MODELING POTENTIOMETRIC SENSITIVITY OF CONDUCTING POLYMERS

The influence of different polymerization conditions and electrochemic al processes provoked by soaking on the potentiometric sensitivity of conducting polymer films is discussed. Poly(pyrrole) doped with hexacy anoferrate(II) is selected as a model polymer. It is shown that, depen ding on the conditions applied during film deposition and soaking, eit her anionic or cationic potentiometric responses can be observed and r elated to the composition of the film. The potentiometric sensitivity of the conducting polymer films is analyzed and interpreted by means o f generalized theoretical schema.