Studying dynamic process of photosensitization by ESR method.
By kinetic methods, functional relation of TAN radical, produced in the process of TEMPONE trapping(1)O(2), vs. time during photosensitization was established. Accordingly relative rate constants of generating all kinds of active intermediates through types I and II mechanism of photosensitization can be calculated. Using the formula and experimental results, the relative rate constants of generating(1)O(2), O(-)(2) and PS(-)(2)of three kinds of perylenequinone photosensitizer: HA, HB and CP in DMF-H(2)O and DMSO-H(2)O system were calculated, and then the structure-activity relationship of perylenequinone photosensitizer and the relation between photosensitivity and solvent was studied.
Zhang
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Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.
Zhao
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Zhang
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