Abstract
Flash photolysis of the P 3-1-(2-nitrophenyl)ethyl ester of ATP (caged ATP) in the presence of dithiothreitol results in formation of a transient radical species in addition to the known paired-electron aci-nitro anion. The transient radical represents approx. 10% of the reaction flux and is proposed to be the radical anion of the nitroaryl group of caged ATP. The kinetics of its formation suggest that it arises by single electron transfer to the triplet excited state of the nitroarene. The electron donor has not been conclusively identified but tertiary amines present as buffer salts or as impurities are likely candidates.
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Schedule a callMore From: Journal of Photochemistry & Photobiology, A: Chemistry
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