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Synthesis of monodisperse magnetite nanoparticles via chitosan-poly (acrylic acid) template and their application in MRI
Alternative TitleJ. Alloy. Compd.
Feng, B.; Hong, R. Y.; Wu, Y. J.; Liu, G. H.; Zhong, L. H.; Zheng, Y.; Ding, J. M.; Wei, D. G.
2009
Source PublicationJournal of Alloys and Compounds
Issue1-2Pages:356-362
AbstractUltrasmall magnetite nanoparticles were prepared by using chitosan-polyacrylic acid (CS-PAA) nanospheres as template. The CS-PAA hollow nanospheres could be prepared by polymerization of acrylic acid monomers in the presence of chitosan. The Fe(3)O(4) loading was done by dissolving FeCl(3)center dot 6H(2)O and FeSO(4)center dot 7H(2)O into CS-PAA nanospheres solution followed by adding NH(4)OH. In finally, CS-PAA template could be removed by adjusting with HCl to pH < 1. The obtained particles were characterized by dynamic light scattering (DLS) in aqueous solution and observed by transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR) and X-ray. The results revealed that the Fe(3)O(4) nanoparticles were 3-5 nm in size with excellent dispersibility. From the magnetometer measurements data, the particles exhibited superparamagnetic property with saturation magnetizations of 40.7 emu/g. The MRI experiment on living rabbit showed that nanoparticles prepared by the current synthetic approach had a significant magnetic resonance signal enhancement in T2-weighted image of lymph nodes. (C) 2008 Elsevier B.V. All rights reserved.
KeywordNanostructured Materials Chemical Synthesis Magnetization Transmission Electron Microscopy (Tem) Iron-oxide Nanoparticles Gamma-fe2o3 Nanoparticles In-vivo Particles Cancer Nanocrystals Surface Nanospheres
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Indexed BySCI
Language英语
WOS IDWOS:000264890500075
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Cited Times:49[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/11377
Collection研究所(批量导入)
Recommended Citation
GB/T 7714
Feng, B.,Hong, R. Y.,Wu, Y. J.,et al. Synthesis of monodisperse magnetite nanoparticles via chitosan-poly (acrylic acid) template and their application in MRI[J]. Journal of Alloys and Compounds,2009(1-2):356-362.
APA Feng, B..,Hong, R. Y..,Wu, Y. J..,Liu, G. H..,Zhong, L. H..,...&Wei, D. G..(2009).Synthesis of monodisperse magnetite nanoparticles via chitosan-poly (acrylic acid) template and their application in MRI.Journal of Alloys and Compounds(1-2),356-362.
MLA Feng, B.,et al."Synthesis of monodisperse magnetite nanoparticles via chitosan-poly (acrylic acid) template and their application in MRI".Journal of Alloys and Compounds .1-2(2009):356-362.
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