The synthesis of monodisperse colloidal nanocrystals (NCs) with controlled composition, size, and shape provides ideal building blocks for the assembly of new thin films and devices. These monodisperse colloidal NCs act as "artificial atoms" with tunable electronic, optical, and magnetic properties that allow the development of a new periodic table for design at the Mesoscale. In this talk, I will briefly outline the current state of the art in synthesis, purification, and integration of single-phase NCs and core-shell (heterostructures) NCs emphasizing the design of semiconductor building blocks with tunable shapes (spheres, roads, cubes, discs, octahedra, etc. I will then share how these tailored NCs can be directed to assemble into single-component, binary, ternary NC superlattices providing a scalable route to the production of multifunctional thin films. The modular assembly of these NCs allows the desirable features of the underlying quantum phenomena to be enhanced even as the interactions between the NCs allow new delocalized properties to emerge.<br/>This presentation will focus on the synthesis, purification, organization, and integration of single-phase NCs and core-shell (heterostructures) and heterodimer nanocrystals (Janus) NCs emphasizing the design of semiconductor and metal building blocks with tunable shapes (spheres, roads, cubes, discs, octahedral in combination with transition metal NCs. Complimentary NC sizes and shapes will be used to produce multi-functional catalytic films. In addition, the programming of metal and metal oxide NC architectures using dendron-based surface ligands will be explored as a route to create new organic/inorganic hybrid materials that preserve accessibility for small reactants to the active sites.

Synthesis of multifunctional nanomaterials through the self-assembly of size and shape selected nanocrystals

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ACS Spring 2023

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