Synthesis and Properties of Donor-acceptor-type Polymers Comprising Alkoxy-substituted Bithiophene Units

Abstract

Two donor-acceptor-type conjugated polymers comprising alkoxy-substituted bithiophenes were synthesized by both direct C-H arylation polymerization and Stille-type polycondensation. Although these polymers contain the same components, i.e. two alkoxythiophene moieties and one benzothiadiazole moiety in a repeating unit, their optical and electrochemical properties were clearly different owing to their different regioregularities.