Patent US3340897A successfully refreshed from Google Patents.
Patent EP0399508A1 successfully refreshed from Google Patents.
EP0399508A1
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Organic electroluminescent device
Assignee: Mitsubishi Chemical Corp
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Filing: 1990-05-23
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Granted: —
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Expires: 2010-05-23
Abstract
Abstract An organic electroluminescent device having an organic hole injection transport layer and an organic luminescent layer formed between two conductive layers constituting electrodes, wherein the organic hole injection transfer layer contains a hydrazone compound of the following formula (I): wherein A is a monovalent or bivalent organic group containing at least one aromatic hydrocarbon ring or aromatic hetero ring which may have a substituent, each of R¹, R², R³, R⁴ and R⁵ is a hydrogen atom, or an alkyl, aralkyl, aromatic hydrocarbon or heterocyclic group which may have a substituent, each of R⁶ and R⁷ is an alkyl, aralkyl, aryl, aromatic hydrocarbon or heterocyclic group which may have a substituent, ℓ is an integer of 0 or 1, m is an integer of 0, 1 or 2, and n is an integer of 1 or 2, provided that A, R¹ and the carbon atom to which R¹ is bonded, or R⁶, R⁷ and the nitrogen atom to which R⁶ and R⁷ are bonded, may bond to one another to form a ring.
Inventors
- 👤 Yoshiharu Sato
- 👤 Masayuki Yajima
- 👤 Tetsuo Murayama
- 👤 Hitoshi Ono
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 09:43
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/12; H05B33/14; Y; Y10; Y10S; Y10S428/00; Y10S428/917
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
172 words
An organic electroluminescent device having an organic hole injection transport layer and an organic luminescent layer formed between two conductive layers constituting electrodes, wherein the organic hole injection transfer layer contains a hydrazone compound of the following formula (I): wherein A is a monovalent or bivalent organic group containing at least one aromatic hydrocarbon ring or aromatic hetero ring which may have a substituent, each of R¹, R², R³, R⁴ and R⁵ is a hydrogen atom, or an alkyl, aralkyl, aromatic hydrocarbon or heterocyclic group which may have a substituent, each of R⁶ and R⁷ is an alkyl, aralkyl, aryl, aromatic hydrocarbon or heterocyclic group which may have a substituent, ℓ is an integer of 0 or 1, m is an integer of 0, 1 or 2, and n is an integer of 1 or 2, provided that A, R¹ and the carbon atom to which R¹ is bonded, or R⁶, R⁷ and the nitrogen atom to which R⁶ and R⁷ are bonded, may bond to one another to form a ring.
Claim 2
Dependent Claim
172 words
An organic electroluminescent device having an organic hole injection transport layer and an organic luminescent layer formed between two conductive layers constituting electrodes, wherein the organic hole injection transfer layer contains a hydrazone compound of the following formula (I): wherein A is a monovalent or bivalent organic group containing at least one aromatic hydrocarbon ring or aromatic hetero ring which may have a substituent, each of R¹, R², R³, R⁴ and R⁵ is a hydrogen atom, or an alkyl, aralkyl, aromatic hydrocarbon or heterocyclic group which may have a substituent, each of R⁶ and R⁷ is an alkyl, aralkyl, aryl, aromatic hydrocarbon or heterocyclic group which may have a substituent, ℓ is an integer of 0 or 1, m is an integer of 0, 1 or 2, and n is an integer of 1 or 2, provided that A, R¹ and the carbon atom to which R¹ is bonded, or R⁶, R⁷ and the nitrogen atom to which R⁶ and R⁷ are bonded, may bond to one another to form a ring.
Claim 3
Dependent Claim
73 words
The electroluminescent device according to Claim 1, wherein A in the formula (I) is a monovalent or bivalent organic group derived from benzene, naphthalene, anthracene, pyrene, perillene, phenanthrene, fluororanthene, acenaphthene, acenaphthylene, azulene, fluorene, indene, tetracene, naphthacene, pyrrole, thiophene, furan, indole, carbazole, pyrazole, pyridine, acridine, phenazine, benzothiophene, benzofuran, xanthene, thioxanthene, indoline, phenothiazine, biphenyl, terphenyl, phenylanthracene, bithiophene, terthiophene, bifuran, thienylbenzene, thienylnaphthalene, pyrrolylthiophene, N-phenylcarbazole, diphenylmethane, stilbene, tolan, 1,4-diphenylbutadiene, diphenyl ether, diphenyl sulfide, N-methyldiphenylamine, triphenylamine or azobenzene.
Claim 4
Dependent Claim
56 words
The electroluminescent device according to Claim 1, wherein the substituent for the aromatic hydrocarbon ring or aromatic hetero ring, is selected from the group consisting of a lower alkyl group, a lower alkoxy group, an allyl group, an aralkyl group, an aryloxy group, an arylalkoxy group, an aryl group, an arylvinyl group and a dialkylamino group.
Claim 5
Dependent Claim
30 words
The electroluminescent device according to Claim 3, wherein the alkyl moiety in the substituent is substituted by an ether group, an ester group, a cyano group or a sulfide group.
Claim 6
Dependent Claim
67 words
The light emitting element according to Claim 1, wherein each of R¹, R², R³, R⁴ or R⁵ is a hydrogen atom or a lower alkyl, benzyl, phenethyl, phenyl, naphthyl, acenaphthyl, anthracenyl, pyrenyl, thienyl, bithienyl, carbazolyl, indolyl, furyl or indolinyl group, which may be substituted by a lower alkyl group, a lower alkoxy group, an aryloxy group, an arylalkoxy group, an aryl group or a substituted amino group.
Claim 7
Dependent Claim
72 words
The electroluminescent device according to Claim 5, wherein the substituent is selected from the group consisting of a methyl group, an ethyl group, a propyl group, a butyl group, a hexyl group, a methoxy group, an ethoxy group, a butoxy group, a phenoxy group, a tolyloxy group, a benzyloxy group, a phenethyloxy group, a phenyl group, a naphthyl group, a dimethylamino group, a diethylamino group, a phenylmethylamino group and a diphenylamino group.
Claim 8
Dependent Claim
31 words
The electorluminescent device according to Claim 1, wherein the A, R¹ and the carbon atom to which R¹ is bonded, bond to one another to form a ring of the formula:
Claim 9
Dependent Claim
57 words
The light emitting element according to Claim 1, wherein each of R⁶ and R⁷ is a lower alkyl, benzyl, phenethyl, naphthylmethyl, allyl, phenyl, naphthyl, pyridyl, thienyl, furyl or pyrrolyl group, which may be substituted by a lower alkyl group, a lower alkoxy group, an aryloxy group, an arylalkoxy group, an aryl group or a substituted amino group.
Claim 10
Dependent Claim
72 words
The electroluminescent device according to Claim 8, wherein the substituent is selected from the group consisting of a methyl group, an ethyl group, a propyl group, a butyl group, a hexyl group, a methoxy group, an ethoxy group, a butoxy group, a phenoxy group, a tolyloxy group, a benzyloxy group, a phenethyloxy group, a phenyl group, a naphthyl group, a dimethylamino group, a diethylamino group, a phenylmethylamino group and a diphenylamino group.
Claim 11
Dependent Claim
32 words
The electroluminescent device according to Claim 1, wherein R⁶, R⁷ and the nitrogen atom to which R⁶ and R⁷ are bonded, bond to one another to form a ring of the formula:
References Cited (Backward Citations)
DE3148961A1
Cited
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