THE NATURAL PHOSPHORESCENCE LIFETIME OF BIACETYL AND BENZIL IN FLUID SOLUTION |
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| Authors: | Mats Almgren |
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| Affiliation: | Department of Physical Chemistry, Chalmers Institute of Technology, Gothenburg, Sweden |
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| Abstract: | Abstract— The quantum yields of phosphorescence and fluorescence and the phosphorescence lifetime have been determined for biacetyl in benzene, p-xylene, n-heptane, and water, and for benzil in n-heptane at 22C. The following values for the fluorescence quantum yield and natural phosphorescence lifetime were obtained: For biacetyl in benzene, 2.7 times 10-3 and 7.8 msec, in p-xylene, 2.5 times 10-3 and 10.8 msec, in n-heptane, 2.9 times 10-3 and 10.8 msec, in water, 1.1 times 10-3 and 10.0 msec, and for benzil in n-heptane, 1.1 times 10-3 and 10.4 msec. |
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