Details

Autor(en) / Beteiligte

• Abdelhedi-Miladi, Imen
• Obadia, Mona M.
• Allaoua, Imène
• Serghei, Anatoli
• Romdhane, Hatem Ben
• Drockenmuller, Eric

Titel

1,2,3-Triazolium-Based Poly(ionic liquid)s Obtained Through Click Chemistry Polyaddition

Ist Teil von

• Macromolecular chemistry and physics, 2014-11, Vol.215 (22), p.2229-2236

Ort / Verlag

Weinheim: Blackwell Publishing Ltd

Erscheinungsjahr

2014

Quelle

Wiley Online Library

Beschreibungen/Notizen

• A series of four 1,2,3‐triazolium‐based poly(ionic liquid)s (TPILs) is synthesized from the polyaddition of different tailor‐made α‐azide‐ω‐alkyne monomers by copper(I)‐catalyzed azide–alkyne cycloaddition (CuAAC), followed by quaternization with methyl iodide and subsequent anion exchange with lithium bis(trifluoromethylsulfonyl)imide. Whereas the chemical structures of the bis(trifluoromethylsulfonyl)imide counter anion and the N‐3 methyl group are common to all TPILs, the structural features of the repeating units, i.e., triethylene glycol or undecanoyl spacers with either ester or ether linkages, are varied and compared. Their impact on the physical and ion‐conducting properties of the obtained TPILs is established based on 1H NMR, DSC, thermogravimetric analysis (TGA), and broadband di­electric spectroscopy (BDS) characterization techniques. Most importantly, the replacement of an ether by an ester group at the C‐4 position of the 1,2,3‐triazolium ring significantly decreases the thermal stability and ionic conductivity of TPILs, whereas the chemical nature of the triethylene glycol or undec­anoyl spacers has little influence on the materials properties. A series of 1,2,3‐triazolium‐based poly(ionic liquid)s is synthesized by CuAAC poly­addition of α‐azide‐ω‐alkynes followed by quaternization of the 1,2,3‐triazole groups with methyl iodide and anion exchange with lithium bis(trifluoromethylsulfonyl)imide. The effect of the monomer structural features, i.e., triethylene glycol or undecanoyl spacers with ester or ether linkages, on the material's physical and ion‐conducting properties is discussed based on 1H NMR, DSC, thermogravimetric analysis (TGA), and broadband dielectric spectroscopy (BDS) experiments.