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Ultrafast photoprotecting sunscreens in natural plants

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Baker, Lewis A., Horbury, Michael D., Greenough, Simon E., Allais, Florent, Walsh, Patrick S., Habershon, Scott and Stavros, Vasilios G. (2015) Ultrafast photoprotecting sunscreens in natural plants. The Journal of Physical Chemistry Letters, 7 (1). pp. 56-61. doi:10.1021/acs.jpclett.5b02474 ISSN 1948-7185.

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Official URL: http://dx.doi.org/10.1021/acs.jpclett.5b02474

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Abstract

We explore the ultrafast photoprotective properties of a series of sinapic acid derivatives in a range of solvents, utilizing femtosecond transient electronic absorption spectroscopy. We find that a primary relaxation mechanism displayed by the plant sunscreen sinapoyl malate and other related molecular species may be understood as a multistep process involving internal conversion of the initially photoexcited 11ππ* state along a trans–cis photoisomerization coordinate, leading to the repopulation of the original trans ground-state isomer or the formation of a stable cis isomer.

Item Type: Journal Article
Subjects: Q Science > QK Botany
S Agriculture > SB Plant culture
Divisions: Faculty of Science, Engineering and Medicine > Science > Chemistry
Faculty of Science, Engineering and Medicine > Science > Centre for Scientific Computing
Library of Congress Subject Headings (LCSH): Life sciences, Plants -- Metabolism, Photosynthesis, Ultraviolet radiation, Ecology, Plant ecology, Botany
Journal or Publication Title: The Journal of Physical Chemistry Letters
Publisher: American Chemical Society
ISSN: 1948-7185
Official Date: 10 December 2015
Dates:
DateEvent
10 December 2015Published
10 December 2015Accepted
5 November 2015Submitted
Volume: 7
Number: 1
Page Range: pp. 56-61
DOI: 10.1021/acs.jpclett.5b02474
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access (Creative Commons)
Funder: Engineering and Physical Sciences Research Council (EPSRC)
Grant number: EP/F500378/1, EP/J007153

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