Super atom gold clusters are important form the standpoint of affording directional electron transfer. Our focus is on Au25 and Au144 species. In this presentation we compare clusters of Au25 with the icosohedral and bi-icosohedral crystal strutures. Extensive characterization was carried out on the systems to optically and electrochemically characterize the system. These clusters were then subjected to focused ligand exchange/direct synthesis with chromophoric ligands to transform the clusters to possess higher quantum yields. Two-photon cross-section measurements were done to indirectly prove covalent bonding of the chromophore along with fluorescence and electrochemistry. Dye loading was quantified using HNMR. These quantum sized monolayer protected gold clusters can be exploited for applications in catalysis, solar energy harvesting, imaging agents and sensors.

Super atom gold clusters: Optical and electrochemical properties

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.