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Entropy 2017, 19(4), 140; doi:10.3390/e19040140

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

1
Laboratoire Léon Brillouin, CEA-CNRS, CEA Saclay, 91191 Gif-sur-Yvette Cedex, France
2
Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai 400 085, India
3
Institut des Matériaux Jean Rouxel (IMN), Université de Nantes-CNRS, 2 Rue de la Houssinère BP 32229, 44322 Nantes Cedex 3, France
4
Laboratoire des Interfaces Complexes et de l’Organisation Nanométrique, ECE-Paris Ecole d’Ingénieurs, 37 Quai de Grenelle, 75015 Paris, France
*
Author to whom correspondence should be addressed.
Academic Editors: Giancarlo Franzese, Ivan Latella and Miguel Rubi
Received: 31 January 2017 / Revised: 17 March 2017 / Accepted: 20 March 2017 / Published: 24 March 2017
(This article belongs to the Special Issue Nonequilibrium Phenomena in Confined Systems)
View Full-Text   |   Download PDF [3265 KB, uploaded 24 March 2017]   |  

Abstract

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. View Full-Text
Keywords: ionic liquid; confinement; quasi-elastic neutron scattering; phase transition; mobility ionic liquid; confinement; quasi-elastic neutron scattering; phase transition; mobility
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Mitra, S.; Cerclier, C.; Berrod, Q.; Ferdeghini, F.; de Oliveira-Silva, R.; Judeinstein, P.; le Bideau, J.; Zanotti, J.-M. Ionic Liquids Confined in Silica Ionogels: Structural, Thermal, and Dynamical Behaviors. Entropy 2017, 19, 140.

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