Chiral modified electrodes. Part 1. Preparation and characterization of a polymeric [Ru(4-methyl-4 '-vinylbipyridine)(3)](2+) electrode

By means of reductive electropolymerization of [Ru-(4-methyl-4'-vinylbipyri dine)(3)](PF6)(2), thin polymer films of about 5 to 100 monolayers are prod uced on different substrate electrodes. Chiral coatings are obtained when o ptically resolved [Ru(vbpy)(3)](PF6)(2) is used. The polycationic films are resistant to penetration by cations, they have an insulating passive and a conducting state. The polymer electrode assemblies were characterized by c yclic voltammetry and electrochemical impedance spectroscopy. In the conduc ting state Nernst behavior is observed, conductance is high and Butler-Volm er kinetics at the polymer/supporting electrode interface determine the beh avior of the electrode assembly.