Conducting polymers as membranes with variable permeabilities for neutral compounds: Polypyrrole and polyaniline in aqueous electrolytes

Abstract
A combination of mass spectrometry and cyclic voltammetry has proved a powerful tool for the simultaneous study of the structure changes and membrane properties of conducting polymers. The oxidized state of polypyrrole and the emeraldine structure of polyaniline, the two materials used in the study, are shown in the Figure. magnified image