FORMATION OF SURFACE-MODIFIED POLYPYRROLE FILMS BY ELECTROPOLYMERIZATION ON NONCONDUCTING SOLID-SURFACES

Deposition of polypyrrole tosylate, synthesized potentiostatically wit h values of 0.5-0.8 V (relative to a standard calomel electrode) from an aqueous solution, on a solid non-conducting surface in a specially designed thin-layer cell led to the observation of two-dimensional gro wth of the film directly adjacent to the surface, reverting to three-d imensional dendritic growth as the film thickness increases. The signi ficance of the two forms of morphology is discussed.