ELECTROCHEMICAL QUARTZ CRYSTAL MICROGRAVIMETRY OF POLY(PYRROLE-CO-[3-(PYRROL-1-YL)PROPANESULFONATE]) FILMS - ELECTROSYNTHESIS, ION-TRANSPORT, AND ION ASSAY

The electrosynthesis, ion transport during redox, and ion binding of the title copolymer in aqueous media were studied by electrochemical quartz crystal microgravimetry in conjunction with cyclic voltammetry, coulometry, and ion-selective electrode measurements. Comparisons of the electrochemical behavior of this copolymer with the parent polymer, namely polypyrrole, are also provided. Using the above combination of techniques, quantitative aspects related to the level of oxidation (i.e. "doping") of the electrosynthesized copolymer, the extent of its permselectivity toward cations (K+) during redox in aqueous chloride electrolytes, and the amount of multiply-charged complex ions [e.g. Ru(NH3)63+] that can be bound onto the polymer matrix along with the corresponding thermodynamic partition coefficients of such species are presented.