Volume 88 Issue 32 | p. 30 | Concentrates
Issue Date: August 9, 2010

Quantum Dot Mystery Resolved

A secondary phosphine in the starting material seems to be key to forming PbSe nanomaterials
Department: Science & Technology
News Channels: JACS In C&EN, Nano SCENE
Keywords: quantum dots, nanotechnology

The mechanism of quantum dot formation may not be what people thought, a study reveals (J. Am. Chem. Soc., DOI: 10.1021/ja103805s). A common source of selenium for the synthesis of CdSe or PbSe quantum dots is trioctylphosphine selenide (TOPSe). But when Todd D. Krauss, Christopher M. Evans, and Meagan E. Evans of the University of Rochester combined high-purity TOPSe with Pb(oleate)2, they . . .

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