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High Energy Chemistry

, Volume 46, Issue 4, pp 247–252 | Cite as

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
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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.

Keywords

Proton Transfer Probe Pulse High Energy Chemistry Excited State Absorption Excite State Intramolecular Proton Transfer 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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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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