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. 2015 Apr 2;6:6713. doi: 10.1038/ncomms7713

Figure 2. Synthesis and microscopic analysis of multi-layer N1.

Figure 2

(a) Schematic illustration and photographs of the liquid/liquid interfacial synthesis and multi-layer N1 transferred onto an ITO substrate. Scale bars, 5 and 1 mm, respectively. (b) Optical microscopic image on an ITO substrate. Scale bar, 50 μm. (c) Field-emission scanning electron microscopic (FE-SEM) image on HMDS/Si(111). Scale bar, 20 μm. (d) Atomic force microscopic image on HMDS/Si(111) and its cross-section analysis along the magenta line. Scale bar, 5 μm. (e) Control of the thickness based on the concentration of L1 in the liquid/liquid interfacial synthesis. The inset shows a close-up of the low concentration region. Reaction time, 4 days. Temperature, room temperature. Container, cylindrical glass vial with a diameter of 3.2 cm. Volume of the upper (aqueous) layer, 20 ml. Volume of the lower (dichloromethane) layer, 10 ml. Concentration of zinc(II) acetate in the upper layer, 0.05 mol l−1. (f,g) Photographs of the products of single-phase reactions in dichloromethane at room temperature and in N,N-dimethylformamide at 105 °C, respectively.