期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 57, 期 36, 页码 11706-11710出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201806910
关键词
defects; metal-organic frameworks (MOFs); NMR spectroscopy; post-synthetic exchange
资金
- European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant [663830]
- Welsh Government Ser Cymru Programme
- FLEXIS - European Regional Development Fund (ERDF) through the Welsh Government
- Robert A. Welch Foundation [C-0002]
- EPSRC [EP/M028267/1]
- European Regional Development Fund through the Welsh Government [80708]
- Welsh Government
Post-synthetic ligand exchange in the prototypical zirconium-based metal-organic framework (MOF) UiO-66 was investigated by insitu solution H-1 NMR spectroscopy. Samples of UiO-66 having different degrees of defectivity were exchanged using solutions of several terephthalic acid analogues in a range of conditions. Linker exchange only occurred in defect-free UiO-66, whereas monocarboxylates grafted at defect sites were found to be preferentially exchanged with respect to terephthalic acid over the whole range of conditions investigated. A 1:1 exchange ratio between the terephthalic acid analogue and modulator was observed, providing evidence that the defects had missing-cluster nature. Exsitu characterisation of the MOF powders after exchange corroborated these findings and showed that the physical-chemical properties of the MOF depend on whether the functionalisation occurs at defective sites or on the framework.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据