Substituted fluorene polymers their preparation and uses

摘要

A polymer having a first repeat unit comprising a group having general formula (I) which is substituted or unsubstituted: where at least one of R1 or R2 comprises at least two substituted or unsubstituted aryl or heteroaryl groups and excluding the group having general formula (I) where one or both of R1 and R2 comprises a triarylamine group.