Photochemistry of the photoinitiator 4-[2′-N-N,-(diethylaminoeethoxy]-benzophenone. Spectroscopy, radical generation and quenching
作者： A. Costela , J. Dabrio , J.M. Figuera , I. García-Moreno , H. Gsponer
DOI: 10.1016/1010-6030(95)04135-9
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摘要: Abstract The photochemistry at 308 nm of the photoinitiator 4-[2′- N - -(diethylamino)ethoxy]-benzophenone was studied. phosphorescence emission and lifetime lowest triplet state were characterized. 4-alkymiminoketyl radical generated in ground through hydrogen atom abstraction by initiator. intermolecular vs. intramolecular character this process analysed. excited to first doublet using 340 pulses from a dye laser. temporal evolution concentration states ws followed laser-induced fluorescence (LIF) intensity measurements respectively. quenching ketyl its precursor, O 2 methyl methacrylate styrene determined. effect solvent on Detailed studies also performed.
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