Crystalline assembly of gold nanoclusters mediated via complexation reactions
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2018
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Abstract
Atoms, owing to the polarizability of the electrons, can be easily arranged into molecules. However, atomic nanoclusters, which in many aspects are similar to that of atoms, lacks the presence of polarizable electrons and hence are restricted from being spatially organized in a manner akin to that of arrangement of atoms to in molecules. In order to circumvent this limitation, the ligands stabilizing the nanoscale particles have emerged as an effective medium for spatial organization of theses nanoscale particles. For example, a large amount of effort has been invested in ligand mediated assembly of quantum clusters. In an allied vein, van der Waal’s interaction based assembly of nanoclusters has also been pursued. These methodologies, though effective in spatial organization of nanoscale clusters with high ease of synthesis, have not led to emergence of superior properties of the assembly vis-à-vis the constituents.To this end, designing an alternate approach for systematic assembly of nanoclusters, which would not only enable systematic organization of nanoclusters but also would endow the assembled clusters with intriguing properties, was deemed important. This approach was envisioned to originate from the knowledge of complexation reactions. The idea could be based on the fact that the ligands stabilizing the clusters could coordinate with metal ions and form inorganic complexes. This would not only allow facile formation of assembly of nanoclusters with well-defined structures but also invoke newer physical, optical and chemical properties to the clusters.
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Supervisor: Anumita Paul
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CHEMISTRY