A Wide Bandgap Semiconducting Magnesium Hydrogel: Moisture Harvest, Iodine Sequestration, and Resistive Switching

Abstract

Water harvesting from the ubiquitous moisture is pivotal for delivering fresh water to earth's arid/semiarid regions, and sequestration of iodine from the solution is crucial for environmental safety due to its severe effect on human metabolic processes. In this context, herein, a multifunctional supramolecular metallohydrogel (Mg@TAEA) is synthesized through direct mixing of magnesium nitrate hexahydrate and the low molecular weight gelator tris(2-aminoethyl)amine. Electron microscopy reveals that Mg@TAEA is sculptured in vertically grown welloriented micrometer-sized flakes. The porous crystalline material (52 m 2 /g) was found to be an efficacious host matrix for water harvesting from moisture (847 mg/ g). Mg@TAEA shows effective (513 mg/g) iodine sequestration from solution and adsorption of carbon dioxide (15 mg/g). The wide bandgap semiconducting Mg@ TAEA (3.6 eV) material is a potential candidate for building memory devices, and the I on /I off ratio of the device based on the indium tin oxide (ITO)/Mg@TAEA/Ag heterostructure was found to be ∼62. We further extended our work by analyzing the charge transport properties of the system and found space charge limited conduction (SCLC) and trap-filled SCLC to be responsible for the nonlinear transport behavior observed in the device.

Effect of long chain fatty acids on the memory switching behavior of tetraindolyl derivatives

“…Several conduction mechanisms and techniques, including as space charge limited conduction (SCLC), oxidationreduction, ohmic behaviour electron tunneling, hopping and trapping-detrapping have been found in general. [83][84][85][86][87][88][89] In order to understand the conduction mechanism further, we have plotted the I-V curve in log-log scale. Corresponding curve is shown in Fig.…”

Metal–organic gels and their derived materials for electrochemical applications

“…MgTAEA MOG was produced by the direct mixing of Mg 2+ and tris(2-aminoethyl)amine in water. 123 The hydrogel showed a flower-like structure composed of vertically growing slices of ca. 20–22 nm thickness.…”

Suberic Acid-Based Supramolecular Metallogels of Ni(II), Zn(II), and Cd(II) for Anti-Pathogenic Activity and Semiconducting Diode Fabrication

“…The selection of metallogel-forming components is one of the significant considerations that triggers the metallogelation process and also offers a system with advanced potential functionality . In this context, research reports on metallogels with prospective applications in diverse areas comprising catalysis, − sensing, − magnetic, electronic device fabrication, − drug delivery system, non-linear optics, antibacterial activity, etc., are well recognized. Numerous solvents including water, , DMF, DMSO, etc., are well known in the metallogelation process.…”