Polydiphenyldiacetylenes

摘要

Disclosed herein are polydiphenyldiacetylenes having the following repeating unit (III): <IMAGE> (III) (wherein R1 denotes a hydrogen atom or a methoxy group; R2 denotes a hydrogen atom, a methoxy group or a methylamino group; R3 denotes a hydrogen atom or a trifluoromethyl group; and R4 denotes a hydrogen atom or a trifluoromethyl group; provided that R1 is not a hydrogen atom when R2 is hydrogen atom, and R3 is not a hydrogen atom when R4 is hydrogen atom).