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

Sebastian Bold (1, 2, 3) , Zedler Linda (2) , Ying Zhang (1, 2) , Julien Massin (3) , Vincent Artero (3) , Murielle Chavarot-Kerlidou (3) , Benjamin Dietzek (1, 2, 4)

1 Institute of Physical Chemistry and Abbe Center of Photonics
2 Department Functional Interfaces, Leibniz Institute of Photonic Technology
3 LCBM - UMR 5249 - Laboratoire de Chimie et Biologie des Métaux
4 Institute for Physical Chemistry and Center for Energy and Environmental Chemistry

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 CoIII to CoI, indicating the absence of oxidative quenching within the dye-catalyst assembly.

Domaines: Chimie; Catalyse

Sebastian Bold, Zedler Linda, Ying Zhang, Julien Massin, Vincent Artero, et al.. Electron transfer in a covalent dye-cobalt catalyst assembly - a transient absorption spectroelectrochemistry perspective.. Chemical Communications, 2018, 54 (75), pp.10594-10597. ⟨10.1039/c8cc05556d⟩. ⟨hal-01870377⟩