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Title: Nanoscale organization in the fluorinated room temperature ionic liquid: Tetraethyl ammonium (trifluoromethanesulfonyl)(nonafluorobutylsulfonyl)imide

Journal Article · · Journal of Chemical Physics
DOI:https://doi.org/10.1063/1.5016236· OSTI ID:1608893
ORCiD logo [1];  [2];  [3]; ORCiD logo [4];  [5]; ORCiD logo [6];  [4]
  1. Viale delle Scienze, Palermo (Italy); Consiglio Nazionale delle Ricerche, (ISM-CNR) Rome (Italy)
  2. ENEA, Rome (Italy)
  3. Helmholtz-Zentrum f¨ur Materialien und Energie GmbH, Berlin, (Germany)
  4. Univ. of Rome Sapienza (Italy)
  5. Univ. de Lisboa, Lisbon (Portugal)
  6. Consiglio Nazionale delle Ricerche, (ISM-CNR) Rome (Italy)

Fluorinated Room Temperature Ionic Liquids (FRTILs) are a branch of ionic liquids that is the object of growing interest for a wide range of potential applications, due to the synergic combination of specifically ionic features and those properties that stem from fluorous tails. So far limited experimental work exists on the micro- and mesoscopic structural organization in this class of compounds. Such a work is however necessary to fully understand morphological details at atomistic level that would have strong implications in terms of bulk properties. In this work, we use the synergy between X-ray and neutron scattering together with molecular dynamics simulations to access structural details of a technologically relevant FRTIL that is characterised by an anion bearing a long enough fluorinated tail to develop specific morphological features. In particular, we find the first experimental evidence that in FRTILs bearing an asymmetric bis(perfluoroalkyl)sulfonyl-imide anion, fluorous side chains tend to be spatially segregated into nm-scale spatial heterogeneities. This feature together with the well-established micro-segregation of side alkyl chains in conventional RTILs leads to the concept of triphilic ILs, whose technological applications are yet to be fully developed.e

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1608893
Alternate ID(s):
OSTI ID: 1419824
Journal Information:
Journal of Chemical Physics, Vol. 148, Issue 19; ISSN 0021-9606
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
ENGLISH
Citation Metrics:
Cited by: 16 works
Citation information provided by
Web of Science

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Cited By (4)

Microscopic Structural and Dynamic Features in Triphilic Room Temperature Ionic Liquids journal May 2019
Atomic Force Spectroscopy on Ionic Liquids journal May 2019
Preface: Special Topic on Chemical Physics of Ionic Liquids journal May 2018
Structural features of selected protic ionic liquids based on a super-strong base journal January 2019