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Direct measurement of the lifetime of 1Δ oxygen in solution

✍ Scribed by P.B. Merkel; D.R. Kearns

Publisher
Elsevier Science
Year
1971
Tongue
English
Weight
279 KB
Volume
12
Category
Article
ISSN
0009-2614

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✦ Synopsis

Much of the current interest in the properties of singlet oxygen is due to the discovery that electronically excited singlet oxygen molecules, produced by energy transfer from triplet state sensitizers to oxygen, are the reactive intermediates in dye sensitized photooxygenation of unsaturated hydrocarbons [l--4]. Although both 1Z and *A oxygen are generated by the quenching of triplet state sensitizers [5,6], only *A is important for reactions in solution, due to the rapid decay of lz1 (estimated lifetime 2 IO-10 see) [7] . Under kw! photo-mygtnati& conditions the two important competitive decay modes for '0 are Volume 12, number 1

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