期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 53, 期 3, 页码 815-818出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201307340
关键词
adsorption; metal-organic frameworks; microporous materials; symmetry-guided design; zirconium
资金
- Center for Gas Separations Relevant to Clean Energy Technologies, an Energy Frontier Research Center
- U.S. Department of Energy (DOE), Office of Science, Office of Basic Energy Sciences [DE-SC0001015, DE-FC36-07G017033, DE-AR0000249]
Two stable, non-interpenetrated MOFs, PCN-521 and PCN-523, were synthesized by a symmetry-guided strategy. Augmentation of the 4-connected nodes in the fluorite structure with a rigid tetrahedral ligand and substitution of the 8-connected nodes by the Zr/Hf clusters yielded MOFs with large octahedral interstitial cavities. They are the first examples of Zr/Hf MOFs with tetrahedral linkers. PCN-521 has the largest BET surface area (3411 m(2) g(-1)), pore size (20.5 x 20.5 x 37.4 angstrom) and void volume (78.5%) of MOFs formed from tetrahedral ligands. This work not only demonstrates a successful implementation of rational design of MOFs with desired topology, but also provides a systematic way of constructing non-interpenetrated MOFs with high porosity.
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