Enhanced Ionic Conductivity of a 1,2,3-Triazolium-Based Poly(siloxane ionic liquid) Homopolymer

Antoine Jourdain; Anatoli Serghei; Eric Drockenmuller

doi:10.1021/acsmacrolett.6b00761

Enhanced Ionic Conductivity of a 1,2,3-Triazolium-Based Poly(siloxane ionic liquid) Homopolymer

ACS Macro Lett. 2016 Nov 15;5(11):1283-1286. doi: 10.1021/acsmacrolett.6b00761. Epub 2016 Nov 2.

Authors

Antoine Jourdain¹, Anatoli Serghei¹, Eric Drockenmuller¹

Affiliation

¹ Univ Lyon, Université Lyon 1, CNRS, Ingénierie des Matériaux Polymères, UMR 5223, F-69003, Lyon, France.

PMID: 35614741
DOI: 10.1021/acsmacrolett.6b00761

Abstract

A 1,2,3-triazolium-based poly(siloxane ionic liquid) (PSIL) is synthesized by UV-triggered thiol-ene ligation between a poly[(mercaptopropyl)methylsiloxane] and a tailor-made vinyl-functionalized triethylene glycol-based 1,2,3-triazolium ionic liquid. The quantitative nature of the thiol-ene coupling is demonstrated by ¹H and ¹³C NMR, whereas properties of this new PSIL are discussed based on solubility, size exclusion chromatography, differential scanning calorimetry, thermogravimetric analysis, and broadband dielectric spectroscopy measurements. Besides exhibiting low glass transition temperature (T_g = -62 °C) and high thermal stability (T_d10 = 284 °C), this new class of poly(1,2,3-triazolium) demonstrates the highest value of bulk anhydrous ionic conductivity reported to date for PILs (σ_DC = 7 × 10^-5 S cm^-1 at 30 °C).