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 language | English |
|---|---|
| Journal | Molecular Crystals and Liquid Crystals |
| Volume | 427 |
| DOIs | |
| Publication status | Published - 30 Nov 2005 |
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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 journal › Article
}
TY - JOUR
T1 - Investigation of conformational and electron properties of biscyanine dyes
AU - Ibrayev, Niyazbek Kh
AU - Yeroshina, Svetlana A.
AU - Ishchenko, Aleksandr A.
AU - Mushkalo, Igor L.
PY - 2005/11/30
Y1 - 2005/11/30
N2 - 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.
AB - 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.
KW - Biscyanine dyes
KW - Covalently linked dimer
KW - Exciton splitting
KW - Fluorescence
UR - http://www.scopus.com/inward/record.url?scp=27944491136&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=27944491136&partnerID=8YFLogxK
U2 - 10.1080/15421400590892145
DO - 10.1080/15421400590892145
M3 - Article
VL - 427
JO - Molecular Crystals and Liquid Crystals
JF - Molecular Crystals and Liquid Crystals
SN - 1542-1406
ER -