I will describe the binding and displacement reactivity of excess metal cations on metal chalcogenide nanocrystal surfaces in the presence of Lewis basic ligands. We show this reaction is rapid and reversible leading to nanocrystal stoichiometries that depend sensitively on the solution concentration. The importance of this behavior to luminescence quantum yields and nanocrystal purification will be discussed.

Ligand exchange and the stoichiometry of metal chalcogenide nanocrystals

248th National Meeting (2014)

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