Lifetime and quenching rate constants for a flourescent excited state of tetramethylethylene (2,3-dimethyl-2-butene)

The collisionless lifetime of a flourescent excited state of tetramethylethylene (TME) vapor when excited at 235 nm is 20.8±0.9 ns and the self-quenching rate constant is (2.97±0.01) × 10 −10 cm 3 molecule −1 s −1. The rate constants for quenching of TME vapor by O 2, benzene. CCl 4, Xe, N 2 and CH...

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Published inChemical physics letters Vol. 120; no. 6; pp. 491 - 495
Main Authors Wickramaaratchi, M.A., Preses, J.M., Weston, Ralph E.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 25.10.1985
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Summary:The collisionless lifetime of a flourescent excited state of tetramethylethylene (TME) vapor when excited at 235 nm is 20.8±0.9 ns and the self-quenching rate constant is (2.97±0.01) × 10 −10 cm 3 molecule −1 s −1. The rate constants for quenching of TME vapor by O 2, benzene. CCl 4, Xe, N 2 and CH 4 are also repeated. In the vapor phase, the lifetime strongly depends on the excitation energy. The lifetime of liquid TME is 10±2 ns at 25±2°C.
ISSN:0009-2614
1873-4448
DOI:10.1016/0009-2614(85)80540-6