A facile route to synthesis of superparamagnetic Fe3O4-PDVB nanoworms

作者：Liu, Qingquan^*; Shen, Shaohua; Zhou, Zhihua; Tian, Li

来源：Materials Letters, 2009, 63(30): 2625-2627.

DOI：10.1016/j.matlet.2009.09.020

• Magnetic materials
• Nanocomposites
• Nanoworms

Fe3O4-polyclivinylbenzene (PDVB) nanoworms were firstly synthesized by precipitation polymerization of divinylbenzene in the presence of oleic acid coated iron oxide nanoparticles. The nanoworms had superparamagnetic properties at room temperature, but ferromagnetism at 5 K. Thermogravimetric analysis curves indicated that in comparison with magnetic nanoparticles, the weight percent of iron oxide in nanoworms was slightly declined due to the formation of Fe3O4-PDVB nanocomposites. The superparamagnetic nanoworms could be well dispersed in ethanol, and were capable of easy separation by an external magnetic field. Overall, this provided a valuable methodology for preparation of elongated magnetic nanoparticles with high surface-to-volume ratio, which had potential applications in drug delivery/targeting, magnetic resonance imaging, and nanoprobes for diagnosis and disease treatment.

• 出版日期2009-12-31
• 单位湖南科技大学