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Conversion Of Light To Electricity By Cis-X2bis(2,2'-bipyridyl-4,4'-dicarboxylate)ruthenium(II) Charge-transfer Sensitizers (X = Cl-, Br-, I-, CN-, And SCN-) On Nanocrystalline Titanium Dioxide Electrodes
Published 1993 · Chemistry
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cis-X 2 Bis(2,2'-bipyridyl-4,4'-dicarboxylate)ruthenium(II) complexes (X=Cl - , Br, I - , CN - , and SCN - ) were prepared and characterized with respct to their absorption, luminescence, and redox behavior. They act as efficient charge-transfer sensitizers for nanocrystalline TiO 2 films (thickness 8-12 μm) of very high internal surface area (roughness factor ca. 1000), prepared by sintering of 15-30-nm colloidal titania particles on a conducting glass support. The performance of cis-di(thiocyanato)bis(2,2'-bipyridyl-4,4'-dicarboxylate)ruthenium(II) (1) was found to be outstanding and is unmatched by any other known sensitizer