Preparation of High Quality Polypyrrole Films

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Abstract
Influences of the polymerization condition on properties of electrochemically synthesized polypyrrole film were studied with the aim of preparing high quality films for device application. Polymerization condition parameters such as the content of dissolved oxygen in the electrolytic solution, the polymerization temperature, the concentrations of monomer and supporting electrolyte, and others were varied, and the conductivity, the surface morphology, and adhesion to substrate of resulting films were examined. High quality films were synthesized as double-layered films consisting of a thin well adherent sublayer and a highly conductive thick overlayer. Optimizing various parameters, we could obtain high quality films with a satisfactorily flat surface, good adhesion to substrate, and a high conductivity (more than 300 S/cm).