Geminiarene: Molecular Scale Dual Selectivity for Chlorobenzene and Chlorocyclohexane Fractionation
Geminiarene: Molecular Scale Dual Selectivity for Chlorobenzene and Chlorocyclohexane Fractionation
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Geminiarene：氯苯和氯环己烷分馏的分子尺度双重选择性
DOI：
10.1021/jacs.9b03559
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发表时间：
2019
影响因子：
15
通讯作者：
Yang Ying-Wei
中科院分区：
文献类型：
--
作者：
Wu Jia-Rui;Yang Ying-Wei
本文设计并合成了一种新型的大环芳烃，即双芳烃，用于客体络合和氯苯/氯环己烷混合物的分离，具有优异的双选择性。由于其独特的双/双构象特征，氯环己烷不仅可以从纯度超过97%的氯苯中分离出来，氯苯也可以从纯度超过88%的氯环己烷中分离出来，并且只需一个循环操作即可实现双选择分馏过程。值得注意的是，我们证明了双选择性能力本质上是双芳烃无客体和负载客体晶体相之间稳定性的竞争。我们坚信，这项工作和多选择性分离系统的想法将为基于大环的固态主客体化学和分子尺度分离材料开辟新的前景。
In this work, a new version of macrocyclic arenes, namely geminiarene, has been designed and synthesized for guest complexation and chlorobenzene/chlorocyclohexane mixture separation with excellent dual selectivity. Due to its unique dual/gemini conformational feature, not only chlorocyclohexane can be separated from chlorobenzene with exceeding 97% purity but also chlorobenzene can be separated from chlorocyclohexane with purity over 88%, and the dual selective fractionation process could be achieved in only one cycle of operation. Significantly, we demonstrate that the dual selectivity capability is essentially a competition of the stability between the guest-free and guest-loaded crystalline phases of geminiarene. We strongly believe that this work and the idea of multiple selective separation systems will open up new perspectives on macrocycle-based solid-state host–guest chemistry and molecular scale separation materials.