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From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
Published on: March 24, 2018
Solution and thermal behaviour of novel dicationic imidazolium ionic liquids
Francesca D'Anna1, H Q Nimal Gunaratne, Giuseppe Lazzara
1Dipartimento STEBICEF, Università degli Studi di Palermo, Viale delle Scienze-Parco d'Orleans II, 90128 Palermo, Italy. francesca.danna@unipa.it renato.noto@unipa.it.
Organic & Biomolecular Chemistry
|August 1, 2013
Summary
Novel dicationic ionic liquids with imidazole groups were synthesized and characterized. The anion
Area of Science:
- Materials Science
- Organic Chemistry
- Physical Chemistry
Background:
- Ionic liquids (ILs) are salts that are liquid at ambient temperatures.
- Dicationic ionic liquids (DILs) possess two cationic centers, offering unique properties.
- Functionalized ILs with specific chemical groups can exhibit tailored characteristics.
Purpose of the Study:
- To synthesize and characterize a new class of functionalized dicationic ionic liquids.
- To investigate the influence of different anions on the properties of these novel ILs.
- To explore the structural and thermal behavior of these dicationic compounds.
Main Methods:
- Synthesis of dicationic ionic liquids with imidazole functionalities.
- Characterization using proton and 2D-Nuclear Magnetic Resonance (NMR) spectroscopy.
- Thermal stability analysis via Differential Scanning Calorimetry (DSC) and Thermogravimetric Analysis (TGA).
Main Results:
- Successful synthesis of novel dicationic ionic liquids featuring a central benzene ring with imidazole-capped cationic units.
- The nature of both mono- and di-anions significantly impacts the solution conformation distribution.
- Anion choice demonstrably affects the thermal stability of the synthesized ionic liquids.
Conclusions:
- The synthesized dicationic ionic liquids represent a new class of functional materials.
- Anion selection is a critical factor in tuning the conformational behavior and thermal properties of these ILs.
- These findings provide insights into the structure-property relationships of functionalized dicationic ionic liquids.
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