HIGHLY CONDUCTIVE FREESTANDING FILMS BY ELECTROCHEMICAL POLYMERIZATION OF 3,4-DIMETHOXYPYRROLE

The electrosynthesis of high quality large area self-supporting films of poly(3,4-dimethoxypyrrole) tosylate by galvanostatic oxidation of t he monomer in propylene carbonate-tributylammonium tosylate on stainle ss steel anodes is described. The material is characterised by complet e elemental analysis, ESR and controlled potential spectroelectrochemi stry. In dry acetonitrile, poly(3,4-dimethoxypyrrole) sustains hundred s of charging-discharging cycles without significant deterioration. Th e conductivity of doped films is equal to or greater than 200 S cm(-1) with bipolarons as the main charge carriers. An unusual feature of th e polymer are ESR spectroscopic g-values below 2.0.