期刊
ADVANCED SCIENCE
卷 6, 期 23, 页码 -出版社
WILEY
DOI: 10.1002/advs.201901855
关键词
linker design; linker desymmetrization; metal-organic frameworks; topology; zirconium
资金
- National Natural Science Foundation of China (NSFC) [21875285, 21571187]
- Taishan Scholar Foundation [ts201511019]
- Center for Gas Separations, an Energy Frontier Research Center - U.S. Department of Energy, Office of Science, Basic Energy Sciences [DE-SC0001015]
- Robert A. Welch Foundation through a Welch Endowed Chair [A-0030]
The discovery of metal-organic frameworks (MOFs) mimicking inorganic minerals with intricate topologies requires elaborate linker design guidelines. Herein, the concept of linker desymmetrization into the design of tetratopic linker based Zr-MOFs is applied. A series of bent tetratopic linkers with various substituents are utilized to construct Zr-MOFs with distinct cluster connectivities and topologies. For example, the assembly between a bent linker L-SO2 with C-2v symmetry and an 8-connected Zr-6 cluster leads to the formation of an scu topology, while another flu topology can be obtained by the combination of a novel 8-connected Zr-6 cluster and a bent linker L-O with C-1 symmetry. Further utilization of restricted bent linker [(L-(CH3)(6))] gives rise to a fascinating (4, 6)-c cor net, originated from the corundum lattice, with an unprecedented 6-c Zr-6 cluster. In addition, the removal of toxic selenite ions in aqueous solution is performed by PCN-903-(CH3)(6) which exhibits rapid and efficient detoxification. This work uncovers new structural opportunities for Zr-MOFs via linker desymmetrization and provides novel design strategies for the discovery of sophisticated topologies for practical applications.
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