The ion selective adsorption of polystyrenesulfonate onto a polyaniline surface

Adsorption phenomena of polystyrenesulfonate onto polyaniline were investigated be ESCA. The polymer electrolyte was selectively adsorbed on the polyaniline surface. The dopant at the outermost surface of the polyaniline was completely exchanged by the polystyrenesulfonate depending on the oxidation state of the conducting polymer. The adsorbed polystyrenesulfonate was hardly exchanged by the perchlorate anion and has a strong interaction to the nitrogen atom of the polyaniline.