Tuning of photo‐ and electroluminescence in alkylated polythiophenes with well‐defined regioregularity

Abstract

Color tuning of luminescence via molecular engineering of the active polymer is important for the commercial application of π‐conjugated polymers in photonic devices. The synthesis of a series of regiospecific alkylated polythiophenes is described, in which the effective conjugation length could be varied by altering the length of the coplanar blocks between head‐to‐head dyads. It is demonstrated that the color‐tuned materials obtained by this novel approach are potentially suitable for applicationin displays and other devices.