4146-73-0Relevant articles and documents
Use of sulfur and selenium compounds as precursors to nanostructured materials
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Page/Page column 23, (2019/04/26)
The presently disclosed subject matter provides processes for preparing nanocrystals, including processes for preparing core-shell nanocrystals. The presently disclosed subject matter also provides sulfur and selenium compounds as precursors to nanostructured materials. The presently disclosed subject matter also provides nanocrystals having a particular particle size distribution.
A Tunable library of substituted thiourea precursors to metal sulfide nanocrystals
Hendricks, Mark P.,Campos, Michael P.,Cleveland, Gregory T.,Plante, Ilan Jen-La,Owen, Jonathan S.
, p. 1226 - 1230 (2015/06/22)
Controlling the size of colloidal nanocrystals is essential to optimizing their performance in optoelectronic devices, catalysis, and imaging applications. Traditional synthetic methods control size by terminating the growth, an approach that limits the reaction yield and causes batch-to-batch variability. Herein we report a library of thioureas whose substitution pattern tunes their conversion reactivity over more than five orders of magnitude and demonstrate that faster thiourea conversion kinetics increases the extent of crystal nucleation. Tunable kinetics thereby allows the nanocrystal concentration to be adjusted and a desired crystal size to be prepared at full conversion. Controlled precursor reactivity and quantitative conversion improve the batch-tobatch consistency of the final nanocrystal size at industrially relevant reaction scales.
