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

C. Lu, Z. Han, Guanshu Liu, X. Cai, Y. Chen, S. Yao

Research output: Contribution to journalArticle

Abstract

Using time-resolved techniques of 337 and 248 nm laser flash photolysis, the photophysical 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 could 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.

Original languageEnglish (US)
Pages (from-to)39-48
Number of pages10
JournalScience in China. Series C, Life sciences / Chinese Academy of Sciences
Volume44
Issue number1
StatePublished - Feb 2001
Externally publishedYes

Fingerprint

Photochemical Processes
Riboflavin
absorption spectrum
riboflavin
photolysis
vitamin
aqueous solutions
Absorption spectra
aqueous solution
Photolysis
laser
electron
lasers
Lasers
Electrons
irradiation
Photoionization
Energy Transfer
hydrogen
energy transfer

Keywords

  • Excited triplet state
  • Laser flash photolysis
  • Photoionization
  • Redox reaction
  • Riboflavin (RF)

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Agricultural and Biological Sciences (miscellaneous)
  • Chemistry(all)

Cite this

@article{de679cd427db484db2d6aec55caca332,
title = "Photophysical and photochemical processes of riboflavin (vitamin B2) by means of the transient absorption spectra in aqueous solution",
abstract = "Using time-resolved techniques of 337 and 248 nm laser flash photolysis, the photophysical 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 could 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.",
keywords = "Excited triplet state, Laser flash photolysis, Photoionization, Redox reaction, Riboflavin (RF)",
author = "C. Lu and Z. Han and Guanshu Liu and X. Cai and Y. Chen and S. Yao",
year = "2001",
month = "2",
language = "English (US)",
volume = "44",
pages = "39--48",
journal = "Science in China, Series C: Life Sciences",
issn = "1006-9305",
publisher = "Science in China Press",
number = "1",

}

TY - JOUR

T1 - Photophysical and photochemical processes of riboflavin (vitamin B2) by means of the transient absorption spectra in aqueous solution

AU - Lu, C.

AU - Han, Z.

AU - Liu, Guanshu

AU - Cai, X.

AU - Chen, Y.

AU - Yao, S.

PY - 2001/2

Y1 - 2001/2

N2 - Using time-resolved techniques of 337 and 248 nm laser flash photolysis, the photophysical 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 could 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.

AB - Using time-resolved techniques of 337 and 248 nm laser flash photolysis, the photophysical 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 could 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.

KW - Excited triplet state

KW - Laser flash photolysis

KW - Photoionization

KW - Redox reaction

KW - Riboflavin (RF)

UR - http://www.scopus.com/inward/record.url?scp=0035244712&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035244712&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0035244712

VL - 44

SP - 39

EP - 48

JO - Science in China, Series C: Life Sciences

JF - Science in China, Series C: Life Sciences

SN - 1006-9305

IS - 1

ER -