Spatio?Chemical Heterogeneity of Defect?Engineered Metal–Organic Framework Crystals Revealed by Full?Field Tomographic X?ray Absorption Spectroscopy

The introduction of structural defects in metal-organic frameworks (MOFs), often achieved through the fractional use defective linkers, is emerging as a means to refine properties existing MOFs. These missing coordination fragments, create unsaturated framework nodes that may alter MOF. A property-targeted utilization this approach demands an understanding structure defect-engineered We demonstrate full-field X-ray absorption near-edge computed tomography can help improve our understanding. This was demonstrated by visualizing chemical heterogeneity found HKUST-1 MOF crystals. non-uniform incorporation and zonation linker discovered, leading presence clusters second polymer within HKUST-1. former suggested be responsible, part, for altered properties; thereby, advocating spatio-chemically resolved characterization