%0 Journal Article %T Exploring the Photochemistry of an Ethyl Sinapate Dimer: An Attempt Toward a Better Ultraviolet Filter %+ University of Leeds %+ Department of Chemistry [University of Warwick] %+ University of Oxford %+ Agro-Biotechnologies Industrielles (ABI) %+ Centre Européen de Biotechnologies et Bioéconomie (CEBB) %A Horbury, Michael, D %A Turner, Matthew, a P %A Peters, Jack, S %A Mention, Matthieu %A Flourat, Amandine %A Hine, Nicholas, D M %A Allais, Florent %A Stavros, Vasilios, G %< avec comité de lecture %J Frontiers in Chemistry %I Frontiers Media %V 8 %P 633 %8 2020 %D 2020 %R 10.3389/fchem.2020.00633 %K photoprotection %K femtosecond %K sinapates %K photochemistry %K spectroscopy %Z Chemical Sciences/Theoretical and/or physical chemistryJournal articles %X 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. %G English %2 https://agroparistech.hal.science/hal-03473130/document %2 https://agroparistech.hal.science/hal-03473130/file/fchem-08-00633.pdf %L hal-03473130 %U https://agroparistech.hal.science/hal-03473130 %~ AGROPARISTECH %~ OPENAIRE %~ AGREENIUM %~ AGROPARISTECH-ORG %~ AGROPARISTECH-SPAB %~ ANR