The early observation of strong circular dichroism for individual nanoparticles and their assemblies have developed into a rapidly expanding field of chiral inorganic nanostructures. The chiral inorganic nanostructures encompass sophisticated constructs from metals, semiconductors, ceramics, and nanocarbons with multiple chiral geometries with characteristic scales from Ångströms to microns. Such versatility enables their functional engineering over a broad range of physical and chemical properties inspiring multiple technological realizations exemplified by biosensing and optoelectronics. This talk will address (1) the origin of the uniquely high values of optical anisotropy; (2) the mechanisms of chirality transfer in inorganic materials; and (3) differences/similarities with chiral supramolecular, liquid crystal, and biological assemblies. The role of chiral inorganic nanostructures in homochirality of life on Earth will be briefly discussed. In that respect, long-range correlations and critical phenomena in chiral nanoassemblies leading to the emergence of geometrically complex structures will be demonstrated. The novel venues for practical realizations of chiral nanoassemblies included in the talk will be photocatalytic C-C coupling in biomimetic chiral supraparticles and polarization spectroscopy in terahertz spectral window with chiroplasmonic kirigami composites.

New developments in chiral inorganic nanostructures

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.