Chemical modification of conducting polypyrrole films

Abstract

Abstract Conducting films of polypyrrole can be modified by introducing substitutents into the cationic pyrrole polymer or by varying the accompanying anion. The electrochemical route for the preparation of these films is particularly convenient for making these modifications since the variations are made in the selection of the monomer or the electrolyte. This eliminates the need for subsequent chemical treatments of the film. As expected, the electrochemical and conducting properties of the film are changed by these chemical modifications.