Investigation of conformational and electron properties of biscyanine dyes

Niyazbek Kh Ibrayev, Svetlana A. Yeroshina, Aleksandr A. Ishchenko, Igor L. Mushkalo

    Research output: Contribution to journalArticle

    3 Citations (Scopus)

    Abstract

    The spectral and luminescent characteristics of four biscyanine dyes and corresponding monomer dye in ethanol solutions and in polyvinyl butyral have been investigated. The influence of angle between chromophores of biscyanine molecules on splitting and intensity of absorption bands has been discussed. It has been shown that the splitting of the biscyanine excited electron level S1 is caused both dipole and resonant chromophor interactions. It has been found that the fluorescence quantum yields of the biscyanines in ethanol at room temperature are 0.005-0.02. The introduction of biscyanines in a polymer matrix, which provides rigidity of a polymethine chain, results in reduction of molecules trans-cis isomerization and consequently increase of fluorescence quantum yields.

    Original languageEnglish
    JournalMolecular Crystals and Liquid Crystals
    Volume427
    DOIs
    Publication statusPublished - 30 Nov 2005

    Fingerprint

    Quantum yield
    Ethanol
    ethyl alcohol
    Dyes
    dyes
    Fluorescence
    fluorescence
    Molecules
    Electrons
    Chromophores
    Isomerization
    Polymer matrix
    rigidity
    Rigidity
    chromophores
    isomerization
    molecules
    Absorption spectra
    electrons
    Coloring Agents

    Keywords

    • Biscyanine dyes
    • Covalently linked dimer
    • Exciton splitting
    • Fluorescence

    ASJC Scopus subject areas

    • Chemistry(all)
    • Materials Science(all)
    • Condensed Matter Physics

    Cite this

    Investigation of conformational and electron properties of biscyanine dyes. / Ibrayev, Niyazbek Kh; Yeroshina, Svetlana A.; Ishchenko, Aleksandr A.; Mushkalo, Igor L.

    In: Molecular Crystals and Liquid Crystals, Vol. 427, 30.11.2005.

    Research output: Contribution to journalArticle

    Ibrayev, Niyazbek Kh ; Yeroshina, Svetlana A. ; Ishchenko, Aleksandr A. ; Mushkalo, Igor L. / Investigation of conformational and electron properties of biscyanine dyes. In: Molecular Crystals and Liquid Crystals. 2005 ; Vol. 427.
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