Do Ionic Liquids Slow Down in Stages?

Bichitra Borah; Gobin Raj Acharya; Diana Grajeda; Matthew S. Emerson; Matthew A. Harris; A. M Milinda Abeykoon; Joshua Sangoro; Gary A. Baker; Andrew J. Nieuwkoop; Claudio J. Margulis

doi:10.1021/jacs.3c08639

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Do Ionic Liquids Slow Down in Stages?

Bichitra Borah, Gobin Raj Acharya, Diana Grajeda, Matthew S. Emerson, Matthew A. Harris, A. M Milinda Abeykoon, Joshua Sangoro, Gary A. Baker, Andrew J. Nieuwkoop and Claudio J. Margulis

Journal of the American Chemical Society, Vol.145(47), pp.25518-25522

11/29/2023

DOI: 10.1021/jacs.3c08639

PMCID: PMC10691361

PMID: 37963184

Appears in UI Libraries Support Open Access

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Abstract

High impact recent articles have reported on the existence of a liquid–liquid (L–L) phase transition as a function of both pressure and temperature in ionic liquids (ILs) containing the popular trihexyltetradecylphosphonium cation (P666,14+), sometimes referred to as the “universal liquifier”. The work presented here reports on the structural-dynamic pathway from liquid to glass of the most well-studied IL comprising the P666,14+ cation. We present experimental and computational evidence that, on cooling, the path from the room-temperature liquid to the glass state is one of separate structural-dynamic changes. The first stage involves the slowdown of the charge network, while the apolar subcomponent is fully mobile. A second, separate stage entails the slowdown of the apolar domain. Whereas it is possible that these processes may be related to the liquid–liquid and glass transitions, more research is needed to establish this conclusively.

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Details

Title: Subtitle: Do Ionic Liquids Slow Down in Stages?
Creators: Bichitra Borah - University of Iowa
Gobin Raj Acharya - Rutgers, The State University of New Jersey
Diana Grajeda - Rutgers, The State University of New Jersey
Matthew S. Emerson - University of Iowa
Matthew A. Harris - University of Tennessee at Knoxville
A. M Milinda Abeykoon - National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, United States
Joshua Sangoro - University of Tennessee at Knoxville
Gary A. Baker - University of Missouri
Andrew J. Nieuwkoop - Rutgers, The State University of New Jersey
Claudio J. Margulis - University of Iowa
Resource Type: Journal article
Publication Details: Journal of the American Chemical Society, Vol.145(47), pp.25518-25522
DOI: 10.1021/jacs.3c08639
PMID: 37963184
PMCID: PMC10691361
NLM abbreviation: J Am Chem Soc
ISSN: 0002-7863
eISSN: 1520-5126
Publisher: American Chemical Society
Grant note: DOI: 10.13039/100000165, name: Division of Chemistry, award: CHE-1753282, CHE-1954373, CHE-1954358
Language: English
Electronic publication date: 11/14/2023
Date published: 11/29/2023
Academic Unit: Chemistry
Record Identifier: 9984511955802771

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