Ionic liquid crystals: hexafluorophosphate salts

Gordon, C.M. and Holbrey, J.D. and Kennedy, A.R. and Seddon, K.R. (1998) Ionic liquid crystals: hexafluorophosphate salts. Journal of Materials Chemistry, 8 (12). pp. 2627-2636. ISSN 0959-9428 (http://dx.doi.org/10.1039/a806169f)

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Abstract

A series of novel hexafluorophosphate salts, based on N,N¾-dialkylimidazolium and substituted N-alkylpyridinium cations, display liquid crystalline behaviour at temperatures above their melting point. The temperature range over which liquid crystalline behaviour is observed increases markedly with increasing alkyl chain length. Alkyl substitution at the 3- and 4-positions on the pyridinium ring results in a decrease in the melting point compared with the equivalent unsubstituted salt, but also leads to a large decrease in the tendency towards liquid crystalline behaviour (or mesogenicity). The salts prepared are fully characterised using a wide variety of techniques, including NMR and IR spectroscopy, DSC, and single crystal X-ray diffraction in the case of 1-dodecyl-3-methylimidazolium hexafluorophosphate. The effect of preparing mixtures containing different proportions of two cations is also reported.

ORCID iDs

Gordon, C.M., Holbrey, J.D., Kennedy, A.R. ORCID logoORCID: https://orcid.org/0000-0003-3652-6015 and Seddon, K.R.;
  • Item type:Article
    ID code:1303
    Dates:
    Date
    Event
    1998
    Published
    Subjects:Science > Chemistry
    Department:Faculty of Science > Pure and Applied Chemistry
    Depositing user:Users 45 not found.
    Date deposited:26 Jun 2006
    Last modified:11 Nov 2024 08:13
    URI:https://strathprints.strath.ac.uk/id/eprint/1303
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