Superfluorinated ionic liquid crystals based on supramolecular, halogen-bonded anions
Gabriella Cavalloa, Giancarlo Terraneoa, Alessandro Monfredinia, Marco Sacconeb, Arri Priimagib, Tullio Pilatia, Giuseppe Resnatia, Pierangelo Metrangoloa,c, Duncan W. Bruced
a NFMLab, Department of Chemistry, Materials, and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Milan, Italy b Department of Chemistry and Bioengineering, Tampere University of Technology, FI, Tampere, Finland c VTT-Technical Research Centre of Finland, Espoo, Finland d Department of Chemistry, University of York, Heslington, York, UK
Unconventional ionic liquid crystals in which the liquid crystallinity is enabled by halogen-bonded supramolecular anions [CnF2 n+1-I⋅⋅⋅I⋅⋅⋅I-CnF2 n+1]− are reported. The material system is unique in many ways, demonstrating for the first time 1) ionic, halogen-bonded liquid crystals, and 2) imidazolium-based ionic liquid crystals in which the occurrence of liquid crystallinity is not driven by the alkyl chains of the cation.
