Oxygen quenching of fluorescence of organic dye molecules
β Scribed by John Olmsted III
- Publisher
- Elsevier Science
- Year
- 1974
- Tongue
- English
- Weight
- 382 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0009-2614
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π SIMILAR VOLUMES
ANtract--The fluorescence quenching of polystyrene by oxygen at room temperature was investigated. The diffusion coefficient of oxygen in polystyrene films was taken as 3.1 x 10 -7 cm2/sec; the energy migration coefficient of polystyrene in the excited singlet state was estimated as 6 x 10 6 cm2/sec
Reccwcd 17 Scptcmber 1981.m finai form I2 Novcmbcr 1981 Absolute quantum yuMs of smglcet oxygen productton by xornztx pbotosens~ttrcrs have been mcasurcd. When an cucrgy gap (AESt\_Tt) OF the aromattc molecule 1s less than 7880 cm-t the absolute quantum yield does not cwced 1 md If AK&-T, > 7880 Cm-
Ruorescence quenching of aromatic molecules by inorganic anions in H20-EtOH mixtures at 300 K has been studied quantitatively. A linear relationship between log k. (kq is the quenching rate constant) and AC (the free energy change in electron transfer) is obtained indicating that the &on-mduced quen