Journal of Fluorescence

, Volume 25, Issue 6, pp 1739–1747 | Cite as

Relaxation Photoprocesses in a Crowned Styryl Dye and its Metal Complex

  • Michael V. Rusalov
  • Boris M. Uzhinov
  • Sergey I. Druzhinin
  • Vladimir L. Ivanov
  • Michael Ya. Melnikov
  • Sergey P. Gromov
  • Sergey K. Sazonov
  • Michael V. Alfimov


The effects of solvent and crown-ether moiety on spectral properties of pyridinium styryl dye were studied by steady-state absorption and fluorescent spectroscopy. Analysis of viscosity and polarity effects on fluorescence quantum yield and Stokes shift permitted us to suggest that there is a two stage process of excited state relaxation. The macrocyclic moiety has a little influence on the first stage of relaxation, which manifests itself in a magnitude of Stokes shift, but suppresses considerably the second stage, which manifests itself in a magnitude of fluorescence quantum yield. The metal complex shows an additional stage of excited state relaxation, namely, photorecoordination of metal cation within the macrocyclic cavity.


Crown ether Styryl dye Complex formation Photorecoordination Molecular rotor 


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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  • Michael V. Rusalov
    • 1
  • Boris M. Uzhinov
    • 1
  • Sergey I. Druzhinin
    • 2
  • Vladimir L. Ivanov
    • 1
  • Michael Ya. Melnikov
    • 1
  • Sergey P. Gromov
    • 3
  • Sergey K. Sazonov
    • 3
  • Michael V. Alfimov
    • 3
  1. 1.Department of ChemistryMV Lomonosov Moscow State UniversityMoscowRussian Federation
  2. 2.Universität Siegen, Physikalische ChemieSiegenGermany
  3. 3.Photochemistry CenterRussian Academy of SciencesMoscowRussian Federation

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