the same or different. ) 8).
- An organic light-emitting medium comprising an aromatic amine derivative represented by the following formula (1) and an anthracene derivative represented by the following formula (14).
- Ar 1 to Ar 4 each represents a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, and at least one of Ar 1 to Ar 4 represents an electron withdrawing group. It is the aryl group which has.
- R 101 to R 108 are each a hydrogen atom, a fluorine atom, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 10 carbon atoms, substituted or unsubstituted, An unsubstituted alkylsilyl group having 3 to 30 carbon atoms, a substituted or unsubstituted arylsilyl group having 8 to 30 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted ring An aryloxy group having 6 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms; Ar 16 represents a substituted or unsubstit
- Ar 16 may form a ring together with the benzene ring to which Ar 16 is bonded.
- Ar 17 is a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 10 ring carbon atoms, Or a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms. ) 9.
- An organic light-emitting medium comprising an aromatic amine derivative represented by the following formula (1) and an anthracene derivative represented by the following formula (15).
- Ar 1 to Ar 4 each represents a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, and at least one of Ar 1 to Ar 4 represents an electron withdrawing group. It is the aryl group which has.
- R 101 to R 108 are each a hydrogen atom, a fluorine atom, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 10 carbon atoms, and a substituted group.
- an unsubstituted alkylsilyl group having 3 to 30 carbon atoms a substituted or unsubstituted arylsilyl group having 8 to 30 ring carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted group.
- Ar 18 is a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms.
- L is a single bond, a substituted or unsubstituted arylene group having 6 to 30 ring carbon atoms, or a divalent substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms.
- R 121 represents a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms, or a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms.
- n is an integer of 0 to 11.
- An organic light-emitting medium comprising an aromatic amine derivative represented by the following formula (1) and an anthracene derivative represented by the following formula (16).
- Ar 1 to Ar 4 each represents a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, and at least one of Ar 1 to Ar 4 represents an electron withdrawing group. It is the aryl group which has.
- R 101 to R 108 are each a hydrogen atom, a fluorine atom, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 10 carbon atoms, and a substituted group. Or an unsubstituted alkylsilyl group having 3 to 30 carbon atoms, a substituted or unsubstituted arylsilyl group having 8 to 30 ring carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted group.
- L is a single bond, a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms or a divalent substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms.
- Ar 19 is a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms.
- X 11 represents an oxygen atom, a sulfur atom, —NR— or —CR a R b , and R, R a , and R b each represent the same group as R 101 to R 108 .
- R 121 represents a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms, or a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms.
- m is an integer of 0 to 7. When m is an integer of 2 or more, the plurality of R 121 may be the same or different.
- An organic light-emitting medium comprising an aromatic amine derivative represented by the following formula (1) and an anthracene derivative represented by the following formula (17).
- Ar 1 to Ar 4 each represents a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, and at least one of Ar 1 to Ar 4 represents an electron withdrawing group. It is the aryl group which has.
- R 101 to R 108 are each a hydrogen atom, a fluorine atom, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 10 carbon atoms, and a substituted group.
- an unsubstituted alkylsilyl group having 3 to 30 carbon atoms a substituted or unsubstituted arylsilyl group having 8 to 30 ring carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted group.
- Ar 20 represents a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms.
- R 201 represents a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms, or a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms.
- p is an integer of 0-4.
- An organic light-emitting medium comprising an aromatic amine derivative represented by the following formula (1) and an anthracene derivative represented by the following formula (18).
- Ar 1 to Ar 4 each represents a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, and at least one of Ar 1 to Ar 4 represents an electron withdrawing group. It is the aryl group which has.
- R 101 to R 108 are each a hydrogen atom, a fluorine atom, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 10 carbon atoms, and a substituted group.
- an unsubstituted alkylsilyl group having 3 to 30 carbon atoms a substituted or unsubstituted arylsilyl group having 8 to 30 ring carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted group.
- Ar 20 represents a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms.
- R 201 and R 301 each represents a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms, a substituted or unsubstituted carbon group having 1 to 10 carbon atoms.
- An alkyl group, a substituted or unsubstituted cycloalkyl group having 3 to 10 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted silyl group, a cyano group, or a fluorine atom. is there.
- p is an integer of 0-4.
- a plurality of R 201 may be the same or different.
- q is an integer of 0 to 11.
- a plurality of R 301 may be the same or different, and adjacent substituents may form a saturated or unsaturated ring.
- R 1 to R 10 are each a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkylsilyl group having 3 to 30 carbon atoms, a substituted or unsubstituted ring; Arylsilyl group having 8 to 30 carbon atoms, substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms, substituted or unsubstituted aralkyl group having 6 to 20 ring carbon atoms, substituted or unsubstituted ring carbon atoms 6 to 10 aryl groups or electron-withdrawing groups are shown.
- At least one of R 1 to R 5 is an electron withdrawing group, and at least one of R 6 to R 10 is an electron withdrawing group.
- Any one of R 1 to R 5 is an electron-withdrawing group, the other is a hydrogen atom, 14.
- 15. The organic light emitting medium according to any one of 1 to 14, wherein the electron withdrawing group is a cyano group.
- An organic thin film comprising the organic light-emitting medium according to any one of 1 to 15. 17.
- An organic electroluminescence device in which at least one organic thin film layer including at least a light emitting layer is sandwiched between a cathode and an anode, wherein at least one of the organic thin film layers is an organic thin film according to 16. .
- an organic light emitting medium having a blue light emission with high color purity and a long light emission lifetime.
- the organic light-emitting medium of the present invention contains an aromatic amine derivative represented by the following formula (1) and an anthracene derivative represented by the following formula (I).
- Ar 1 to Ar 4 each represents a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, and at least one of Ar 1 to Ar 4 represents an electron withdrawing group. It is the aryl group which has.
- R 101 to R 108 are each a hydrogen atom, a fluorine atom, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 10 carbon atoms, substituted or unsubstituted, An unsubstituted alkylsilyl group having 3 to 30 carbon atoms, a substituted or unsubstituted arylsilyl group having 8 to 30 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted ring An aryloxy group having 6 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms; Ar 101 to Ar 104 are a substituted or unsubstitute
- the organic light-emitting medium of the present invention contains an aromatic amine derivative represented by the following formula (1) and an anthracene derivative represented by the following formula (II).
- Ar 1 to Ar 4 each represents a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, and at least one of Ar 1 to Ar 4 represents an electron withdrawing group. It is the aryl group which has.
- R 101 to R 108 are each a hydrogen atom, a fluorine atom, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 10 carbon atoms, substituted or unsubstituted, An unsubstituted alkylsilyl group having 3 to 30 carbon atoms, a substituted or unsubstituted arylsilyl group having 8 to 30 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted ring An aryloxy group having 6 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms; Ar 105 is a substituted or unsubstituted alky
- the organic light-emitting medium of the present invention contains an aromatic amine derivative represented by the following formula (1) and an anthracene derivative represented by the following formula (III).
- Ar 1 to Ar 4 each represents a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, and at least one of Ar 1 to Ar 4 represents an electron withdrawing group. It is the aryl group which has.
- R 101 to R 108 are each a hydrogen atom, a fluorine atom, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 10 carbon atoms, substituted or unsubstituted An unsubstituted alkylsilyl group having 3 to 30 carbon atoms, a substituted or unsubstituted arylsilyl group having 8 to 30 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted ring An aryloxy group having 6 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms; Ar 106 is a substituted or unsubstituted
- Ar 301 is a substituted or unsubstituted 2-naphthyl group or a substituted or unsubstituted fluorenyl group. However, Ar 106 and Ar 301 are different. ] Ar 106 and Ar 301 are groups having the same structure, but are different if their bonding positions to the anthracene skeleton are different.
- Ar 1 to Ar 4 each represents a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, and Ar 1 to Ar 4 At least one of them is an aryl group having an electron withdrawing group.
- the electron withdrawing group of the formula (1) is a group having a function of decreasing the electron density, and examples thereof include a cyano group, fluorine, a halogenated alkyl group, a nitro group, and a carbonyl group. Of these, preferred are a cyano group, fluorine and a halogenated alkyl group, and particularly preferred is a cyano group. It is presumed that the lifetime can be extended by trapping excess electrons with these electron-withdrawing groups to suppress the entry of electrons into the hole transport material and preventing the deterioration of the hole transport material.
- the aromatic amine derivative of the formula (1) is preferably represented by the following formula (2).
- R 1 to R 10 are each a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkylsilyl group having 3 to 30 carbon atoms, a substituted or unsubstituted ring; An arylsilyl group having 8 to 30 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted aralkyl group having 6 to 20 ring carbon atoms, a substituted or unsubstituted ring carbon number 6 to 10 aryl groups or electron withdrawing groups are shown. At least one of R 1 to R 5 is an electron withdrawing group, and at least one of R 6 to R 10 is an electron withdrawing group. Ar 2 and Ar 4 may or may not have an electron-withdrawing group.
- any one of R 1 to R 5 is an electron withdrawing group, the other is a hydrogen atom, and any one of R 6 to R 10 is an electron withdrawing group, Is preferably a hydrogen atom.
- ring-forming carbon means a carbon atom constituting a saturated ring, an unsaturated ring, or an aromatic ring.
- Ring-forming atom means a carbon atom and a hetero atom constituting a hetero ring (including a saturated ring, an unsaturated ring, and an aromatic ring).
- substituents in “substituted or unsubstituted” include an alkyl group, an alkylsilyl group, a halogenated alkyl group, an aryl group, a cycloalkyl group, an alkoxy group, a heterocyclic group, and an aralkyl group as described later.
- the hydrogen atom of the compound of the present specification includes light hydrogen and deuterium. Specific examples of the groups and substituents of formulas (1) and (2) are given below.
- alkyl group examples include methyl group, ethyl group, propyl group, isopropyl group, n-butyl group, s-butyl group, isobutyl group, t-butyl group, n-pentyl group, n-hexyl group, n-heptyl group, An n-octyl group and the like can be mentioned.
- the alkyl group preferably has 1 to 10 carbon atoms, more preferably 1 to 8 carbon atoms, and still more preferably 1 to 6 carbon atoms.
- methyl, ethyl, propyl, isopropyl, n-butyl, s-butyl, isobutyl, t-butyl, n-pentyl and n-hexyl are preferred.
