Liquid Structure and Transport Properties of the Deep Eutectic Solvent Ethaline

Yong Zhang, Derrick Poe, Luke Heroux, Henry Squire, Brian W. Doherty, Zhuoran Long, Mark Dadmun, Burcu Gurkan, Mark E. Tuckerman, Edward J. Maginn

Research output: Contribution to journalArticlepeer-review

Abstract

A range of techniques including physical property measurements, neutron scattering experiments, ab initio molecular dynamics, and classical molecular dynamics simulations are used to probe the structural, thermodynamic, and transport properties of a deep eutectic solvent comprised of a 1:2 molar ratio of choline chloride and ethylene glycol. This mixture, known as Ethaline, has many desirable properties for use in a range of applications, and therefore, understanding its liquid structure and transport properties is of interest. Simulation results are able to capture experimental densities, diffusivities, viscosities, and structure factors extremely well. The solvation environment is dynamic and dominated by different hydrogen bonding interactions. Dynamic heterogeneities resulting from hydrogen bonding interactions are quantified. Rotational dynamics of molecular dipole moments of choline and ethylene glycol are computed and found to exhibit a fast and slow mode.

Original languageEnglish (US)
Pages (from-to)5251-5264
Number of pages14
JournalJournal of Physical Chemistry B
Volume124
Issue number25
DOIs
StatePublished - Jun 25 2020

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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