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The flourescence lifetime of the benzyl radical

✍ Scribed by T. Okamura; T. Obi; I. Tanaka

Publisher: Elsevier Science
Year: 1974
Tongue: English
Weight: 607 KB
Volume: 26
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(74)85400-x

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✦ Synopsis

Time resolved fluorescence of the benzyl, monomethylbenzy1 and dimethylbenzyl radicals trapped in rigid solvents at low temperatures has been observed using the second harmonic of the ruby laser as the exiting source. The fluorescence lifetimes of these radicals are very long (10 -7-1 Oe6 set), which are influenced considerably by the methyl substituents. The long fluorescence lifetimes of the benzyl radical and its methyl derivatives are interpreted in terms of the forbidden character of the first doublet-doublet electronic transition.

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