Multilayer Coatings Based On Citrate-Stabilized Gold Nanoparticles and Polydiallyldimethylammonium Chloride for the Electrophoretic Separation of Carboxylic Acids
- Авторлар: Makeeva D.1, Antipova K.1, Solovyeva E.1, Morgacheva V.1, Kolobova E.1, Kartsova L.1
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Мекемелер:
- St. Petersburg State University
- Шығарылым: Том 78, № 3 (2023)
- Беттер: 241-252
- Бөлім: ОРИГИНАЛЬНЫЕ СТАТЬИ
- ##submission.dateSubmitted##: 14.10.2023
- URL: https://journals.rcsi.science/0044-4502/article/view/136008
- DOI: https://doi.org/10.31857/S0044450223030088
- EDN: https://elibrary.ru/FUQJKK
- ID: 136008
Дәйексөз келтіру
Аннотация
The conditions for the formation of physically adsorbed three-layer coatings of quartz capillary walls in capillary electrophoresis (CE) with successively deposited oppositely charged layers of polydiallyldimethylammonium chloride (PDADMAC) modifiers and citrate-stabilized gold nanoparticles (GNPs) are proposed. It was shown that three-layer PDADMAC–GNP–PDADMAC coatings favorably differ from monolayer coatings with PDADMAC by greater stability in a wide range of pH (2–10). The formed coatings were characterized by scanning electron microscopy, and the presence of a uniform dense layer of nanoparticles on the capillary surface was confirmed. The applicability of the modified capillaries under CE conditions was demonstrated by the separation of a mixture of 16 carboxylic acids. An increase in the separation selectivity achieved with the use of three-layer coatings based on GNPs was explained by the reversible exchange of citrate anions on the GNP surface with negatively charged analytes in the course of electrophoretic analysis.
Негізгі сөздер
Авторлар туралы
D. Makeeva
St. Petersburg State University
Email: dasha.dzema@gmail.com
199034, St. Petersburg, Russia
K. Antipova
St. Petersburg State University
Email: dasha.dzema@gmail.com
199034, St. Petersburg, Russia
E. Solovyeva
St. Petersburg State University
Email: dasha.dzema@gmail.com
199034, St. Petersburg, Russia
V. Morgacheva
St. Petersburg State University
Email: dasha.dzema@gmail.com
199034, St. Petersburg, Russia
E. Kolobova
St. Petersburg State University
Email: dasha.dzema@gmail.com
199034, St. Petersburg, Russia
L. Kartsova
St. Petersburg State University
Хат алмасуға жауапты Автор.
Email: dasha.dzema@gmail.com
199034, St. Petersburg, Russia
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