ELECTRODE-KINETICS OF THIN POLYMER COMPLEX FILMS COMPOSED OF POLY(ALKYLENEVIOLOGEN) AND POLY (PARA-STYRENESULFONIC ACID)

The kinetic parameters (standard rate constant ko, transfer coefficient α and apparent diffusion coefficient Dapp) characterizing the heterogeneous electron-transfer process at electrode-film interfaces and the homogeneous charge-transport process within films for the one-electron reduction of the dication of viologen sites to the corresponding radical monocation at poly(alkyleneviologen) (PAV)/poly(p-styrenesulfonic acid) (PSS) polymer complex film-coated electrodes, where the viologen units of PAVs are joined by a varying number (m: 3, 5, 6 or 8) of the spacer methylene groups, have been estimated by normal pulse voltammetry. It was found that Dapp, ko and α largely depend on m. © 1990.