Triplet states of 3,3′-alkylsubstituted thiacarbocyanine dimers and dimeric complexes with cucurbit[8]uril in water
- Авторы: Zakharova G.V.1, Gutrov V.N.1, Plotnikov V.G.1,2, Chibisov A.K.1, Alfimov M.V.1,2
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Учреждения:
- Photochemistry Center
- Tomsk State University
- Выпуск: Том 51, № 5 (2017)
- Страницы: 345-349
- Раздел: Photonics
- URL: https://bakhtiniada.ru/0018-1439/article/view/157251
- DOI: https://doi.org/10.1134/S0018143917050150
- ID: 157251
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Аннотация
Alkylsubstituted thiacarbocyanines (3,3′-diethylthiacarbocyanine, D1, and 3,3′-disulfopropylthiacarbocyanine, D2), existing in water as monomers and dimers, manifest the ability to transition to the triplet state. The spectrum of triplet-triplet (T–T) absorption of the D2 dimers is shifted in the range higher than 590 nm by 20 nm to the red in comparison with the T–T spectrum of monomers. The D1 dimers in the presence of cucurbit[8]uril form a dimeric complex with two bands in the differential absorption spectrum. The band at 550 nm belongs to the triplet-triplet absorption of the dimeric complexes, and the band in the range of 620–700 nm is the result of charge transfer in the triplet state. The rate constants of deactivation for these triplet states coincide.
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G. Zakharova
Photochemistry Center
Автор, ответственный за переписку.
Email: gvzakharova@gmail.com
Россия, Moscow, 119421
V. Gutrov
Photochemistry Center
Email: gvzakharova@gmail.com
Россия, Moscow, 119421
V. Plotnikov
Photochemistry Center; Tomsk State University
Email: gvzakharova@gmail.com
Россия, Moscow, 119421; Tomsk, 634050
A. Chibisov
Photochemistry Center
Email: gvzakharova@gmail.com
Россия, Moscow, 119421
M. Alfimov
Photochemistry Center; Tomsk State University
Email: gvzakharova@gmail.com
Россия, Moscow, 119421; Tomsk, 634050
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