Molecules to Nanomaterials: Tailored Routes to Clusters

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The synthesis of molecules that contain a strictly defined number of metal atoms can be assisted by the incorporation of other element types that serve to help assemble such "clusters" in a size and shape controlled manner. When this synthesis is carried out in tandem with other molecules (ligands) that form bonds to cluster surfaces to impart stability and rigidity, it even becomes possible to prepare clusters containing several hundred metal atoms all the while retaining control of composition at the atomic level. In addition to its importance for fundamental science, this control of cluster structure and chemical stability are key components for application oriented research in areas such as display technologies, catalysis and molecular electronics, interdisciplinary fields that can span the realms of physics, chemistry, and materials science. The objectives of the research program described in this proposal are to develop new and better approaches to cluster synthesis for coinage metals (copper; silver; gold) where small molecules are designed, prepared and built into higher order molecular architectures. The research program will: establish methods to prepare exceptionally stable ligand surfaces in order to markedly enhance the processability of nanometer sized clusters; incorporate tailored surface functionality for sensing and biologically labelling applications of clusters; develop methods to prepare clusters with specialized surface ligands in order to enhance the inherent luminescence (light emitting) properties of these coinage metal containing molecules. The graduate (MSc, PhD) and undergraduate (BSc) students working in these areas are trained in advanced chemical synthesis, characterization methods and nanomaterials design. They are able to enter the high tech workforces in academia, industry and government where they bring their knowledge, developed skills sets and innovation, and continue to push the boundaries of modern research.