- the alkylsilyl group is represented as —SiY 3, and examples of Y include the above alkyl examples.
- aryl group examples include phenyl, naphthyl, anthryl, 1-phenanthryl, phenanthryl, naphthacenyl, pyrenyl, chrysenyl, benzo [c] phenanthryl, benzo [g] chrysenyl, triphenylenyl, Fluorenyl group, benzofluorenyl group, dibenzofluorenyl group, biphenylyl group, p-terphenyl-4-yl group, p-terphenyl-3-yl group, p-terphenyl-2-yl group, m -Terphenyl-4-yl group, m-terphenyl-3-yl group, m-terphenyl-2-yl group and the like.
- the ring-forming carbon number of the aryl group is preferably 6 to 20, more preferably 6 to 14, and further preferably 6 to 10.
- they are a phenyl group and a naph
- the arylsilyl group is represented as —SiZ 3, and examples of Z include the above examples of aryl.
- the alkoxy group is represented as -OY, and examples of Y include the above examples of alkyl or aryl.
- the aralkyl group is represented by —Y—Z.
- Y include alkylene examples corresponding to the above alkyl examples, and examples of Z include the above aryl examples.
- cycloalkyl group examples include a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, a cyclohexyl group, a 4-methylcyclohexyl group, a 1-adamantyl group, a 2-adamantyl group, a 1-norbornyl group, and a 2-norbornyl group.
- the ring-forming carbon number of the cycloalkyl group is preferably 3 to 10, more preferably 3 to 8, and further preferably 3 to 6. Examples of specific aromatic amine derivatives are shown below.
- the organic light-emitting medium of the present invention contains an aromatic amine derivative represented by the following formula (1) and an anthracene derivative represented by the following formula (10).
- R 101 to R 108 are each a hydrogen atom, a fluorine atom, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 10 carbon atoms, substituted or unsubstituted.
- Ar 11 represents a substituted group.
- R 111 represents a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms, or a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms.
- b is an integer of 0 to 7. When b is an integer of 2 or more, a plurality of R 111 may be the same or different.
- Ar 11 is a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, a phenyl group substituted by a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms, substituted or unsubstituted A 2-naphthyl group substituted by an aryl group having 6-30 ring-forming carbon atoms, or a substituted or unsubstituted heterocyclic group having 5-30 ring atoms, or a substituted or unsubstituted ring-forming carbon number 6-6 Or a heterocyclic group having 5 to 30 ring atoms substituted by a 30 aryl group or a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms.
- Ar 11 is a substituted or unsubstituted condensed heterocyclic group having 10 to 30 ring atoms.
- Ar 11 is a substituted or unsubstituted 2-naphthyl group.
- anthracene derivatives of the formula (10) are preferable.
- Ar 14 is a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 10 ring carbon atoms, Or a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms.
- Ar 14 includes 9,9-dimethylfluoren-1-yl group, 9,9-dimethylfluoren-2-yl group, 9,9-dimethylfluoren-3-yl group, and 9,9-dimethylfluorene-
- a 4-yl group, a dibenzofuran-1-yl group, a dibenzofuran-2-yl group, a dibenzofuran-3-yl group, or a dibenzofuran-4-yl group is also preferred.
- Ar 14 is a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms.
- anthracene derivative may be any one of the anthracene derivatives represented by the following formulas (12) to (18).
- Ar 12 and Ar 13 each represent a hydrogen atom, a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms, and Ar 12 represents A ring may be formed together with the naphthalene ring to which it is bonded.
- Ar 12 or Ar 13 is a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms.
- Ar 12 forms a ring together with a naphthalene ring to which Ar 12 is bonded, and the ring is a substituted or unsubstituted condensed heterocyclic group having 10 to 30 ring-forming atoms.
- Ar 13 is a hydrogen atom.
- Ar 15 is a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 10 ring carbon atoms, Or a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms.
- Ar 15 is preferably, for example, a dibenzofuran-1-yl group, a dibenzofuran-2-yl group, a dibenzofuran-3-yl group, or a dibenzofuran-4-yl group.
- Ar 15 is a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms.
- Ar 16 represents a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 10 ring carbon atoms. Or a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms.
- Ar 16 may form a ring together with the benzene ring to which Ar 16 is bonded.
- Ar 17 is a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 10 ring carbon atoms, Or a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms.
- Ar 16 or Ar 17 is a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms.
- Ar 16 forms a ring together with a benzene ring to which Ar 16 is bonded, and the ring is a substituted or unsubstituted condensed heterocyclic group having 10 to 30 ring atoms.
- Ar 16 forms a ring with a benzene ring to which Ar 16 is bonded, and the ring is a substituted or unsubstituted 2-naphthyl group.
- R 101 to R 108 are the same as described above.
- R 101 to R 108 are the same as described above.
- Ar 10 is a substituted or unsubstituted condensed aromatic ring group having 10 to 20 ring carbon atoms.
- R 101 to R 108 are the same as in formula (10).
- Ar 5a and Ar 6a are each independently a substituted or unsubstituted condensed aromatic ring group having 10 to 20 ring carbon atoms.
- Ar 18 is a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms.
- L is a single bond, a substituted or unsubstituted arylene group having 6 to 30 ring carbon atoms, or a divalent substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms.
- R 121 represents a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms, or a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms.
- n is an integer of 0 to 11. When n is an integer of 2 or more, the plurality of R 121 may be the same or different. )
- Ar 18 is an aryl group having 6 to 30 ring carbon atoms substituted with an aryl group having 6 to 30 ring carbon atoms or a heterocyclic group having 5 to 30 ring atoms, or A heterocyclic group having 5 to 30 ring atoms.
- L is a single bond.
- L is a single bond, a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms or a divalent substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms.
- Ar 19 is a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms.
- X 11 represents an oxygen atom, a sulfur atom, —NR— or —CR a R b , and R, R a , and R b each represent the same group as R 101 to R 108 .
- R 121 represents a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms, or a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms.
- m is an integer of 0 to 7. When m is an integer of 2 or more, the plurality of R 121 may be the same or different. )
- Ar 19 is an aryl group having 6 to 30 ring carbon atoms or an aryl group having 6 to 30 ring carbon atoms substituted by a heterocyclic group having 5 to 30 ring atoms. Or a heterocyclic group having 5 to 30 ring atoms.
- R 101 to R 108 are the same as in formula (10).
- Ar 20 represents a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms.
- R 201 represents a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms, or a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms.
- p is an integer of 0-4. When p is an integer of 2 or more, a plurality of R 201 may be the same or different.
- Ar 20 is an aryl group having 6 to 30 ring carbon atoms, an aryl group having 6 to 30 ring carbon atoms substituted by a heterocyclic group having 5 to 30 ring atoms, or 5 ring atoms. 30 heterocyclic groups.
- R 101 to R 108 are the same as in formula (10).
- Ar 20 and R 201 are the same as those in the formula (17).
- R 301 represents a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms, or a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms.
- p is an integer of 0-4. When p is an integer of 2 or more, a plurality of R 201 may be the same or different.
- q is an integer of 0 to 11. When q is an integer of 2 or more, a plurality of R 301 may be the same or different, and adjacent substituents may form a saturated or unsaturated ring.
- the aryl groups having 6 to 30 ring carbon atoms of R 101 to R 108 , R 111 , R 121 , R 201 , R 301 , Ar 12 to Ar 20 , and Ar 101 to Ar 106 in the above formulas include a phenyl group, Naphthyl, anthryl, phenanthryl, naphthacenyl, pyrenyl, chrysenyl, benzo [c] phenanthryl, benzo [g] chrysenyl, benzo [a] anthryl, triphenylenyl, fluorenyl, 9,9-dimethyl Fluoren-2-yl group, benzofluorenyl group, dibenzofluorenyl group, biphenylyl group, p-terphenyl-4-yl group, p-terphenyl-3-yl group, p-terphenyl-2- Yl group, m-terphenyl-4-yl group, m
- an unsubstituted phenyl group, a substituted phenyl group, a substituted or unsubstituted aryl group having 10 to 14 ring carbon atoms eg, 1-naphthyl group, 2-naphthyl group, 9-phenanthryl group
- substituted or unsubstituted A substituted fluorenyl group (2-fluorenyl group) and a substituted or unsubstituted pyrenyl group (1-pyrenyl group, 2-pyrenyl group, 4-pyrenyl group).
- the aryl group having 6 to 30 ring carbon atoms may be substituted with a substituent such as an alkyl group, a cycloalkyl group, an aryl group, a heterocyclic group, and the substituents that may be substituted are described above. The same group as a substituent is mentioned.
- the substituent which may be substituted is preferably an aryl group or a heterocyclic group.
- Examples of the condensed aromatic ring group having 10 to 20 ring carbon atoms of Ar 5a , Ar 6a and Ar 10 include 1-naphthyl group, 2-naphthyl group, 1-anthryl group, 2-anthryl group, 9-anthryl group, 1-phenanthryl group, 2-phenanthryl group, 3-phenanthryl group, 4-phenanthryl group, 9-phenanthryl group, 1-naphthacenyl group, 2-naphthacenyl group, 9-naphthacenyl group, 1-pyrenyl group, 2-pyrenyl group, Examples include 4-pyrenyl group and 2-fluorenyl group.
- a 1-naphthyl group, a 2-naphthyl group, a 9-phenanthryl group, and a fluorenyl group (2-fluorenyl group) are preferable.
- the condensed aromatic ring group having 16 to 30 ring carbon atoms of Ar 201 include a triphenylenyl group, a pyrenyl group, a chrysenyl group, a benzo [c] phenanthryl group, a benzo [g] chrysenyl group, A benzo [c] phenanthryl group and a benzo [g] chrysenyl group are preferred.
- the condensed aromatic ring group may be substituted with a substituent such as an alkyl group, a cycloalkyl group, an aryl group, or a heterocyclic group, and these substituents that may be substituted are the same as the above-described substituents.
- a substituent such as an alkyl group, a cycloalkyl group, an aryl group, or a heterocyclic group, and these substituents that may be substituted are the same as the above-described substituents.
- the substituent which may be substituted is preferably an aryl group or a heterocyclic group.
