Multinary metal oxides containing vanadium are promising semiconductor materials for driving redox reactions with visible light. Complex vanadium oxides containing either bismuth, copper, or manganese, for example, are candidate photoanode materials for solar fuel applications due to favorable band gap energies and band edge positions. Access to colloidal nanocrystals (NCs) of metal vanadium oxides in the sub-10 nm range would allow solution-phase processing into films and mesostructured electrodes, or support homogeneous photocatalysis when dispersed in solution. NCs also have synthetically tunable size-dependent optical properties and surfaces that are amenable to chemical functionalization. A dearth of molecular precursors limits current access to unary and multinary vanadium oxide NCs. The objective of this project is to develop anionic vanadium-oxygen clusters, or polyoxovandates, as precursors for NC synthesis. Polyoxovanadates such as V3O93- and V4O124- are polyhedral anions that structurally resemble fragments of the extended solids, and when linked together, may provide a pathway to the target materials.

Developing vanadium-oxygen clusters as synthetic precursors for metal oxide nanocrystals

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.