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Molecules 2010, 15(9), 6205-6216; doi:10.3390/molecules15096205

Synthesis of New 2-(2´-Hydroxyaryl)benzotriazoles and Evaluation of Their Photochemical Behavior as Potential UV-Filters

1, 2, 3, 1, 4, 4, 4, 2,*  and 1,*
1 Research Group for Alkaloid Chemistry, Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Hungarian Academy of Sciences. Gellért tér 4, 1111 Budapest, Hungary 2 Instituto de Tecnología Química UPV-CSIC, Universidad Politécnica de Valencia, Avda de Los Naranjos s/n, 46022 Valencia, Spain 3 ESTEVE. Avda. Mare de Déu de Montserrat, 221, 08041 Barcelona, Spain 4 ISDIN. Provençals 33, 08019 Barcelona, Spain
* Authors to whom correspondence should be addressed.
Received: 29 June 2010 / Revised: 23 August 2010 / Accepted: 1 September 2010 / Published: 3 September 2010
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Two new 2-(2´-hydroxyaryl)benzotriazole derivatives were synthesized and studied by photophysical and photochemical techniques in order to assess their ability to act as UV-filters. The absorption and emission properties of both compounds were determined in solvents of different polarity. In non polar solvent, a photoinduced excited state intramolecular proton transfer was established leading to efficient non radiative dissipation of UV-energy. In addition, the compounds considered were photostable under irradiation with simulated sunlight.
Keywords: benzotriazoles; benzenediol; UV-filters; UV-stabilizers benzotriazoles; benzenediol; UV-filters; UV-stabilizers
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Farkas, R.; Lhiaubet-Vallet, V.; Corbera, J.; Törincsi, M.; Gorchs, O.; Trullas, C.; Jiménez, O.; Miranda, M.A.; Novak, L. Synthesis of New 2-(2´-Hydroxyaryl)benzotriazoles and Evaluation of Their Photochemical Behavior as Potential UV-Filters. Molecules 2010, 15, 6205-6216.

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