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晶体胶囊:通过尺寸匹配的配体螺栓锁定的MOF材料
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论文题目:Crystalline Capsules: Metal–Organic Frameworks Locked by Size-Matching Ligand Bolts
论文作者:Hao Wang, Jian Xu, Da-Shuai Zhang, Qiang Chen, Rong-Mei Wen, Ze Chang andProf. Xian-He Bu
发表期刊:Angew Chem Int Ed, 2015, 54: 5966-5970   [ pdf ]

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.