Liu Wei, Jiang Shu-Dong, Yan Youguo, Wang Wensen, Li Jing, Leng Kai, Japip Susilo, Liu Jiangtao, Xu Hai, Liu Yanpeng, Park In-Hyeok, Bao Yang, Yu Wei, Guiver Michael D, Zhang Sui, Loh Kian Ping
Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore, Singapore.
Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, 117585, Singapore, Singapore.
Nat Commun. 2020 Apr 2;11(1):1633. doi: 10.1038/s41467-020-15503-6.
The synthesis of a polymer that combines the processability of plastics with the extreme rigidity of cross-linked organic networks is highly attractive for molecular sieving applications. However, cross-linked networks are typically insoluble or infusible, preventing them from being processed as plastics. Here, we report a solution-processable conjugated microporous thermoset with permanent pores of ~0.4 nm, prepared by a simple heating process. When employed as a two-dimensional molecular sieving membrane for hydrogen separation, the membrane exhibits ultrahigh permeability with good selectivity for H over CO, O, N, CH, CH and CH. The combined processability, structural rigidity and easy feasibility make this polymeric membrane promising for large-scale hydrogen separations of commercial and environmental relevance.
合成一种将塑料的可加工性与交联有机网络的极高刚性相结合的聚合物，对于分子筛应用极具吸引力。然而，交联网络通常不溶或不熔，这使得它们无法像塑料那样进行加工。在此，我们报道了一种通过简单加热过程制备的具有约0.4纳米永久孔隙的可溶液加工共轭微孔热固性材料。当用作二维氢分离分子筛膜时，该膜表现出超高渗透性，对氢气相对于一氧化碳、氧气、氮气、甲烷、乙烷和丙烷具有良好的选择性。可加工性、结构刚性和易于实现性相结合，使得这种聚合物膜在具有商业和环境相关性的大规模氢分离方面具有广阔前景。
