Synthesis and Evaluation of Fluorescent Magnetic Composites as Targeted Drug Delivery Carriers

We have developed Fe 3 O 4 @ZnS-based fluorescent magnetic composites as targeted drug delivery carriers via a facile route. The results indicated that the composites exhibited both magnetic and fluorescent properties. Fe 3 O 4 @ZnS possessed high saturation magnetization (68.25 emu/g) at room temperature. Ultraviolet light can be easily obtained by exposing the microspheres to different excitation wavelengths. The drug loading studies showed that Fe 3 O 4 @ZnS-based fluorescent magnetic composites had an excellent drug loading performance. These traits made the composites better for the application of medical imaging and magnetic targeted drug delivery.