INQUINOA   21218
INSTITUTO DE QUIMICA DEL NOROESTE
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Novel Trinuclear Ruthenium Complex For Light Driven Water Oxidation
Autor/es:
MAURICIO CATTANEO; FRANC MEYER
Lugar:
Uppsala
Reunión:
Congreso; PCET2014 ? 2nd International Conferenceon Proton-Coupled Electron Transfer; 2014
Resumen:
Novel Trinuclear Ruthenium Complex For Light Driven Water Oxidation   Mauricio Cattaneo, Franc Meyer    Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Tammannstraße 4 37077 Göttingen, Germany  cattaneomauricio@gmail.com       Studies on catalytic water oxidation with mono- and dinuclear ruthenium complexes have captured much attention in last years.1 Recent advances in the group with a new pyrazolate-based ligand ({[Ru(py)2(OH2)]2(m-Mebbp)}3+) showed to improve catalyst performance.2 As the main source of oxidative power in those experiments comes from cerium (IV) that has to be added as sacrificial oxidant to generate oxygen evolution, new sources of oxidative power are needed and light power is the most desirable one.   With the aim of generating an intramolecular electron transfer from the dinuclear ruthenium water oxidation catalyst to some light driven electron acceptor we synthesized a new trinuclear complex were the dinuclear catalytic moeity for water oxidation is coupled to a [Ru(bpy)3]2+ antenna via a multi-step ligand synthesis.   The trinuclear complex was synthetized as PF6- salt and it was fully characterized by spectroscopic, analytical and electrochemical techniques. Spectroscopy and electrochemistry resembles the parent compound {[Ru(py)2(OH2)]2(m-Mebbp)}3+ with the extra part of the third ruthenium center. Water oxidation catalysis will be discussed. Further photophysical studies are under way.