Phenothiazine or phenoxazine derivative, charge-transporting material comprising the same, and electrophotographic photoreceptor

A phenothiazine or phenoxazine derivative represented by the following formula (1):

• ##STR35## wherein Ar.sup.1 and Ar.sup.2 may be the same or different and each represents an aryl group which may have one or more substituents selected from the group consisting of a lower alkyl group, a lower alkoxy group, a halogen atom, a diarylamino group, and a dialkylamino group;
• R.sup.1 and R.sup.2 may be the same or different and each represents a hydrogen atom, a lower alkyl group, or an aryl group which may have one or more substituents selected from the group consisting of a lower alkyl group, a lower alkoxy group, a halogen atom, a diarylamino group, and a dialkylamino group;
• R.sup.3 represents a lower alkyl group, an alicyclic hydrocarbon group having 5 to 7 carbon atoms, an aryl group which may have one or more substituents selected from the group consisting of a lower alkyl group, a lower alkoxy group, a halogen atom, a diarylamino group, and a dialkylamino group, or an aralkyl group which may have one or more substituents selected from the group consisting of a benzyl group, a tolylmethyl group, a methoxybenzyl group, and a chlorobenzyl group;
• X represents a sulfur atom or an oxygen atom;
• and n and m each represents an integer of 0 or 1.