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Exploring the Photochemistry of an Ethyl Sinapate Dimer: An Attempt Toward a Better Ultraviolet Filter

Abstract : The photochemistry and photostability of a potential ultraviolet (UV) radiation filter, dehydrodiethylsinapate, with a broad absorption in the UVA region, is explored utilizing a combination of femtosecond time-resolved spectroscopy and steady-state irradiation studies. The time-resolved measurements show that this UV filter candidate undergoes excited state relaxation after UV absorption on a timescale of ∼10 picoseconds, suggesting efficient relaxation. However, steady-state irradiation measurements show degradation under prolonged UV exposure. From a photochemical standpoint, this highlights the importance of considering both the ultrafast and "ultraslow" timescales when designing new potential UV filters.
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https://hal-agroparistech.archives-ouvertes.fr/hal-03473130
Contributor : Amandine Flourat Connect in order to contact the contributor
Submitted on : Thursday, December 9, 2021 - 5:08:04 PM
Last modification on : Friday, January 7, 2022 - 11:08:13 AM

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Michael Horbury, Matthew Turner, Jack Peters, Matthieu Mention, Amandine Flourat, et al.. Exploring the Photochemistry of an Ethyl Sinapate Dimer: An Attempt Toward a Better Ultraviolet Filter. Frontiers in Chemistry, Frontiers Media, 2020, 8, pp.633. ⟨10.3389/fchem.2020.00633⟩. ⟨hal-03473130⟩

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