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EP0388768A2
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EP
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Organic electroluminescent device containing aromatic dimethylidyne compounds
Assignee: Idemitsu Kosan Co Ltd
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Filing: 1990-03-14
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Granted: —
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Expires: 2010-03-14
Abstract
Abstract An electroluminescence device comprising, as a light emitting material, a compound represented by the general formula: wherein each symbol is an defined in the specification, is disclosed. Aromatic dimethylidyne compounds represented by the general formula: wherein each symbol is an defined in the specification, a process for efficiently preparing the above compounds, and electroluminescence devices (EL devices) using the above compounds as a light emitting material, are also disclosed. The aromatic dimethylidyne compounds are novel compounds, and EL devices using these compounds provide EL light emission of high luminance in a region of bluish purple to green.
Inventors
- 👤 Hiroshi C/O Idemitsu Kosan Co. Ltd. Tokailin
- 👤 Hisahiro C/O Idemitsu Kosan Co. Ltd. Higashi
- 👤 Chishio C/O Idemitsu Kosan Co. Ltd. Hosokawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 10:07
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/12; H05B33/14; C; C07; C07C; C07C13/00; C07C13/28; C07C15/00; C07C15/40; C07C15/50; C07C15/52; C07C15/56; C07C15/58; C07C15/60; C07C43/00; C07C43/02; C07C43/20; C07C43/215; C09; C09K; C09K11/00; C09K11/06; H10; H10K; H10K85/00; H10K85/60; H10K85/615; H10K85/631; H10K85/649; H10K85/654; C07C2601/00; C07C2601/12; C07C2601/14; H10K2102/00; H10K2102/10; H10K2102/101; H10K2102/103; H10K50/00; H10K50/10; H10K50/11; H10K85/621; H10K85/656; H10K85/6565; Y; Y10; Y10S; Y10S428/00; Y10S428/917
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
89 words
An electroluminescence device comprising, as a light emitting material, a compound represented by the general formula: wherein R¹ and R² are each an alkyl group, a substituted or unsubstituted cyclohexyl group, an alkoxy group, a cyano group, or a substituted or unsubstituted aryl group, R³ and R⁴ are each a substituted or unsubstituted heterocyclic group, or an aryl group, Ar is a substituted or unsubstituted arylene group, and R¹ and R³, and R² and R⁴ may combine together to form a substituted or unsubstituted, saturated or unsaturated ring structure.
Claim 2
Dependent Claim
89 words
An electroluminescence device comprising, as a light emitting material, a compound represented by the general formula: wherein R¹ and R² are each an alkyl group, a substituted or unsubstituted cyclohexyl group, an alkoxy group, a cyano group, or a substituted or unsubstituted aryl group, R³ and R⁴ are each a substituted or unsubstituted heterocyclic group, or an aryl group, Ar is a substituted or unsubstituted arylene group, and R¹ and R³, and R² and R⁴ may combine together to form a substituted or unsubstituted, saturated or unsaturated ring structure.
Claim 3
Dependent Claim
98 words
An aromatic dimethylidyne compound represented by the general formula: (wherein X and Y may be the same or different and are each an alkyl group having 1 to 4 carbon atoms, a phenyl group, a substituted phenyl group, a cyclohexyl group, a substituted cyclohexyl group, a naphthyl group, a substituted naphthyl group, a pyridyl group or a substituted phyridyl group (wherein the substituent is an alkyl group having 1 to 4 carobn atoms, an alkoxy group having 1 to 4 carbon atoms, or a phenyl group, and may be substituted by a plurality of groups), and Ar′ is
Claim 4
Dependent Claim
98 words
An aromatic dimethylidyne compound represented by the general formula: (wherein X and Y may be the same or different and are each an alkyl group having 1 to 4 carbon atoms, a phenyl group, a substituted phenyl group, a cyclohexyl group, a substituted cyclohexyl group, a naphthyl group, a substituted naphthyl group, a pyridyl group or a substituted phyridyl group (wherein the substituent is an alkyl group having 1 to 4 carobn atoms, an alkoxy group having 1 to 4 carbon atoms, or a phenyl group, and may be substituted by a plurality of groups), and Ar′ is
Claim 5
Dependent Claim
40 words
The aromatic dimethylidyne compound as claimed in Claim 2 wherein X and Y are each a methyl group, a phenyl group, a naphthyl group, a pyridyl group, a cyclohexyl group, a tolyl group, a methoxyphenyl group, or a biphenyl group.
Claim 6
Dependent Claim
91 words
A process for preparing an aromatic dimethylidyne compound represented by the general formula: (wherein X¹, Y² and Ar′ are the same as defined above) which comprises condensing an arylene group-containing phosphorus compound represented by the general formula: (RO)₂ -H₂C-Ar′-CH₂ P(OR)₂ (wherein R is an alkyl group having 1 to 4 carbon atoms, and Ar′ is the same as defined above) and a ketone compound represented by the general formula: (wherein X¹ and Y¹ are the same as X and Y, respectively, excluding an alkyl group having 1 to 4 carbon atoms).
Claim 7
Dependent Claim
91 words
A process for preparing an aromatic dimethylidyne compound represented by the general formula: (wherein X¹, Y² and Ar′ are the same as defined above) which comprises condensing an arylene group-containing phosphorus compound represented by the general formula: (RO)₂ -H₂C-Ar′-CH₂ P(OR)₂ (wherein R is an alkyl group having 1 to 4 carbon atoms, and Ar′ is the same as defined above) and a ketone compound represented by the general formula: (wherein X¹ and Y¹ are the same as X and Y, respectively, excluding an alkyl group having 1 to 4 carbon atoms).
Claim 8
Dependent Claim
51 words
A process for preparing an aromatic dimethylidyne compound as described in Claim 2 which comprises condensing a phosphorus compound represented by the general formula: (wherein X, Y and R are the same as defined above) and dialdehyde represented by the general formula: HOC-Ar′-CHO (wherein Ar′ is the same as defined above).
Claim 9
Dependent Claim
16 words
An electroluminescence device comprising an aromatic dimethylidyne compound of Claim 2 as a light emitting material.
Claim 10
Dependent Claim
22 words
The electroluminescence device as claimed in Claim 1 which possesses a light emitting layer containing an aromatic dimethylidyne compound of Claim 2.
Claim 11
Dependent Claim
22 words
The electroluminescence device as claimed in Claim 1 or 6 wherein the light emitting layer is placed between a pair of electrodes.
Claim 12
Dependent Claim
31 words
The electroluminescence device as claimed in Claim 1 or 6 wherein a positive electrode, a hole injection layer, a light emitting layer, and a negative electrode are laminated in this order.
Claim 13
Dependent Claim
35 words
The electroluminescence device as claimed in Claim 1 or 6 wherein a positive electrode, a hole injection layer, a light emitting layer, an electron injection layer, and a negative electrode are laminated in this order.
References Cited (Backward Citations)
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