Temperature dependence of the electrical conductivity of imidazolium ionic liquids

J. Leys, M. Wubbenhorst, C.P. Menon, R. Rajesh, J. Thoen, C. Glorieux, Peter Nockemann, B. Thijs, K. Binnemans, S. Longuemart

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144 Citations (Scopus)

Abstract

The electrical conductivities of 1-alkyl-3-methylimidazolium tetrafluoroborate ionic liquids and of 1-hexyl-3-methylimidazolium ionic liquids with different anions were determined in the temperature range between 123 and 393 K on the basis of dielectric measurements in the frequency range from 1 to 10(7) Hz. Most of the ionic liquids form a glass and the conductivity values obey the Vogel-Fulcher-Tammann equation. The glass transition temperatures are increasing with increasing length of the alkyl chain. The fragility is weakly dependent on the alkyl chain length but is highly sensitive to the structure of the anion. (c) 2008 American Institute of Physics.
Original languageEnglish
Article number064509
Pages (from-to)1-7
Number of pages7
JournalJournal of Chemical Physics
Volume128
Issue number6
DOIs
Publication statusPublished - 2008

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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