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Photophysical and photochemical processes of riboflavin (vitamin B2) by means of the transient absorption spectra in aqueous solution

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Abstract

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, both3RF* and hydrated electron (eaq) formed from photoionization could be detected. Photobiological implications have been inferred on the basis of reactivity of3RF* 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.

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Authors and Affiliations

  1. Laboratory of Radiation Chemistry, Shanghai Institute of Nuclear Research, Chinese Academy of Sciences, 201800, Shanghai, China

    Changyuan Lu, Zhenhui Han, Guanshu Liu, Xichen Cai, Yuling Chen & Side Yao

Authors
  1. Changyuan Lu
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  2. Zhenhui Han
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  3. Guanshu Liu
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  4. Xichen Cai
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  5. Yuling Chen
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  6. Side Yao
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Correspondence to Side Yao.

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Lu, C., Han, Z., Liu, G. et al. Photophysical and photochemical processes of riboflavin (vitamin B2) by means of the transient absorption spectra in aqueous solution. Sc. China Ser. B-Chem. 44, 39–48 (2001). https://doi.org/10.1007/BF02879734

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  • DOI: https://doi.org/10.1007/BF02879734

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