Two Cu_xI_y-based copper–organic frameworks with multiple secondary building units (SBUs): structure, gas adsorption and impressive ability of I₂ sorption and release

Abstract

Two CuxIy-based copper–organic frameworks with multiple SBUs have been successfully synthesized. Both the compounds exhibit high performance for I2 sorption and release.

Crystal engineering of coordination-polymer-based iodine adsorbents using a π-electron-rich polycarboxylate aryl ether ligand

“…Thus, CPs have attracted increasing attention in the recent years. [25][26][27][28][29][30][31] It was found that the adsorption of I 2 by crystalline porous materials, including CPs, was based on noncovalent interactions like halogen bonding interactions between I 2 and Lewis basic sites [32][33][34][35] or charge-transfer interactions between the electron-poor I 2 and π-electron rich aromatics. [36][37][38][39][40][41] Thus, a combination of halogen bond and CT interactions between the guest I 2 molecules and the host frameworks imparts a comprehensive tuning effect on the iodine capture process.…”

A diamond-like cuprous coordination polymer based on the [Cu8I6]2+ cluster with multistimuli-responsive luminescence and iodine adsorption behavior

“…[24][25][26][27][28][29] Copper(I) iodide-based compounds with organic ligands have drawn the attention of researchers due to their rich luminescence properties with potential technological applications in OLEDs, 30 sensors, 31 and adsorption processes. 32,33 To date, the motifs of various structural conformations of Cu(I) iodide have been reported, for example, the Cu 2 I 2 rhomboid dimer, Cu 4 I 4 cubane or staircase tetramer, and Cu 6 I 6 eared cubane or staircase hexamer. 22,23 Besides, by following the principles of reticular chemistry, Cu x I y can be used as a secondary building unit bridged with organic ligands to construct diverse coordination networks.…”

“…22,23 Besides, by following the principles of reticular chemistry, Cu x I y can be used as a secondary building unit bridged with organic ligands to construct diverse coordination networks. 33,34 Copper(I) iodide-based compounds can also display multistimuli-responsive properties, which make them appeal to access original multifunctional materials. The most popular copper iodide cluster is the cubane compound formulated as [Cu 4 I 4 L 4 ] (L: organic ligand), which exhibits both mechanochromic and thermochromic luminescence properties.…”

“…The [Cu 8 I 6 ] 2+ cluster with a dodecahedron configuration was first reported in 2012; it is worth noting that the luminescence properties of the [Cu 8 I 6 ] 2+ cluster have been rarely reported in recent years. 32,33,40,41 Surprisingly, complex 1 exhibits both thermochromic and mechanochromic luminescence properties with multiple emissions. The emission colors of 1 change from light-cyan to cyan-yellow with a temperature from 77 to 297 K, which may be related to the 3 (X/M)LCT and 3 CC transition.…”

Highly effective selectively removal of carcinogenic dyes and iodine adsorption and release via a metal–organic framework based on multiple helical chains

“…Iodine is one of the essential trace elements in human body, which can promote human growth and maintain the normal structure of the central nervous system. [14,15] However, the volatile radioactive iodine produced by nuclear fission (i.e., iodine isotopes 129 I and 131 I, with half-lives of 10 7 years and 8.02 days, respectively) is a highly mobile gas, which is easily absorbed by the human body and concentrated in the thyroid gland, seriously threatening human life and health. [16][17][18][19] Physical, chemical, and biological techniques have been extensively studied to treat pollutants in the past few years.…”