An X-ray Photoelectron Spectroscopy Study of Postsynthetic Exchange in UiO-66

被引：5
|
作者：
Moreton, Jessica C. [1 ]
Low, Jin Xiang [2 ]
Penticoff, Katrina C. [2 ]
Cohen, Seth M. [1 ]
Benz, Lauren [2 ]
机构：
[1] Univ Calif San Diego, Dept Chem & Biochem, La Jolla, CA 92093 USA
[2] Univ San Diego, Dept Chem & Biochem, San Diego, CA 92110 USA
来源：
LANGMUIR | 2022年 / 38卷 / 04期
基金：
美国国家科学基金会;
关键词：
METAL-ORGANIC FRAMEWORKS; ASSISTED LINKER EXCHANGE; ACTIVE-SITES; LIGAND; POLYMERIZATION; NANOPARTICLES; MEMBRANES; DYNAMICS; BEHAVIOR; REMOVAL;
D O I：
10.1021/acs.langmuir.1c03015
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Postsynthetic exchange (PSE) is a method that is widely used to change the composition of metal-organic frameworks (MOFs) by replacing connecting linkers or metal nodes after the framework has been synthesized. However, few techniques can probe the nature and distribution of exchanged species following PSE. Herein, we show that X-ray photoelectron spectroscopy can be used to compare the relative concentrations of exchanged ligands at the surface and interior regions of MOF particles. Specifically, PSE of iodobenzene dicarboxylate ligands results in a gradient distribution from surface to bulk in UiO-66 nanoparticles that depends on PSE time. X-ray photoelectron spectroscopy also reveals differences between the surface chemistry of the PSE product and that of the direct synthesis product.
引用
收藏
页码：1589 / 1599
页数：11
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