Polythiophene Films Containing Anthraquinone Groups

Abstract

The monomer, 3-(3-thienyl)prop-1-yl-9,10-anthraquinone-2-carboxylate (5) was prepared by reacting 9,10-anthraquinone-2-carbonyl chloride with 3-(3-thienyl) propanol. Electrochemical polymerisation of (5) at a platinum electrode was achieved in acetonitrile. Electrochemical behaviour of (5) and the resulting greenish blue polymer, poly(5), have been examined by cyclic voltammetry in acetonitrile containing TPAB. These films were quite stable to repetitive scanning between 0 and –1.35 V. The neutral, hydrophobic poly(5) films show some resistance to swelling in acetonitrile and are not stable at potentials more negative than –1.55 V.