Chemical quenching of singlet oxygen by betanin.

@article{Wendel2016ChemicalQO,
  title={Chemical quenching of singlet oxygen by betanin.},
  author={Monika Wendel and Stanislaw Nizinski and Mateusz Gierszewski and Dorota Prukała and Marek Sikorski and Karolina Starzak and Sławomir Wybraniec and Gotard Burdziński},
  journal={Photochemical \& photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology},
  year={2016},
  volume={15 7},
  pages={
          872-8
        }
}
  • M. Wendel, S. Nizinski, +5 authors G. Burdziński
  • Published 6 July 2016
  • Chemistry
  • Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology
Betanin is the best known natural dye belonging to the betacyanin family. In this work, efficient singlet oxygen quenching by betanin in deuterated water with the rate constant 1.20 ± 0.15 × 10(8) M(-1) s(-1) is reported, deduced from the (1)O2 phosphorescence decays measured as a function of betanin concentration. The quenching occurs by a chemical mechanism, as confirmed by the analysis of the transient absorption kinetics at the probe λ ∼ 535 nm, by comparison of the initial triplet signal… 
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