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    • 89. 发明申请
    • Method of preparation of biomagnetic nanoparticles coated with a noble metal layer
    • 用贵金属层涂覆的生物磁纳米颗粒的制备方法
    • US20060140868A1
    • 2006-06-29
    • US11156740
    • 2005-06-20
    • Stephanie GrancharovStephen O'BrienGlenn HeldChristopher Murray
    • Stephanie GrancharovStephen O'BrienGlenn HeldChristopher Murray
    • A61K49/06A61K9/28
    • B82Y5/00A61K9/0009A61K49/183H01F1/0054
    • A method for the preparation of magnetic nanoparticles coated with a noble metal is described. The method includes providing a first mixture containing a first non-polar organic solvent and uncoated magnetic nanoparticles. The first mixture is mixed with a second mixture containing a second non-polar organic solvent and ions comprising the noble metal to form a third mixture. The third mixture is mixed with an organic ligand or a fourth mixture containing an organic ligand to form a fifth mixture. The fifth mixture is reacted with a sixth mixture containing a reducing agent to form a seventh mixture containing the monodispersed magnetic nanoparticles coated with the noble metal. The monodispersed magnetic coated nanoparticles may be separated from the seventh mixture by adding a polar organic solvent or a mixture of polar organic solvents in which the nanoparticles are insoluble.
    • 描述了制备用贵金属涂覆的磁性纳米颗粒的方法。 该方法包括提供含有第一非极性有机溶剂和未涂覆的磁性纳米颗粒的第一混合物。 将第一混合物与含有第二非极性有机溶剂的第二混合物和包含贵金属的离子混合以形成第三混合物。 将第三混合物与有机配体或含有机配体的第四混合物混合以形成第五混合物。 将第五混合物与含有还原剂的第六混合物反应,形成包含用贵金属涂覆的单分散磁性纳米颗粒的第七混合物。 可以通过加入极性有机溶剂或其中纳米颗粒不溶的极性有机溶剂的混合物将单分散磁性涂覆的纳米颗粒与第七混合物分离。