Entropy (Mar 2017)

Ionic Liquids Confined in Silica Ionogels: Structural, Thermal, and Dynamical Behaviors

  • Subhankur Mitra,
  • Carole Cerclier,
  • Quentin Berrod,
  • Filippo Ferdeghini,
  • Rodrigo de Oliveira-Silva,
  • Patrick Judeinstein,
  • Jean le Bideau,
  • Jean-Marc Zanotti

DOI
https://doi.org/10.3390/e19040140
Journal volume & issue
Vol. 19, no. 4
p. 140

Abstract

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Ionogels are porous monoliths providing nanometer-scale confinement of an ionic liquid within an oxide network. Various dynamic parameters and the detailed nature of phase transitions were investigated by using a neutron scattering technique, giving smaller time and space scales compared to earlier results from other techniques. By investigating the nature of the hydrogen mean square displacement (local mobility), qualitative information on diffusion and different phase transitions were obtained. The results presented herein show similar short-time molecular dynamics between pristine ionic liquids and confined ionic liquids through residence time and diffusion coefficient values, thus, explaining in depth the good ionic conductivity of ionogels.

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