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The structure and dynamics of the ionic liquid (IL) 1-ethyl-3-methylimidazolium acetate (EMIMAc) with small amounts of water in nanoporous glass are measured and compared to the bulk liquid. With X-ray diffraction the domain structure was determined, while neutron spin echo spectroscopy/neutron backscattering were employed to measure the dynamics. The experimental challenge is to separate coherent and incoherent contributions of elastic and inelastic scattering, resulting in a rather complex set of information from the different instruments. Differences in ordering in the bulk and in confinement could be observed, which also has an influence on the ionic mobility of the IL. Partial deuteration allowed to get insight into the mobility of the smaller molecule of the IL, and the influence of small amounts of water has been studied [1].
[1] H. Frielinghaus et al., (2022), Front. Phys. 10:872616. doi: 10.3389/fphy.2022.872616
