The Preparation and Characterization of Ester Functionalized Poly(3-Alkylthiophene)S

Abstract

Soluble ester group substituted polythiophenes and copolymers of substituted polythiophenes with 3-octylthiophene were prepared. The decreased conductivities and blue shifts were observed for the substituted polythiophenes. These results indicate the shortening of conjugating length due to the steric repulsion of the ester substituent.