Tetraphenylthiophene derivative and electrophotographic photoreceptor containing same.

摘要

There are here provided a novel tetraphenylthiophene derivative represented by the general formula <CHEM> wherein each of R1 and R2 is an alkyl group, an aralkyl group or an aryl group which may be substituted, and R1 and R2 may be linked with each other to form a ring together with a nitrogen atom; and each of l , m and n is an integer of 0 or 1 and is selected to meet the condition formula l >/=m>/=n; and an electrophotographic photoreceptor which is composed of an electrically conductive base and a photosensitive layer thereon containing the aforesaid tetraphenylthiophene derivative as a charge-transporting material, and a charge-generating material, preferably a specific azo compound.