M. Umana

Chemically modified electrodes: Part XIV. Attachment of reagents to oxide-free glassy carbon surfaces. Electroactive RF polymer films on carbon and platinum electrodes

Abstract : Reactive, deoxygenated glassy carbon surfaces prepared by mechanical abrasion under nitrogen or argon plasma etching react with selected molecules to yield surfaces with immobilized molecular surface states. Vinyl ferrocene and a ruthenium pyridine complex are immobilized on glassy carbon in this way. Introduction of vinyl ferrocene directly into an RF plasma discharge leads to electroactive ferrocene polymer deposition on glassy carbon and Pt surfaces. Surface waves corresponding to 3 x ten to the minus 8th power moles/sq cm ferrocene are obtained in this way. (Author)

X-Ray Photoelectron Spectroscopy of Metal, Metal Oxide, and Carbon Electrode Surfaces Chemically Modified with Ferrocene and Ferricenium.

Abstract Monomolecular and multilayers of ferrocene derivatives have been deposited on or bonded to electrodes and examined by XPS. In many cases the preparation leaves the modified surface in an oxidized, ferricenium state. Evidence supporting this and possible oxidative mechanisms is discussed.

Properties of RuO x Working Electrodes in Nonaqueous Solvents

Reactions intrinsic to electrodes in water are quenched in aprotic media and is a well‐behaved working electrode for electrochemistry of solutions of metal bipyridyls, methyl viologen, ferrocene, tetrathiafulvalene, and nitroaromatics. Follow‐up reactions of nitroaromatic radicals are especially sensitive to water at surfaces. Electrochemical properties are correlated to XPES‐determined surface composition.