期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 54, 期 20, 页码 5966-5970出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201500468
关键词
crystalline capsules; host-guest systems; ligand design; metal-organic frameworks; open metal sites
资金
- 973 program of China [2014CB845600]
- NNSF of China [21290171, 21421001]
- MOE Innovation Team of China [IRT13022]
Metal-organic frameworks (MOFs) are shown to be good examples of a new class of crystalline porous materials for guest encapsulation. Since the encapsulation/release of guest molecules in MOF hosts is a reversible process in nature, how to prevent the leaching of guests from the open pores with minimal and nondestructive modifications of the structure is a critical issue. To address this issue, we herein propose a novel strategy of encapsulating guests by introducing size-matching organic ligands as bolts to lock the pores of the MOFs through deliberately anchoring onto the open metal sites in the pores. Our proposed strategy provides a mechanical way to prevent the leaching of guests and thereby has less dependence on the specific chemical environment of the hosts, thus making it applicable for a wide variety of existing MOFs once the size-matching ligands are employed.
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