Russian Journal of General Chemistry

, Volume 75, Issue 5, pp 790–794 | Cite as

Fluorescence Depolarization Kinetics of Neutral and Charged 2-(3′-Pyridyl)oxazole

  • V. V. Volchkov
  • G. V. Dem’yanov
  • M. V. Rusalov
  • T. I. Syreishchikova


The results of measurements of the starionary and time-resolved flurescence anisotropy and of the AM1 and INDO/S calculations were used for conformational analysis of a neutral molecule of the 2-(3′-pyridyl)oxazole series and of its N-ethyl cation. Most probably, the excitation of the quasi-planar rotamers of the cation, in contrast to the neutral molecule, is accompanied by a ∼90° turn of its Et-py fragment with the formation of a twisted charge-transfer conformation. According to the data obtained for ethanol and glycerol solutions and for the poly(methyl methacrylate) matrix at 20°C, the efficiency of the intramolecular relaxation is independent of the viscosity.


Methyl Viscosity Glycerol Anisotropy Methacrylate 


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Copyright information

© MAIK “Nauka/Interperiodica” 2005

Authors and Affiliations

  • V. V. Volchkov
    • 1
  • G. V. Dem’yanov
    • 2
  • M. V. Rusalov
    • 1
  • T. I. Syreishchikova
    • 2
  1. 1.Moscow State UniversityMoscowRussia
  2. 2.Lebedev Physical InstituteRussian Academy of SciencesMoscowRussia

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