Photochemistry and Photophysics of Shinorine Dimethyl Ester.

Autor: Orallo DE; Departamento de Química, Facultad de Ciencias Exactas y Naturales, Instituto de Investigaciones Físicas de Mar del Plata (CONICET-UNMDP), Universidad Nacional de Mar del Plata, Mar del Plata, Argentina., Fangio MF; Departamento de Química, Facultad de Ciencias Exactas y Naturales, Instituto de Investigaciones Físicas de Mar del Plata (CONICET-UNMDP), Universidad Nacional de Mar del Plata, Mar del Plata, Argentina., Poblet M; Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Mar del Plata, Argentina., Carignan MO; Instituto Nacional de Investigación y Desarrollo Pesquero, Mar del Plata, Argentina., Bernal L; Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Mar del Plata, Argentina., Carreto JI; Instituto Nacional de Investigación y Desarrollo Pesquero, Mar del Plata, Argentina., Bertolotti SG; Departamento de Química, Universidad Nacional de Río Cuarto, CONICET, Río Cuarto, Argentina., Churio MS; Departamento de Química, Facultad de Ciencias Exactas y Naturales, Instituto de Investigaciones Físicas de Mar del Plata (CONICET-UNMDP), Universidad Nacional de Mar del Plata, Mar del Plata, Argentina.
Jazyk: angličtina
Zdroj: Photochemistry and photobiology [Photochem Photobiol] 2018 Sep; Vol. 94 (5), pp. 829-833. Date of Electronic Publication: 2018 Mar 02.
DOI: 10.1111/php.12884
Abstrakt: 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.
(© 2018 The American Society of Photobiology.)
Databáze: MEDLINE