Star-Shaped Magnetic-Plasmonic Au@FeO Nano-Heterostructures for Photothermal Therapy.

Here, we synthesize a Au@FeO core@shell system with a highly uniform unprecedented star-like shell morphology with combined plasmonic and magnetic properties. An advanced electron microscopy characterization allows assessing the multifaceted nature of the Au core and its role in the growth of the peculiar epitaxial star-like shell with excellent crystallinity and homogeneity. Magnetometry and magneto-optical spectroscopy revealed a pure magnetite shell, with a superior saturation magnetization compared to similar Au@FeO heterostructures reported in the literature, which is ascribed to the star-like morphology, as well as to the large thickness of the shell.

Multifunctional FeO-Au Nanoparticles for the MRI Diagnosis and Potential Treatment of Liver Cancer.

Heterodimeric nanoparticles comprising materials with different functionalities are of great interest for fundamental research and biomedical/industrial applications. In this work, FeO-Au nano-heterostructures were synthesized by a one-step thermal decomposition method. The hybrid nanoparticles comprise a highly crystalline 12 nm magnetite octahedron decorated with a single noble metal sphere of 6 nm diameter.