Facile One-Pot Synthesis and Morphological Control of Asymmetric Superparamagnetic Composite Nanoparticles
Facile One-Pot Synthesis and Morphological Control of Asymmetric Superparamagnetic Composite Nanoparticles
复制标题
不对称超顺磁性复合纳米颗粒的简易一锅法合成和形态控制
DOI：
10.1021/la200749w
复制
发表时间：
2011-06-07
期刊：
影响因子：
3.9
通讯作者：
Shi, Donglu
中科院分区：
文献类型：
--
作者：
Wang, Yilong;Xu, Hong;Shi, Donglu
采用一锅法合成了具有高各向异性和高磁含量的非对称磁性复合粒子。通过具有由聚苯乙烯和二氧化硅组成的颗粒的两个部分来建立不对称性，其中后者与磁铁矿纳米颗粒共轭。相分离被认为是在细乳液聚合和溶胶-凝胶反应过程中的无机和聚合物组分之间的不对称结构的发展的关键。磁性复合粒子的形态控制是通过调整工艺参数以简单的方式实现的。这些具有超顺磁性和两亲性的非对称纳米材料将在生物医学应用中具有巨大的潜力。
A one-pot colloidal reaction strategy was developed to synthesize asymmetric magnetic composite particles (AMCPs) with high anisotropy and magnetic content. The asymmetricity was established by having two portions of the particle composed of both polystyrene and silica, among which the latter was conjugated with magnetite nanoparticles. Phase separation was found to be critical in developing the asymmetric structure between the inorganic and polymer components during miniemulsion polymerization and the sol-gel reaction. Morphological control of the magnetic composite particles was achieved in a straightforward fashion by adjusting the processing parameters. These asymmetric nanomaterials with superparamagnetic and amphiphilic properties will have significant potential in biomedical applications.