Electrical conductivity and glass formation in nitrile-functionalized pyrrolidinium bis(trifluoromethylsulfonyl)imide ionic liquids: chain length and odd–even effects of the alkyl spacer between the pyrrolidinium ring and the nitrile group

Jan Leys*, Chandra Shekhar Pati Tripathi, Christ Glorieux, Stefan Zahn, Barbara Kirchner, Stephane Longuemart, Kallidanthiyil Chellappan Lethesh, Peter Nockemann, Wim Dehaen, Koen Binnemans

*Corresponding author for this work

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The electrical conductivity of a series of pyrrolidinium bis(trifluoromethylsulfonyl)imide ionic liquids, functionalized with a nitrile (cyano) group at the end of an alkyl chain attached to the cation, was studied in the temperature range between 173 K and 393 K. The glass formation of the ionic liquids is influenced by the length of the alkyl spacer separating the nitrile function from the pyrrolidinium ring. The electrical conductivity and the viscosity do not show a monotonic dependence on the alkyl spacer length, but rather an odd-even effect. An explanation for this behavior is given, including the potential energy landscape picture for the glass transition.
Original languageEnglish
Pages (from-to)10548-10557
Number of pages10
JournalPhysical Chemistry Chemical Physics
Volume16
Issue number22
Early online date24 Mar 2014
DOIs
Publication statusPublished - 14 Jun 2014

Fingerprint Dive into the research topics of 'Electrical conductivity and glass formation in nitrile-functionalized pyrrolidinium bis(trifluoromethylsulfonyl)imide ionic liquids: chain length and odd–even effects of the alkyl spacer between the pyrrolidinium ring and the nitrile group'. Together they form a unique fingerprint.

  • Cite this