'Organic metals': polypyrrole, a stable synthetic 'metallic' polymer

Highly stable, flexible films of polypyrrole with p-type conductivities of 100 Ω-1 cm-1 have been prepared by electrolytic oxidation of the appropriate pyrrole monomers; similarly prepared films of mixtures of pyrrole and N-methylpyrrole have conductivities between 5 × 10-3 and 100 Ω-1 cm-1 depending upon the composition.