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Temperature dependence of the deactivation of electronically excited indazoles in solution

✍ Scribed by P. Bircher; E.R. Pantke; H. Labhart

Publisher
Elsevier Science
Year
1971
Tongue
English
Weight
346 KB
Volume
11
Category
Article
ISSN
0009-2614

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✦ Synopsis

The T-T spectra, the triplei quantum yield $IJ-and the fluorescence quantum yield QF of 2-tert butyI+methylindazole and 1,3dimethylindazole have been measured in the temperature range of +25" to -L96"C in solucnts of different viscosities. It could be shown that in all c;ises where photochemical reactions from the fust excited singlet state are absent, the sum #JF + @ equals unity within the limits of error. Contrary to the quite numerous experimental results on the deactivation mechanisms of electronic excited states of aromatic hydrocarbon molecules [l--9],

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