Abstract
Photophysical properties (fluorescence spectra, lifetimes, triplet–triplet absorption spectra, triplet lifetimes and quantum yields) and redox potentials have been measured for the free-base, Zn2+ derivatives of a cationic water-soluble porphyrin, tetrakis(trimethyl-aminophenyl)porphyrin [TAPP(4+)]; the values are similar to those of tetrakis(sulphonatophenyl)porphyrin, TPPS(4 –). The zinc porphyrin ZnTAPP undergoes facile photoredox reactions and also sensitizes H2 evolution upon visible-light photolysis in ‘sacrificial’ systems, albeit with a lower efficiency in comparison with tetrakis(4-methylpyridyl)porphyrin, ZnTMPyP.
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Schedule a callMore From: Journal of the Chemical Society, Faraday Transactions 2
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