Phosphorescence of biacetyl sensitized by benzene in gas phase pulse radiolysis |
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Authors: | Yoshihiko Hatano Satoshi Takao Takumi Ueno |
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Institution: | Laboratory of Physical Chemistry, Tokyo Institute of Technology, Meguro-ku, Tokyo, Japan |
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Abstract: | The phophorescence of biacetyl induced by an energy transfer to biacetyl from triplet benzene produced in the pulse radiolysis of benzene-biacetyl mixtures has been studied. The time required to reach the maximum intensity of phosphorescence, tmax, after the electron pulse, varies as a function of biacetyl pressure at constant benzene pressure (40 torr), which gives the lifetime of triplet benzene τ = (6.7 ± 3.2) × 10?6 s and the rate constant of the energy transfer kC6H6*(T1) + biacetyl = (1.6 ± 0.7) × 10?10 cm3 molecule?1 s?1. |
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