A new CoFe2O4-Cr2O3-SiO2 fluorescent magnetic nanocomposite

被引：38
作者：
Borgohain, Chandan [1 ,2 ]
Senapati, Kula Kamal [1 ,2 ]
Mishra, Debabrata [2 ]
Sarma, Kanak Ch. [3 ,4 ]
Phukan, Prodeep [1 ]
机构：
[1] Gauhati Univ, Dept Chem, Gauhati 781014, Assam, India
[2] Indian Inst Technol Guwahati, Gauhati 781039, Assam, India
[3] Gauhati Univ, Dept Instrumentat, Gauhati 781014, Assam, India
[4] Gauhati Univ, USIC, Gauhati 781014, Assam, India
来源：
NANOSCALE | 2010年 / 2卷 / 10期
关键词：
COBALT FERRITE; CONTRAST AGENTS; HIGH COERCIVITY; NANOPARTICLES; NANOCRYSTALS; CELLS; FLUID; FILMS; ANISOTROPY; PARTICLES;
D O I：
10.1039/c0nr00281j
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A combined sonochemical co-precipitaion method has been developed for the synthesis of a CoFe2O4-Cr2O3-SiO2 magnetic nanocomposite. The synthesis involved the pre-synthesis of CoFe2O4-Cr2O3 nanoparticles, which were subsequently coated with SiO2 by treatment with tetraethyl orthosilicate. It was observed that the as-prepared CoFe2O4-Cr2O3-SiO2 nanocomposite exhibits photoluminescence properties without the addition of any external fluorescent marker. The fluorescent magnetic nanoparticles (FMNPs) had a typical diameter of 30 +/- 5 nm and a saturation magnetization of 5.1 emu g(-1) at room temperature. This as-prepared nanocomposite was used for staining cultured HeLa cells for fluorescence imaging.
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收藏
页码：2250 / 2256
页数：7
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