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200 300 400 500 600 700 800 900 1000 potential [mV] vs. Ag/AgCI

Fig. 3. Dependence of roughness a fresh potentiostatically polymerized PPy film from the applied potential.

these chain ends are oxidized. Potentiodynamically produced films are smoother, i.e., the polymer chains are of higher order. The higher order also leads to a polymer film of higher density than a potentiodynamically produced film. The surface structure appears to be more homogeneous and therefore the oxidizing potential has an even effect on the whole polymer film. Because of that, the local SPM investigation of a few square nanometers or micrometers shows no influence at all on the roughness values from an applied potential.

-500 -400 -300 -200 -100 0 100 200 300 400 500 600 potential [mV] vs. Ag/AgCI

Fig. 4. Dependence of roughness of a fresh potentiodynamically polymerized Ppy film from the applied potential.

-500 -400 -300 -200 -100 0 100 200 300 400 500 600 potential [mV] vs. Ag/AgCI

Fig. 4. Dependence of roughness of a fresh potentiodynamically polymerized Ppy film from the applied potential.

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