POLYRADICALS - SYNTHETIC STRATEGIES AND CHARACTERIZATION

Synthetic routes to polyradicals are briefly reviewed; in addition the synthesis and electrochemical characterization of a novel anthraquino ne derivatized thiophene monomer, 1-[4-(3-thienyl)butyl]2-anthraquinon e carboxylate (I) is discussed. This monomer may be electropolymerized onto Pt in CH2Cl2 by successively more anodic potential sweeps from 0 .0V, finally reaching a steady growth at a limit of +2.OV vs Ag+/0. Th e voltammogram of the resulting conducting polymer displays a polymer waves at Ep(a) + 1.0 and Ep(c) + 0.84V, and quinone waves at E0' = -0. 80 and -1.24V vs Ag.+/0 The polymer is active towards O2 reduction in pH7 buffered aqueous solution.