Triptycene-based Chiral Porous Polyimides for Enantioselective Membrane Separation.
Triptycene-based Chiral Porous Polyimides for Enantioselective Membrane Separation.
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DOI：
10.1002/anie.202102350
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发表时间：
2021-04
影响因子：
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通讯作者：
Qing-pu Zhang;Zhen Wang;Zhe‐Wen Zhang;Tian‐Long Zhai;Jing‐Jing Chen;Hui Ma;B. Tan;Chun Zhang
中科院分区：
文献类型：
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作者：
Qing-pu Zhang;Zhen Wang;Zhe‐Wen Zhang;Tian‐Long Zhai;Jing‐Jing Chen;Hui Ma;B. Tan;Chun Zhang
采用手性HPLC拆分了2，6-二氨基三蝶烯的两对映体（R，R - 1和S，S - 1），并利用单晶X-射线衍射技术确定了它们的绝对构型。以该对映体为单体，通过缩聚反应制备了一对手性多孔聚酰亚胺（R-FTPI和S-FTPI），它们具有良好的热稳定性、高比表面积和良好的有机溶剂溶解性。此外，R-FTPI和S-FTPI都可以浇铸成坚固的自支撑膜，适用于具有对称手性选择性的对映体选择性分离。
A couple of enantiomers of 2, 6-diaminotriptycene ( R, R - 1 and S, S - 1 ) are split by chiral HPLC and their absolute configurations are identified by single-crystal X-ray diffraction technology. Using the enantiomers as monomers, a couple of chiral porous polyimides ( R - FTPI and S - FTPI ) are prepared by polycondensation reactions and display good heat stability, high BET surface area and good solubility in organic solvents. Moreover, both of R - FTPI and S - FTPI can be cast into robust, free-standing films suitable for enantioselective separation with symmetrical chiral selectivity.