Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1802499 | Journal of Magnetism and Magnetic Materials | 2009 | 4 Pages |
Abstract
We demonstrate a single-step facile approach for highly water-stable assembly of amine-functionalized Fe3O4 nanoparticles using thermal decomposition of Fe-chloride precursors in ethylene glycol medium in the presence of ethylenediamine. The average size of nanoassemblies is 40±1 nm, wherein the individual nanoparticles are about 6 nm. Amine-functionalized properties are evident from Fourier transform infrared spectrometer (FTIR), thermal and elemental analyses. The saturation magnetization and spin-echo r2 of the nanoassemblies were measured to be 64.3 emu/g and 314.6 mM−1 s−1, respectively. The higher value of relaxivity ratio (r2/r1=143) indicates that nanoassemblies are a promising high-efficiency T2 contrast agent platform.
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Authors
K.C. Barick, M. Aslam, Pottumarthi V. Prasad, Vinayak P. Dravid, Dhirendra Bahadur,