Amorphous metal–organic frameworks (MOFs) are an emerging class of materials. However, their structural characterisation represents a significant challenge. Fe-BTC, and the commercial equivalent Basolite® F300, are MOFs with incredibly diverse catalytic ability, yet their disordered structures remain poorly understood in comparison to the crystalline structures of MIL-100 (Figures). In our work, we have previously found that that the structures of amorphous MOFs can be represented by models containing a mixture of short- and medium-range order. We have also shown how the introduction of disorder into crystalline structures may impart functional properties to materials, including the ability to separate hydrocarbon mixtures.

Selected References

Mixed hierarchical local structure in a disordered metal–organic framework.

A. F. Sapnik, I. Bechis, S. M. Collins, D. N. Johnstone, G. Divitini, A. J. Smith, P. A. Chater, M. Addicoat, T. Johnson, D. A. Keen, K. E. Jelfs and T. D. Bennett*, Nat. Commun., 2021, 12, 2062.

Gas adsorption in the topologically disordered fe-btc framework.

A. F. Sapnik, C. W. Ashling, L. K. Macreadie, J. Lee, T. Johnson, S. G. Telfer and T. D. Bennett*,J. Mat. Chem. A., 2021, 9, 27019-27027

Multivariate analysis of disorder in metal–organic frameworks.

A. F. Sapnik, I. Bechis, A. M. Bumstead, T. Johnson, P. A. Chater, D. A. Keen, K. E. Jelfs and T. D. Bennett*,Nat. Commun, 2022, 13, 2173.

Modelling the effect of defects and disorder in amorphous metal-organic frameworks.

I Bechis, A. Sapnik, A. Tarzia, E. Wolpert, M. Addicoat, D. Keen, T. D. Bennett and K. Jelfs*, Chem. Mater.,2022,34, 9042–9054