There are here provided a novel tetraphenylthiophene derivative represented by the general formula
wherein each of R1 and R2 is an alkyl group, an aralkyl group or an aryl group which may be substituted, and R, 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.
这里提供了一种新型
四苯基噻吩衍
生物,其通式如下
其中R1和R2各自为可被取代的烷基、芳基或芳基,且R和R2可相互连接以与氮原子一起形成环;且ℓ、m和n各自为0或1的整数,并被选择以满足式ℓ≧m≧n的条件;以及电致发光感光体,该感光体由导电基体和其上的感光层组成,感光层含有作为电荷传输材料的上述
四苯基噻吩衍
生物,以及电荷生成材料,最好是特定的偶氮化合物。