Metastable reaction mixtures for the in situ polymerization of conducting polymers

Abstract From the Canadian patent

Conducting polythiophene films are produced by the oxidation of bithiophene or terthiophene monomers using , phosphomolybdic acid wherein the reagents are first combined to form a metastable solution, the solution is then cast as a film and , polymerisation ultimately initiated by evaporation of the solvent The equivalent formation of polypyrrole via the oxidation of pyrrole using phosphomolybdic acid has been previously demonstrated but this approach , cannot be applied directly to thiophene which , has too high an oxidation potential Bithiophene and terthiophene have lower oxidation potentials, close to that of pyrrole This work suggests the previously demonstrated method is …