- Examples of the heterocyclic group having 5 to 30 ring atoms of R 101 to R 108 , R 111 , Ar 12 to Ar 20 , Ar 101 to Ar 106 include a pyrrolyl group, a pyrazinyl group, a pyridinyl group, an indolyl group, an isoindolyl group, Furyl, benzofuranyl, isobenzofuranyl, dibenzofuranyl, dibenzothiophenyl, quinolyl, isoquinolyl, quinoxalinyl, carbazolyl, phenanthridinyl, acridinyl, phenanthronyl, phenazinyl, phenoyl Thiazinyl group, phenoxazinyl group, oxazolyl group, oxadiazolyl group, furazanyl group, thienyl group, methylpyrrolyl group, 2-t-butylpyrrolyl group, 3- (2-
- a dibenzofuranyl group, a dibenzothiophenyl group, and a carbazolyl group are preferable.
- Examples of the condensed heterocyclic group having 10 to 30 ring atoms of Ar 201 include a quinolyl group and a dibenzofuranyl group, and a dibenzofuranyl group is particularly preferable.
- the heterocyclic group having 5 to 30 ring atoms may be substituted with a substituent such as an alkyl group, a cycloalkyl group, an aryl group, or a heterocyclic group. And the same groups as those described above.
- the substituent which may be substituted is preferably an aryl group or a heterocyclic group.
- Examples of the alkyl group having 1 to 10 carbon atoms of R 101 to R 108 , R 111 , R 121 , R 201 , R 301 and Ar 14 to Ar 17 include a methyl group, an ethyl group, a propyl group, an isopropyl group, and n-butyl.
- s-butyl group isobutyl group, t-butyl group, n-pentyl group, n-hexyl group, n-heptyl group, n-octyl group, hydroxymethyl group, 1-hydroxyethyl group, 2-hydroxyethyl group 2-hydroxyisobutyl group, 1,2-dihydroxyethyl group, 1,3-dihydroxyisopropyl group, 2,3-dihydroxy-t-butyl group, 1,2,3-trihydroxypropyl group, aminomethyl group, 1 -Aminoethyl group, 2-aminoethyl group, 2-aminoisobutyl group, 1,2-diaminoethyl group, 1,3-diaminoisopropyl 2,3-diamino-t-butyl group, 1,2,3-triaminopropyl group, cyanomethyl group, 1-cyanoethyl group, 2-cyanoethyl group, 2-cyano
- the alkyl group preferably has 1 to 10 carbon atoms, more preferably 1 to 8 carbon atoms, and still more preferably 1 to 6 carbon atoms. Preferred are methyl group, ethyl group, propyl group, isopropyl group, n-butyl group, s-butyl group, isobutyl group and t-butyl group.
- the alkyl group having 1 to 10 carbon atoms may be substituted with a substituent such as an alkyl group, a cycloalkyl group, an aryl group, a heterocyclic group, and the substituents that may be substituted are the substituents described above. The same group is mentioned.
- the substituent which may be substituted is preferably an aryl group or a heterocyclic group.
- Examples of the cycloalkyl group having 3 to 10 ring carbon atoms of R 101 to R 108 , R 111 , R 121 , R 201 , R 301 and Ar 14 to Ar 17 include a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, and a cyclohexyl group. 4-methylcyclohexyl group, 1-adamantyl group, 2-adamantyl group, 1-norbornyl group, 2-norbornyl group and the like. Preferably, they are a cyclopentyl group and a cyclohexyl group.
- the ring-forming carbon number of the cycloalkyl group is preferably 3 to 10, more preferably 3 to 8, and further preferably 3 to 6.
- the cycloalkyl group having 3 to 10 ring carbon atoms may be substituted with a substituent such as an alkyl group, a cycloalkyl group, an aryl group, or a heterocyclic group. And the same groups as those described above.
- the substituent which may be substituted is preferably an aryl group or a heterocyclic group.
- Examples of the alkylsilyl group and arylsilyl group of R 101 to R 108 , R 111 , R 121 , R 201 , and R 301 include a trimethylsilyl group, a triethylsilyl group, a t-butyldimethylsilyl group, a vinyldimethylsilyl group, and a propyldimethylsilyl group. Group, triphenylsilyl group and the like.
- the silyl group may be substituted with a substituent such as an alkyl group, a cycloalkyl group, an aryl group, or a heterocyclic group, and examples of the substituent that may be substituted include the same groups as those described above. It is done.
- the substituent which may be substituted is preferably an aryl group or a heterocyclic group.
- the alkoxy group having 1 to 20 carbon atoms of R 101 to R 108 , R 111 , R 121 , R 201 , and R 301 is a group represented by —OZ, and Z is a substituted or non-substituted group of R 101 to R 108. Selected from substituted alkyl groups.
- the alkyl group may be substituted with a substituent such as an alkyl group, a cycloalkyl group, an aryl group, or a heterocyclic group. Examples of the substituent that may be substituted include the same groups as the above-described substituents. It is done.
- the substituent which may be substituted is preferably an aryl group or a heterocyclic group.
- the aryloxy group having 6 to 20 carbon atoms of R 101 to R 108 , R 111 , R 121 , R 201 , and R 301 is a group represented by —OZ, and Z is a substituent of R 101 to R 108 or Selected from unsubstituted aryl groups.
- the aryl group may be substituted with a substituent such as an alkyl group, a cycloalkyl group, an aryl group, or a heterocyclic group, and examples of the substituent that may be substituted include the same groups as the above-described substituents. .
- the substituent which may be substituted is preferably an aryl group or a heterocyclic group.
- Examples of the heterocyclic group include the above-described divalent groups of an aryl group and a heterocyclic group.
- an anthracene derivative including the above it is considered that energy transfer to the dopant is likely to occur due to an increase in the host molecule, resulting in high efficiency and long life.
- the ring is deficient in ⁇ electrons, so that it easily interacts with an electron-rich dopant having a tertiary amino group, and energy transfer easily occurs. It is considered to be efficient and long life.
- the medium of the present invention is a combination of the aromatic amine derivative represented by the above formula (1) and the anthracene derivative represented by the formula (I), (II), (III) or (10) to (18). By using it, the light emission life can be improved. In addition, since the aryl group of the diarylamino group has an electron-withdrawing group, blue light emission (for example, a wavelength of 460 nm or less) having a shorter emission wavelength than before can be obtained.
- anthracene derivative used in the present invention include the following.
- the aromatic amine derivative is preferably contained as a doping material (dopant).
- the content of the aromatic amine derivative is preferably 0.1 to 20% by mass, and more preferably 1 to 10% by mass.
- the anthracene derivative becomes the host material, and the amount of the host material and the dopant material is usually 100% by mass.
- one or more organic thin film layers including at least a light emitting layer are sandwiched between a cathode and an anode. And at least 1 layer of an organic thin film layer has an organic thin film which consists of an organic luminescent medium of this invention.
- the above aromatic amine derivative and the above anthracene derivative can be used for a hole injection layer, a hole transport layer, an electron injection layer, and an electron transport layer in addition to the light emitting layer.
- organic EL elements having a plurality of organic thin film layers are (anode / hole injection layer / light emitting layer / cathode), (anode / light emitting layer / electron injection layer / cathode), (anode / hole).
- examples thereof include those laminated in a configuration of injection layer / light emitting layer / electron injection layer / cathode), (anode / hole injection layer / hole transport layer / light emitting layer / electron injection layer / cathode), and the like.
- the organic EL element can prevent luminance and lifetime from being reduced due to quenching by forming the organic thin film layer into a multi-layer structure.
- a light emitting material, a doping material, a hole injection material, and an electron injection material can be used in combination.
- the hole injection layer, the light emitting layer, and the electron injection layer may each be formed of two or more layers. In that case, in the case of a hole injection layer, the layer that injects holes from the electrode is a hole injection layer, and the layer that receives holes from the hole injection layer and transports holes to the light emitting layer is a hole transport layer. Call.
- an electron injection layer a layer for injecting electrons from an electrode is called an electron injection layer, and a layer for receiving electrons from the electron injection layer and transporting electrons to a light emitting layer is called an electron transport layer.
- an electron injection layer a layer for injecting electrons from an electrode
- an electron transport layer a layer for receiving electrons from the electron injection layer and transporting electrons to a light emitting layer.
- Each of these layers is selected and used depending on factors such as the energy level of the material, heat resistance, and adhesion to the organic layer or metal electrode.
- Examples of materials other than the anthracene derivative that can be used in the light emitting layer together with the aromatic amine derivative include, for example, naphthalene, phenanthrene, rubrene, tetracene, pyrene, perylene, chrysene, decacyclene, coronene, tetraphenylcyclopentadiene, pentaphenylcyclopentadiene.
- Condensed polycyclic aromatic compounds such as fluorene and spirofluorene and their derivatives, organometallic complexes such as tris (8-quinolinolato) aluminum, triarylamine derivatives, styrylamine derivatives, stilbene derivatives, coumarin derivatives, pyran derivatives, oxazones Derivatives, benzothiazole derivatives, benzoxazole derivatives, benzimidazole derivatives, pyrazine derivatives, cinnamic acid ester derivatives, diketopyrrolopyrrole derivatives, acrid Derivatives, quinacridone derivatives, and the like, but is not limited thereto.
- organometallic complexes such as tris (8-quinolinolato) aluminum, triarylamine derivatives, styrylamine derivatives, stilbene derivatives, coumarin derivatives, pyran derivatives, oxazones Derivatives, benzothiazole derivatives
- a hole injection material a compound having the ability to transport holes, the hole injection effect from the anode, the hole injection effect excellent for the light emitting layer or the light emitting material, and the thin film forming ability Is preferred.
- phthalocyanine derivatives naphthalocyanine derivatives, porphyrin derivatives, benzidine-type triphenylamine, diamine-type triphenylamine, hexacyanohexaazatriphenylene, and derivatives thereof, and polyvinylcarbazole, polysilane, conductive polymers, etc. Examples include, but are not limited to, polymer materials.
- a more effective hole injection material is a phthalocyanine derivative.
- phthalocyanine (Pc) derivatives examples include H2Pc, CuPc, CoPc, NiPc, ZnPc, PdPc, FePc, MnPc, ClAlPc, ClGaPc, ClInPc, ClSnPc, Cl2SiPc, (HO) AlPc, (HO) GaPc, VOPc, and OPP Examples include, but are not limited to, phthalocyanine derivatives and naphthalocyanine derivatives such as MoOPc and GaPc-O-GaPc.
