On the determination of quantum yields for singlet molecular oxygen photosensitization
β Scribed by S. Nonell; R.W. Redmond
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 234 KB
- Volume
- 22
- Category
- Article
- ISSN
- 1011-1344
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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 10m
The absolute quantum yield of the photosensitized luminescence from lag 0 2 has been measured in air-saturated solutions of tetraphenylporphin in CC14, the value (4.4 + 1.3) X 10 -3 being obtaified. The radiative lifetime of lAg O 2 is approximately constant in all solvents investigated and is 4.1 -