期刊
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
卷 13, 期 6, 页码 4066-4071出版社
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/jnn.2013.7452
关键词
ZnO QDs; Luminescent Properties; Magnetism; Cytotoxicity
类别
资金
- National Natural Science Foundation of China [20961006]
- Inner Mongolia Natural Science Foundation [20080404MS0201]
- Inner Mongolia Technology Innovation and Guidance Funds
Cobalt and Lanthanum-doped ZnO QDs are synthesized by a modified sot gel method under atmospheric conditions. The as-prepared quantum dots are characterized by X-ray powder diffraction (XRD), energy dispersive X-ray (EDX) analysis and high resolution transmission electron microscopy (HRTEM). The optical properties of the products are studied by fluorescent spectroscopy. With a proper Co and La doping, these nanoparticles possess exceptionally small size and enhanced fluorescence. Hysteresis loops of un-doped ZnO QDs and Co and La-doped ZnO QDs indicate that both the samples show ferromagnetic behavior at room temperature. Finally, these nanoparticles can label the BGC 803 cells successfully in short time and present no evidence of toxicity or adverse affect on cell growth even at the concentration up to 1 mM. We expect that the as-prepared Co and La-doped ZnO QDs can provide a better reliability of the collected data and find promising applications in biological, medical and other fields.
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