On the scaling behavior of electric conductivity in [C(4)mim][NTf2]

Z. Wojnarowska*, G. Jarosz, A. Grzybowski, J. Pionteck, J. Jacquemin, M. Paluch

*Corresponding author for this work

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

In this work we examine, for the first time, the molar conductivity behavior of the deeply supercooled room temperature ionic liquid [C4mim][NTf2] in the temperature, pressure and volume thermodynamic space in terms of density scaling (TVγ)−1 combined with the equation of state (EOS). The exponent γσ determined from the Avramov model analysis is compared with the coefficient obtained from the viscosity studies carried out at moderate temperatures. Therefore, the experimental results presented herein provide the answer to the long-standing question regarding the validity of thermodynamic scaling of ionic liquids over a wide temperature range, i.e. from the normal liquid state to the glass transition point. Finally, we investigate the relationship between the dynamic and thermodynamic properties of [C4mim][NTf2] represented by scaling exponent γ and Grüneisen constant γG, respectively.

Original languageEnglish
Pages (from-to)20444-20450
Number of pages7
JournalPhysical Chemistry Chemical Physics
Volume16
Issue number38
Early online date12 Aug 2014
DOIs
Publication statusPublished - 2014

Keywords

  • IONIC LIQUIDS
  • PRESSURE-DEPENDENCE
  • SUPERCOOLED LIQUIDS
  • GLASS-TRANSITION
  • TEMPERATURE
  • DYNAMICS
  • VISCOSITY
  • 1-BUTYL-3-METHYLIMIDAZOLIUM
  • RELAXATION
  • DENSITY

Cite this