Radical Ionic Liquid: An Efficient Self-Probe to Study Heterogeneous Structure in Glassy State Using EPR Spectroscopy | Sciact - CRIS-system of Boreskov Institute of Catalysis

Radical Ionic Liquid: An Efficient Self-Probe to Study Heterogeneous Structure in Glassy State Using EPR Spectroscopy Full article

Journal

Journal of Molecular Liquids
ISSN: 0167-7322 , E-ISSN: 1873-3166

Output data

Year: 2023, Volume: 381, Article number : 121830, Pages count : 7 DOI: 10.1016/j.molliq.2023.121830

Tags

EPR; Ionic liquids; Nanostructuring; Spin probes; Glasses

Authors

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

Affiliations

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

Funding (1)

Russian Science Foundation

19-13-00071

Ionic liquids (ILs) exhibit a number of unique properties, including formation of various heterogeneities in their liquid and glassy states. Electron Paramagnetic Resonance (EPR) spectroscopy has proven informative in studies of such heterogeneous nanostructures; however it employs additional small paramagnetic molecules – spin probes – dissolved in ILs as reporters. In this work we synthesized two radical-ILs, which include integrated paramagnetic fragments in their structures, and employed them in continuous wave (CW) and pulse EPR studies of structural peculiarities in IL glasses. In this approach no external-to-IL spin probe is required. We have shown that the trends observed with radical-ILs are similar to those obtained previously using external-to-IL spin probes. In particular, unusual structural anomalies near glass transition temperatures, which were previously found using external-to-IL spin probes, have been now observed using radical-ILs, thus confirming their genuine origin. In general, radical-ILs can be considered as efficient tools to study heterogeneous structure of ILs using EPR.

Ivanov M.Y. , Bakulina O.D. , Polienko Y.F. , Kirilyuk I.A. , Prikhod’ko S.A. , Adonin N.Y. , Fedin M.V.
Radical Ionic Liquid: An Efficient Self-Probe to Study Heterogeneous Structure in Glassy State Using EPR Spectroscopy
Journal of Molecular Liquids. 2023. V.381. 121830 :1-7. DOI: 10.1016/j.molliq.2023.121830 WOS Scopus РИНЦ AN OpenAlex

Submitted:	Feb 20, 2023
Accepted:	Apr 7, 2023
Published online:	Apr 9, 2023
Published print:	Jul 1, 2023

Web of science:	WOS:000988141800001
Scopus:	2-s2.0-85152452356
Elibrary:	54068317
Chemical Abstracts:	2023:794057
OpenAlex:	W4362720268

DB	Citing
Scopus	2
Web of science	2
OpenAlex	2