Abstract By using Heck polycondensation, we have synthesized carbazole-based alt- copolymers tethered with polyhedral oligomeric silsesquioxanes (POSS), which had well- defined architectures, similar polymerization degrees and the different contents of POSS. The effect of POSS content and the length of the side chain containing POSS on the electroluminescence properties of these polymers were investigated. POSS particles in ...