Poly(allylamine) stabilized iron oxide magnetic nanoparticles

Poly(allylamine) stabilized iron oxide magnetic nanoparticles
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DOI:
10.1007/s11051-006-9205-3
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发表时间:
2007-10-01
影响因子:
2.5
通讯作者:
Hu, Jun
Hu, Jun
中科院分区:
材料科学4区
文献类型:
--
作者:
El Khoury, Jouliana M.;Caruntu, Daniela;Hu, Jun

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本文描述了一种用聚(烯丙胺)(PAA)分散和表面功能化金属氧化物磁性纳米颗粒(10 nm)的新方法。在该方法中,用二乙醇胺 (DEA) 作为二甘醇 (DEG) 和甲醇中的表面封端剂制备 Fe3O4 纳米粒子,并与 PAA 进行配体交换。该方法允许将磁性纳米粒子分散成水溶液中的单个或2-5个纳米粒子的小簇。所得纳米粒子是水溶性的并且稳定数月。 PAA 稳定的 Fe3O4 纳米粒子通过 TEM、TGA 和 FT-IR 进行表征。 PAA 涂层的 Fe3O4 纳米粒子将允许对其表面进行进一步的化学定制和工程设计,以用于生物医学应用。
This paper describes a new method for the dispersing and surface-functionalization of metal oxide magnetic nanoparticles (10 nm) with poly(allylamine) (PAA). In this approach, Fe3O4 nanoparticles, prepared with diethanolamine (DEA) as the surface capping agent in diethyleneglycol (DEG) and methanol, are ligand exchanged with PAA. This method allows the dispersing of magnetic nanoparticles into individual or small clusters of 2-5 nanoparticles in aqueous solutions. The resulting nanoparticles are water soluble and stable for months. The PAA stabilized Fe3O4 nanoparticles are characterized by TEM, TGA, and FT-IR. The PAA-coated Fe3O4 nanoparticles will allow further chemical tailoring and engineering of their surfaces for biomedical applications.