In Situ Self-Assembly of Thin ZnO Nanoplatelets into Hierarchical Mesocrystal Microtubules with Surface Grafting of Nanorods: A General Strategy towards Hollow Mesocrystal Structures

Authors

  • M.-S. Mo,

    1. Centre for Advanced Materials Technology (CAMT) and School of Aerospace, Mechanical and Mechatronic Engineering J07, The University of Sydney, Sydney, New South Wales 2006 (Australia)
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  • S. H. Lim,

    1. Centre for Advanced Materials Technology (CAMT) and School of Aerospace, Mechanical and Mechatronic Engineering J07, The University of Sydney, Sydney, New South Wales 2006 (Australia)
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  • Y.-W. Mai,

    1. Centre for Advanced Materials Technology (CAMT) and School of Aerospace, Mechanical and Mechatronic Engineering J07, The University of Sydney, Sydney, New South Wales 2006 (Australia)
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  • R.-K. Zheng,

    1. Australian Key Centre for Microscopy and Microanalysis, The University of Sydney, Sydney, New South Wales 2006 (Australia)
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  • S. P. Ringer

    1. Australian Key Centre for Microscopy and Microanalysis, The University of Sydney, Sydney, New South Wales 2006 (Australia)
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  • M.-S. Mo acknowledges a start-up grant (Project No. U2141) from the University of Sydney. Y.-W. Mai wishes to acknowledge the award of an Australian Federation Fellowship by the Australian Research Council tenable at the University of Sydney. We thank the referees of this paper for constructive comments. Supporting Information is available online from Wiley InterScience or from the author.

Abstract

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A general Ostwald ripening process combined with colloidal soft-matter self-assembly has been developed for coaxing the solid nanoparticle rods into the tubular mesocrystals: self-assembled ZnO microtubules with surface grafting of nanorods, in which the polyelectrolyte is exploited to tailor the forces between the colloidal ZnO nanoparticles and manipulate nanoparticle self-assembly. The strategy presented here can readily be extended to other soft-matter chemical systems that afford colloidal processing.

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