| abstract |
Polymers comprising repeat units of formula (I): wherein R independently at each occurrence is H or a substituent, and two R groups may be joined to form a ring; R independently at each occurrence is a substituent; Ar independently at each occurrence is aryl or heteroaryl, which may be unsubstituted or substituted with one or more substituents; each occurrence of R is independently a substituent; each n is independently 0, 1, 2 or 3, provided that at least one n=1; and each m is independently 0 or 1. The polymer may be light emitting 103 of an organic light emitting device. |