Fabrication of silver nanowires via a β-cyclodextrin-derived soft template

Abstract

Abstract. Supramolecular β-cyclodextrin (β-CD) was used as a soft template for the fabrication of long silver nanowires. A novel design using self-assembled β-CD for the reduction of silver ions was studied. The concentrations of iron chloride, silver nitrate, and the template were controlling factors for the growth of the silver nanowires. Iron chloride was used to accelerate and facilitate the formation of the silver nanowires and inhibit oxidative etching. However, an excessive concentration of Fe +3 resulted in etching of the silver nanostructures. Furthermore, the silver concentration was another controlling factor. The length of the silver nanowires increased as the concentration of silver cations increased. Nevertheless, an excess concentration of silver cations formed various silver crystalline structures. In this study, the optimal ratio between iron chloride and silver nitrate was determined to be 1:13.3. A maximum length of 20 μm was achieved using a concentration of 0.23 M for the soft template. Moreover, the junction of two growing silver nanowires was observed, forming a long fused nanowire, and some significant boundaries were observed. The observed results were further confirmed using scanning electron microscopy (SEM) and transmission electron microscopy (TEM) analyses. X-ray diffraction (XRD) and energy dispersive spectrometer (EDS) analyses were used to indicate the presence of silver and the formation of crystalline materials.

Silver Nanowire Synthesis and Strategies for Fabricating Transparent Conducting Electrodes

“…In addition, the harvesting step of nanowires is not viable for practical application at a large scale. Instead, the availability [60] with permission from Express Polymer Letters, 2018). (c) Schematic diagram of the formation of CPC nanotubes and their aid in AgNW growing via a classical mirror reaction (adapted from [59] with permission from John wiley and sons, 2004).…”

“…(c) Schematic diagram of the formation of CPC nanotubes and their aid in AgNW growing via a classical mirror reaction (adapted from [59] with permission from John wiley and sons, 2004). (d) Illustrating the self-assembled double walled nanotubular J-aggregates dyes with an outer diameter of 13 nm (e) Transmission electron microscopy (TEM) image of a AgNW with a width of 6.4 nm partially filling a [60] with permission from Express Polymer Letters, 2018). (c) Schematic diagram of the formation of CPC nanotubes and their aid in AgNW growing via a classical mirror reaction (adapted from [59] with permission from John wiley and sons, 2004).…”

“…Organogels, which is a 3-D cross-linked matrix composition of liquid organic phase, especially stimuli-responsive gels, have wide variety of effective utilization in targeted drug-delivery systems and biomaterials [ 57 , 58 , 59 ]. Researchers are interested is using these supramolecular gels as soft templates for AgNW synthesis [ 60 , 61 ]. In 2018, β -CD derived soft templates were used for synthesis of AgNWs in the presence of iron chloride (FeCl 3 ) [ 60 ].…”

Wireless Connected Smart Microsystems

“…To show one of the applications in our daily lives, a smart limb-strength promoter system (9) was designed as a demonstration in this case. The system is composed of two devices.…”

Synthesis and Applications of Silver Nanowires for Transparent Conductive Films

“…In past decade, researchers studied high-quality, well-formed and high-yield Ag NWs, and proposed various synthesis methods of Ag NWs, such as ultraviolet (UV) light irradiation [22], polyol method [23], template method [24] and solvent thermal method [25], etc. For the Ag NWs prepared by the template method, their morphologies and aspect ratios can be effectively controlled by the parameters of template.…”