Fluorosulfonyl-(trifluoromethanesulfonyl)imide ionic liquids with enhanced asymmetry

Literature Information

Publication Date 2012-12-12
DOI 10.1039/C2CP43066E
Impact Factor 3.676
Authors

Jakub Reiter, Sebastian Jeremias, Elie Paillard, Martin Winter, Stefano Passerini


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Abstract

New ionic liquids with an asymmetric anion, fluorosulfonyl-(trifluoromethanesulfonyl)imide (FTFSI), were prepared and their chemical–physical properties were investigated. The ionic liquids based on N-methyl-N-propylpyrrolidinium, PYR13, N-butyl-N-methylpyrrolidinium, PYR14, and N-methoxyethyl-N-methylpyrrolidinium, PYR12O1, exhibit high electrochemical stability (>5.5 V on platinum) and thermal stability (>250 °C in N2 and >200 °C in O2). Due to the highly asymmetric anion, the prepared ionic liquids do not crystallize down to −150 °C while maintaining ionic conductivity above 10−4 S cm−1 even at −40 °C. Conductivity and viscosity values at 20 °C are in the range 3.5–5.0 mS cm−1 and 30–60 mPa s respectively. PFG-NMR measurements showed high self-diffusion coefficients of cations and the anion.

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Contents list

Front/Back Matter

DOI: 10.1039/C3PY90032K

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Source Journal

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
Articles per Year: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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