| abstract |
(57) [Abstract] [PROBLEMS] To provide an organic electronic device using a novel charge-transporting copolyester, particularly an electrophotographic photoreceptor having high photosensitivity and excellent repeating stability. [Structure] The following general formulas (Ia) and (I- An organic electronic device containing at least one charge-transporting copolyester containing at least two repeating structural units selected from the structure represented by b). Embedded image (In the formula, R 1 and R 2 are each independently a hydrogen atom, An alkyl group, an alkoxy group, a substituted amino group, a halogen atom, a substituted or unsubstituted aryl group, X represents a substituted or unsubstituted divalent aromatic group, n represents an integer of 1 to 5, and k Represents an integer selected from 0 and 1. ) |