Thermally Stable Magneto-Plasmonic Nanoparticles for SERS with Tunable Plasmon Resonance.

ABSTRACT: Bifunctional magneto-plasmonic nanoparticles that exhibit synergistically magnetic and plasmonic properties are advanced substrates for surface-enhanced Raman spectroscopy (SERS) because of their excellent controllability and improved detection potentiality. In this study, composite magneto-plasmonic nanoparticles (Fe₃O₄@AgNPs) were formed by mixing colloid solutions of 50 nm-sized magnetite nanoparticles with 13 nm-sized silver nanoparticles. After drying of the layer of composite Fe₃O₄@AgNPs under a strong magnetic field, they outperformed the conventional silver nanoparticles during SERS measurements in terms of signal intensity, spot-to-spot, and sample-to-sample reproducibility. The SERS enhancement factor of Fe₃O₄@AgNP

SUBMITTER: Mikoliunaite L 

PROVIDER: S-EPMC9416134 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature