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Issue 12, 2012
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Timing matters: the underappreciated role of temperature ramp rate for shape control and reproducibility of quantum dot synthesis

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Abstract

Understanding the coupled kinetic and thermodynamics factors governing colloidal nanocrystals nucleation and growth are critical factors in the predictable and reproducible synthesis of advanced nanomaterials. We show that the temporal temperature profile is decisive in tuning the particle shape from pseudo-spherical to monodisperse cubes. The shape of the nanocrystals was characterized by transmission electron microscopy and X-ray diffraction. We introduce a mechanism for the shape controlled synthesis in the context of temperature-dependent nucleation and growth and provide experimental evidence to support it.

Graphical abstract: Timing matters: the underappreciated role of temperature ramp rate for shape control and reproducibility of quantum dot synthesis

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Supplementary files

Article information


Submitted
30 Apr 2012
Accepted
14 May 2012
First published
15 May 2012

Nanoscale, 2012,4, 3625-3628
Article type
Communication

Timing matters: the underappreciated role of temperature ramp rate for shape control and reproducibility of quantum dot synthesis

W. J. Baumgardner, Z. Quan, J. Fang and T. Hanrath, Nanoscale, 2012, 4, 3625
DOI: 10.1039/C2NR31054F

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