Dewi Melissa R, Laufersky Geoffry, Nann Thomas
ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Ian Wark Research Institute, University of South Australia, Adelaide, SA 5095 Australia.
Mikrochim Acta. 2015;182(13-14):2293-2298. doi: 10.1007/s00604-015-1571-z. Epub 2015 Jul 28.
Hetero-dimeric magnetic nanoparticles of the type Au-FeO have been synthesised from separately prepared, differently shaped (spheres and cubes), monodisperse nanoparticles. This synthesis was achieved by the following steps: (a) Mono-functionalising each type of nanoparticles with aldehyde functional groups through a solid support approach, where nanoparticle decorated silica nanoparticles were fabricated as an intermediate step; (b) Derivatising the functional faces with complementary functionalities (e.g. amines and carboxylic acids); (c) Dimerising the two types of particles via amide bond formation. The resulting hetero-dimers were characterised by high-resolution TEM, Fourier transform IR spectroscopy and other appropriate methods. Graphical AbstractNano-LEGO: Assembling two types of separately prepared nanoparticles into a hetero-dimer is the first step towards complex nano-architectures. This study shows a solid support approach to combine a gold and a magnetite nanocrystal.
已通过分别制备的、形状不同（球形和立方体）的单分散纳米颗粒合成了Au-FeO型异二聚体磁性纳米颗粒。该合成通过以下步骤实现：(a) 通过固相载体方法用醛官能团对每种类型的纳米颗粒进行单官能化，其中制备纳米颗粒修饰的二氧化硅纳米颗粒作为中间步骤；(b) 用互补官能团（如胺和羧酸）衍生功能面；(c) 通过酰胺键形成使两种类型的颗粒二聚化。所得异二聚体通过高分辨率透射电子显微镜、傅里叶变换红外光谱和其他适当方法进行表征。图形摘要纳米乐高：将两种分别制备的纳米颗粒组装成异二聚体是迈向复杂纳米结构的第一步。本研究展示了一种结合金和磁铁矿纳米晶体的固相载体方法。
