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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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Publication details

The article was received on 30 Apr 2012, accepted on 14 May 2012 and first published on 15 May 2012


Article type: Communication
DOI: 10.1039/C2NR31054F
Citation: Nanoscale, 2012,4, 3625-3628
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    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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