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Triptycene‐based Chiral Porous Polyimides for Enantioselective Membrane Separation
Author(s) -
Zhang QingPu,
Wang Zhen,
Zhang ZheWen,
Zhai TianLong,
Chen JingJing,
Ma Hui,
Tan Bien,
Zhang Chun
Publication year - 2021
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.202102350
Subject(s) - enantioselective synthesis , enantiomer , selectivity , triptycene , membrane , solubility , monomer , materials science , polyimide , condensation polymer , porosity , chemistry , chemical engineering , organic chemistry , catalysis , polymer chemistry , polymer , biochemistry , layer (electronics) , engineering
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.