Peek Inside the Water Mixtures of Ionic Liquids at Molecular Level: Microscopic Properties Probed by EPR Spectroscopy | Sciact - CRIS-система Института катализа

Peek Inside the Water Mixtures of Ionic Liquids at Molecular Level: Microscopic Properties Probed by EPR Spectroscopy Научная публикация

Журнал

International Journal of Molecular Sciences
ISSN: 1422-0067 , E-ISSN: 1661-6596

Вых. Данные

Год: 2021, Том: 22, Номер: 21, Номер статьи : 11900, Страниц : 9 DOI: 10.3390/ijms222111900

Ключевые слова

ionic liquids; EPR spectroscopy; nanostructure; emulsions; green chemistry

Авторы

Ivanov Mikhail Yu. ¹ , Polienko Yuliya F. ² , Kirilyuk Igor A. ² , Prikhod’ko Sergey A. ³ , Adonin Nicolay Yu. ³ , Fedin Matvey V. ^1,4

Организации

1	International Tomography Center SB RAS, Institutskaya Street 3a, 630090 Novosibirsk, Russia
2	N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS, Lavrentiev Avenue 9, 630090 Novosibirsk, Russia
3	Boreskov Institute of Catalysis SB RAS, Lavrentiev Avenue 5, 630090 Novosibirsk, Russia
4	Novosibirsk State University, Pirogova Street 2, 630090 Novosibirsk, Russia

Информация о финансировании (1)

Российский научный фонд

19-13-00071

Many ionic liquids (ILs) can be mixed with water, forming either true solutions or emulsions. This favors their applications in many respects, but at the same time might strongly alter their physicochemical properties. A number of methods exist for studying the macroscopic properties of such mixtures, whereas understanding their characteristics at micro/nanoscale is rather challenging. In this work we investigate microscopic properties, such as viscosity and local structuring, in binary water mixtures of IL [Bmim]BF4 in liquid and glassy states. For this sake, we use continuous wave and pulse electron paramagnetic resonance (EPR) spectroscopy with dedicated spin probes, located preferably in IL-rich domains or distributed in IL- and water-rich domains. We demonstrate that the glassy-state nanostructuring of IL-rich domains is very similar to that in neat ILs. At the same time, in liquid state the residual water makes local viscosity in IL-rich domains noticeably different compared to neat ILs, even though the overwhelming amount of water is contained in water-rich domains. These results have to be taken into account in various applications of IL-water mixtures, especially in those cases demanding the combinations of optimum micro- and macroscopic characteristics.

Ivanov M.Y. , Polienko Y.F. , Kirilyuk I.A. , Prikhod’ko S.A. , Adonin N.Y. , Fedin M.V.
Peek Inside the Water Mixtures of Ionic Liquids at Molecular Level: Microscopic Properties Probed by EPR Spectroscopy
International Journal of Molecular Sciences. 2021. V.22. N21. 11900 :1-9. DOI: 10.3390/ijms222111900 WOS Scopus РИНЦ CAPlusCA PMID OpenAlex

Поступила в редакцию:	12 окт. 2021 г.
Принята к публикации:	29 окт. 2021 г.
Опубликована в печати:	2 нояб. 2021 г.
Опубликована online:	2 нояб. 2021 г.

Web of science:	WOS:000721530100001
Scopus:	2-s2.0-85118251100
РИНЦ:	47519102
Chemical Abstracts:	2021:2516468
Chemical Abstracts (print):	177:125043
PMID (PubMed):	34769336
OpenAlex:	W3208287408

БД	Цитирований
Scopus	7
Web of science	7
РИНЦ	7
OpenAlex	7