Superfluorinated Ionic Liquid Crystals Based on Supramolecular, Halogen‐Bonded Anions. Issue 21 (13th April 2016)

• Record Type: Journal Article
• Authors: Cavallo, Gabriella; Terraneo, Giancarlo; Monfredini, Alessandro; Saccone, Marco; Priimagi, Arri; Pilati, Tullio; Resnati, Giuseppe; Metrangolo, Pierangelo; Bruce, Duncan W.
• Is Part Of: Angewandte Chemie international edition. Volume 55:Issue 21(2016)
• Page Start: 6300
• Page End: 6304
• Publication Date: 2016-04-13
• Subjects: fluorophobic effect -- halogen bonding -- ionic liquid crystals -- self-assembly -- supramolecular chemistry; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201601278
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: Unconventional ionic liquid crystals in which the liquid crystallinity is enabled by halogen‐bonded supramolecular anions [C n F2 n +1 ‐I⋅⋅⋅I⋅⋅⋅I‐C n F2 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. Abstract : Out of the ordinary : The high directionality of halogen bonds and the fluorophobic effect were exploited in the design and synthesis of a new family of unconventional superfluorinated ionic liquid crystals. The liquid crystallinity of the system is driven by halogen‐bonded supramolecular anions [C n F2 n +1 ‐I⋅⋅⋅I⋅⋅⋅I‐C n F2 n +1 ] − which act as rigid rod‐like calamitic units.