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Etude du Comportement Photochimique de quelques Diaryl‐1,3‐triazènes
Author(s) -
Julliard Par Michel,
Vernin Gaston,
Metzger Jacques
Publication year - 1980
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19800630216
Subject(s) - chemistry , homolysis , radical , intersystem crossing , photochemistry , hydrogen atom abstraction , singlet state , photodissociation , quenching (fluorescence) , solvent , excited state , organic chemistry , fluorescence , physics , quantum mechanics , nuclear physics
Study of the Photochemical Behaviour of Some Diaryl‐1,3‐triazenes The photolysis of Diaryl‐1,3‐triazenes gives products whose structures are consistent with a cage recombination process of homolytically formed radicals and subsequent abstraction of hydrogen from the solvent molecules by arylamino radicals. In aromatic solvents, a free‐radical chain process leads to the formation of products resulting from the homolytic substitution on the solvent. Quenching experiments show that singlet and triplet excited states are reactive but that intersystem crossing efficiency is low.