Electron transport membrane: Preparation of polypeptide membrane with spacers between the polymer matrix and viologen moiety and their application to an electron transfer reaction

Abstract

AbstractPolypeptide membranes with several lengths of spacers [(CH2)n; n = 3, 6, 12] between the polymer matrix and viologen moiety as a functional group were prepared. Reduction of K3Fe(CN)6 with Na2S2O4 across the obtained membrane in aqueous media were carried out and reduction rate of K3Fe(CN)6 across the membrane of n = 6 was faster than that of n = 3. However, the reduction of the membrane (n = 12) did not proceed chemically and electrochemically at all.