Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 60, Issue 23, Pages 12781-12785Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202102350
Keywords
chiral microporous polymers; enantioelective separation; membranes; triptycene
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Funding
- National Natural Science Foundation of China [21875079, 22031010, 22161142005, 22005110]
- National Undergraduate Program for Innovation and Entrepreneurship of China
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Enantiomers of 2,6-diaminotriptycene were separated and used to prepare chiral porous polyimides with good performance for enantioselective separation.
Enantiomers of 2, 6-diaminotriptycene (R, R-1 and S, S-1) are split by chiral-phase 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.
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