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Exploring the Photochemistry of an Ethyl Sinapate Dimer: An Attempt Toward a Better Ultraviolet Filter.
Frontiers in Chemistry ( IF 5.5 ) Pub Date : 2020-06-17 , DOI: 10.3389/fchem.2020.00633
Michael D Horbury 1 , Matthew A P Turner 2 , Jack S Peters 3 , Matthieu Mention 4 , Amandine L Flourat 4 , Nicholas D M Hine 2 , Florent Allais 4 , Vasilios G Stavros 2
Affiliation  

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.



中文翻译:

探索西奈酸乙酯二聚体的光化学:尝试更好的紫外线滤光片。

飞秒时间分辨光谱法和稳态辐照研究相结合,探索了潜在的紫外线(UV)辐射滤光片脱氢二乙基芥子酸酯的光化学和光稳定性,在UVA区域具有广泛的吸收。时间分辨的测量结果表明,该候选紫外线滤光片在吸收紫外线后约10皮秒的时间范围内经历了激发态弛豫,表明有效弛豫。但是,稳态辐射测量表明,长时间的紫外线照射会导致降解。从光化学的角度来看,这突出了在设计新的潜在UV滤光片时同时考虑超快和“超低”时标的重要性。

更新日期:2020-07-28
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