Metallopolymer Photochemistry. Photophysical, Photochemical, and Photoelectrochemical Properties of (bpy)2RuII< Sites Bound to Poly(4-vinylpyridine)

Article abstract of DOI:10.1021/ja00388a024

The photochemical and photophysical properties of the polymer-bound chromophore Ru(bpy)2(PVP)2²⁺ (PVP is poly(4-vinylpyridine)) have been investigated in homogeneous solution.Results have been obtained with polymers both dilute and concentrated in chromophore.Lifetime and quantum yield data are interpreted in terms of models of excited-state behavior previously proposed for analogous mopnomeric poly(pyridyl) complexes of Ru(II).Excited-state sites within the metallopolymers undergo oxidative and reductive electron-transfer quenching.The quenching reaction were investigated by Stern-Volmer quenching and conventional microsecond flash photolysis.Sensitization of n-TiO2 to visible light has been observed on a semiconductor coated with a film of the metallopolymer.