Electrocatalytic Reduction of Dioxygen by Diruthenium Cofacial Diporphyrins Axially-Bound to a Gold-Supported, Self-Assembled Monolayer

Abstract

A gold-supported, self-assembled monolayer containing imidazole termini provides axial binding sites for the diruthenium cofacial diporphyrins (μ-N2)Ru2(DPA)(CH3CN) and (μ-N2)Ru2(DPB)(CH3CN). These electrode-bound molecules electrocatalytically reduce dioxygen in a well-characterized environment. The SAM environment makes it easier to study the effect that the eletrode−catalyst interactions are having on the catalysis compared with those of the traditional environment of EPGE.