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Probing the ultrafast energy dissipation mechanism of the sunscreen oxybenzone after UVA irradiation
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Baker, Lewis A., Horbury, Michael D., Greenough, Simon E., Coulter, Philip M., Karsili, Tolga N. V., Roberts, Gareth M., Orr-Ewing, Andrew J., Ashfold, Michael N. R. and Stavros, Vasilios G. (2015) Probing the ultrafast energy dissipation mechanism of the sunscreen oxybenzone after UVA irradiation. Journal of Physical Chemistry Letters, 6 (8). pp. 1363-1368. doi:10.1021/acs.jpclett.5b00417 ISSN 1948-7185.
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Official URL: http://dx.doi.org/10.1021/acs.jpclett.5b00417
Abstract
Oxybenzone is a common constituent of many commercially available sunscreens providing photoprotection from ultraviolet light incident on the skin. Femtosecond transient electronic and vibrational absorption spectroscopies have been used to investigate the non-radiative relaxation pathways of oxybenzone in cyclohexane and methanol after excitation in the UVA region. The present data suggest that the photoprotective properties of oxybenzone can be understood in terms of an initial ultrafast excited state enol -> keto tautomerization, followed by efficient internal conversion and subsequent vibrational relaxation to the ground state (enol) tautomer.
Item Type: | Journal Article | ||||||
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Subjects: | Q Science > QD Chemistry R Medicine > RS Pharmacy and materia medica |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry Faculty of Science, Engineering and Medicine > Research Centres > Molecular Organisation and Assembly in Cells (MOAC) |
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Library of Congress Subject Headings (LCSH): | Sunscreens (Cosmetics), Spectrum analysis | ||||||
Journal or Publication Title: | Journal of Physical Chemistry Letters | ||||||
Publisher: | American Chemical Society | ||||||
ISSN: | 1948-7185 | ||||||
Official Date: | 26 March 2015 | ||||||
Dates: |
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Volume: | 6 | ||||||
Number: | 8 | ||||||
Page Range: | pp. 1363-1368 | ||||||
DOI: | 10.1021/acs.jpclett.5b00417 | ||||||
Status: | Peer Reviewed | ||||||
Publication Status: | Published | ||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||
Date of first compliant deposit: | 26 October 2016 | ||||||
Date of first compliant Open Access: | 26 October 2016 | ||||||
Funder: | Engineering and Physical Sciences Research Council (EPSRC), University of Warwick. Institute of Advanced Study (IAS), European Research Council (ERC) | ||||||
Grant number: | EP/F500378/1, EP/L005913 (EPSRC) Grant no. 290966 (ERC) |
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