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Triplet lifetime determination by laser-induced optoacoustic spectroscopy. benzophenone/iodide revisited
Affiliation:1. Institute of Problems of Chemical Physics RAS, Chernogolovka, Moscow region 142432, Russia;2. Institute of Solid State Physics RAS, Chernogolovka, Moscow region 142432, Russia;3. National Research University Higher School of Economics, Faculty of Physics, Moscow, Russia;4. IRLoN, Research Institute of Macroheterocycles, Ivanovo State University of Chemistry and Technology, 153000 Ivanovo, Russia;1. Department of Applied Chemistry and Bioengineering, Graduate School of Engineering, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan;2. Department of Material and Life Science, Graduate School of Engineering, Osaka University, ALCA and SENTAN, Japan Science and Technology Agency (JST), Suita, Osaka 565-0871, Japan;3. Faculty of Science and Engineering, Meijo University, ALCA and SENTAN, Japan Science and Technology Agency (JST), Nagoya, Aichi 468-0073, Japan;4. Department of Chemistry and Nano Science, Ewha Womans University, Seoul 120-750, Republic of Korea;1. Laboratory of Applied Chemistry (LAC), University of May 8th, 1945, BP 401, 24000, Guelma, Algeria;2. Laboratory of Applied Organic Chemistry, Faculty of Chemistry (LAOC), USTHB, BP 32, El-Alia, 16111, Bab-Ezzouar, Algiers, Algeria;1. Institute of Physiologically Active Compounds, Russian Academy of Sciences, 1 Severny Proezd, 142432 Chernogolovka, Moscow Region, Russian Federation;2. Department of Chemistry, M.V. Lomonosov Moscow State University, 1 Leninskie Gory, 119991 Moscow, Russian Federation
Abstract:Time-resolved laser-induced optoacoustic spectroscopy yields the lifetime of the benzophenone triplet with various concentrations of KI as quencher. A broad band piezoelectric PVF2 detector permits the time-resolved detection of the pressure wave. The lifetimes are in good agreement with values obtained from flash photolysis. The dynamic time range of the method is in the nanosecond-microsecond region.
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