Novel conjugated system of polymeric semiconducting polythiophene derivatives with alkylthiophene side chain: High solubility and oxidation stability

Abstract

We report the synthesis of polythiophene derivatives that contain thienyl side chains, using synthetic strategies that achieve high organic semiconductor field effect mobilities by enhancing the π-conjugation in the side chain conjugated system. With increased charge densities, we obtained high field effect mobilities, up to 0.050 cm2/Vs and 0.003 cm2/Vs from poly(3,3‴-didecylated-thiophenyl sexithiophene) (PDTST) and poly(3,3‴-didecylated-thiophenyl quaterthiophene) (PDTQT), respectively.