A Noncovalent π-Stacked Dual-Pore Molecular Crystal for Ethanol/Water and Benzene/Methanol Azeotrope Separation

被引：2
作者：
Meng, Xiang [1 ]
Zou, Shuixiang [1 ]
Li, Jiawei [1 ]
Chen, Cheng [1 ,2 ]
Zhang, Jie [3 ]
Wu, Mingyan [1 ,2 ]
机构：
[1] Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350002, Peoples R China
[2] Fujian Sci & Technol Innovat Lab Optoelect Informa, Fuzhou 350108, Peoples R China
[3] Sch Chem & Chem Engn, Beijing Inst Technol, MOE Key Lab Cluster Sci, Beijing Key Lab Photoelect Electrophoton Convers M, Beijing 102488, Peoples R China
来源：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2025年 / 64卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Dual-Pore Molecular Crystal; Noncovalent pi-interaction; Selective Adsorbent; Azeotrope Separation; COVALENT ORGANIC FRAMEWORKS; PURIFICATION; ADSORPTION; STORAGE; ROTORS; MOF;
D O I：
10.1002/anie.202415346
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Separation of ethanol/water or benzene/methanol azeotrope mixtures presents significant challenges, not only due to the limitations of conventional distillation techniques but also because of the constraints in developing and utilizing of new generation adsorbents. Porous organic molecular frameworks constructed via noncovalent pi-interactions are emerging as novel adsorbents with vast potential in gas adsorption and molecular separation. Herein, we report a permanent two-dimensional porous structure, namely TDTBA-1, which consists of two different kinds of pores through pi-stacking of a single organic molecule with highly Td symmetry. Activated TDTBA-1 exhibits excellent hydrophobicity, thermal stability, recoverability and high selectivity for ethanol over water, and benzene over methanol. Therefore, activated TDTBA-1 can be used as an efficient stationary phase for the separation of ethanol/water and benzene/methanol azeotropes by high-resolution gas chromatography.
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页数：6
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