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To aggregate, or not to aggregate? considerations in the design and application of polymeric thermally-responsive nanoparticles
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Gibson, Matthew I. and O'Reilly, Rachel K. (2013) To aggregate, or not to aggregate? considerations in the design and application of polymeric thermally-responsive nanoparticles. Chemical Society Reviews, Volume 42 (Number 17). pp. 7204-7213. doi:10.1039/c3cs60035a ISSN 0306-0012.
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Official URL: http://dx.doi.org/10.1039/c3cs60035a
Abstract
The aim of this review is to highlight some of the challenges in designing thermally responsive nanoparticles, where the responsivity is endowed by a responsive polymeric corona. A review of the literature reveals many contradictory observations upon heating these particles through their transition temperature. Indeed, both an increase in size due to aggregation and particle shrinkage have been reported for apparently similar materials. Furthermore, careful review of the literature shows that responsive nanoparticles do not have the same transition temperature or properties as their constituent polymers. These observations raise serious questions as to how to achieve the rational design of a responsive particle with a predictable and reproducible response. Here we highlight specific cases where conflicting results have been observed for spherical particles and put these results into the context of flat-surface grafted polymer brushes to explain the behaviour in terms of grafting density, curvature, chain end effects and the role of the underlying substrate. A better understanding of these observations should lead to the improved design of nanoparticles with real function and applications.
Item Type: | Journal Article | ||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry | ||||
Journal or Publication Title: | Chemical Society Reviews | ||||
Publisher: | Royal Society of Chemistry | ||||
ISSN: | 0306-0012 | ||||
Official Date: | 7 September 2013 | ||||
Dates: |
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Volume: | Volume 42 | ||||
Number: | Number 17 | ||||
Page Range: | pp. 7204-7213 | ||||
DOI: | 10.1039/c3cs60035a | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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