Wail Sabbani, B. Orsal, L. P. Bidel, L. Urban, C. Jay-Allemand, Fanny Rolet
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Monitoring photopolymerization of caffeic acid using a UV-C pulsed light generator and silicon photomultiplier
The photopolymerization of caffeic acid (3,4-Dihydroxy-trans-cinnamate) was triggered using pulses of UV-C light at 278 nm during which the fluorescence of caffeic acid was measured and can be considered as an indicator for this pho-topolymerization process. We present a technological approach and evaluate the fluorescence signal of caffeic acid excited by pulses of UV-C radiation using a silicon photomultiplier SiPM in Geiger mode. Furthermore, liquid chromatography - mass spectrometry (LC-MS) analysis showed that a dimer of caffeic acid was successfully photodimerized.
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