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Relaxation Photoprocesses in a Crowned Styryl Dye and its Metal Complex.
Rusalov, Michael V; Uzhinov, Boris M; Druzhinin, Sergey I; Ivanov, Vladimir L; Melnikov, Michael Ya; Gromov, Sergey P; Sazonov, Sergey K; Alfimov, Michael V.
Afiliación
  • Rusalov MV; Department of Chemistry, MV Lomonosov Moscow State University, Leninskie Gory 1, 119991, Moscow, Russian Federation. mvrusalov@yandex.ru.
  • Uzhinov BM; Department of Chemistry, MV Lomonosov Moscow State University, Leninskie Gory 1, 119991, Moscow, Russian Federation.
  • Druzhinin SI; Universität Siegen, Physikalische Chemie, Adolf-Reichwein-Str. 2, 57076, Siegen, Germany.
  • Ivanov VL; Department of Chemistry, MV Lomonosov Moscow State University, Leninskie Gory 1, 119991, Moscow, Russian Federation.
  • Melnikov MY; Department of Chemistry, MV Lomonosov Moscow State University, Leninskie Gory 1, 119991, Moscow, Russian Federation.
  • Gromov SP; Photochemistry Center, Russian Academy of Sciences, Novatorov 7a, 119421, Moscow, Russian Federation.
  • Sazonov SK; Photochemistry Center, Russian Academy of Sciences, Novatorov 7a, 119421, Moscow, Russian Federation.
  • Alfimov MV; Photochemistry Center, Russian Academy of Sciences, Novatorov 7a, 119421, Moscow, Russian Federation.
J Fluoresc ; 25(6): 1739-47, 2015 Nov.
Article en En | MEDLINE | ID: mdl-26410775
ABSTRACT
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.
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Texto completo: 1 Base de datos: MEDLINE Idioma: En Revista: J Fluoresc Asunto de la revista: BIOFISICA Año: 2015 Tipo del documento: Article
Texto completo
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Base de datos: MEDLINE Idioma: En Revista: J Fluoresc Asunto de la revista: BIOFISICA Año: 2015 Tipo del documento: Article