TY - JOUR
T1 - 2,2′-Biphenol-based Ultrathin Microporous Nanofilms for Highly Efficient Molecular Sieving Separation
AU - Li, Shao Lu
AU - Chang, Guoliang
AU - Huang, Yangzheng
AU - Kinooka, Ken
AU - Chen, Yanting
AU - Fu, Wenming
AU - Gong, Genghao
AU - Yoshioka, Tomohisa
AU - McKeown, Neil B.
AU - Hu, Yunxia
N1 - Funding Information:
The authors would like to thank the Analytical & Testing Center of Tiangong University for XPS, NMR and AFM characterization. And we also gratefully acknowledge the support of National Natural Science Foundation of China (No. 21978215), Tianjin Education Scientific Research Projects (No. 2019KJ006), the Science and Technology Plans of Tianjin (No. 20ZYJDJC00100), and the Natural Science Foundation of Tianjin (No. 18JCYBJC43300). S.‐L. was supported in part by the China Scholarship Council.
Publisher Copyright:
© 2022 Wiley-VCH GmbH.
PY - 2022/9/23
Y1 - 2022/9/23
N2 - Organic solvent nanofiltration (OSN) is an emerging membrane separation technology, which urgently requires robust, easily processed, OSN membranes possessing high permeance and small solutes-selectivity to facilitate enhanced industrial uptake. Herein, we describe the use of two 2,2′-biphenol (BIPOL) derivatives to fabricate hyper-crosslinked, microporous polymer nanofilms through IP. Ultra-thin, defect-free polyesteramide/polyester nanofilms (≈5 nm) could be obtained readily due to the relatively large molecular size and ionized nature of the BIPOL monomers retarding the rate of the IP. The enhanced microporosity arises from the hyper-crosslinked network structure and monomer rigidity. Specifically, the amino-BIPOL/PAN membrane exhibits extraordinary permselectivity performances with molecular weight cut-off as low as 233 Da and MeOH permeance of ≈13 LMH/bar. Precise separation of small dye mixtures with similar M.W. based on both their charge and molecular size are achieved.
AB - Organic solvent nanofiltration (OSN) is an emerging membrane separation technology, which urgently requires robust, easily processed, OSN membranes possessing high permeance and small solutes-selectivity to facilitate enhanced industrial uptake. Herein, we describe the use of two 2,2′-biphenol (BIPOL) derivatives to fabricate hyper-crosslinked, microporous polymer nanofilms through IP. Ultra-thin, defect-free polyesteramide/polyester nanofilms (≈5 nm) could be obtained readily due to the relatively large molecular size and ionized nature of the BIPOL monomers retarding the rate of the IP. The enhanced microporosity arises from the hyper-crosslinked network structure and monomer rigidity. Specifically, the amino-BIPOL/PAN membrane exhibits extraordinary permselectivity performances with molecular weight cut-off as low as 233 Da and MeOH permeance of ≈13 LMH/bar. Precise separation of small dye mixtures with similar M.W. based on both their charge and molecular size are achieved.
KW - 2,2′-Biphenol Derivative Monomer
KW - Interfacial Polymerization
KW - Microporous Organic Polymers (MOPs)
KW - Organic Solvent Nanofiltration
KW - Precise Sieving
U2 - 10.1002/anie.202212816
DO - 10.1002/anie.202212816
M3 - Article
AN - SCOPUS:85139946708
SN - 1433-7851
JO - Angewandte Chemie - International Edition
JF - Angewandte Chemie - International Edition
ER -