Construction of Cu(I)-Organic Frameworks with Effective Sorption Behavior for Iodine and Congo Red

Abstract

The assembly of a tetradentate pyridine-derived ligand with CuX has afforded two isostructural Cu­(I)-organic frameworks [Cu2X2(TBD)·DMF] n (X = Cl for 1 and Br for 2) in this work. Structural analysis indicates that the compounds feature hybrid layered architectures, and the three-dimensional supramolecular frameworks are finally fabricated through the alternative stacking of adjacent layers wherein large open channels are simultaneously constructed. The chemical stability has been studied showing the excellent skeleton maintenance of the prepared solids in various solvents and even in water. Moreover, the iodine and dye sorption performance for compound 1 has been further tested. The Cu­(I)-based metal–organic framework exhibits outstanding sorption and separation abilities on the targeted species, which could be considered as a promising adsorbent with high efficiency and selectivity.

Water-Stable Cd(II)-Based Metal–Organic Framework: Antibiotic Detection and Photochromism Behavior

“…Thus, developing low-cost, convenient, and rapid-responding technologies for the effective recognition of corresponding species is of high urgency. Metal–organic frameworks (MOFs), built from the coordinative linkage of multifunctional organic ligands and inorganic nodes (metal ions or clusters), have received great attention owing to their structural and functional tunability over the years. − Luminescent MOFs, usually equipped with interesting optical behaviors, are actively pursued due to their wide applications in display devices, light-emitting diodes, sensing, and bioimaging. − Notably, with the merits of good optical absorption and electron transport, these organic–inorganic hybrids could be ideal candidates of fluorescence sensing materials, which feature fast response, great effectivity, high sensitivity, and selectivity performance. − The bimetallic Eu 1– x Tb x -MOF-based membranes, for example, was fabricated by Zhao et al, which can serve as the self-calibrating luminescent sensor to detect different antibiotics . Generally speaking, the quest for MOF-based luminescent probes for various analytes is of great interest at the current stage.…”

Coordination-Driven Heterochiral Self-Assembly: Construction of Cd(II) Coordination Polymers with Sorption Behaviors for Iodine and Dyes

“…The rational design and synthesis of multidimensional extended frameworks has been an interesting area of chemistry because the structures of their coordination networks can profoundly influence the final physical and chemical properties. − Over the past decade, a considerable number of metal–organic frameworks (MOFs) have been synthesized and applied in various fields, such as catalysis, − sensing, − gas adsorption and separation, − drug delivery carriers, and water purification . Many key factors have a significant impact on the various structural topologies formed during the synthetic process used to obtain ideal MOFs, among which the type of organic linker used can be considered to be the most important. − In particular, nitrogen donor ligands, especially pyridyl derivatives, are generally used for the construction of promising MOFs due to their advantages, including satisfactory coordination geometry and functionality. , Organic ligands containing bispyridine have been intensively studied due to their excellent ability to generate stable MOFs with different dimensions. , Besides, counteranions can also directly affect the structures by coordinating with the metal ions or by acting as templates to induce the self-assembly process. , Therefore, making full use of different counteranions may result in significant structural changes in the coordination polymeric materials.…”

Assembly of One-, Two-, and Three-Dimensional Cu(I)-Based Coordination Frameworks for Tunable White Light Emission and Effective Fluorescence Sensing

“…Especially, Cu­(I) halide complexes, wherein the halide-to-ligand or metal-to-ligand charge transfer, or cluster-centered excited state may occur, could bring a promising platform for the preparation of excellent optical materials. − By altering the ratio of luminescent Cu-X-based compounds and a suitable phosphor, tunable light and even white light emission could be readily realized. In addition, the yellow-emissive Cu­(I) halide-based compounds could show great competitiveness in contaminant monitoring with the advantages of inexpensiveness, quick response, and high selectivity, which could be an effective chemosensor for the sensing of heavy metal ions, toxic anions, as well as organic pollutants. − For instance, our group has constructed a Cu 2 I 2 -based CP showing bright yellow light emission and can be further used as a promising sensor for Ag + . Therefore, the pursuit of novel related luminous materials for analyte detection is important and urgent.…”