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Self-assembly of cucurbiturils and cyclodextrins to supramolecular millstones with naphthalene derivatives capable of translocations in the host cavitiesстатья
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: 11 апреля 2019 г.
- Авторы: Vedernikov A.I., Lobova N.A., Kuz’mina L.G., Fomina M.V., Strelenko Y.A., Howard J.A.K, Gromov S.P.
- Журнал: New Journal of Chemistry
- Том: 43
- Номер: 9
- Год издания: 2019
- Издательство: Royal Society of Chemistry
- Местоположение издательства: United Kingdom
- Первая страница: 3673
- Последняя страница: 3689
- DOI: 10.1039/c8nj04685a
- Аннотация: Quaternary 4-(2-naphthyl)pyridinium salts with various N-substituents were synthesized. The structure of these salts was determined by X-ray crystallography. The self-assembly of the salts with cavitand molecules – b- and g-cyclodextrins and cucurbit[7,8]urils – in aqueous solutions was studied by electronic spectroscopy and 1H NMR spectroscopy, including spectrophotometric, fluorescence, and 1H NMR titrations. The formation of inclusion complexes of different stoichiometry and stability, was observed, depending on the structure of N-substituent in the quaternary salt and the cavitand nature and cavity size. The complex formation with cucurbiturils results in considerable changes in the absorption and fluorescence spectra of naphthylpyridine derivatives. Motion of the guest molecules in the cavitand cavities was detected. The X-ray diffraction study was carried out for two polymorphs of 2 : 1 complexes formed by betaine type naphthylpyridine and cucurbit[8]uril, in which the cavitand was located either above the naphthalene residues of a dimeric pair of guest molecules or above the centers of their conjugated moieties.
- Добавил в систему: Громов Сергей Пантелеймонович