Issue 14, 2021

Stepwise collapse of a giant pore metal–organic framework


Defect engineering is a powerful tool that can be used to tailor the properties of metal–organic frameworks (MOFs). Here, we incorporate defects through ball milling to systematically vary the porosity of the giant pore MOF, MIL-100 (Fe). We show that milling leads to the breaking of metal–linker bonds, generating additional coordinatively unsaturated metal sites, and ultimately causes amorphisation. Pair distribution function analysis shows the hierarchical local structure is partially retained, even in the amorphised material. We find that solvents can be used to stabilise the MIL-100 (Fe) framework against collapse, which leads to a substantial retention of porosity over the non-stabilised material.

Graphical abstract: Stepwise collapse of a giant pore metal–organic framework

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Article information

Article type
17 Mar 2021
17 Mar 2021
First published
26 Mar 2021
This article is Open Access
Creative Commons BY license

Dalton Trans., 2021,50, 5011-5022

Stepwise collapse of a giant pore metal–organic framework

A. F. Sapnik, D. N. Johnstone, S. M. Collins, G. Divitini, A. M. Bumstead, C. W. Ashling, P. A. Chater, D. S. Keeble, T. Johnson, D. A. Keen and T. D. Bennett, Dalton Trans., 2021, 50, 5011 DOI: 10.1039/D1DT00881A

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