POLYMER AND DEVICE

摘要

A polymer having a backbone of alternating N atoms and aromatic or heteroaromatic groups including a repeating structure of formula (I) wherein: R3 independently in each occurrence is a substituent; m is 0 or a positive integer; Ar 1 and Ar 2 are an aryl or heteroaryl group and at least one group selected from Ar 1 and Ar 2 has formula (II) wherein: each x is independently 0 or a positive integer; each y is independently 0 or a positive integer, and R 1 and R 2 independently in each occurrence is a substituent.