American Chemical Society
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Pure-Supramolecular-Linker Approach to Highly Connected Metal–Organic Frameworks for CO2 Capture

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journal contribution
posted on 2019-09-05, 13:46 authored by Xiaohui Song, Mingxing Zhang, Cong Chen, Jingui Duan, Wenwei Zhang, Yi Pan, Junfeng Bai
A pure-supramolecular-linker (PSL) approach for the formation of metal–organic frameworks (MOFs) was initially given, which was demonstrated by syntheses of two highly connected and isostructural MOFs, {Fe3O­(TPBTM6–)­(Cl)­(H2O)2} (TPBTM = N,N′,N″-tris­(isophthalyl)-1,3,5-benzenetricarboxamide) (NJU-Bai52, NJU-Bai for Nanjing University Bai group) and {Sc3O­(TPBTM6–)­(OH)­(H2O)2} (NJU-Bai53). Very interestingly, they exhibit exceptional thermal stability, water stability, and highly selective CO2 capture properties. In particular, NJU-Bai53 with higher uptakes (2.74 wt % at 0.4 mbar and 298 K, 7.67 wt % at 298 K and 0.15 bar) and higher selectivity may be an excellent candidate for CO2 capture.