Inside Back Cover: The Effect of Water upon Deep Eutectic Solvent Nanostructure: An Unusual Transition from Ionic Mixture to Aqueous Solution (Angew. Chem. Int. Ed. 33/2017)

Is hydration the solution to the viscosity of deep eutectic solvents (DESs)? In their Communication on page 9782 ff., K. J. Edler and co-workers determine the nanostructure of DES/water mixtures over a wide hydration range by neutron diffraction and atomistic modeling. The mixture retains the characteristics of the DES structure up to remarkably high water levels and is then converted into a state that is best described as a simple aqueous solution of the DES molecular components.