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Controlling the structure and functionality of crystalline metal–organic frameworks (MOFs) using molecular building units and post-synthetic functionalisation presents challenges when extending this approach to their amorphous counterparts (aMOFs). Here, we present a new bottom-up approach for synthesising a series of Zr-based aMOFs, which involves linking metal–organic clusters with specific ligands to regulate local connectivity. In addition, we overcome the limitations of post-synthetic modifications in amorphous systems, demonstrating that homogeneous functionalisation is achievable even without regular internal voids. By altering the acidity of the side group, length, and degree of connectivity of the linker, we could control the porosity, proton conductivity, and mechanical properties of the resulting aMOFs.

Rights:

• Creative Commons BY-NC Attribution-NonCommercial 4.0 International
  

Keyword: metal-organic frameworks, amorphous, bottom-up assembly, sol-gel synthesis, functionalisation

Date published: 2024-10-07

Publisher: Royal Society of Chemistry (RSC)

Journal:

• Chemical Science (ISSN: 20416520) vol. 15 issue. 42 p. 17562-17570

Funding:

Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.1039/d4sc05053c

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Updated at: 2024-11-11 16:30:18 +0900

Published on MDR: 2024-11-11 16:30:18 +0900