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A Tale of Two Trimers from Two Different Worlds: A COF‐Inspired Synthetic Strategy for Pore‐Space Partitioning of MOFs
Author(s) -
Wang Yanxiang,
Zhao Xiang,
Yang Huajun,
Bu Xianhui,
Wang Yong,
Jia Xiaoxia,
Li Jinping,
Feng Pingyun
Publication year - 2019
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201901343
Subject(s) - sorption , porosity , molecule , ligand (biochemistry) , trimer , pyridine , mesoporous material , materials science , chemical engineering , chemistry , condensation , metal organic framework , adsorption , nanotechnology , dimer , organic chemistry , catalysis , physics , thermodynamics , biochemistry , receptor , engineering
The introduction of a symmetry‐ and size‐matching pore‐partitioning agent in the form of either a molecular ligand, such as 2,4,6‐tri(4‐pyridinyl)‐1,3,5‐triazine ( tpt ), or a metal‐complex cluster, into the hexagonal channels of MIL‐88/MOF‐235‐type (the acs net) to create pacs ‐type (partitioned acs ) crystalline porous materials is an effective strategy to develop high‐performance gas adsorbents. We have developed an integrated COF–MOF coassembly strategy as a new method for pore‐space partitioning through the coassembly of [(M 3 (OH) 1− x (O) x (COO) 6 ] MOF‐type and [B 3 O 3 (py) 3 ] COF‐type trimers. With this strategy, the coordination‐driven assembly of the acs framework occurred concurrently and synergistically with the COF‐1‐type condensation of pyridine‐4‐boronic acid into a C 3 ‐symmetric trimeric boroxine molecule. The resulting boroxine‐based pacs materials exhibited dramatically enhanced gas‐sorption properties as compared to nonpartitioned acs ‐type materials and are among the most efficient NH 3 ‐sorption materials.