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Supramolecular control of the structure and receptor properties of an amphiphilic hemicyanine chromoionophore monolayer at the air/water interfaceстатья
Статья опубликована в высокорейтинговом журнале
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: 2 декабря 2020 г.
- Авторы: Shokurov Alexander V., Alexandrova Alvina V., Shcherbina Maxim A., Bakirov Artem V., Rogachev Alexander V., Yakunin Sergey N., Chvalun Sergey N., Arslanov Vladimir V., Selektor Sofiya L.
- Журнал: Soft Matter
- Том: 16
- Номер: 43
- Год издания: 2020
- Издательство: Royal Society of Chemistry
- Местоположение издательства: United Kingdom
- Первая страница: 9857
- Последняя страница: 9863
- DOI: 10.1039/d0sm01078b
- Аннотация: Design of sensors for such toxic compounds as mercury salts in aqueous solutions still remains one of the most pressing tasks of the modern chemical ecology, since many existing systems don't show enough sensitivity and/or response. In this regard, the opportunities offered by supramolecular approaches can be used to improve both these characteristics by creating a new self-organized smart system. Herein, we show that barium cations that according to X-ray standing waves data do not bind directly to the ionophore molecules in the monolayers at the air/water interface could be used to efficiently preorganize such molecules to achieve supramolecular architecture. We demonstrate that such preorganization ensures both low analyte detection threshold and high fluorescent response. We reveal the interrelation of monolayer structure and receptor characteristics of a sensory system and show that such cation-induced preorganization in Langmuir monolayers of a hemicyanine dithia-aza-crown-substituted chromoionophore inhibits formation of non-fluorescent aggregates with low receptor function, and allows quantitative detection of mercury cations using a ratiometric fluorometric approach.
- Добавил в систему: Селектор София Львовна