Abstract
Unsupported transparent nanoporous-nanocrystalline TiO2 membranes are prepared which are 20 µm thick anatase structures and have an associated surface roughness of ca. 1100. Visible-light induced charge injection by the adsorbed ruthenium complex, [bis(4,4′-dicarboxy-2,2′-bipyridine)(4,4′-dimethyl-2,2++′-bipyridine)ruthenium(ii)] dichloride 1, has been demonstrated for these membranes. Also demonstrated has been blue-light induced reduction of the adsorbed viologen, 1-ethyl-1′-[4-carboxy-3-hydroxyphenyl)methyl]-4,4′-bipyridini++um perchlorate 2.
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