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Crown-containing styryl dyes .19. Complexation and cation-induced aggregation of chromogenic aza-15-crown-5-ethersстатья
Информация о цитировании статьи получена из
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Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Ushakov E.N., Gromov S.P., Fedorova O.A., Alfimov M.V.
- Журнал: Russian Chemical Bulletin
- Том: 46
- Номер: 3
- Год издания: 1997
- Издательство: Springer Nature
- Местоположение издательства: Switzerland
- Первая страница: 463
- Последняя страница: 471
- DOI: 10.1007/BF02495396
- Аннотация: Complexation of styryl dyes containing the N-phenylaza-15-crown-5 fragment (trans-2a,b) with Ca2+ ions in MeCN was studied. Unlike cationic dye trans-2a, betaine trans-2b forms both complexes of 1:1 stoichiometry and aggregates consisting of four dye molecules and one Ca2+ ion. Cation-induced aggregation was observed also for the analog of dye trans-2b, which contains a dimethylamino group instead of an azacrown ether fragment (trans-3). Apparently, the interaction between a metal cation and sulfo groups of molecules trans-2b or trans-3 makes the main contribution to the stability of aggregates. The dependence of the stability of aggregates on the nature of the metal cation was studied.
- Добавил в систему: Громов Сергей Пантелеймонович