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The fate of oxygen in the quenching of excited singlet states

โœ Scribed by P.B. Merkel; W.G. Herkstroeter

Publisher
Elsevier Science
Year
1978
Tongue
English
Weight
472 KB
Volume
53
Category
Article
ISSN
0009-2614

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โœฆ Synopsis

Measurements of the efficiency of rubrene-sensitized photooxidation of 1,3-diphenylisobenzofuran imply that direct formation of singlet oxygen via oxygen quenching of excited rubrene singlets is inefficient. This contrasts with recent puhlications based upon studies of self-sensitized rubrene photooxidation. The observed inefficiency can be rkionalized in terms of the spin-allowed decay of an initially formed 3(Tt + 'A) complex state to a lower energy 3(Tr + 32) state prior to complex dissociation.

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