Laser flash photolysis studies on the triplet state of aromatic hydrocarbons in the vapour phase |
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| Affiliation: | 1. Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou 313001, China;2. State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China;3. Department of Information and Technology, Kunming University, Kunming 650214, China;1. School of Materials Science and Engineering, Chang’an University, Xi’an 710064, China;2. School of Information Engineering, Chang’an University, Xi’an 710064, China;3. School of Physics, Shandong University, Jinan 250100, China;4. Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China |
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| Abstract: | Triplet—triplet (T1 → Tn) absorption spectra under low resolution and decay times have been measured for a variety of simple fluorine-substituted benzenes in the vapour phase. Assignments for the observed transitions were made on the basis of CNDO calculations and comparison with the corresponding 3B1u → 3E2g− transition in benzene. Decay times measured were in the region 200 – 250 ns, orders of magnitude shorter than the corresponding decay time for benzene itself. Reasons for this shortening are briefly discussed. |
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