- carriers can be sensitized by adding an electron acceptor such as a TCNQ derivative to the hole injection material.
- a preferred hole transport material that can be used in the organic EL device of the present invention is an aromatic tertiary amine derivative.
- the aromatic tertiary amine derivative include N, N′-diphenyl-N, N′-dinaphthyl-1,1′-biphenyl-4,4′-diamine, N, N, N ′, N′-tetra Biphenyl-1,1′-biphenyl-4,4′-diamine or the like, or an oligomer or polymer having an aromatic tertiary amine skeleton is not limited thereto.
- the electron injecting material a compound having an ability to transport electrons, an electron injecting effect from the cathode, an excellent electron injecting effect for the light emitting layer or the light emitting material, and an excellent thin film forming ability is preferable.
- more effective electron injection materials are metal complex compounds and nitrogen-containing heterocyclic derivatives.
- the metal complex compound include 8-hydroxyquinolinate lithium, bis (8-hydroxyquinolinato) zinc, tris (8-hydroxyquinolinato) aluminum, tris (8-hydroxyquinolinato) gallium, bis. (10-Hydroxybenzo [h] quinolinato) beryllium, bis (10-hydroxybenzo [h] quinolinato) zinc, and the like are exemplified, but not limited thereto.
- these electron injection materials further contain a dopant, and more preferably, a dopant typified by an alkali metal is doped in the vicinity of the cathode interface of the second organic layer in order to facilitate the reception of electrons from the cathode.
- the dopant include a donor metal, a donor metal compound, and a donor metal complex. These reducing dopants may be used alone or in combination of two or more.
- the organic EL device of the present invention in addition to at least one selected from the aromatic amine derivatives represented by the formula (1) in the light emitting layer, a light emitting material, a doping material, a hole injection material, and a hole transport At least one of the material and the electron injection material may be contained in the same layer.
- a protective layer is provided on the surface of the device, or the entire device is protected by silicon oil, resin, etc. Is also possible.
- a material having a work function larger than 4 eV is suitable, and carbon, aluminum, vanadium, iron, cobalt, nickel, tungsten, silver, gold, platinum Palladium, etc. and their alloys, metal oxides such as tin oxide and indium oxide used for ITO substrates and NESA substrates, and organic conductive resins such as polythiophene and polypyrrole are used.
- Suitable conductive materials for the cathode are those having a work function smaller than 4 eV, such as magnesium, calcium, tin, lead, titanium, yttrium, lithium, ruthenium, manganese, aluminum, lithium fluoride, and the like.
- alloys include magnesium / silver, magnesium / indium, lithium / aluminum, and the like, but are not limited thereto.
- the ratio of the alloy is controlled by the temperature of the vapor deposition source, the atmosphere, the degree of vacuum, etc., and is selected to an appropriate ratio. If necessary, the anode and the cathode may be formed of two or more layers.
- the organic EL device of the present invention in order to emit light efficiently, it is desirable that at least one surface be sufficiently transparent in the light emission wavelength region of the device.
- the substrate is also preferably transparent.
- the transparent electrode is set using the above-described conductive material so that predetermined translucency is ensured by a method such as vapor deposition or sputtering.
- the electrode on the light emitting surface preferably has a light transmittance of 10% or more.
- the substrate is not limited as long as it has mechanical and thermal strength and has transparency, and includes a glass substrate and a transparent resin film.
- Each layer of the organic EL device of the present invention can be formed by applying any one of dry deposition methods such as vacuum deposition, sputtering, plasma and ion plating, and wet deposition methods such as spin coating, dipping and flow coating. Can do.
- the film thickness is not particularly limited, but must be set to an appropriate film thickness. If the film thickness is too thick, a large applied voltage is required to obtain a constant light output, resulting in poor efficiency. If the film thickness is too thin, pinholes and the like are generated, and sufficient light emission luminance cannot be obtained even when an electric field is applied.
- the normal film thickness is suitably in the range of 5 nm to 10 ⁇ m, but more preferably in the range of 10 nm to 0.2 ⁇ m.
- the material for forming each layer is dissolved or dispersed in an appropriate solvent such as ethanol, chloroform, tetrahydrofuran, dioxane or the like to form a thin film, and any solvent may be used.
- an appropriate resin or additive may be used for improving the film formability and preventing pinholes in the film.
- the organic EL device of the present invention can be used for a flat light emitter such as a flat panel display of a wall-mounted television, a copying machine, a printer, a light source such as a backlight of a liquid crystal display or instruments, a display board, a marker lamp, and the like.
- the compound of this invention can be used not only in an organic EL element but in fields, such as an electrophotographic photoreceptor, a photoelectric conversion element, a solar cell, an image sensor.
- Example 1 A 25 mm ⁇ 75 mm ⁇ 1.1 mm thick glass substrate with ITO transparent electrode (anode) (manufactured by Geomatic) was ultrasonically cleaned in isopropyl alcohol for 5 minutes, and then UV ozone cleaning was performed for 30 minutes.
- a glass substrate with a transparent electrode line after washing is mounted on a substrate holder of a vacuum deposition apparatus, and first, a compound A-1 having a film thickness of 50 nm is formed so as to cover the transparent electrode on the surface on which the transparent electrode line is formed. Was deposited. Subsequent to the formation of the A-1 film, A-2 having a film thickness of 45 nm was formed on the A-1 film.
- the compound EM13 and the compound DM-1 were formed in a film thickness ratio of 20: 1 with a film thickness of 20 nm to form a blue light emitting layer.
- an ET-1 having a thickness of 30 nm as an electron transport layer was formed by vapor deposition.
