Communication: Unusual structure and transport in ionic liquid-hexane mixtures

Liang, Min; Khatun, Sufia; Castner, Edward W.

doi:10.1063/1.4916388

Title: Communication: Unusual structure and transport in ionic liquid-hexane mixtures

Journal Article · Sat Mar 28 00:00:00 EDT 2015 · Journal of Chemical Physics

DOI:https://doi.org/10.1063/1.4916388· OSTI ID:1173217

Liang, Min ^[1]; Khatun, Sufia ^[1]; Castner, Edward W. ^[1]

Rutgers Univ., Piscataway, NJ (United States). Dept. of Chemistry and Chemical Biology

Ionic liquids having a sufficiently amphiphilic cation can dissolve large volume fractions of alkanes, leading to mixtures with intriguing properties on molecular length scales. The trihexyl(tetradecyl)phosphonium cation paired with the bis(trifluoromethylsulfonyl)amide anion provides an ionic liquid that can dissolve large mole fractions of hexane. We present experimental results on mixtures of n-C₆D₁₄ with this ionic liquid. High- energy X-ray scattering studies reveal a persistence of the characteristic features of ionic liquid structure even for 80% dilution with n-C₆D₁₄. NMR self-diffusion results reveal decidedly non-hydrodynamic behavior where the self-diffusion of the neutral, non-polar n-C₆D₁₄ is on average a factor of 21 times faster than for the cation. Exploitation of the unique structural and transport properties of these mixtures may lead to new opportunities for designer solvents for enhanced chemical reactivity and interface science.

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Research Organization:: Rutgers Univ., Piscataway, NJ (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC0001780

OSTI ID:: 1173217

Alternate ID(s):: OSTI ID: 1228581

Journal Information:: Journal of Chemical Physics, Vol. 142, Issue 12; ISSN 0021-9606

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 28 works

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Microstructures and Dynamics of Tetraalkylphosphonium Chloride Ionic Liquids Wang, Yong-Lei; Li, Bin; Sarman, Sten arXiv https://doi.org/10.48550/arxiv.1709.00818	text	January 2017
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Solvent controlled intramolecular electron transfer in mixtures of 1-butyl-3-methylimidizolium tetrafluoroborate and acetonitrile Rumble, Christopher A.; Maroncelli, Mark The Journal of Chemical Physics, Vol. 148, Issue 19 https://doi.org/10.1063/1.5000727	journal	May 2018
Solvation structures of water in trihexyltetradecylphosphonium-orthoborate ionic liquids Wang, Yong-Lei; Sarman, Sten; Kloo, Lars The Journal of Chemical Physics, Vol. 145, Issue 6 https://doi.org/10.1063/1.4960506	journal	August 2016
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Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
X-ray
self-diffusion
ionic-liquid
hexane