Stafford Shelley, Garnier Coralie, Gun'ko Yurii K
School of Chemistry, Trinity College Dublin, Dublin 2, Ireland.
Institute of Chemistry of Clermont-Ferrand, Sigma Clermont, 63170 Aubiere, France.
Nanomaterials (Basel). 2018 Dec 13;8(12):1044. doi: 10.3390/nano8121044.
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.
在这项工作中，通过使用两种互补的聚电解质——聚苯乙烯磺酸盐（PSS）和聚烯丙胺盐酸盐（PAH），开发出了新型磁等离子体纳米复合材料。带负电荷的聚电解质PSS被用作磁铁矿纳米颗粒的稳定剂，而带正电荷的聚电解质PAH则用于稳定金纳米颗粒。这两种物质的结合产生了一种具有高度可重复性和可扩展性的磁等离子体纳米复合材料。发现这种方法适用于各种PSS浓度。所制备的磁等离子体纳米材料已通过振动样品磁强计（VSM）、透射电子显微镜（TEM）和紫外可见光谱进行了表征。这些纳米复合材料有潜力用于包括生物分离和生物传感在内的各种生物应用中。
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