Tom, Jessica, Ohno, Kohji and Perrier, Sébastien (2016) Surface-initiated SET living radical polymerisation for the synthesis of silica–polymer core–shell nanoparticles. Polymer Chemistry, 7 (39). pp. 6075-6083. doi:10.1039/C6PY01290F

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Abstract

We report the use of surface-initiated single-electron transfer living radical polymerisation (SI SET-LRP) to prepare inorganic–organic core–shell nanoparticles with functional grafted chains of high molecular weight. The potential of SI SET-LRP is demonstrated by the preparation of a series of silica–polymer core–shell materials from a silica nanoparticle template bearing a bromo ester initiating group in the presence of a free initiator, with detailed kinetic investigations using methyl acrylate and tert-butyl acrylate. Under optimised polymerisation conditions, concentrated polymer brushes with grafting densities as high as 0.8 chains per nm2 and relatively high molecular weight polymer grafts (degree of polymerisation, DPn, up to 1000) were achieved whilst employing a heterogeneous copper(0) wire catalyst at low polymerisation temperatures. Under optimal conditions, the polymer shell grows similarly to the free polymer with increasing monomer conversion to produce well-defined monodisperse particles with a narrow size distribution. The particle uniformity results in the formation of particle assemblies that display long-range 2D and 3D order, as characterised by electron microscopy.

Item Type:	Journal Article
Subjects:	Q Science > QD Chemistry
Divisions:	Faculty of Science > Chemistry
Library of Congress Subject Headings (LCSH):	Polymerization, Polymers , Monomers, Nanoparticles
Journal or Publication Title:	Polymer Chemistry
Publisher:	Royal Society of Chemistry
ISSN:	1759-9954
Official Date:	21 October 2016
Dates:	Date Event 21 October 2016 Published 7 September 2016 Available 6 September 2016 Accepted 25 July 2016 Submitted
Volume:	7
Number:	39
Page Range:	pp. 6075-6083
DOI:	10.1039/C6PY01290F
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Funder:	Australia. Government, Royal Society (Great Britain). Wolfson Research Merit Award (RSWRMA), monash
Grant number:	WM130055 (RSWRMA)

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