Probing Magnetic Correlations in HKUST-1

Metal-organic frameworks (MOFS), in which metal centres are coordinated into extended structures via organic ligands, have attracted significant potential for the properties their high porosity enable. While the magnetic properties of related dense frameworks have recently attracted significant attention the magnetic properties of porous MOFs remain underexplored. Highly porous HKUST-1 is an archetypical MOF based on spin 1/2 Cu centres, which featurea strongly coupled magnetic dimers. Dimers are connected into a lattice based on equilaterial triangles, potentially leading to magnetic frustration, with significant interdimer coupling facilitated by aromatic ligands. We will measure the intradimer and interdimer correlations to understand how its intra- and interdimer coupling evolves through analysing its magnetic diffuse scattering at key temperatures.