The protective role of Cu(II) ions in the photo degradation of uracil in aqueous solutions: A steady state and laser flash photolysis study

Autor:	Samita Basu, K. Chabita, Sudhindra N. Bhattacharyya, Parikshit C. Mandal
Rok vydání:	1998
Předmět:	Radiation Aqueous solution Uracil Laser Photochemistry law.invention Ion chemistry.chemical_compound chemistry law Flash photolysis sense organs Irradiation Triplet state Photodegradation
Zdroj:	Radiation Physics and Chemistry. 51:93-100
ISSN:	0969-806X
DOI:	10.1016/s0969-806x(97)00091-1
Popis:	High intensity laser excitation and γ-radiolysis produce some similar intermediates and hence some similar end products. Evidence for photo ionisation through triplet state of uracil in aqueous solutions was obtained by ns laser flash photolysis. The effects of Cu 2+ ions on the photo reactions of uracil were studied by irradiating it in different solvent environment by continuous irradiation with 266 nm laser beam. The transient species involved in such photo reactions namely triplets of uracil were monitored by laser flash photolysis and evidence of electron abstraction by the Cu 2+ ions from the triplet states of uracil was observed. Possible mechanism for the formation of photoproducts in the presence and in the absence of Cu 2+ ions on 266 nm UV irradiation has been suggested.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d172e5ea7e365e1d15fd57c087f49737 https://doi.org/10.1016/s0969-806x(97)00091-1 Zobrazit plný text záznamu Full Text from ScienceDirect