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Determination of the phosphorescence quantum yield of singlet molecular oxygen (1Δg) in benzene

✍ Scribed by R. Schmidt; H.-D. Brauer; K.H. Drexhage

Publisher
Elsevier Science
Year
1987
Tongue
English
Weight
441 KB
Volume
138
Category
Article
ISSN
0009-2614

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✦ Synopsis

The quantum yield for the O2 '$-+%g radiative transition was determined in benzene by comparison of the singlet oxygen phosphorescence at 1275 nm, sensitized by 9,1O_dicyanoanthracene, with the fluorescence of five different dyes emitting in the same spectral region. A value of Qp= (2.5+ 1.3) x 10m4 was obtained, which is thirty times higher than expected from an earlier investigation on the emission quantum yield in carbon tetrachloride.

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