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

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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Abstract

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 which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

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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