Anisotropic Ion Mobility in an Ionic Liquid Crystal Complex of a Rodlike Mesogen Containing an Oxyethylene Moiety and Lithium Triflate
(English)Manuscript (preprint) (Other academic)
A liquid-crystalline (LC) complex of a rodlike mesogen containing an oxyethylene moiety and lithium triflate has been synthesized and its mesophases have been characterized by differential scanning calorimetry (DSC), wide-angle X-ray diffraction (WAXD) and polarized optical microscopy (POM). The ion conductive behaviour was investigated in isotropic and LC phases and related to the ionic mobility, as observed by 7Li and 19F NMR diffusometry. The observed two-dimensional ion mobilities show that planes conducting both lithium and triflate ions are formed in the smectic mesophases. The conductivity of the lithium ions is large in the smectic C phase where conductive planes rich in ethylene oxide chains exist.
IdentifiersURN: urn:nbn:se:kth:diva-30473OAI: oai:DiVA.org:kth-30473DiVA: diva2:400364
QC 201102252011-02-252011-02-252014-09-24Bibliographically approved