AFM studies of polypyrrole film surface morphology II. Roughness characterization by the fractal dimension analysis

The fractal dimension of electrogenerated polypyrrole films with chloride, sulfate, perchlorate and dodecylsulfate (DDS) anions as dopants is investigated by using atomic force microscopy under ex situ conditions. The results for films both as-prepared and after potentiodynamic cycling in various supporting electrolytes is presented and discussed.