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Issue 8, 2011
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Amphiphilicity determines nanostructure in protic ionic liquids

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Abstract

The bulk structure of the two oldest ionic liquids (ILs), ethylammonium nitrate (EAN) and ethanolammonium nitrate (EtAN), is elucidated using neutron diffraction. The spectra were modelled using empirical potential structure refinement (EPSR). The results demonstrate that EAN exhibits a long-range structure of solvophobic origin, similar to a bicontinuous microemulsion or disordered L3-sponge phase, but with a domain size of only 1 nm. The alcohol (–OH) moiety in EtAN interferes with solvophobic association between cation alkyl chains resulting in small clusters of ions, rather than an extended network.

Graphical abstract: Amphiphilicity determines nanostructure in protic ionic liquids

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Publication details

The article was received on 09 Jul 2010, accepted on 04 Nov 2010 and first published on 06 Dec 2010


Article type: Paper
DOI: 10.1039/C0CP01137A
Citation: Phys. Chem. Chem. Phys., 2011,13, 3237-3247
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    Amphiphilicity determines nanostructure in protic ionic liquids

    R. Hayes, S. Imberti, G. G. Warr and R. Atkin, Phys. Chem. Chem. Phys., 2011, 13, 3237
    DOI: 10.1039/C0CP01137A

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