ChemPhysChem 2016-03-03

Large-Scale Programmable Synthesis of PbS Quantum Dots.

Amanda Preske, Jin Liu, Oleg V Prezhdo, Todd D Krauss

Index: ChemPhysChem 17 , 681-6, (2016)

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Abstract

The most common method of synthesizing colloidal quantum dots (QDs) relies on an increasing particle size through increasing reaction time. We demonstrate a synthesis where the QD size is programmable through the use of a secondary phosphine sulfide precursor. The reaction runs to thermodynamic completion, resulting in a desired PbS diameter for a given set of specific reaction conditions, with no need for reaction quenching or post-synthesis size-separation. Moreover, this method is shown to produce high-quality PbS QDs on the grams scale. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.