P. G. Bowers's scientific contributions
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Publications (2)
Quantum yields of triplet state formation and extinction coefficients of the triplet states have been determined by direct depletion methods for solutions of anthracene, phenanthrene, 1,2,5,6-dibenzanthracene, fluorescein, dibromofluorescein, eosin and erythrosin. The values obtained for the hydrocarbons are in reasonable agreement with those obtai...
The method of flash photolysis has been used for direct measurement of the quantum yields of triplet formation in dilute chlorophyll solutions at 23 ^circC. In ether solution, the triplet yields were found to be 0.64 and 0.88 for chlorophyll a and b, respectively. In very dry hydrocarbon solution, the yields decrease by at least a factor of 5. It i...
Citations
... Estimates of the quantum yields of intersystem crossing to the triplet state (Φ ST ) of the dyes in the presence of DNA were obtained by flash photolysis from the actinometric data using as an actinometer an aqueous solution of eosin (Sigma-Aldrich), for which, at pH 9, Φ ST = 71 ± 10% 4 [28]. The sensitivity of the experimental setup was about 0.1-0.2%. ...
... It is well known that the lifetimes of singlet and triplet Chl, and the rates of ISC which enable 3 Chl * formation in the first place, are dependent on the solvent 31,[44][45][46][47] . It therefore follows that the diverse protein and membrane environments found in biological organisms would also influence these lifetimes and ISC rates 44,[48][49][50] . ...
