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Citation: LI Zheng, ZHU Haie, YAN Kai, YI Changfeng, XU Zushun. Preparation and Characterization of Rare Earth Europium Containing Bifunctional Fluorescent Magnetic Nanoparticles[J]. Chinese Journal of Applied Chemistry, ;2014, 31(7): 828-834. doi: 10.3724/SP.J.1095.2014.30607 shu

Preparation and Characterization of Rare Earth Europium Containing Bifunctional Fluorescent Magnetic Nanoparticles

LI Zheng ^a ,
ZHU Haie ^a ,
^a ,
YAN Kai ^a ,
YI Changfeng ^a,b ,
XU Zushun ^b,,

1.
a College of Materials Science and Engineering, Hubei University, Wuhan 430062, China;
2.
b Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan 430062, China

Corresponding author: XU Zushun,
Received Date: 2 December 2013
Available Online: 2 January 2014
Fund Project: 国家自然科学基金资助项目(51273058) (51273058)

Firstly oleic acid and sodium undecylenate modified water-soluble magnetic fluid was prepared.Then in the presence of water-based magnetic fluid,fluorescent magnetic nanoparticles were successfully synthesized by soap-free and seeded emulsion polymerization of rare earth complex monomer Eu(AA)₃Phen(AA=acrylic acid,phen=1,10-phenanthroline) polymerized with styrene(St) and glycidyl methacrylate(GMA) using potassium persulfate(KPS) as the initiator.The morphology and size of the products were characterized by transmission electron microscopy(TEM) and dynamic light scattering(DLS) granulometer.Experimental results show that the fluorescent magnetic nanoparticles have obvious core-shell structures.Their particle sizes are smaller than 100 nm and have narrow size distribution.The chemical and crystalline structures of the particles were analyzed by Fourier transform infrared spectroscopy(FTIR) and X-ray diffraction(XRD).The magnetic and fluorescent properties of the particles were characterized by vibrating sample magnetometer(VSM) and fluorescence spectrophotometer.These results show that the fluorescent nanoparticles exhibit the superparamagnetic property.Their fluorescence emission spectra show characteristic emission peaks of Eu³⁺ at 594 and 619 nm,respectively.
- water-based magnetic fluid,
- soap-free and seeded emulsion polymerization,
- rare earth,
- europium,
- fluorescent magnetic nanoparticles
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