The Arrhenius parameters of the bimolecular rate constants for the decay of several phenoxyl radicals in aqueous solution were measured. The p-halophenoxyl radicals (F, C1, and Br) decay in a diffusion controlled reaction as the activation energies are the same as that of diffusion of water (16 ? 1.
Temperature dependence of the nonradiative decay of indoles in solution
β Scribed by N. Glasser; H. Lami
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 207 KB
- Volume
- 142
- Category
- Article
- ISSN
- 0022-2860
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π SIMILAR VOLUMES
The temporal behavior of the 07 -center quartet-state emission in calcium oxide has been studied as a function of temperature. The enhanced phosphorescence decay rate at higher temperatures is attributed to an Orbach-type thermalization among the quartet-state spin sublevels.
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 rea