惰性
表面改性
金属有机骨架
微晶
组合化学
配体(生物化学)
化学
纳米技术
材料科学
有机化学
结晶学
物理化学
受体
生物化学
吸附
作者
Min Kim,John F. Cahill,Yongxuan Su,Kimberly A. Prather,Seth M. Cohen
出处
期刊:Chemical Science
[The Royal Society of Chemistry]
日期:2012-01-01
卷期号:3 (1): 126-130
被引量:400
摘要
Herein, we report that the exchange of ligands from an intact metal–organic framework (MOF) can be exploited as a means to introduce functionalized ligands into MOFs under mild conditions. It is shown that ligand exchange can occur with ‘inert’ Zr(IV)-based UiO-66 MOFs in a solvent dependent manner. We call this process postsynthetic exchange (PSE) and show that it provides access to MOFs that are not readily prepared in high quality by solvothermal methods. It was found that ligand exchange can occur between UiO-66 MOFs as monitored by aerosol time-of-flight mass spectrometry (ATOFMS). ATOFMS was used to analyze the chemical composition of microcrystalline MOFs on the single particle level, providing information not available through bulk analysis. PSE is an important postsynthetic approach to the modification of MOFs, and the ligand exchange revealed by ATOFMS requires a re-evaluation of the assumed ‘stability’ of even the most robust MOFs.
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