Thioureas with organic substituents are conveniently prepared in a single step from commercially available amines and organoisothiocyanate or thiophosgene derivatives. Reaction of these thioureas with metal surfactant complexes produces metal sulfide nanocrystals in qauntitative yields. Their conversion rate is readily tuned by adjusting the organic substituents, allowing this family of precursors to be useful for nanocrystal synthesis over a range of more than 100 �C in reaction temperature. Fine control over the conversion rate allows a desired nanocrystal size to be prepared in quantitative yield at a single temperature. The relationship between the precursor conversion rate and crystal nucleation as well as size distribution focusing will be described.

Substituted thioureas: A tunable precursor library for colloidal nanocrystal synthesis

247th National Meeting (2014)

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