Xie Linhuang, Zheng Zhiye, Lin Qiuyuan, Zhou Huan, Ji Xiaofan, Sessler Jonathan L, Wang Hongyu
Department of Chemistry, College of Science, Center for Supramolecular Chemistry & Catalysis, Shanghai University, 99 Shangda Road, Shanghai, 200444, P. R. China.
School of Chemistry and Chemical Engineering, Key Laboratory of Materials Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Materials Chemistry and Service Failure, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China.
Angew Chem Int Ed Engl. 2022 Jan 3;61(1):e202113724. doi: 10.1002/anie.202113724. Epub 2021 Nov 23.
A series of calix[4]pyrrole-based crosslinked polymer networks designed for iodine capture is reported. These materials were prepared by Sonogashira coupling of α,α,α,α-tetra(4-alkynylphenyl)calix[4]pyrrole with bishalide building blocks with different electronic properties and molecular sizes. Despite their low Brunauer-Emmett-Teller surface areas, iodine vapor adsorption capacities of up to 3.38 g g were seen, a finding ascribed to the presence of a large number of effective sorption sites including macrocyclic π-rich cavities, aryl units, and alkyne groups within the material. One particular system, C[4]P-BTP, was found to be highly effective at iodine capture from water (uptake capacity of 3.24 g g from a concentrated aqueous KI/I solution at ambient temperature). Fast capture kinetics (k =7.814 g g min ) were seen. Flow-through adsorption experiments revealed that C[4]P-BTP is able to remove 93.2 % of iodine from an aqueous source phase at a flow rate of 1 mL min .
报道了一系列用于碘捕获的基于杯[4]吡咯的交联聚合物网络。这些材料是通过α,α,α,α-四(4-炔基苯基)杯[4]吡咯与具有不同电子性质和分子尺寸的双卤化物结构单元进行Sonogashira偶联制备的。尽管它们的 Brunauer-Emmett-Teller 表面积较低，但碘蒸气吸附容量高达 3.38 g g，这一发现归因于材料中存在大量有效的吸附位点，包括富含大环π的空腔、芳基单元和炔基。发现一种特定的体系 C[4]P-BTP 在从水中捕获碘方面非常有效（在环境温度下从浓 KI/I 水溶液中的摄取容量为 3.24 g g）。观察到快速的捕获动力学（k = 7.814 g g min）。流通吸附实验表明，C[4]P-BTP 能够以 1 mL min 的流速从水相源中去除 93.2%的碘。
