Microscopic structural and dynamic features in triphilic room temperature ionic liquids

Fabrizio Lo Celso, Giovanni B. Appetecchi, Elisabetta Simonetti, Man Zhao, Edward J. Castner, Uwe Keiderling, Lorenzo Gontrani, Alessandro Triolo, Olga Russina

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Here we report a thorough investigation of the microscopic and mesoscopic structural organization in a series of triphilic fluorinated room temperature ionic liquids, namely [1-alkyl,3-methylimidazolium][(trifluoromethanesulfonyl)(nonafluorobutylsulfonyl)imide], with alkyl=ethyl, butyl, octyl ([Cnmim][IM14], n=2, 4, 8), based on the synergic exploitation of X-ray and Neutron Scattering and Molecular Dynamics simulations. This study reveals the strong complementarity between X-ray/neutron scattering in detecting the complex segregated morphology in these systems at mesoscopic spatial scales. Use of MD simulations delivering very good agreement with experimental data allows gaining a robust understanding of the segregated morphology. The structural scenario is completed with determination of dynamic properties accessing the diffusive behaviour and a relaxation map is provided for [C2mim][IM14] and [C8mim][IM14], highlighting their natures as fragile glass formers.

Original languageEnglish
Article number285
JournalFrontiers in Chemistry
Volume7
Issue numberAPR
DOIs
Publication statusPublished - Jan 1 2019

Keywords

  • Fluorous tail
  • Ionic Liquid
  • Molecular dynamics (MD)
  • Neutron scattering
  • Triphilic

ASJC Scopus subject areas

  • Chemistry(all)

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  • Cite this

    Lo Celso, F., Appetecchi, G. B., Simonetti, E., Zhao, M., Castner, E. J., Keiderling, U., Gontrani, L., Triolo, A., & Russina, O. (2019). Microscopic structural and dynamic features in triphilic room temperature ionic liquids. Frontiers in Chemistry, 7(APR), [285]. https://doi.org/10.3389/fchem.2019.00285