LASER PHOTOLYSIS OF TRYPTOPHAN AQUEOUS SOLUTION

The photolysis of Trp aqueous solution was studied in detail in our laboratory recently. The absorptions at 330nm and 530nm（580nm, pH＜5） were ascribed to carbon-center and nitrogen-center radical respectively. The behaviors of these species at different pH were observed. The ejected electrons are captured largely by Trp itself, giving a new absorption at 350nm. The triplet state of Trp with 460nm absorption decays following second order kinetics and the photolysis process is carried on with single photon. It was suggested that the ejected electrons were related to the triplet state of Trp.