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Silica core–polystyrene shell nanoparticle synthesis and assembly in three dimensions
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Sabouri, Hadi, Huang, Yun, Ohno, Kohji and Perrier, Sébastien (2015) Silica core–polystyrene shell nanoparticle synthesis and assembly in three dimensions. Nanoscale, 7 (45). pp. 19036-19046. doi:10.1039/c5nr06400g ISSN 2040-3364.
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Official URL: http://dx.doi.org/10.1039/C5NR06400G
Abstract
Monodisperse silica nanoparticles (SiNPs) grafted with well-defined and highly dense polystyrene brushes are used as building blocks for the formation of three-dimensional (3D) colloidal crystals. By adjusting the refractive indices and the density of the hybrid particles with those of mixed solvents, iridescent microcrystals were formed throughout the entire suspension which were characterised by confocal laser microscopy. These core–shell hybrid particles are not charged and the driving force of the crystallization relies on repulsive forces between the polymer brushes with high grafting density. The interparticle distance is correlated to Bragg's Law and can be controlled by manipulating the grafting density and the length of the polymer brushes. Finally, the uniformity of these unique core–shell particles was exploited to generate 3D assemblies by a rapid and simple process based on centrifugation.
Item Type: | Journal Article | ||||||||||
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Subjects: | T Technology > TA Engineering (General). Civil engineering (General) | ||||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry | ||||||||||
Library of Congress Subject Headings (LCSH): | Nanosilicon | ||||||||||
Journal or Publication Title: | Nanoscale | ||||||||||
Publisher: | Royal Society of Chemistry | ||||||||||
ISSN: | 2040-3364 | ||||||||||
Official Date: | 7 December 2015 | ||||||||||
Dates: |
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Volume: | 7 | ||||||||||
Number: | 45 | ||||||||||
Number of Pages: | 11 | ||||||||||
Page Range: | pp. 19036-19046 | ||||||||||
DOI: | 10.1039/c5nr06400g | ||||||||||
Status: | Peer Reviewed | ||||||||||
Publication Status: | Published | ||||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||||
Date of first compliant deposit: | 18 August 2016 | ||||||||||
Date of first compliant Open Access: | 11 October 2016 | ||||||||||
Funder: | Australian Postgraduate Awards, Surface Coatings Association Australia, Royal Society (Great Britain). Wolfson Research Merit Award (RSWRMA), Monash-Warwick Alliance |
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