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Open AccessArticle

Polyelectrolyte-Stabilised Magnetic-Plasmonic Nanocomposites

1
School of Chemistry, Trinity College Dublin, Dublin 2, Ireland
2
Institute of Chemistry of Clermont-Ferrand, Sigma Clermont, 63170 Aubiere, France
3
Information Optical Technology Centre, ITMO University, 197101 Saint Petersburg, Russia
*
Author to whom correspondence should be addressed.
Nanomaterials 2018, 8(12), 1044; https://doi.org/10.3390/nano8121044
Received: 22 October 2018 / Revised: 26 November 2018 / Accepted: 11 December 2018 / Published: 13 December 2018
(This article belongs to the Collection Applications of Magnetic Nanomaterials)
In this work, new magnetic-plasmonic nanocomposites have been developed through the use of two complementary polyelectrolytes–polystyrene sulfonate (PSS) and poly(allylamine hydrochloride) (PAH). PSS, a negatively charged polyelectrolyte, was utilized as a stabiliser for magnetite nanoparticles, and PAH, a positively charged polyelectrolyte, was used to stabilize gold nanoparticles. The combination of these two entities resulted in a magnetic-plasmonic nanocomposite that is highly reproducible and scalable. This approach was found to work for a variety of PSS concentrations. The produced magnetic-plasmonic nanomaterials have been characterized by vibrational sample magnetometry (VSM), transmission electron microscopy (TEM) and UV-Vis spectroscopy. These nanocomposite materials have the potential to be used in a variety of biological applications including bioseparation and biosensing. View Full-Text
Keywords: magnetic; plasmonic; nanoparticles; polyelectrolyte; multimodal magnetic; plasmonic; nanoparticles; polyelectrolyte; multimodal
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Stafford, S.; Garnier, C.; Gun’ko, Y.K. Polyelectrolyte-Stabilised Magnetic-Plasmonic Nanocomposites. Nanomaterials 2018, 8, 1044.

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