Preparation and characterization of (3-aminopropyl) triethoxysilane-coated magnetite nanoparticles
Preparation and characterization of (3-aminopropyl) triethoxysilane-coated magnetite nanoparticles
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DOI：
10.1016/j.jmmm.2004.01.094
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发表时间：
2004-08-01
影响因子：
2.7
通讯作者：
Toma, HE
中科院分区：
文献类型：
--
作者：
Yamaura, M;Camilo, RL;Toma, HE
通过硅烷化反应制备了3-氨丙基三乙氧基硅烷（NH 2（CH 2）（3）Si（OC 2 H5）（3））包覆的磁性纳米粒子，并通过X射线衍射、透射电子显微镜、原子力显微镜、傅里叶变换红外光谱和磁化强度测量等手段对其进行了表征。未涂覆和有机硅烷涂覆的磁铁矿在室温下表现出超顺磁性行为和强磁化。观察到锚定在涂覆的磁铁矿的外表面上的碱性基团。包覆磁铁矿的超顺磁性颗粒能够与生物分子、药物和金属结合，并以这种方式通过磁分离程序将它们从介质中除去。(C)2004 Elsevier B. V.保留所有权利。
Magnetite nanoparticles coated with (3-aminopropyl)triethoxysilane, NH2(CH2)(3)Si(OC2H5)(3), were prepared by silanization reaction and characterized by X-ray diffractometry, transmission electron microscopy, atomic force microscopy, Fourier transform infrared spectroscopy and magnetization measurements. Both uncoated and organosilane-coated magnetite exhibited superparamagnetic behavior and strong magnetization at room temperature. Basic groups anchored on the external surface of the coated magnetite were observed. The superparamagnetic particles of coated magnetite are able to bind to biological molecules, drugs and metals and in this way remove them from medium by magnetic separation procedures. (C) 2004 Elsevier B.V. All rights reserved.