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Aggregation-based fluorescence amplification strategy: "turn-on" sensing of aminoglycosides using near-IR carbocyanine dyes and pre-micellar surfactantsстатья
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: 13 января 2021 г.
- Авторы: Zakharenkova S.A., Katkova E.A., Doroshenko I.A., Kriveleva A.S., Lebedeva A.N., Vidinchuk T.A., Shik A.V., Abramchuk S.S., Podrugina T.A., Beklemishev M.K.
- Журнал: Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
- Том: 247
- Год издания: 2021
- Издательство: Pergamon Press Ltd.
- Местоположение издательства: United Kingdom
- Первая страница: 119109
- Номер статьи: 119109
- DOI: 10.1016/j.saa.2020.119109
- Аннотация: https://authors.elsevier.com/a/1b-yC_VX6bGCnm (full text до 22.12.2020)This study is aimed at developing sensing schemes without obtaining selective receptors. A series of sim-ple carbocyanine dyes was synthesized, whose emission was quenched in water with formation ofnanoparticles in the range of 20–100 nm. Fluorescence in near-IR region is ‘‘turned on” in the presence of a drug cation of middle molecular weight (400–700 Da) and sodium dodecyl sulfate (SDS), as well as anionic drugs and a cationic surfactant (cetyltrimethylammonium bromide, CTAB). Aggregates (clus-ters) up to 100–200 nm in size were detected using dynamic light scattering (DLS) and Rayleigh light scattering (RLS) techniques in the systems: cationic analyte–SDS, carbocyanine dye–CTAB, and in all brightly fluorescent ternary systemsdye–surfactant–analyte. Small ions (<200 Da) incapable of multi-point binding do not form the aggregates or cause the emission enhancement. The ‘‘turn-on” signal is only observed at the surfactant submicellar concentrations insufficient to solubilize the dye nanoparti-cles. Based on these findings, we suggest a rapid and simple method for the detection of 4·10-5 mol/L of neomycin in urine. The proposed strategy paves the way for developing more selective methods.
- Добавил в систему: Беклемишев Михаил Константинович
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Иллюстрация | Supplementary Info | Supp._Info_Zakharenkova_Spectr_Acta_2020.pdf | 2,0 МБ | 2 ноября 2020 [beklem] |
| 2. | Полный текст | полный текст | Zakharenkova_e.a._Aggregation-based_fluorescent_sensing_usi… | 4,1 МБ | 29 декабря 2022 [beklem] |