- LiF was formed to a thickness of 1 nm.
- metal Al was deposited to a thickness of 150 nm to form a metal cathode, thereby producing an organic EL light emitting device.
- Example 2-54, Comparative Example 1-9 An organic EL device was produced in the same manner as in Example 1 except that the host material and the doping material were changed as shown in Tables 1 and 2. The doping materials used in each example are shown below.
- the host materials used in the comparative examples are shown below.
- a current density of 10 mA / cm 2 was passed through the organic EL elements produced in the above examples and comparative examples, and the emission spectrum was measured with a spectral radiance meter (CS1000: manufactured by Minolta). The quantum yield was calculated. The lifetime was evaluated by a half-life at an initial luminance of 500 cd / m 2 . The results are shown in Tables 1 and 2.
- N P Number of photons
- N E Number of electrons
- ⁇ Emission intensity (W / sr ⁇ m 2 ⁇ nm)
- J Current density (mA / cm 2 )
- the combination of the host material and the dopant material of the present invention has a tendency to achieve a significant blue coloration and a longer life than the prior art. As a result, it is possible to realize a display device having a long life and high color reproducibility.
- the organic EL device of the present invention can be used for a flat light emitter such as a flat panel display of a wall-mounted television, a copying machine, a printer, a light source such as a backlight of a liquid crystal display or instruments, a display board, a marker lamp, and the like.
- a flat light emitter such as a flat panel display of a wall-mounted television, a copying machine, a printer, a light source such as a backlight of a liquid crystal display or instruments, a display board, a marker lamp, and the like.
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Abstract
Description
発光層に使用される材料の例として、特許文献1-8にはジアミノピレン誘導体が記載されている。特に、特許文献1及び2には、短波長の青色発光が得られることが記載されている。しかしながら、発光寿命が短いという問題があった。
1.下記式(1)で表される芳香族アミン誘導体と下記式(I)で表されるアントラセン誘導体とを含有する有機発光媒体。
式(I)中、R101~R108はそれぞれ水素原子、フッ素原子、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の炭素数3~10のシクロアルキル基、置換もしくは無置換の炭素数3~30のアルキルシリル基、置換もしくは無置換の環形成炭素数8~30のアリールシリル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換の環形成炭素数6~20のアリールオキシ基、置換もしくは無置換の環形成炭素数6~30のアリール基、又は置換もしくは無置換の環形成原子数5~30の複素環基を示し、
Ar101~Ar104は、置換もしくは無置換の環形成炭素数6~30のアリール基、又は置換もしくは無置換の環形成原子数5~30の複素環基である。
Xは0~3の整数であり、
Yは1~3の整数である。]
2.下記式(1)で表される芳香族アミン誘導体と下記式(II)で表されるアントラセン誘導体とを含有する有機発光媒体。
式(II)中、R101~R108はそれぞれ水素原子、フッ素原子、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の炭素数3~10のシクロアルキル基、置換もしくは無置換の炭素数3~30のアルキルシリル基、置換もしくは無置換の環形成炭素数8~30のアリールシリル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換の環形成炭素数6~20のアリールオキシ基、置換もしくは無置換の環形成炭素数6~30のアリール基、又は置換もしくは無置換の環形成原子数5~30の複素環基を示し、
Ar105は、置換もしくは無置換の環形成炭素数6~30のアリール基、又は置換もしくは無置換の環形成原子数5~30の複素環基である。
Ar201は、置換もしくは無置換の環形成炭素数16~30縮合芳香族環基、又は置換もしくは無置換の環形成原子10~30の縮合複素環基である。]
3.下記式(1)で表される芳香族アミン誘導体と下記式(III)で表されるアントラセン誘導体とを含有する有機発光媒体。
式(III)中、R101~R108はそれぞれ水素原子、フッ素原子、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の炭素数3~10のシクロアルキル基、置換もしくは無置換の炭素数3~30のアルキルシリル基、置換もしくは無置換の環形成炭素数8~30のアリールシリル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換の環形成炭素数6~20のアリールオキシ基、置換もしくは無置換の環形成炭素数6~30のアリール基、又は置換もしくは無置換の環形成原子数5~30の複素環基を示し、
Ar106は、置換もしくは無置換の環形成炭素数6~30のアリール基、又は置換もしくは無置換の環形成原子数5~30の複素環基である。
Ar301は、置換もしくは無置換の2-ナフチル基、置換もしくは無置換のフルオレニル基である。但し、Ar106とAr301は異なる。]
4.下記式(1)で表される芳香族アミン誘導体と下記式(10)で表されるアントラセン誘導体とを含有する有機発光媒体。
式(10)中、R101~R108はそれぞれ水素原子、フッ素原子、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の炭素数3~10のシクロアルキル基、置換もしくは無置換の炭素数3~30のアルキルシリル基、置換もしくは無置換の環形成炭素数8~30のアリールシリル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換の環形成炭素数6~20のアリールオキシ基、置換もしくは無置換の環形成炭素数6~30のアリール基、又は置換もしくは無置換の環形成原子数5~30の複素環基を示し、
Ar11は、置換もしくは無置換のフェニル基、置換もしくは無置換の2-ナフチル基、又は置換もしくは無置換の環形成原子数5~30の複素環基を示す。
R111は、置換もしくは無置換の環形成炭素数6~30のアリール基、置換もしくは無置換の環形成原子数5~30の複素環基、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の環形成炭素数3~10のシクロアルキル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換のシリル基、シアノ基、又はフッ素原子である。
bは0~7の整数である。bが2以上の整数の場合、複数あるR111は、同一でも異なっていてもよい。]
5.前記アントラセン誘導体が、下記式(11)で表される4に記載の有機発光媒体。
Ar14は置換もしくは無置換の環形成炭素数6~30のアリール基、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の環形成炭素数3~10のシクロアルキル基、又は置換もしくは無置換の環形成原子数5~30の複素環基である。)
6.下記式(1)で表される芳香族アミン誘導体と下記式(12)で表されるアントラセン誘導体とを含有する有機発光媒体。
式(12)中、R101~R108はそれぞれ水素原子、フッ素原子、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の炭素数3~10のシクロアルキル基、置換もしくは無置換の炭素数3~30のアルキルシリル基、置換もしくは無置換の環形成炭素数8~30のアリールシリル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換の環形成炭素数6~20のアリールオキシ基、置換もしくは無置換の環形成炭素数6~30のアリール基、又は置換もしくは無置換の環形成原子数5~30の複素環基を示し、
Ar12,Ar13は、それぞれ、水素原子、環形成炭素数6~30のアリール基又は置換もしくは無置換の環形成原子数5~30の複素環基を示し、Ar12はそれが結合しているナフタレン環と共に環を形成していてもよい。)
7.下記式(1)で表される芳香族アミン誘導体と下記式(13)で表されるアントラセン誘導体とを含有する有機発光媒体。
式(13)中、R101~R108、R111はそれぞれ水素原子、フッ素原子、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の炭素数3~10のシクロアルキル基、置換もしくは無置換の炭素数3~30のアルキルシリル基、置換もしくは無置換の環形成炭素数8~30のアリールシリル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換の環形成炭素数6~20のアリールオキシ基、置換もしくは無置換の環形成炭素数6~30のアリール基、又は置換もしくは無置換の環形成原子数5~30の複素環基を示し、
Ar15は置換もしくは無置換の環形成炭素数6~30のアリール基、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の環形成炭素数3~10のシクロアルキル基、又は置換もしくは無置換の環形成原子数5~30の複素環基である。
bは0~7の整数である。bが2以上の整数の場合、複数あるR111は、同一でも異なっていてもよい。)
8.下記式(1)で表される芳香族アミン誘導体と下記式(14)で表されるアントラセン誘導体とを含有する有機発光媒体。
式(14)中、R101~R108はそれぞれ水素原子、フッ素原子、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の炭素数3~10のシクロアルキル基、置換もしくは無置換の炭素数3~30のアルキルシリル基、置換もしくは無置換の環形成炭素数8~30のアリールシリル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換の環形成炭素数6~20のアリールオキシ基、置換もしくは無置換の環形成炭素数6~30のアリール基、又は置換もしくは無置換の環形成原子数5~30の複素環基を示し、
Ar16は、置換もしくは無置換の環形成炭素数6~30のアリール基、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の環形成炭素数3~10のシクロアルキル基、又は置換もしくは無置換の環形成原子数5~50の複素環基である。また、Ar16はそれが結合しているベンゼン環と共に環を形成していてもよい。
Ar17は置換もしくは無置換の環形成炭素数6~30のアリール基、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の環形成炭素数3~10のシクロアルキル基、又は置換もしくは無置換の環形成原子数5~30の複素環基である。)
9.下記式(1)で表される芳香族アミン誘導体と下記式(15)で表されるアントラセン誘導体とを含有する有機発光媒体。
式(15)中、R101~R108は、それぞれ水素原子、フッ素原子、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の炭素数3~10のシクロアルキル基、置換もしくは無置換の炭素数3~30のアルキルシリル基、置換もしくは無置換の環形成炭素数8~30のアリールシリル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換の環形成炭素数6~20のアリールオキシ基、置換もしくは無置換の環形成炭素数6~30のアリール基、又は置換もしくは無置換の環形成原子数5~30の複素環基を示し、
Ar18は置換もしくは無置換の環形成炭素数6~30のアリール基、又は置換もしくは無置換の環形成原子数5~30の複素環基である。
Lは、単結合、置換もしくは無置換の環形成炭素数6~30のアリーレン基又は2価の置換もしくは無置換の環形成原子数5~30の複素環基である。
