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Photoionization and recombination fluorescence in liquid benzene and alkylbenzenes

✍ Scribed by C. Fuchs; R. Voltz

Publisher
Elsevier Science
Year
1973
Tongue
English
Weight
487 KB
Volume
18
Category
Article
ISSN
0009-2614

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✦ Synopsis

The variation of fluorescence quantum yield with esqitation wavclsngth in the vacuum ultra-violet was studied for liquid benzene and alkylbenzenes containing small amounts of a highly efficient luminescent solute and clcctron scavengers. prom the analysis of the results, it is concluded that the molecular states in the liquids essentially decay by autoionization for excitation energies larger than a characteristic thre.&oldvalue (7.0 eV for benzene). Efficient recombination fluorescence indicates that charge separation is followed by geminate neutralization, without spin relxxation, in the first exited singlet state of the molecules.

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