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Using time-resolved techniques of 337 and 248 nm laser flash photolysis, the photo-physical and photochemical processes of riboflavin (RF, vitamin B2) were studied in detail in aqueous solution. The excited triplet state of riboflavin (3RF*) was produced with 337 nm laser, while under 248 nm irradiation, both 3RF* and hydrated electron (eaq) formed from photoionizationcould be detected. Photobiological implications have been inferred on the basis of reactivity of 3RF* including energy transfer, electron transfer and hydrogen abstraction. The RF.+ was generated by oxidation of SO4.- radical with the aim of confirming the results of photolysis.
The time-resolved techniques of 337 and 248 nm laser flash photolysis, the photo-physical and photochemical processes of riboflavin (RF, vitamin B2) were studied in detail in aqueous solution. The excited triplet state of riboflavin (3RF *) was produced with 337 nm laser, while under 248 nm irradiation, both 3RF * and hydrated electron (eaq) formed from photoionization can be detected. Photobiological implications have been transferred on the basis of reactivity of 3 RF * including energy transfer, electron transfer and hydrogen abstraction. The RF . + was generated by oxidation of SO4.- radical with the aim of confirming the results of photolysis.