R121は、置換もしくは無置換の環形成炭素数6~30のアリール基、置換もしくは無置換の環形成原子数5~30の複素環基、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の環形成炭素数3~10のシクロアルキル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換のシリル基、シアノ基、又はフッ素原子である。
nは0~11の整数である。nが2以上の整数の場合、複数あるR121は、同一でも異なっていてもよい。)
10.下記式(1)で表される芳香族アミン誘導体と下記式(16)で表されるアントラセン誘導体とを含有する有機発光媒体。
式(16)中、R101~R108は、それぞれ水素原子、フッ素原子、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の炭素数3~10のシクロアルキル基、置換もしくは無置換の炭素数3~30のアルキルシリル基、置換もしくは無置換の環形成炭素数8~30のアリールシリル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換の環形成炭素数6~20のアリールオキシ基、置換もしくは無置換の環形成炭素数6~30のアリール基、又は置換もしくは無置換の環形成原子数5~30の複素環基を示し、
Lは、単結合、置換もしくは無置換の環形成炭素数6~50のアリーレン基又は2価の置換もしくは無置換の環形成原子数5~50の複素環基である。
Ar19は置換もしくは無置換の環形成炭素数6~30のアリール基、又は置換もしくは無置換の環形成原子数5~30の複素環基である。
X11は酸素原子、硫黄原子、-NR-又は-CRaRbであり、R、Ra、Rbは、それぞれR101~R108と同様な基を示す。
R121は、置換もしくは無置換の環形成炭素数6~30のアリール基、置換もしくは無置換の環形成原子数5~30の複素環基、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の環形成炭素数3~10のシクロアルキル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換のシリル基、シアノ基、又はフッ素原子である。
mは0~7の整数である。mが2以上の整数の場合、複数あるR121は、同一でも異なっていてもよい。)
11.下記式(1)で表される芳香族アミン誘導体と下記式(17)で表されるアントラセン誘導体とを含有する有機発光媒体。
式(17)中、R101~R108は、それぞれ水素原子、フッ素原子、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の炭素数3~10のシクロアルキル基、置換もしくは無置換の炭素数3~30のアルキルシリル基、置換もしくは無置換の環形成炭素数8~30のアリールシリル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換の環形成炭素数6~20のアリールオキシ基、置換もしくは無置換の環形成炭素数6~30のアリール基、又は置換もしくは無置換の環形成原子数5~30の複素環基を示し、
Ar20は、置換もしくは無置換の環形成炭素数6~30のアリール基又は置換もしくは無置換の環形成原子数5~30の複素環基を示す。
R201は、置換もしくは無置換の環形成炭素数6~30のアリール基、置換もしくは無置換の環形成原子数5~30の複素環基、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の環形成炭素数3~10のシクロアルキル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換のシリル基、シアノ基、又はフッ素原子である。
pは0~4の整数である。pが2以上の整数の場合、複数あるR201は、同一でも異なっていてもよい。)
12.下記式(1)で表される芳香族アミン誘導体と下記式(18)で表されるアントラセン誘導体とを含有する有機発光媒体。
式(18)中、R101~R108は、それぞれ水素原子、フッ素原子、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の炭素数3~10のシクロアルキル基、置換もしくは無置換の炭素数3~30のアルキルシリル基、置換もしくは無置換の環形成炭素数8~30のアリールシリル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換の環形成炭素数6~20のアリールオキシ基、置換もしくは無置換の環形成炭素数6~30のアリール基、又は置換もしくは無置換の環形成原子数5~30の複素環基を示し、
Ar20は、置換もしくは無置換の環形成炭素数6~30のアリール基又は置換もしくは無置換の環形成原子数5~30の複素環基を示す。
R201、R301は、置換もしくは無置換の環形成炭素数6~30のアリール基、置換もしくは無置換の環形成原子数5~30の複素環基、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の環形成炭素数3~10のシクロアルキル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換のシリル基、シアノ基、又はフッ素原子である。
pは0~4の整数である。pが2以上の整数の場合、複数あるR201は、同一でも異なっていてもよい。qは0~11の整数である。qが2以上の整数の場合、複数あるR301は、同1でも異なっていてもよく、隣接する置換基同士で飽和または不飽和の環を形成してもよい。)
13.前記芳香族アミン誘導体が、下記式(2)で表される1~12のいずれかに記載の有機発光媒体。
R1~R10は、それぞれ、水素原子、ハロゲン原子、置換もしくは無置換の炭素数1~20のアルキル基、置換もしくは無置換の炭素数3~30のアルキルシリル基、置換もしくは無置換の環形成炭素数8~30のアリールシリル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換の環形成炭素数6~20のアラルキル基、置換もしくは無置換の環形成炭素数6~10のアリール基又は電子吸引性基を示す。
R1~R5の少なくとも1つが電子吸引性基で、かつ、R6~R10の少なくとも1つが電子吸引性基である。)
14.前記R1~R5のいずれか1つが電子吸引性基であり、他が水素原子であり、
前記R6~R10のいずれか1つが電子吸引性基であり、他が水素原子である13記載の有機発光媒体。
15.電子吸引性基がシアノ基である1~14のいずれかに記載の有機発光媒体。
16.1~15のいずれかに記載の有機発光媒体からなる有機薄膜。
17.陰極と陽極の間に少なくとも発光層を含む1以上の有機薄膜層が挟持されている有機エレクトロルミネッセンス素子において、該有機薄膜層の少なくとも1層が、16に記載の有機薄膜である有機エレクトロルミネッセンス素子。
式(I)中、R101~R108はそれぞれ水素原子、フッ素原子、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の炭素数3~10のシクロアルキル基、置換もしくは無置換の炭素数3~30のアルキルシリル基、置換もしくは無置換の環形成炭素数8~30のアリールシリル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換の環形成炭素数6~20のアリールオキシ基、置換もしくは無置換の環形成炭素数6~30のアリール基、又は置換もしくは無置換の環形成原子数5~30の複素環基を示し、
Ar101~Ar104は、置換もしくは無置換の環形成炭素数6~30のアリール基、又は置換もしくは無置換の環形成原子数5~30の複素環基である。
Xは0~3の整数であり、
Yは1~3の整数である。]
式(II)中、R101~R108はそれぞれ水素原子、フッ素原子、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の炭素数3~10のシクロアルキル基、置換もしくは無置換の炭素数3~30のアルキルシリル基、置換もしくは無置換の環形成炭素数8~30のアリールシリル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換の環形成炭素数6~20のアリールオキシ基、置換もしくは無置換の環形成炭素数6~30のアリール基、又は置換もしくは無置換の環形成原子数5~30の複素環基を示し、
Ar105は、置換もしくは無置換の環形成炭素数6~30のアリール基、又は置換もしくは無置換の環形成原子数5~30の複素環基である。
Ar201は、置換もしくは無置換の環形成炭素数16~30縮合芳香族環基、又は置換もしくは無置換の環形成原子10~30の縮合複素環基である。]
式(III)中、R101~R108はそれぞれ水素原子、フッ素原子、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の炭素数3~10のシクロアルキル基、置換もしくは無置換の炭素数3~30のアルキルシリル基、置換もしくは無置換の環形成炭素数8~30のアリールシリル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換の環形成炭素数6~20のアリールオキシ基、置換もしくは無置換の環形成炭素数6~30のアリール基、又は置換もしくは無置換の環形成原子数5~30の複素環基を示し、
Ar106は、置換もしくは無置換の環形成炭素数6~30のアリール基、又は置換もしくは無置換の環形成原子数5~30の複素環基である。
Ar301は、置換もしくは無置換の2-ナフチル基、置換もしくは無置換のフルオレニル基である。但し、Ar106とAr301は異なる。]
Ar106とAr301は同じ構造の基であってもそのアントラセン骨格への結合位置が違えば、異なるとする。
式(1)の電子吸引性基としては、電子密度を減弱させるという機能を有する基であり、例えば、シアノ基、フッ素、ハロゲン化アルキル基、ニトロ基、カルボニル基等が挙げられる。このなかで、好ましくはシアノ基、フッ素、ハロゲン化アルキル基であり、特に好ましくはシアノ基である。これら電子吸引性基により過剰電子をトラップして正孔輸送材料へ電子が入ることを抑制し、正孔輸送材料の劣化を防ぐことによって長寿命化できると推定される。
R1~R10は、それぞれ、水素原子、ハロゲン原子、置換もしくは無置換の炭素数1~20のアルキル基、置換もしくは無置換の炭素数3~30のアルキルシリル基、置換もしくは無置換の環形成炭素数8~30のアリールシリル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換の環形成炭素数6~20のアラルキル基、置換もしくは無置換の環形成炭素数6~10のアリール基、又は電子吸引性基を示す。
R1~R5の少なくとも1つが電子吸引性基で、かつ、R6~R10の少なくとも1つが電子吸引性基である。Ar2及びAr4は電子吸引性基を有しても有さなくてもよい。
また、「置換もしくは無置換の・・・」における置換基としては、後述するようなアルキル基、アルキルシリル基、ハロゲン化アルキル基、アリール基、シクロアルキル基、アルコキシ基、複素環基、アラルキル基、アリールオキシ基、アリールチオ基、アルコキシカルボニル基、ハロゲン原子、ヒドロキシル基、ニトロ基、シアノ基、カルボキシ基、ジベンゾフラニル基、フルオレニル基等が挙げられる。
本明細書の化合物の水素原子には、軽水素、重水素が含まれる。
以下に、式(1)及び(2)の各基および、置換基の具体例を挙げる。
上記アルキル基の炭素数は、1~10が好ましく、1~8がより好ましく、1~6がさらに好ましい。中でもメチル基、エチル基、プロピル基、イソプロピル基、n-ブチル基、s-ブチル基、イソブチル基、t-ブチル基、n-ペンチル基、n-ヘキシル基が好ましい。
上記アリール基の環形成炭素数は、6~20が好ましく、6~14がより好ましく、6~10がさらに好ましい。好ましくは、フェニル基、ナフチル基である。
上記シクロアルキル基の環形成炭素数は、3~10が好ましく、3~8がより好ましく、3~6がさらに好ましい。
具体的な芳香族アミン誘導体の例を以下に示す。
R111は、置換もしくは無置換の環形成炭素数6~30のアリール基、置換もしくは無置換の環形成原子数5~30の複素環基、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の環形成炭素数3~10のシクロアルキル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換のシリル基、シアノ基、又はフッ素原子である。
bは0~7の整数である。bが2以上の整数の場合、複数あるR111は、同一でも異なっていてもよい。
Ar14は置換もしくは無置換の環形成炭素数6~30のアリール基、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の環形成炭素数3~10のシクロアルキル基、又は置換もしくは無置換の環形成原子数5~30の複素環基である。)
尚、Ar14としては、9,9-ジメチルフルオレン-1-イル基、9,9-ジメチルフルオレン-2-イル基、9,9-ジメチルフルオレン-3-イル基、9,9-ジメチルフルオレン-4-イル基、ジベンゾフラン-1-イル基、ジベンゾフラン-2-イル基、ジベンゾフラン-3-イル基、又はジベンゾフラン-4-イル基も好ましい。
Ar12,Ar13は、それぞれ、水素原子、置換もしくは無置換の環形成炭素数6~30のアリール基又は置換もしくは無置換の環形成原子数5~30の複素環基を示し、Ar12はそれが結合しているナフタレン環と共に環を形成していてもよい。)
例えば、Ar12はそれが結合しているナフタレン環と共に環を形成し、該環が置換もしくは無置換の環形成原子10~30の縮合複素環基である。
例えば、Ar13は、水素原子である。
Ar15は置換もしくは無置換の環形成炭素数6~30のアリール基、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の環形成炭素数3~10のシクロアルキル基、又は置換もしくは無置換の環形成原子数5~30の複素環基である。)
Ar15は、例えば、ジベンゾフラン-1-イル基、ジベンゾフラン-2-イル基、ジベンゾフラン-3-イル基、又はジベンゾフラン-4-イル基が好ましい。
