Physical quenching and chemical reaction of singlet molecular oxygen with azo dyes

P Bortolus, S Monti, A Albini, E Fasani…

文献索引：Bortolus, Pietro; Monti, Sandra; Albini, Angelo; Fasani, Elisa; Pietra, Silvio Journal of Organic Chemistry, 1989 , vol. 54, # 3 p. 534 - 540

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被引用次数: 24

摘要

The quenching rate constants of singlet oxygen lifetime by dialkylamino azo dyes 1 and tautomeric azo dyes 2 and 5 (as well as azo-and hydrazone-model methylated derivatives 3 and 4) were determined by measuring the 1.27-gm'Oz emission lifetime, and the values obtained are in the range 106-108 M-'s-'. The quenching involves a charge-transfer interaction, and different correlations with the oxidation potentials of the two classes of azo ...