Cationic and dicationic 1, 2, 3-triazolium-based poly(ethylene glycol ionic liquid)s. Issue 5 (6th January 2017)

• Record Type: Journal Article
• Authors: Obadia, Mona M.; Jourdain, Antoine; Serghei, Anatoli; Ikeda, Taichi; Drockenmuller, Eric
• Is Part Of: Polymer chemistry. Volume 8:Issue 5(2017)
• Page Start: 910
• Page End: 917
• Publication Date: 2017-01-06
• Subjects: Polymers -- Periodicals; Macromolecules -- Periodicals; Polymerization -- Periodicals; 547.705
• DOI: 10.1039/c6py02030e
• Languages: English
• ISSNs: 1759-9954

Abstract

Abstract : We report the synthesis and in-depth characterization of two novel poly(ionic liquid)s having poly(ethylene glycol) main chains and side chains having either one or two 1, 2, 3-triazolium cations with triethylene glycol spacers and bis(trifluoromethylsulfonyl)imide counter anion(s). Abstract : We report the synthesis of two novel poly(ionic liquid)s having poly(ethylene glycol) main chains and side chains having either one or two 1, 2, 3-triazolium cations with triethylene glycol spacers and bis(trifluoromethylsulfonyl)imide counter anion(s). Both ion conducting polymers are obtained by post-polymerization sequential modifications, i.e. copper-catalyzed azide–alkyne cycloaddition and N -alkylation of the 1, 2, 3-triazole group(s), starting from a common poly(ethylene glycol) (PEG) having azidomethyl side groups. The structures of the obtained polymers are supported by 1 H NMR spectroscopy and size exclusion chromatography (SEC). The impact of the number of 1, 2, 3-triazolium groups and the structure of the spacer are discussed based on solubility, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and broadband dielectric spectroscopy (BDS) measurements. The dicationic derivative has a lower glass transition temperature ( T g = −27 °C) as well as higher thermal stability ( T d10 = 369 °C) and ionic conductivity ( σ DC ∼ 10 −5 S cm −1 at 30 °C under anhydrous conditions) than the monocationic analogue.