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Guest-host interactions between crown-containing 2-styrylbenzothiazole and HP-beta-CDстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Fedorov Y.V., Fedorova O.A., Andryukhina E.N., Gromov S.P., Alfimov M.V., Aaron J.J.
- Журнал: JOURNAL OF INCLUSION PHENOMENA AND MACROCYCLIC CHEMISTRY
- Том: 49
- Номер: 3-4
- Год издания: 2004
- Первая страница: 283
- Последняя страница: 289
- DOI: 10.1023/B:JIPH.0000048316.04426.f6
- Аннотация: The inclusion complexes of the trans-isomer of 2-[2-(6,7,9,10,12,13,15,16-octahydro-5,8,11,14,17-pentaoxabenzocyclopentadecen-2-yl)- vinyl]- benzothiazole (CSB) with 2-hydroxypropyl-beta-cyclodextrin (HP-beta-CD) were investigated by electronic absorption and fluorescence spectroscopies in aqueous solution. The addition of HP-beta-CD has very little effect on the absorption spectra of CSB. A 17-nm blue shift and pronounced fluorescence enhancements in the emission spectrum of CSB were observed. 1: 1 and 1: 2 stoichiometries were found for complexes of CSB with HP-beta-CD, and formation constants of the complexes and other thermodynamic parameters were estimated from fluorescence measurements. In the case of the 1: 1 CSB: HP-beta-CD complex, the formation constant was equal to 3,802 at 293 K, the complexation reaction was exothermic (DeltaH(0) = - 9.2 +/- 1.1 kJ mol(-1)) and presented a positive entropy value (DeltaS(0) = 37.3 +/- 3.8 J mol(-1) K-1). A molecular structure was proposed for the CSB: HP-beta-CD inclusion complex.
- Добавил в систему: Громов Сергей Пантелеймонович