Matthew Cliff presents Coordination frameworks: from complex order to quantum function

Описание: Coordination frameworks: from complex order to quantum function



Coordination framework materials, where metal ions are connected by molecular ligands into extended networks, are modular: their components can be exchanged while retaining the overall structural topology. This modularity allows for design strategies that are challenging to realise in conventional atomic inorganic materials. In this talk I will discuss recent work from the Cliffe Group investigating complex order in coordination framework compounds, and their potential thus to realise quantum properties.

I will highlight in particular our work on metal thiocyanates as pseudohalides, showing that the thiocyanates are as rich as metal halides, uncovering quantum magnetism in Cu(NCS)2 [1] candidate single layer ferromagnetism in Ni(NCS)2[2]; and offer new routes to ferroelectricity in thiocyanate Prussian Blue analogues.[3] I will also discuss how dense metal-organic frameworks can be used to realise canonical quantum phases, using the topological S=2 Haldane phase as an exemplar.[4]

[1] M J Cliffe, J Lee, J A M Paddison, S Schott, P Mukherjee, M W Gaultois, P Manuel, H Sirringhaus, S E Dutton and C P Grey, Phys Rev B, 97, 144421 (2018).
[2] E N Bassey, J A M Paddison, E N Keyzer, J Lee, P Manuel, I da Silva, S E Dutton, C P Grey, M J Cliffe, Inorg Chem, 59, 11627 (2020).
[3] J Y Lee, S Ling, S P Argent, M S Senn, L Cañadillas-Delgado, M J Cliffe, Chemical Science, 12, 3516-3525 (2021).
[4] J Pitcairn, A Iliceto, L Cañadillas-Delgado, O Fabelo, C Liu, C Balz, A Weilhard, S P Argent, A J Morris, M J Cliffe, J. Am. Chem. Soc., in press (2023). arXiv:2212.09393