A 1,1,4,4-tetraphenyl-1,3-butadiene derivatives represented by formula (I): ##STR1## wherein R.sub.1 represents a di-lower alkylamino group, and R.sub.2 represents a hydrogen atom or a di-lower alkylamino group, is disclosed, which has useful characteristics such as excellent static charge retention ability. An electrophotographic light-sensitive material using the foregoing derivative can satisfy the requirements, e.g., for high sensitivity, low residual potential, less light fatigue even after repeated use, and excellent durability.
本文揭示了由公式(I)表示的A 1,1,4,4-四苯基-
1,3-丁二烯衍
生物:##STR1## 其中R.sub.1代表二级低烷基
氨基团,R.sub.2代表氢原子或二级低烷基
氨基团,该衍
生物具有优异的静电保留能力等有用特性。使用上述衍
生物的电子照相光敏材料能够满足高灵敏度、低剩余电位、即使经过重复使用也不易疲劳的要求以及优异的耐久性。