Synthesis and characterization of Fe3O4-CdX (X=S, Se) core-shell nanoparticles.
We report a facile one-pot synthesis of Fe3O4-CdX (X=S, Se) core-shell nanoparticles and characterized them with XRD, TEM, squid magnetometer, and UV-visible absorption and PL spectrometers. We observed that the core Fe3O4 nanoparticles showed a superparamagnetism at room temperature, whereas the shell CdX (X=S, Se) showed blue-shifts from the bulk materials in UV-visible absorption spectra, due to quantum confinement effect. These superparamagnetic and optical properties of the Fe3O4-CdX (X=S, Se) core-shell nanoparticles can be used for both MR and optical imagings. This dual imaging capability will increase a possibility of an early observation of disease such as cancer.
Patel
Daksha
D
Department of Chemistry College of Natural Sciences, Kyungpook National University, Taegu 702-701, South Korea.
Chang
Yongmin
Y
Kim
Tae Jeong
TJ
Jung
Myung-Hwa
MH
Lee
Gang Ho
GH
D000042:Absorption; D002104:Cadmium / Q000737:chemistry*; D003952:Diagnostic Imaging / Q000295:instrumentation; D052203:Ferrosoferric Oxide / Q000737:chemistry*; D008279:Magnetic Resonance Imaging / Q000295:instrumentation* / Q000379:methods; D053768:Metal Nanoparticles / Q000737:chemistry*; D008670:Metals / Q000737:chemistry; D046529:Microscopy, Electron, Transmission; D036103:Nanotechnology / Q000379:methods*; D055095:Optics and Photonics; D013053:Spectrophotometry / Q000379:methods; D013056:Spectrophotometry, Ultraviolet / Q000379:methods; D014466:Ultraviolet Rays; D014961:X-Ray Diffraction; D015032:Zinc / Q000737:chemistry
D008670:Metals; D002104:Cadmium; D015032:Zinc; D052203:Ferrosoferric Oxide