ELECTROCATALYSTS FOR THE 4-ELECTRON REDUCTION OF DIOXYGEN BASED ON ADSORBED COBALT TETRAPYRIDYLPORPHYRIN MOLECULES LINKED BY AQUAAMINE COMPLEXES OF RUTHENIUM(II)
Cn. Shi et Fc. Anson, ELECTROCATALYSTS FOR THE 4-ELECTRON REDUCTION OF DIOXYGEN BASED ON ADSORBED COBALT TETRAPYRIDYLPORPHYRIN MOLECULES LINKED BY AQUAAMINE COMPLEXES OF RUTHENIUM(II), Inorganica Chimica Acta, 225(1-2), 1994, pp. 215-227
Prolonged exposure of graphite electrodes coated with cobalt tetrapyri
dylporphyrin to solutions of fac-Ru(NH3)(5)(OH2)(3)(2+) results in the
formation of stable, apparently polymeric complexes on the surface in
which the porphyrins are linked by bridging Ru centers. Electrochemic
al evidence in support of this assertion is presented. The coatings ob
tained endow the coated electrodes with the ability of catalyze the fo
ur-electron reduction of O-2 at unusually positive potentials.