High Energy Chemistry

, Volume 46, Issue 4, pp 247–252

Femtosecond dynamics of excited-state intramolecular proton transfer in o-tosylaminobenzaldehyde

  • M. N. Khimich
  • V. A. Nadtochenko
  • L. D. Popov
  • A. S. Burlov
  • V. L. Ivanov
  • N. N. Denisov
  • F. E. Gostev
  • I. V. Shelaev
  • O. M. Sarkisov
  • B. M. Uzhinov
Photochemistry

DOI: 10.1134/S001814391204008X

Cite this article as:
Khimich, M.N., Nadtochenko, V.A., Popov, L.D. et al. High Energy Chem (2012) 46: 247. doi:10.1134/S001814391204008X

Abstract

Dynamics of excited-state intramolecular proton transfer (ESIPT) in o-tosylaminobenzaldehyde has been studied by femtosecond absorption spectroscopy with a time resolution of 30 fs. The characteristic time of this process is ∼100 fs. Differential absorption rate curves exhibit oscillations that are consistent with theoretically predicted ESIPT-promoting vibrational modes. Efficient nonradiative deactivation with a rate constant of 6.25 × 1010 s−1 occurs in the excited product of proton transfer, with internal rotation followed by intersystem crossing being one of the feasible deactivation pathways.

Copyright information

© Pleiades Publishing, Ltd. 2012

Authors and Affiliations

  • M. N. Khimich
    • 1
  • V. A. Nadtochenko
    • 2
  • L. D. Popov
    • 3
  • A. S. Burlov
    • 3
  • V. L. Ivanov
    • 1
  • N. N. Denisov
    • 2
  • F. E. Gostev
    • 2
  • I. V. Shelaev
    • 2
  • O. M. Sarkisov
    • 2
  • B. M. Uzhinov
    • 1
  1. 1.Moscow State UniversityMoscowRussia
  2. 2.Semenov Institute of Chemical PhysicsRussian Academy of SciencesMoscowRussia
  3. 3.South Federal UniversityRostov-on-DonRussia

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