Validation of Structural Grounds for Anomalous Molecular Mobility in Ionic Liquid Glasses Full article
| Journal |
Molecules
ISSN: 1420-3049 |
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| Output data | Year: 2021, Volume: 26, Number: 19, Article number : 5828, Pages count : 10 DOI: 10.3390/molecules26195828 | ||||
| Tags | ionic liquids; glasses; molecular mobility; spin probe; deuteration effect; nanostructure | ||||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Russian Science Foundation | 19-13-00071 |
Abstract:
Ionic liquid (IL) glasses have recently drawn much interest as unusual media with unique physicochemical properties. In particular, anomalous suppression of molecular mobility in imidazolium IL glasses vs. increasing temperature was evidenced by pulse Electron Paramagnetic Resonance (EPR) spectroscopy. Although such behavior has been proven to originate from dynamics of alkyl chains of IL cations, the role of electron spin relaxation induced by surrounding protons still remains unclear. In this work we synthesized two deuterated imidazolium-based ILs to reduce electron–nuclear couplings between radical probe and alkyl chains of IL, and investigated molecular mobility in these glasses. The obtained trends were found closely similar for deuterated and protonated analogs, thus excluding the relaxation-induced artifacts and reliably demonstrating structural grounds of the observed anomalies in heterogeneous IL glasses.
Cite:
Ivanov M.Y.
, Prikhod’ko S.A.
, Bakulina O.D.
, Kiryutin A.S.
, Adonin N.Y.
, Fedin M.V.
Validation of Structural Grounds for Anomalous Molecular Mobility in Ionic Liquid Glasses
Molecules. 2021. V.26. N19. 5828 :1-10. DOI: 10.3390/molecules26195828 WOS Scopus РИНЦ AN PMID OpenAlex
Validation of Structural Grounds for Anomalous Molecular Mobility in Ionic Liquid Glasses
Molecules. 2021. V.26. N19. 5828 :1-10. DOI: 10.3390/molecules26195828 WOS Scopus РИНЦ AN PMID OpenAlex
Dates:
| Submitted: | Aug 18, 2021 |
| Accepted: | Sep 23, 2021 |
| Published online: | Sep 26, 2021 |
| Published print: | Oct 1, 2021 |
Identifiers:
| Web of science: | WOS:000760296600001 |
| Scopus: | 2-s2.0-85115861541 |
| Elibrary: | 47079392 |
| Chemical Abstracts: | 2021:2346515 |
| PMID: | 34641371 |
| OpenAlex: | W3202750823 |