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Polymer-coated microelectrodes and twin electrode thin layer cells applied to electron transfer cross-reaction and permeability rates

Authors
Journal
Journal of Electroanalytical Chemistry
0022-0728
Publisher
Elsevier
Publication Date
Volume
172
Identifiers
DOI: 10.1016/0022-0728(84)80180-1

Abstract

Abstract Electropolymerized films prepared from the monomers [Ru(4-methyl-4′-vinyl-2,2′-bipyridine) 3] 2+ and [Os(bpy) 2(4-vinylpyridine) 2] 2+ are coated on 10-μm diameter Pt microdisk electrodes and on one (Pt) face of a twin electrode thin layer cell. These new forms of polymer-coated electrodes are applied to measurements of polymer/solution interfacial electron transfer mediation kinetics and of rates of permeation of ferrocene and ferricenium through the polymer films. The electron transfer rates agree with independently determined rates from polymer-coated rotated disk electrodes. The permeation rate of ferrocene through the poly-cationic films is about three times larger than that for ferricenium ion.

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