Figure 2: Stable ionic liquid microarray immersed in a nonpolar solvent.
From: Robust and versatile ionic liquid microarrays achieved by microcontact printing
(a–c) Reflection micrographs of [BMIM][BF4] on a gold surface when submerged in hexane (scale bar, 100 μm) (a), during evaporation (scale bar, 100 μm) (b) and after the complete evaporation of hexane (scale bar, 100 μm) (c); (d) Fourier transform infrared spectra recorded from a droplet in (c) confirming that the droplet is [BMIM][BF4].
