ISSN:
0021-8383
Keywords:
Chemistry
;
Organic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
1,2,3-Triazabutadienes. VIII. Investigations of the Mechanism of the Sensitized Photoisomerization of 1-Aryl-3-[3-methyl-benzthiazolinyliden-(2)]-triazenes.It is possible to sensitize the photochemical cis-trans-isomerization of triazabutadienes by sensitizers with tripletenergies ranging from 40 to 80 kcal/mol. It was proved by flash photolysis that triazabutadienes quench the triplet states of sensitizers. The dependence of the photostationary state on the triplet energy of the sensitizer as well as the dependence of the quantum yields of the sensitized photoisomerization on the concentration of triazabutadiene were investigated, and the desactivation ratios of the sensitized photoisomerization were determinated. The found correspondence of desactivation ratios of the direct and sensitized photoisomerization make a triplet mechanism in both cases probable.
Additional Material:
4 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/prac.19783200414
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