Publication date: 15th May 2025
Solution-phase colloidal synthesis is a powerful approach for accessing multi-metal chalcogenide nanomaterials with tunable compositions, structures, and properties. However, the controlled synthesis of multi-metal chalcogenides featuring complex, often non-centrosymmetric or low-symmetry crystal structures remains a significant challenge. In this work, we present a solution-phase synthetic strategy for producing ternary and quaternary multi-metal chalcogenide nanocrystals that exhibit structural motifs beyond conventional zinc blende and wurtzite frameworks. We demonstrate the selective formation of both metastable and thermodynamic phases, guided by kinetic control and precursor reactivity. The phase purity and intricate crystallography of the resulting nanocrystals are confirmed through comprehensive structural characterization using X-ray diffraction (XRD), transmission electron microscopy (TEM), and energy-dispersive X-ray spectroscopy (EDS). This poster highlights the synthetic methodologies and mechanistic insights critical to expanding the library of colloidally synthesized multi-metal chalcogenides with complex crystal structures. Our findings provide a pathway for the rational design of novel nanomaterials with tailored functionalities rooted in their unique crystallographic architectures.
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