磁性纳米粒子和荧光纳米球的静电共组装：一种制备双峰纳米棒的通用方法
Electrostatic co-assembly of magnetic nanoparticles and fluorescent nanospheres: a versatile approach toward bimodal nanorods
摘要：
多峰纳米颗粒的制备由于其在光电子学、光子学特别是生物成像等许多应用领域的巨大潜力而引起了人们的极大兴趣。纳米粒子（Nanoparticles，NPs）具有多种性质（光学、电化学、磁性），可以利用互补的刺激来探测纳米粒子与周围环境的相互作用，因此，纳米粒子（Nanoparticles，NPs）已经成为一种备受推崇的工具，可以对细胞和组织进行成像，其对比度与生物材料的尺寸以及由尺寸减小引起的量子限制效应的存在相匹配。在这种情况下，磁性和发射特性（如荧光）的组合对于非侵入性研究、细胞分选或药物载体化显得特别有吸引力。因此，结合荧光和磁性需要精细的混合组装结构。大多数磁性纳米颗粒由金属氧化物或合金制成，例如γ-Fe 2 O3、Fe 3 O 4、FePt，而目标荧光实体通常是有机染料或量子点（QD）。
英文摘要：
The elaboration of multimodal nanoparticles stimulates tremendous interest owing to their numerous potentialities in many applicative fields like optoelectronics, photonics and especially bioimaging. The concomitant association of various properties (optical, electrochemical, magnetic) allows for the use of complementary stimuli in order to probe the interactions between the nanoparticles and their surroundings.Nanoparticles (NPs) have thus become highly praised tools to image cells and tissues with a large contrast compatible with the dimensions of biological materials and the existence of quantum confinement effects induced by the reduced dimensions. In this context, the combination of magnetism and emissive properties such as fluorescence appears particularly attractive for non-invasive investigations, cell sorting or drug vectorization. Therefore, combining both fluorescence and magnetism requires the delicate construction of hybrid assemblies. Most of the magnetic nanoparticles are made of metallic oxides or alloys, e.g. gamma-Fe2O3, Fe3O4, FePt, while the target fluorescent entities are often organic dyes or quantum dots (QDs).
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