Photosensitized luminescence of singlet oxygen in solution

Krasnovskiĭ, A.A.

Biofizika 21(4): 748-749

1976


ISSN/ISBN: 0006-3029
PMID: 1009166
Document Number: 108694
The Photoinduced afterglow of singlet oxygen was found in air saturated solutions of protoporphyrin and naphtacene in carbon tetrachloride. The excitation spectra coincide with the absorption spectra of the pigments. The lifetime is near to 7 msec, the quantum yield--to 3-10(-5). The emission maximum lies at 1270 nm. The data suggest that the luminescence is generated by oxygen in the 1 delta g state produced by the energy transfer from triplet molecules of the pigments to O2.

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