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

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2023年 / 145卷 / 30期

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

页码：16821 / 16827

页数：7