申请人:MITA INDUSTRIAL CO. LTD.
公开号:EP0708375A1
公开(公告)日:1996-04-24
According to the present invention, there is provided a novel tryptanthrine derivative represented by the formula:
wherein R1a, R1b, R1c, R1d, R2a, R2b, R2c, and R2d are the same or different and indicate a hydrogen atom, an alkyl group or a halogenated alkyl group; provided that R1a, R1b, R1c and R1d do not indicate a hydrogen atom, simultaneously. Tryptanthrine and a derivative thereof are suitably used for an electrophotosensitive material because of their excellent electron transferring capability.
根据本发明,提供了一种由式表示的新型色黄嘌呤衍生物:
其中R1a、R1b、R1c、R1d、R2a、R2b、R2c和R2d相同或不同,表示氢原子、烷基或卤代烷基;但R1a、R1b、R1c和R1d不同时表示氢原子。由于黄嘌呤及其衍生物具有出色的电子传递能力,因此适合用作电致发光材料。