1. A Co(<scp>ii</scp>)–Ru(<scp>ii</scp>) dyad relevant to light-driven water oxidation catalysis
- Author
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Andrea Sartorel, Alejandro Montellano López, Claudio Chiorboli, Marcella Bonchio, Erica Pizzolato, Franco Scandola, and Mirco Natali
- Subjects
Photosensitizing Agents ,Light ,Hydrogen ,Chemistry ,Water ,General Physics and Astronomy ,chemistry.chemical_element ,Cobalt ,Electrochemistry ,Photochemistry ,Oxygen ,Catalysis ,Ruthenium ,Artificial photosynthesis ,Photocatalysis ,water oxidation catalysis ,Catalytic oxidation ,Water splitting ,Physical and Theoretical Chemistry ,Oxidation-Reduction - Abstract
Artificial photosynthesis aims at efficient water splitting into hydrogen and oxygen, by exploiting solar light. As a priority requirement, this process entails the integration of suitable multi-electron catalysts with light absorbing units, where charge separation is generated in order to drive the catalytic routines. The final goal could be the transposition of such an asset into a photoelectrocatalytic cell, where the two half-reactions, proton reduction to hydrogen and water oxidation to oxygen, take place at two appropriately engineered photoelectrodes. We herein report a covalent approach to anchor a Co(II) water oxidation catalyst to a Ru(II) polypyridine photosensitizer unit; photophysical characterisation and the catalytic activity of such a dyad in a light activated cycle are reported, and implications for the development of regenerative systems are discussed.
- Published
- 2014
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