State Key Laboratory of Materials Processing and Die & Mold Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
Department of Chemistry, College of Science, and Center for Supramolecular Chemistry & Catalysis, Shanghai. University, Shanghai 200444, China.
J Am Chem Soc. 2022 Sep 21;144(37):16755-16760. doi: 10.1021/jacs.2c08327. Epub 2022 Sep 9.
The toxicity, corrosiveness, and volatility of elemental bromine presents challenges for its safe storage and transportation. Purification from other halogens is also difficult. Here, we report an easy-to-prepare calix[4]pyrrole-based azo-bridged porous organic polymer () that supports efficient bromine capture. was found to capture bromine as a vapor and from a cyclohexane source phase with maximum uptake capacities of 3.6 and 3.4 g·g, respectively. Flow-through adsorption experiments revealed that removes 80% of the bromine from a 4.0 mM cyclohexane solution at a flow rate of 45 mL·h. also allowed the selective capture of bromine from a 1:1 mixture of bromine and iodine in cyclohexane.
元素溴的毒性、腐蚀性和挥发性使其在安全储存和运输方面面临挑战。从其他卤素中进行提纯也很困难。在这里，我们报告了一种易于制备的基于杯[4]吡咯的偶氮桥联多孔有机聚合物（），它可以有效地捕获溴。发现可以作为蒸汽和环己烷源相捕获溴，最大吸附容量分别为 3.6 和 3.4 g·g。流动吸附实验表明，在 45 mL·h 的流速下，从 4.0 mM 的环己烷溶液中去除了 80%的溴。还可以从环己烷中溴和碘的 1:1 混合物中选择性地捕获溴。
