Bis(aminostyryl)benzene compounds and synthetic intermediates thereof, and process for preparing the compounds and intermediates
申请人:Sony Corporation
公开号:US06337167B1
公开(公告)日:2002-01-08
To provide compounds, which are suitable for use as an organic luminescent material capable of developing intense luminescence which is yellow to red, and a process for preparing in general and high efficiency. A bis(aminostyryl)benzene compound of the following general formula [I] is provided
wherein R2 and R3 independently represent an unsubstituted aryl group, and R1 and R4 independently represent an aryl group, and R5 to R8, independently represent a cyano group or the like. A process for the preparation thereof is described wherein a 4-(N,N-diarylamino)benzaldehyde and a diphosphonic acid ester or diphosphonium are subjected to condensation reaction. Intermediates of the bis(aminostyryl)benzene compound are also described.
Bis (aminostyryl) benzene compunds and synthetic intermediates thereof, and process for preparing the compounds and intermediates
申请人:——
公开号:US20030069437A1
公开(公告)日:2003-04-10
A bis(aminostyryl)benzene compound of the following general formula [I] is provided
1
wherein R
2
and R
3
independently represent an unsubstituted aryl group, and R
1
and R
4
independently represent an aryl group, and R
5
to R
8
independently represent a cyano group or the like. A process for the preparation thereof is described wherein a 4-(N,N-diarylamino)benzaldehyde and a diphosphonic acid ester or diphosphonium salt are, for example, subjected to condensation reaction. Intermediates of the bis(aminostyryl)benzene compound are also described.
A photoreceptor for positive charging is disclosed, said photoreceptor comprising a carrier generating material which is stable against both heat and light, has high carrier generating efficiency and provides good photoconductivity over a wide wavelength range and a specific carrier transport material combined in such a manner that the shape of surface potential curves remains essentially constant over a cyclic operation and contributes to the formation of a visible image of high quality in each cycle by reducing the "memory effect", minimizing the residual potential and extending the cycle life.
TRIPHENYLAMINE DERIVATIVES, AND CHARGE TRANSPORT MATERIAL AND ELECTROPHOTOGRAPHIC PHOTORECEPTOR PREPARED THEREFROM
申请人:Takasago International Corporation
公开号:EP0812820A1
公开(公告)日:1997-12-17
A triphenylamine derivative, represented by the following general formula (1):
wherein R1, R2, R3, R4, R5 and R6 each represents a hydrogen atom, a lower alkyl group, an alkoxy group, a halogen atom or an aryl group which may have a substituent group; and m and n each represents 0 or 1.