Mechanism of the photochemical transformation of naphthalene in water
Upon irradiation in air-saturated aqueous solution, naphthalene is mainly converted into 7-hydroxy-1, 4-naphoquinone, 2-formylcinnamaldehyde and 2-carboxycinnamaldehyde. The quantum yield of photolysis is equal to 0.0025+/-0.0005. Napthalene is likely to be phototransformed via monophotonic ionization that occurs with a quantum yield equal to 0.02. The radical actions formed after the electron injection can deprotonate or react with water yielding radicals that are oxidized by molecular oxygen. Finally, 2-formylcinnamaldehyde and 2-carboxycinnamaldehyde are yielded. The production of 7-hydroxy-1, 4-nahthoquinone is consistent with the intermediary formation of photolabile 1, 4-naphtoquinone.
Bibliographic Reference: Article: Journal of Photochemistry and Photobiology A: Chemistry 123 (1999), 15-19
Record Number: 199911226 / Last updated on: 1999-08-27
Original language: en
Available languages: en