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Controlled chemiluminescence during the oxidation of tetraaryl-Δ2,2′-biimidazolidines by triplet oxygen in the presence of fluorescers

✍ Scribed by F. Roeterdink; J.W. Scheeren; W.H. Laarhoven

Publisher
Elsevier Science
Year
1983
Tongue
French
Weight
240 KB
Volume
24
Category
Article
ISSN
0040-4039

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✦ Synopsis

Tetraaryl -A2$2' -biimidazolidines (3) are stable compounds in the solid state. In solu, tion they react with triplet oxygen. In the presence of fluorescers chemiluminescence is observed. The intensity and lifetime of the chemiluminescence depends on the substituents at the aryl groups and on the solvent. Electron-rich alkenes devoid of allylic hydrogens can generally be oxidized by singlet oxygen into dioxetanesl. These products decompose thermally into carbonyl compounds, and in most cases the reaction is accompanied by the emission of light2 with a spectrum identical with the fluorescence (or phosphorescence) spectrum of the formed carbonyl compounds.

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