Reasons for the dependence of the decay and quantum yield of the fluorescence of polar compounds on the viscosity and temperature of the solution
β Scribed by V. S. Pavlovich; S. V. Zablotskii; L. G. Pikulik
- Publisher
- Springer US
- Year
- 1989
- Tongue
- English
- Weight
- 478 KB
- Volume
- 50
- Category
- Article
- ISSN
- 0021-9037
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The change in fluorescence quantum yield for indole 2s a function of ercitition wavelengg between 250 and 220 run is found to vary with the static dielectric constant of various alcohol-\vater mixtures at 296 K. The supports rhe intermediacy of I CTTS sbte in tile photoionization process.
Fluorescence intensities and lifetimes of 1, I '-diethyl-2,2'-cyanine chloride( pseudoisocyanine) at I .O x 1 O-\* M in glycerol have been measured in the temperature range 84-298 K. Comparison with previous results shows that the solution consists of dye monomers. Arrhenius plots yield two activat