Additionally, uniform and Cilengitide clinical trial extremely pure Ag NWs capped with PVP and less than 1 nm in thickness were obtained through the IL synthesis. As shown in Figure 4III, the thickness of the PVP capped on the Ag NW surface was less than 1 nm. The X-ray diffraction (XRD) pattern taken
from the sample prepared in TPA indicates that the crystal structures of these nanowires were face-centered cubic (fcc) (Figure 4III). Figure 4III displays the XRD patterns of the nanowires, and it is seen that all diffraction peaks can be indexed according to the fcc phase of Ag. It is worth noting that the intensity ratio of the reflections at  and  exhibits relatively high values, indicating the preferred  orientation of the Ag NWs. The
longitudinal axis was oriented along the  direction, and all Ag NW diameters were found to be in the narrow range between 28 and 33 nm, as shown in Figure 4I. Figure 4 TEM images of the Ag NWs grown in this investigation. (I) TEM image of the synthesized Ag NWs. The inset of (I) displays the SAED pattern of the Ag NW with a twinned structure. (II) TEM image of the tip of an individual pentagonal Ag NW capped with a PVP layer less than 1 nm thick. (III) XRD pattern selleck kinase inhibitor of the Ag NWs. In contrast, to observe the optical and electrical performances for transparent electrodes, pure Ag NWs synthesized by the abovementioned method were fabricated in the
form of two-dimensional (2-D) films via a casting process. The synthesized Ag NWs with an average length of 50 μm and an average INK1197 molecular weight diameter of 30 nm (Figure 2) dispersed in H2O can be easily blended with a small amount of binder resins with some surfactant. This blended solution was directly deposited or cast on a plasma-treated polyethylene terephthalate (PET) substrate by a wet process coating technique such as a bar and/or spray coater for film formation (a casting film sample is shown in Figure 5). These 2-D film structures consisting of a network of approximately 30-nm-sized Ag NWs as shown in Figure 5 are expected to be sufficiently transparent, owing to the low intensity of scattered Tryptophan synthase light. As a result, we could obtain highly transparent Ag NW networked films with a sheet resistance of 20 Ω/sq and transmittance of 93% (PET film-based) with a low haze value. The morphologies of the resulting randomly dispersed Ag NW networks were examined by SEM and atomic force microscopy (AFM), as shown in Figure 5I. Untangled extremely uniform and orderly NWs were observed. Figure 5 Optical image of the Ag NW film and SEM and AFM surface morphologies. (I) Optical image of the Ag NW film directly cast from the Ag NW solution and (II) SEM and AFM surface morphologies of the resulting randomly dispersed Ag NW network film.