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Polyelectrolyte-Stabilised Magnetic-Plasmonic Nanocomposites.

ABSTRACT: 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.

SUBMITTER: Stafford S

PROVIDER: S-EPMC6316294 | biostudies-literature | 2018 Dec

REPOSITORIES: biostudies-literature

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Polyelectrolyte-Stabilised Magnetic-Plasmonic Nanocomposites.

Stafford Shelley S Garnier Coralie C Gun'ko Yurii K YK

Nanomaterials (Basel, Switzerland) 20181213 12

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 a ...[more]

PMID: 30551644

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