Luminomagnetic Silica-Coated Heterodimers of Core/Shell FePt/Fe₃O₄ and CdSe Quantum Dots as Potential Biomedical Sensor

Figure 1

TEM images of the obtained nanoparticles in each synthesis route: (a) as-synthesized FePt/Fe₃O₄, (b) FePt/Fe₃O₄-CdSe HNS after magnetic separation, (c) silica-coated FePt/Fe₃O₄-CdSe HNS, and (d) size distribution histogram of the silica-coated HNS. Inset in (a) shows details of the iron oxide layer onto the metallic FePt core and in (c) shows an individual silica-coated HNS particle with distinguished contrast among the different phases.

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