Ar16は、置換もしくは無置換の環形成炭素数6~30のアリール基、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の環形成炭素数3~10のシクロアルキル基、又は置換もしくは無置換の環形成原子数5~50の複素環基である。また、Ar16はそれが結合しているベンゼン環と共に環を形成していてもよい。
Ar17は置換もしくは無置換の環形成炭素数6~30のアリール基、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の環形成炭素数3~10のシクロアルキル基、又は置換もしくは無置換の環形成原子数5~30の複素環基である。)
例えば、Ar16はそれが結合しているベンゼン環と共に環を形成し、該環が置換もしくは無置換の環形成原子10~30の縮合複素環基である。
例えば、Ar16はそれが結合しているベンゼン環と共に環を形成し、該環が置換もしくは無置換の2-ナフチル基である。
Ar5a及びAr6aはそれぞれ独立に、置換もしくは無置換の環形成炭素数10~20の縮合芳香族環基である。
Ar18は置換もしくは無置換の環形成炭素数6~30のアリール基、又は置換もしくは無置換の環形成原子数5~30の複素環基である。
Lは、単結合、置換もしくは無置換の環形成炭素数6~30のアリーレン基又は2価の置換もしくは無置換の環形成原子数5~30の複素環基である。
R121は、置換もしくは無置換の環形成炭素数6~30のアリール基、置換もしくは無置換の環形成原子数5~30の複素環基、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の環形成炭素数3~10のシクロアルキル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換のシリル基、シアノ基、又はフッ素原子である。
nは0~11の整数である。nが2以上の整数の場合、複数あるR121は、同一でも異なっていてもよい。)
例えば、Lは単結合である。
Lは、単結合、置換もしくは無置換の環形成炭素数6~50のアリーレン基又は2価の置換もしくは無置換の環形成原子数5~50の複素環基である。
Ar19は置換もしくは無置換の環形成炭素数6~30のアリール基、又は置換もしくは無置換の環形成原子数5~30の複素環基である。
X11は酸素原子、硫黄原子、-NR-又は-CRaRbであり、R、Ra、Rbは、それぞれR101~R108と同様な基を示す。
R121は、置換もしくは無置換の環形成炭素数6~30のアリール基、置換もしくは無置換の環形成原子数5~30の複素環基、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の環形成炭素数3~10のシクロアルキル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換のシリル基、シアノ基、又はフッ素原子である。
mは0~7の整数である。mが2以上の整数の場合、複数あるR121は、同一でも異なっていてもよい。)
Ar20は、置換もしくは無置換の環形成炭素数6~30のアリール基又は置換もしくは無置換の環形成原子数5~30の複素環基を示す。
R201は、置換もしくは無置換の環形成炭素数6~30のアリール基、置換もしくは無置換の環形成原子数5~30の複素環基、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の環形成炭素数3~10のシクロアルキル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換のシリル基、シアノ基、又はフッ素原子である。
pは0~4の整数である。pが2以上の整数の場合、複数あるR201は、同一でも異なっていてもよい。)
Ar20、R201は、式(17)と同じである。
R301は、置換もしくは無置換の環形成炭素数6~30のアリール基、置換もしくは無置換の環形成原子数5~30の複素環基、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の環形成炭素数3~10のシクロアルキル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換のシリル基、シアノ基、又はフッ素原子である。
pは0~4の整数である。pが2以上の整数の場合、複数あるR201は、同一でも異なっていてもよい。qは0~11の整数である。qが2以上の整数の場合、複数あるR301は、同一でも異なっていてもよく、隣接する置換基同士で飽和または不飽和の環を形成してもよい。)
前記環形成炭素数6~30のアリール基は、アルキル基、シクロアルキル基、アリール基、複素環基等の置換基により置換されていてもよく、これら置換してもよい置換基は、上述した置換基と同様の基が挙げられる。なお置換してもよい置換基は、アリール基、複素環基が好ましい。
また、Ar201の環形成炭素数16~30の縮合芳香族環基としては、トリフェニレニル基、ピレニル基、クリセニル基、ベンゾ[c]フェナントリル基、ベンゾ[g]クリセニル基等が挙げられ、特に、ベンゾ[c]フェナントリル基、ベンゾ[g]クリセニル基が好ましい。
また、Ar201の環形成原子数10~30の縮合複素環基としては、キノリル基、ジベンゾフラニル基等が挙げられ、特に、ジベンゾフラニル基が好ましい。
前記環形成原子数5~30の複素環基は、アルキル基、シクロアルキル基、アリール基、複素環基等の置換基により置換されていてもよく、これら置換してもよい置換基は、上述した置換基と同様の基が挙げられる。なお置換してもよい置換基は、アリール基、複素環基が好ましい。
好ましくは、メチル基、エチル基、プロピル基、イソプロピル基、n-ブチル基、s-ブチル基、イソブチル基、t-ブチル基である。前記炭素数1~10のアルキル基は、アルキル基、シクロアルキル基、アリール基、複素環基等の置換基により置換されていてもよく、これら置換してもよい置換基は、上述した置換基と同様の基が挙げられる。なお置換してもよい置換基は、アリール基、複素環基が好ましい。
しては、上述したアリール基及び複素環基の2価の基が挙げられる。
また、正孔注入材料にTCNQ誘導体等の電子受容物質を添加することによりキャリアを増感させることもできる。
芳香族三級アミン誘導体としては、例えば、N,N’-ジフェニル-N,N’-ジナフチル-1,1’-ビフェニル-4,4’-ジアミン、N,N,N’,N’-テトラビフェニル-1,1’-ビフェニル-4,4’-ジアミン等、又はこれらの芳香族三級アミン骨格を有したオリゴマー若しくはポリマーであるが、これらに限定されるものではない。
前記金属錯体化合物としては、例えば、8-ヒドロキシキノリナートリチウム、ビス(8-ヒドロキシキノリナート)亜鉛、トリス(8-ヒドロキシキノリナート)アルミニウム、トリス(8-ヒドロキシキノリナート)ガリウム、ビス(10-ヒドロキシベンゾ[h]キノリナート)ベリリウム、ビス(10-ヒドロキシベンゾ[h]キノリナート)亜鉛等が挙げられるが、これらに限定されるものではない。
好ましい形態として、これらの電子注入材料にさらにドーパントを含有し、陰極からの電子の受け取りを容易にするため、より好ましくは第2有機層の陰極界面近傍にアルカリ金属で代表されるドーパントをドープする。
ドーパントとしては、ドナー性金属、ドナー性金属化合物及びドナー性金属錯体が挙げられ、これら還元性ドーパントは1種単独で使用してもよいし、2種以上を組み合わせて使用してもよい。
25mm×75mm×1.1mm厚のITO透明電極(陽極)付きガラス基板(ジオマティック社製)をイソプロピルアルコール中で超音波洗浄を5分間行なった後、UVオゾン洗浄を30分間行なった。洗浄後の透明電極ライン付きガラス基板を真空蒸着装置の基板ホルダーに装着し、まず透明電極ラインが形成されている側の面上に前記透明電極を覆うようにして膜厚50nmの化合物A-1を成膜した。A-1膜の成膜に続けて、このA-1膜上に膜厚45nmのA-2を成膜した。
さらに、このA-2膜上に膜厚20nmで化合物EM13と化合物DM-1を20:1の膜厚比で成膜し青色系発光層とした。
この膜上に電子輸送層として膜厚30nmで下記構造のET-1を蒸着により成膜した。この後、LiFを膜厚1nmで成膜した。このLiF膜上に金属Alを150nm蒸着させ金属陰極を形成し有機EL発光素子を作製した。
また、寿命は、初期輝度500cd/m2における半減寿命で評価した。結果を表1,2に示す。
NE: 電子数
π: 円周率 = 3.1416
λ: 波長 (nm)
φ: 発光強度 (W/sr ・m2 ・nm)
h: プランク定数 = 6.63 x 10-34 (J ・s)
c: 光速度 = 3 x 108 (m/s)
J: 電流密度 (mA/cm2)
e: 電荷 = 1.6 x 10-19 (C)
この明細書に記載の文献の内容を全てここに援用する。
Claims (17)
- 下記式(1)で表される芳香族アミン誘導体と下記式(I)で表されるアントラセン誘導体とを含有する有機発光媒体。
[式(1)中、Ar1~Ar4は、それぞれ、置換もしくは無置換の環形成炭素数6~30のアリール基を示し、Ar1~Ar4のうち少なくとも1つは電子吸引性基を有するアリール基である。
式(I)中、R101~R108はそれぞれ水素原子、フッ素原子、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の炭素数3~10のシクロアルキル基、置換もしくは無置換の炭素数3~30のアルキルシリル基、置換もしくは無置換の環形成炭素数8~30のアリールシリル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換の環形成炭素数6~20のアリールオキシ基、置換もしくは無置換の環形成炭素数6~30のアリール基、又は置換もしくは無置換の環形成原子数5~30の複素環基を示し、
Ar101~Ar104は、置換もしくは無置換の環形成炭素数6~30のアリール基、又は置換もしくは無置換の環形成原子数5~30の複素環基である。
Xは0~3の整数であり、
Yは1~3の整数である。] - 下記式(1)で表される芳香族アミン誘導体と下記式(II)で表されるアントラセン誘導体とを含有する有機発光媒体。
[式(1)中、Ar1~Ar4は、それぞれ、置換もしくは無置換の環形成炭素数6~30のアリール基を示し、Ar1~Ar4のうち少なくとも1つは電子吸引性基を有するアリール基である。
式(II)中、R101~R108はそれぞれ水素原子、フッ素原子、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の炭素数3~10のシクロアルキル基、置換もしくは無置換の炭素数3~30のアルキルシリル基、置換もしくは無置換の環形成炭素数8~30のアリールシリル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換の環形成炭素数6~20のアリールオキシ基、置換もしくは無置換の環形成炭素数6~30のアリール基、又は置換もしくは無置換の環形成原子数5~30の複素環基を示し、
Ar105は、置換もしくは無置換の環形成炭素数6~30のアリール基、又は置換もしくは無置換の環形成原子数5~30の複素環基である。
Ar201は、置換もしくは無置換の環形成炭素数16~30縮合芳香族環基、又は置換もしくは無置換の環形成原子10~30の縮合複素環基である。] - 下記式(1)で表される芳香族アミン誘導体と下記式(III)で表されるアントラセン誘導体とを含有する有機発光媒体。
[式(1)中、Ar1~Ar4は、それぞれ、置換もしくは無置換の環形成炭素数6~30のアリール基を示し、Ar1~Ar4のうち少なくとも1つは電子吸引性基を有するアリール基である。
式(III)中、R101~R108はそれぞれ水素原子、フッ素原子、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の炭素数3~10のシクロアルキル基、置換もしくは無置換の炭素数3~30のアルキルシリル基、置換もしくは無置換の環形成炭素数8~30のアリールシリル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換の環形成炭素数6~20のアリールオキシ基、置換もしくは無置換の環形成炭素数6~30のアリール基、又は置換もしくは無置換の環形成原子数5~30の複素環基を示し、
Ar106は、置換もしくは無置換の環形成炭素数6~30のアリール基、又は置換もしくは無置換の環形成原子数5~30の複素環基である。
Ar301は、置換もしくは無置換の2-ナフチル基、置換もしくは無置換のフルオレニル基である。但し、Ar106とAr301は異なる。] - 下記式(1)で表される芳香族アミン誘導体と下記式(10)で表されるアントラセン誘導体とを含有する有機発光媒体。
[式(1)中、Ar1~Ar4は、それぞれ、置換もしくは無置換の環形成炭素数6~30のアリール基を示し、Ar1~Ar4のうち少なくとも1つは電子吸引性基を有するアリール基である。
式(10)中、R101~R108はそれぞれ水素原子、フッ素原子、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の炭素数3~10のシクロアルキル基、置換もしくは無置換の炭素数3~30のアルキルシリル基、置換もしくは無置換の環形成炭素数8~30のアリールシリル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換の環形成炭素数6~20のアリールオキシ基、置換もしくは無置換の環形成炭素数6~30のアリール基、又は置換もしくは無置換の環形成原子数5~30の複素環基を示し、
Ar11は、置換もしくは無置換のフェニル基、置換もしくは無置換の2-ナフチル基、又は置換もしくは無置換の環形成原子数5~30の複素環基を示す。
R111は、置換もしくは無置換の環形成炭素数6~30のアリール基、置換もしくは無置換の環形成原子数5~30の複素環基、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の環形成炭素数3~10のシクロアルキル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換のシリル基、シアノ基、又はフッ素原子である。
bは0~7の整数である。bが2以上の整数の場合、複数あるR111は、同一でも異なっていてもよい。] - 下記式(1)で表される芳香族アミン誘導体と下記式(12)で表されるアントラセン誘導体とを含有する有機発光媒体。
(式(1)中、Ar1~Ar4は、それぞれ、置換もしくは無置換の環形成炭素数6~30のアリール基を示し、Ar1~Ar4のうち少なくとも1つは電子吸引性基を有するアリール基である。
