Synthesis and Characterization of Magnetite/Gold Core Shell Nanoparticles Stabilized with a β-Cyclodextrin Nanosponge to Develop a Magneto-Plasmonic System

Magnetite/gold core-shell nanoparticles (magnetite/gold NPs) have important optical and magnetic properties that provide potential for applications, especially biomedical ones. However, their preparation is not exempt from difficulties might lead to unexpected or undesired structures. This work reports the synthesis characterization of magnetite/gold NPs using tetramethylammonium hydroxide (TMAH) promote formation a continuous interface between magnetite core thin gold shell. The synthesized were characterized transmission electron microscopy (TEM), energy-dispersive spectroscopy (EDS), field emission scanning microscope (FE-SEM), ζ-potential, vibrating sample magnetometer (VSM), selected area diffraction (SAED), UV-Visible spectroscopy, dynamic light scattering (DLS), confirming structure with narrow size distribution while evidencing its plasmonic superparamagnetic as well. Further, associated stabilized β-cyclodextrin nanosponge (β-CDNSs), obtaining versatile magneto-plasmonic system applications in encapsulation controlled release drugs.