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Fast synthesis of dopamine-coated Fe3O4 nanoparticles through ligand-exchange method |
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| Authors: | Peng Ana b c Fang Zuod Yuan Peng Wue Jun Hua Zhangc Zhao Hui Zhenga Xiao Bin Dinga Yu Xing Penga a Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu China Graduate |
| Affiliation: | School of the Chinese Academy of Sciences,Beijing 100049,China c State Key Laboratory of Polymer Materials and Engineering of China,Polymer Research Institute,Sichuan University,Chengdu 610065,China d College of Chemistry & Environment Protection Engineering,Southwest University for Nationalities,Chengdu 610041,China e State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum University(SWPU),Chengdu 610500,China |
| Abstract: | A fast approach was described for the synthesis of water-dispersible monodisperse dopamine-coated Fe3O4 nanoparticles（DA-Fe3O4） with uniform size and shape via ligand-exchange of oleic acid on Fe3O4 using only 2 min.The prepared DA-Fe3O4 nanoparticles were characterized by transmission electron microscopy,Fourier transform infrared spectrometry,and vibrating sample magnetometer.The results indicated that the resulting DA-Fe3O4 nanoparticles had an average diameter of about 19.2 nm. The magnetic saturation value of the prepared DA-Fe3O4 nanoparticles was determined to be 72.87 emu/g,which indicating a well-established superparamagnetic property. |
| Keywords: | Magnetic nanoparticles Fe3O4 Dopamine Ligand-exchange |
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