Ionic liquids-Conventional solvent mixtures, structurally different but dynamically similar

Juan C Araque; Jeevapani J Hettige; Claudio J Margulis

doi:10.1063/1.4932331

Back

Ionic liquids-Conventional solvent mixtures, structurally different but dynamically similar

Journal article

Peer reviewed

Ionic liquids-Conventional solvent mixtures, structurally different but dynamically similar

Juan C Araque, Jeevapani J Hettige and Claudio J Margulis

The Journal of chemical physics, Vol.143(13), pp.134505-134505

10/07/2015

DOI: 10.1063/1.4932331

PMID: 26450321

Files and links (1)

url

https://www.osti.gov/servlets/purl/1469475View

Open Access

Abstract

In more than one way pure ionic liquids (ILs) can be seen as mixtures. By definition they are comprised of cationic and anionic components and they also possess dual charge and apolar characteristics. We recently uncovered interesting dynamical behavior [Araque et al., J. Phys. Chem. B 119(23), 7015 (2015)] that can be ascribed to this duality. For small neutral solutes local friction can be high in certain regions and much lower in others. It is only reasonable to ask whether this interesting behavior is unique to ILs or is also common in certain conventional solvent mixtures such as dimethylsufoxide/glycerol for which the viscosity can be tuned to be similar. We make the case that the latter scenario is correct and that whereas viscous conventional solvent mixtures are structurally very different from ILs, dynamically they are not. From the perspective of a solute that is small, both ILs and viscous conventional solvent mixtures display frictionally stiff and soft regions associated with cage and jump diffusive regimes. In the case of ILs these are associated with charge-enhanced and charge-depleted liquid regions, whereas in the case of the conventional solvents by the distinct frictional properties of the two components.

Viscosity

Solvents - chemistry

Dimethyl Sulfoxide - chemistry

Molecular Structure

Glycerol - chemistry

Ionic Liquids - chemistry

Molecular Dynamics Simulation

Details

Title: Subtitle: Ionic liquids-Conventional solvent mixtures, structurally different but dynamically similar
Creators: Juan C Araque - Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, USA
Jeevapani J Hettige - Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, USA
Claudio J Margulis - Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, USA
Resource Type: Journal article
Publication Details: The Journal of chemical physics, Vol.143(13), pp.134505-134505
DOI: 10.1063/1.4932331
PMID: 26450321
NLM abbreviation: J Chem Phys
ISSN: 0021-9606
eISSN: 1089-7690
Publisher: United States
Grant note: DOI: 10.13039/100000015, name: U.S. Department of Energy, award: DE-SC0008644
Language: English
Date published: 10/07/2015
Academic Unit: Chemistry
Record Identifier: 9983985711202771

Metrics

18 Record Views

40 Times Cited - Web of Science