104972-92-1Relevant academic research and scientific papers
Homogenous Catalysis of the Photoreduction of Water. 6. Mediation by Polypyridine Complexes of Rhuthenium(II) and Cobalt(II) in Alkaline Media
Krishnan, C. V.,Brunschwig, Bruce S.,Creutz, Carol,Sutin, Norman
, p. 2005 - 2015 (1985)
The emission of (polypyridine)rhutenium(II) complexes (S) is quenched by (polypyridine)cobalt(II) (CoL32+) complexes via parallel oxidative, reductive, and energy-transfer paths, giving CoL3 +S+, CoL33+ + S-, respectively.The oxidative route provides the basis for a new water photoreduction sequence: in mixed acetonitrile-water solvents relatively high cage-escape yields of Ru(4,7-(CH3)2phen)33+ and Co(bpy)3+(S = Ru(4,7-(CH3)2phen)32+, phen = 1,10-phenanthroline, bpy = 2,2'-bipyridine) are obtained.The Ru(III) complex is reduced by triethanolamine (TEOA), and the Co(bpy)3+ reacts with water and/or TEOAH+ to give H2. the maximum H2 quantum yield obtained is 0.29 in 50percent acetonitrile-water.Unusual features of the system are the fact that, at low TEOA, Co(bpy)32+ scavenging of Ru(III) reduces the H2 yield and that the cage-escape and limiting H2 yields are strongly solvent dependent: for the Ru(4,7-(CH3)2phen)32+-Co(bpy)32+-TEOA system the H2 yield increases from cca.0.02 in H2O to 0.29 in the mixed solvent.Reduction potentials for CoL33+/2+ and CoL32+/+ couples are also reported.
Long Range Photoinduced Electron Transfer in a Rigid Polymer
Guarr, Tom,McGuire, Mark E.,McLendon, George
, p. 5104 - 5111 (1985)
Electron (hole) tunnelling reactions are studied in a rigid polymer medium by following the reductive quenching of a series of Ru(LL)3(2+)* homologues by a series of aromatic amines.Tunnelling distances up to 12 Angstroem (edge to edge) are observed.The e