式(12)中、R101~R108はそれぞれ水素原子、フッ素原子、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の炭素数3~10のシクロアルキル基、置換もしくは無置換の炭素数3~30のアルキルシリル基、置換もしくは無置換の環形成炭素数8~30のアリールシリル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換の環形成炭素数6~20のアリールオキシ基、置換もしくは無置換の環形成炭素数6~30のアリール基、又は置換もしくは無置換の環形成原子数5~30の複素環基を示し、
Ar12,Ar13は、それぞれ、水素原子、環形成炭素数6~30のアリール又は置換もしくは無置換の環形成原子数5~30の複素環を示し、Ar12はそれが結合しているナフタレン環と共に環を形成していてもよい。) - 下記式(1)で表される芳香族アミン誘導体と下記式(13)で表されるアントラセン誘導体とを含有する有機発光媒体。
(式(1)中、Ar1~Ar4は、それぞれ、置換もしくは無置換の環形成炭素数6~30のアリール基を示し、Ar1~Ar4のうち少なくとも1つは電子吸引性基を有するアリール基である。
式(13)中、R101~R108、R111はそれぞれ水素原子、フッ素原子、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の炭素数3~10のシクロアルキル基、置換もしくは無置換の炭素数3~30のアルキルシリル基、置換もしくは無置換の環形成炭素数8~30のアリールシリル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換の環形成炭素数6~20のアリールオキシ基、置換もしくは無置換の環形成炭素数6~30のアリール基、又は置換もしくは無置換の環形成原子数5~30の複素環基を示し、
Ar15は置換もしくは無置換の環形成炭素数6~30のアリール基、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の環形成炭素数3~10のシクロアルキル基、又は置換もしくは無置換の環形成原子数5~30の複素環基である。
bは0~7の整数である。bが2以上の整数の場合、複数あるR111は、同一でも異なっていてもよい。) - 下記式(1)で表される芳香族アミン誘導体と下記式(14)で表されるアントラセン誘導体とを含有する有機発光媒体。
(式(1)中、Ar1~Ar4は、それぞれ、置換もしくは無置換の環形成炭素数6~30のアリール基を示し、Ar1~Ar4のうち少なくとも1つは電子吸引性基を有するアリール基である。
式(14)中、R101~R108はそれぞれ水素原子、フッ素原子、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の炭素数3~10のシクロアルキル基、置換もしくは無置換の炭素数3~30のアルキルシリル基、置換もしくは無置換の環形成炭素数8~30のアリールシリル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換の環形成炭素数6~20のアリールオキシ基、置換もしくは無置換の環形成炭素数6~30のアリール基、又は置換もしくは無置換の環形成原子数5~30の複素環基を示し、
Ar16は、置換もしくは無置換の環形成炭素数6~30のアリール基、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の環形成炭素数3~10のシクロアルキル基、又は置換もしくは無置換の環形成原子数5~50の複素環基である。また、Ar16はそれが結合しているベンゼン環と共に環を形成していてもよい。
Ar17は置換もしくは無置換の環形成炭素数6~30のアリール基、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の環形成炭素数3~10のシクロアルキル基、又は置換もしくは無置換の環形成原子数5~30の複素環基である。) - 下記式(1)で表される芳香族アミン誘導体と下記式(15)で表されるアントラセン誘導体とを含有する有機発光媒体。
(式(1)中、Ar1~Ar4は、それぞれ、置換もしくは無置換の環形成炭素数6~30のアリール基を示し、Ar1~Ar4のうち少なくとも1つは電子吸引性基を有するアリール基である。
式(15)中、R101~R108は、それぞれ水素原子、フッ素原子、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の炭素数3~10のシクロアルキル基、置換もしくは無置換の炭素数3~30のアルキルシリル基、置換もしくは無置換の環形成炭素数8~30のアリールシリル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換の環形成炭素数6~20のアリールオキシ基、置換もしくは無置換の環形成炭素数6~30のアリール基、又は置換もしくは無置換の環形成原子数5~30の複素環基を示し、
Ar18は置換もしくは無置換の環形成炭素数6~30のアリール基、又は置換もしくは無置換の環形成原子数5~30の複素環基である。
Lは、単結合、置換もしくは無置換の環形成炭素数6~30のアリーレン基又は2価の置換もしくは無置換の環形成原子数5~30の複素環基である。
R121は、置換もしくは無置換の環形成炭素数6~30のアリール基、置換もしくは無置換の環形成原子数5~30の複素環基、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の環形成炭素数3~10のシクロアルキル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換のシリル基、シアノ基、又はフッ素原子である。
nは0~11の整数である。nが2以上の整数の場合、複数あるR121は、同一でも異なっていてもよい。) - 下記式(1)で表される芳香族アミン誘導体と下記式(16)で表されるアントラセン誘導体とを含有する有機発光媒体。
(式(1)中、Ar1~Ar4は、それぞれ、置換もしくは無置換の環形成炭素数6~30のアリール基を示し、Ar1~Ar4のうち少なくとも1つは電子吸引性基を有するアリール基である。
式(16)中、R101~R108は、それぞれ水素原子、フッ素原子、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の炭素数3~10のシクロアルキル基、置換もしくは無置換の炭素数3~30のアルキルシリル基、置換もしくは無置換の環形成炭素数8~30のアリールシリル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換の環形成炭素数6~20のアリールオキシ基、置換もしくは無置換の環形成炭素数6~30のアリール基、又は置換もしくは無置換の環形成原子数5~30の複素環基を示し、
Lは、単結合、置換もしくは無置換の環形成炭素数6~50のアリーレン基又は2価の置換もしくは無置換の環形成原子数5~50の複素環基である。
Ar19は置換もしくは無置換の環形成炭素数6~30のアリール基、又は置換もしくは無置換の環形成原子数5~30の複素環基である。
X11は酸素原子、硫黄原子、-NR-又は-CRaRbであり、R、Ra、Rbは、それぞれR101~R108と同様な基を示す。
R121は、置換もしくは無置換の環形成炭素数6~30のアリール基、置換もしくは無置換の環形成原子数5~30の複素環基、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の環形成炭素数3~10のシクロアルキル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換のシリル基、シアノ基、又はフッ素原子である。
mは0~7の整数である。mが2以上の整数の場合、複数あるR121は、同一でも異なっていてもよい。) - 下記式(1)で表される芳香族アミン誘導体と下記式(17)で表されるアントラセン誘導体とを含有する有機発光媒体。
(式(1)中、Ar1~Ar4は、それぞれ、置換もしくは無置換の環形成炭素数6~30のアリール基を示し、Ar1~Ar4のうち少なくとも1つは電子吸引性基を有するアリール基である。
式(17)中、R101~R108は、それぞれ水素原子、フッ素原子、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の炭素数3~10のシクロアルキル基、置換もしくは無置換の炭素数3~30のアルキルシリル基、置換もしくは無置換の環形成炭素数8~30のアリールシリル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換の環形成炭素数6~20のアリールオキシ基、置換もしくは無置換の環形成炭素数6~30のアリール基、又は置換もしくは無置換の環形成原子数5~30の複素環基を示し、
Ar20は、置換もしくは無置換の環形成炭素数6~30のアリール基又は置換もしくは無置換の環形成原子数5~30の複素環基を示す。
R201は、置換もしくは無置換の環形成炭素数6~30のアリール基、置換もしくは無置換の環形成原子数5~30の複素環基、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の環形成炭素数3~10のシクロアルキル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換のシリル基、シアノ基、又はフッ素原子である。
pは0~4の整数である。pが2以上の整数の場合、複数あるR201は、同一でも異なっていてもよい。) - 下記式(1)で表される芳香族アミン誘導体と下記式(18)で表されるアントラセン誘導体とを含有する有機発光媒体。
(式(1)中、Ar1~Ar4は、それぞれ、置換もしくは無置換の環形成炭素数6~30のアリール基を示し、Ar1~Ar4のうち少なくとも1つは電子吸引性基を有するアリール基である。
式(18)中、R101~R108は、それぞれ水素原子、フッ素原子、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の炭素数3~10のシクロアルキル基、置換もしくは無置換の炭素数3~30のアルキルシリル基、置換もしくは無置換の環形成炭素数8~30のアリールシリル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換の環形成炭素数6~20のアリールオキシ基、置換もしくは無置換の環形成炭素数6~30のアリール基、又は置換もしくは無置換の環形成原子数5~30の複素環基を示し、
Ar20は、置換もしくは無置換の環形成炭素数6~30のアリール基又は置換もしくは無置換の環形成原子数5~30の複素環基を示す。
R201、R301は、置換もしくは無置換の環形成炭素数6~30のアリール基、置換もしくは無置換の環形成原子数5~30の複素環基、置換もしくは無置換の炭素数1~10のアルキル基、置換もしくは無置換の環形成炭素数3~10のシクロアルキル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換のシリル基、シアノ基、又はフッ素原子である。
pは0~4の整数である。pが2以上の整数の場合、複数あるR201は、同一でも異なっていてもよい。qは0~11の整数である。qが2以上の整数の場合、複数あるR301は、同1でも異なっていてもよく、隣接する置換基同士で飽和または不飽和の環を形成してもよい。) - 前記芳香族アミン誘導体が、下記式(2)で表される請求項1~12のいずれかに記載の有機発光媒体。
(式中、Ar2及びAr4は、前記式(1)と同じである。
R1~R10は、それぞれ、水素原子、ハロゲン原子、置換もしくは無置換の炭素数1~20のアルキル基、置換もしくは無置換の炭素数3~30のアルキルシリル基、置換もしくは無置換の環形成炭素数8~30のアリールシリル基、置換もしくは無置換の炭素数1~20のアルコキシ基、置換もしくは無置換の環形成炭素数6~20のアラルキル基、置換もしくは無置換の環形成炭素数6~10のアリール基又は電子吸引性基を示す。
R1~R5の少なくとも1つが電子吸引性基で、かつ、R6~R10の少なくとも1つが電子吸引性基である。) - 前記R1~R5のいずれか1つが電子吸引性基であり、他が水素原子であり、
前記R6~R10のいずれか1つが電子吸引性基であり、他が水素原子である請求項13記載の有機発光媒体。 - 電子吸引性基がシアノ基である請求項1~14のいずれかに記載の有機発光媒体。
- 請求項1~15のいずれかに記載の有機発光媒体からなる有機薄膜。
- 陰極と陽極の間に少なくとも発光層を含む1以上の有機薄膜層が挟持されている有機エレクトロルミネッセンス素子において、該有機薄膜層の少なくとも1層が、請求項16に記載の有機薄膜である有機エレクトロルミネッセンス素子。
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| US (1) | US20120056165A1 (ja) |
| EP (1) | EP2500397A4 (ja) |
| JP (2) | JP5198657B2 (ja) |
| KR (2) | KR20130067312A (ja) |
| CN (1) | CN102232106A (ja) |
| TW (1) | TW201129674A (ja) |
| WO (1) | WO2011074253A1 (ja) |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP2500397A1 (en) | 2012-09-19 |
| KR20110094271A (ko) | 2011-08-23 |
| JPWO2011074253A1 (ja) | 2013-04-25 |
| US20120056165A1 (en) | 2012-03-08 |
| TW201129674A (en) | 2011-09-01 |
| KR20130067312A (ko) | 2013-06-21 |
| CN102232106A (zh) | 2011-11-02 |
| JP5198657B2 (ja) | 2013-05-15 |
| EP2500397A4 (en) | 2012-10-10 |
| JP2013145886A (ja) | 2013-07-25 |
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