Quantifying Ligand Binding to the Surface of Metal-Organic Frameworks

被引:13
作者
Wang, Austin [1 ]
Barcus, Kyle [1 ]
Cohen, Seth M. [1 ]
机构
[1] Univ Calif, Dept Chem, Biochem, San Diego, La Jolla, CA 92093 USA
基金
美国国家科学基金会;
关键词
SIZE;
D O I
10.1021/jacs.3c04892
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The binding of molecules to the exterior surface of metal-organicframeworks (MOFs) is not a well-understood phenomenon. Herein, thesurface chemistry of three MOFs, UiO-66, MIL-88B-NH2, andZIF-8, is investigated using dye-displacement experiments. MOF particlesurfaces were modified with ligand-appended BODIPY dyes. The abilityof the coordinated dyes to be displaced by a variety of exogenousligands was measured by ultraviolet-visible spectroscopy. This methodallowed for measurement of apparent binding constants for differentligands to the MOF surface. As might be expected, ligand affinitywas dependent on the nature of the underlying metal-ligandcomposition of the MOF. This work provides a quantitative evaluationof ligand binding to MOF surfaces and important insights for the modulation,modification, and manipulation of MOFs.
引用
收藏
页码:16821 / 16827
页数:7
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