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Issue 8, 2010
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Blending ionic liquids: how physico-chemical properties change

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Ionic liquids offer the opportunity of tailoring their properties by changing the chemical structure of the cation and anion. Blending of two or more liquids adds a further dimension to this “chemical space”. Here we present the results of a study of three binary and one ternary mixture of the ionic liquids formed by the N-butyl-N-methylpyrrolidinium cation with bis(trifluoromethanesulfonyl) imide, bis(pentafluoroethanesulfonyl) imide and (trifluoromethanesulfonyl)(nonafluorobutanesulfonyl) imide. We have collected viscosity and NMR-based data on ionߝxion correlations (NOE) and diffusion (DOSY). We also attempt to establish a quantitative correlation between mixture and the corresponding pure liquid properties. We find that the binary mixture containing the two very different anions has an intriguing and somewhat anomalous behaviour.

Graphical abstract: Blending ionic liquids: how physico-chemical properties change

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Publication details

The article was received on 20 Oct 2009, accepted on 17 Dec 2009 and first published on 18 Jan 2010

Article type: Paper
DOI: 10.1039/B921816E
Phys. Chem. Chem. Phys., 2010,12, 1784-1792

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    Blending ionic liquids: how physico-chemical properties change

    F. Castiglione, G. Raos, G. Battista Appetecchi, M. Montanino, S. Passerini, M. Moreno, A. Famulari and A. Mele, Phys. Chem. Chem. Phys., 2010, 12, 1784
    DOI: 10.1039/B921816E

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