Abstract
In this work, two fluorinated poly(1,2,3-triazolium ionic liquid)s (PTILs) are accessed in two steps by copper(I)-catalyzed azide–alkyne cycloaddition AA + BB polyaddition between an α,ω-dialkyne-perfluoroether and either 1,12-dodecyl-diazide or α,ω-diazido-tetra(ethylene glycol), followed by N-alkylation of the resulting poly(1,2,3-triazole)s (PTs) by N-methyl bis(trifluoromethylsulfonyl)imide. The structure/properties correlations of PTILs and their PT intermediates are discussed based on solubility, 1H, 13C and 19F NMR spectroscopy, differential scanning calorimetry, thermogravimetric analysis, and broadband dielectric spectroscopy. Dodecyl- and tetra(ethylene glycol)-based PTILs exhibit glass transition temperatures of − 38 and − 29 °C, temperatures at 10% weight loss of ca. 340 °C and anhydrous ionic conductivities at 30 °C of 1.2 × 10−5 and 8.4 × 10−6 S cm−1, respectively. The impact of different lithium salts (i.e. LiSO3CF3, LiTFSI, and LiClO4,) on ionic conductivity of the tetra(ethylene glycol)-based PTIL was also investigated. A ca. twofold increase in ionic conductivity could be obtained by the addition of 5 wt% of LiClO4.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call