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From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
Published on: March 24, 2018
Enhancing Properties of Anionic Poly(ionic liquid)s with 1,2,3-Triazolium Counter Cations
Mona M Obadia1, Bhanu P Mudraboyina1, Anatoli Serghei1
1Université Claude Bernard Lyon 1, Ingénierie des Matériaux Polymères (UMR CNRS 5223), 15 Boulevard Latarjet, 69622 Villeurbanne Cedex, France.
Abstract:
A series of anionic poly(ionic liquid)s with 1,2,3-triazolium counter cations are prepared by cation exchange between tailormade 1,3,4-trialkylated-1,2,3-triazolium iodides and a polystyrene derivative having pendant potassium bis(trifluoromethylsulfonyl)imide groups. The physical and ion-conducting properties of the resulting materials are compared to the parent potassium-containing polyelectrolyte based on 1H NMR, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and broadband dielectric spectroscopy (BDS) measurements. Substitution of the potassium counter cation by 1,2,3-triazolium charge carriers affords polyelectrolytes with improved processability (broader solubility and removal of the crystalline behavior) as well as a substantial increase in anhydrous ionic conductivity.
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