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Photochemistry and Photophysics of Shinorine Dimethyl Ester
Author(s) -
Orallo Dalila E.,
Fangio María Florencia,
Poblet Martin,
Carignan Mario O.,
Bernal Luis,
Carreto José I.,
Bertolotti Sonia G.,
Churio María Sandra
Publication year - 2018
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/php.12884
Subject(s) - chemistry , cationic polymerization , quantum yield , photochemistry , fluorescence , aqueous solution , micelle , micellar solutions , molecule , sodium dodecyl sulfate , organic chemistry , physics , quantum mechanics
The photostability and photophysical properties of the dimethyl ester of the mycosporine‐like amino acid shinorine have been experimentally evaluated in aqueous solution and in the presence of direct micelles prepared with a cationic or an anionic detergent, respectively. In comparison with shinorine, the ester molecule increases the photostability, the fluorescence quantum yield and the fluorescence lifetime in water as well as in the micellar solutions. The effects are more pronounced in sodium dodecyl sulfate solutions and suggest that the electrostatic attractions with the micellar interface contribute to limit the movement of the molecules and influence the relative rate of their deactivation channels. However, the predominance of the nonradiative decay is maintained together with the UV photoprotective ability of this atypical mycosporine species.