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Chemical Strategies for Dendritic Magneto‐Plasmonic Nanostructures Applied to Surface Enhanced Raman Spectroscopy

Von Wiley-VCH zur Verfügung gestellt

Chemical analyses in the field using surface enhanced Raman scattering (SERS) protocols are expected to be part of several analytical procedures applied to water quality monitoring. To date, these endeavors have been supported by developments on SERS substrate nanofabrication, instrumentation portability and the internet of things. Here, we report distinct chemical strategies for preparing magneto-plasmonic (Fe 3 O 4 :Au) colloids, which are relevant in the context of trace level detection of water contaminants due to their inherent multifunctionality. The main objective of this research is to investigate the role of poly(amidoamine) dendrimers (PAMAM) in the preparation of SERS substrates integrating both functionalities in single nanostructures. Three chemical routes have been investigated to design magneto-plasmonic nanostructures which translate into different ways for assessing SERS detection using distinct interfaces. Hence, a series of magneto-plasmonic colloids have been characterized and then assessed for their SERS activity by using a model pesticide (thiram) dissolved in aqueous samples.

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