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Issue 35, 2017
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Nearest-neighbour nanocrystal bonding dictates framework stability or collapse in colloidal nanocrystal frameworks

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Abstract

Block copolymers serve as architecture-directing agents for the assembly of colloidal nanocrystals into a variety of mesoporous solids. Here we report the fundamental order–disorder transition in such assemblies, which yield, on one hand, ordered colloidal nanocrystals frameworks or, alternatively, disordered mesoporous nanocrystal films. Our determination of the order–disorder transition is based on extensive image analysis of films after thermal processing. The number of nearest-nanocrystal neighbours emerges as a critical parameter dictating assembly outcomes, which is in turn determined by the nanocrystal volume fraction (fNC). We also identify the minimum fNC needed to support the structure against collapse.

Graphical abstract: Nearest-neighbour nanocrystal bonding dictates framework stability or collapse in colloidal nanocrystal frameworks

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Publication details

The article was received on 22 Dec 2016, accepted on 11 Apr 2017 and first published on 12 Apr 2017


Article type: Communication
DOI: 10.1039/C6CC10183F
Citation: Chem. Commun., 2017,53, 4853-4856
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    Nearest-neighbour nanocrystal bonding dictates framework stability or collapse in colloidal nanocrystal frameworks

    T. E. Williams, D. Ushizima, C. Zhu, A. Anders, D. J. Milliron and B. A. Helms, Chem. Commun., 2017, 53, 4853
    DOI: 10.1039/C6CC10183F

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