ABSORPTION AND LUMINESCENT PROPERTIES OF COVALENTLY LINKED BIS-THIACARBOCYANINES IN THE PRESNCE OF СUCURBIT[7,8]URILS IN WATER

Мұқаба

Дәйексөз келтіру

Толық мәтін

Ашық рұқсат Ашық рұқсат
Рұқсат жабық Рұқсат берілді
Рұқсат жабық Тек жазылушылар үшін

Аннотация

The effect of cucurbit[7,8]urils on absorption and luminescent properties of bis-thiacarbocyanine (bis-TCC) based on 3,3'-dimethylthiacarbocyanine perchlorate (TCC) has been studied in water. The existence of two forms of bis-TCC which absorb in the long-wavelength and short-wavelength regions of the spectrum has been established. The properties of the form absorbing in the long-wavelength region are similar to that of the monomer of TCC (monomeric form), whereas the form which absorbs in the short-wavelength region exhibits the properties of a non-fluorescent dimer of TCC (dimeric form). The influence of cucurbit[7,8]urils manifests itself in shifts of the band maxima in the absorption and fluorescence spectra as well as in increase in the fluorescence intensity of the monomeric and dimeric forms, and also in the presence of thermally activated delayed fluorescence of the dimeric form in deoxygenated solutions at room temperature. Results obtained from the spectral and luminescent properties indicate the ability of bis-TCC to form complexes with cucurbit[7,8]urils.

Авторлар туралы

T. Fedotova

Photochemistry Centre of “Federal Scientific Research Centre “Cristalografy and Photonics” of Russian Academy of Science”; Moscow Institute of Physics and Technology

Email: gvzakharova@gmail.com
Russian, 119421, Moscow; Russian, 141701, Dolgoprudny

G. Zakharova

Photochemistry Centre of “Federal Scientific Research Centre “Cristalografy and Photonics” of Russian Academy of Science”

Хат алмасуға жауапты Автор.
Email: gvzakharova@gmail.com
Russian, 119421, Moscow

A. Chibisov

Photochemistry Centre of “Federal Scientific Research Centre “Cristalografy and Photonics” of Russian Academy of Science”; Moscow Institute of Physics and Technology

Email: gvzakharova@gmail.com
Russian, 119421, Moscow; Russian, 141701, Dolgoprudny

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© Т.В. Федотова, Г.В. Захарова, А.К. Чибисов, 2023