Morphology of polypyyrole films grown in thin-layer cells

Summary form only given. Application of atomic force microscopy and scanning electron microscopy in examining the non-conducting substrate, poly(methyl methacrylate) and polypyrrole free standing film formed on it, respectively, in a thin-layer cell, has led to an understanding of how such films may be formed. In thin-layer cells films grow first by aggregation on the non conducting surface, becoming doped only when a continuous contact is made with the, metallic anode. A proposed mechanism is presented for the origin of the wrinkle morphology, observed in thin-layer cells and notice is drawn to the similarity to films formed on indium-tin oxide glass.