Resistometry, UV-Vis and Raman Spectroscopy have been employed as in-situ methods for the determination of the overoxidation potential of polypyrrole (PPy). These methods all show that the onset of overoxidation begins at potential on the pH of the supporting electrolyte, with an increase in stability at Lower pH's.
Keywords
polypyrrole and derivatives; Raman spectroscopy; UV-Vis absorption