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Stepwise collapse of a giant pore metal–organic framework

DOI: 10.1039/D1DT00881A DOI Help

Authors: Adam F. Sapnik (University of Cambridge) , Duncan N. Johnstone (University of Cambridge) , Sean M. Collins (University of Cambridge; University of Leeds) , Giorgio Divitini (University of Cambridge) , Alice M. Bumstead (University of Cambridge) , Christopher W. Ashling , Philip A. Chater (Diamond Light Source) , Dean S. Keeble (Diamond Light Source) , Timothy Johnson (Johnson Matthey Technology Centre) , David A. Keen (ISIS Facility) , Thomas D. Bennett (University of Cambridge)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Dalton Transactions , VOL 38

State: Published (Approved)
Published: March 2021
Diamond Proposal Number(s): 20038 , 20198

Open Access Open Access

Abstract: 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.

Diamond Keywords: Gas Separation

Subject Areas: Materials, Chemistry

Diamond Offline Facilities: Electron Physical Sciences Imaging Centre (ePSIC)
Instruments: E02-JEM ARM 300CF , I15-1-X-ray Pair Distribution Function (XPDF)

Added On: 30/03/2021 09:49


Discipline Tags:

Chemistry Materials Science Metal-Organic Frameworks Metallurgy Organometallic Chemistry

Technical Tags:

Microscopy Scattering Electron Microscopy (EM) Transmission Electron Microscopy (TEM) Pair Distribution Function (PDF)