Electron transfer in a covalent dye–cobalt catalyst assembly – a transient absorption spectroelectrochemistry perspective

Abstract

Various oxidation states of the catalytically active cobalt center in a covalent dyad were electrochemically prepared and the light-induced excited-state processes were studied. Virtually identical deactivation processes are observed, irrespective of the oxidation state of the cobalt center, varying from Co^III to Co^I, indicating the absence of oxidative quenching within the dye–catalyst assembly.