Ultrafast Photoprotecting Sunscreens in Natural Plants

Lewis Baker; Michael D. Horbury; Simon E. Greenough; Florent Allais; Patrick S. Walsh; Scott Habershon; Vasilios G. Stavros

Ultrafast Photoprotecting Sunscreens in Natural Plants

Lewis Baker ¹ Michael D. Horbury ¹ Simon E. Greenough ¹ Florent Allais ^{2, 3} Patrick S. Walsh ⁴ Scott Habershon ¹ Vasilios G. Stavros ¹

1 Department of Chemistry University of Warwick

2 GMPA - Génie et Microbiologie des Procédés Alimentaires

3 ABI - Agro-Biotechnologies Industrielles

4 Department of Chemistry

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.

Document type :

Journal articles

Domain :

Life Sciences [q-bio]

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https://hal-agroparistech.archives-ouvertes.fr/hal-01598628
Contributor : Eva Legras <>
Submitted on : Friday, September 29, 2017 - 5:24:05 PM
Last modification on : Thursday, September 26, 2019 - 10:58:03 AM

Ultrafast Photoprotecting Sunscreens in Natural Plants

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Ultrafast Photoprotecting Sunscreens in Natural Plants

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