纳米胶体聚集控制的超结构：中子小角度扩散的结构特性和数值模拟
Superstructures par agrégation contrôlée de nanocolloïdes: caractérisation structurale par diffusion de neutrons aux petits angles et simulation numérique
摘要：
胶束或带电纳米粒子与中性电荷嵌段共聚物在水溶液中的络合导致形成胶体超结构，也称为“胶体络合物”。它们的主要兴趣在于其尺寸的单分散性和其稳定性的增加。在这篇综述中，结构表征的动态光散射，低温透射电镜，小角中子散射。小角中子散射的结果进行了分析，使用数值模拟-蒙特卡罗或反向蒙特卡罗（RMC）。这种模拟有助于显示胶体超结构的不同模型之间的兼容性，以及实验。我们的研究结果使我们能够提出一个通用的结构复杂的胶体，由一个密集的核心相互作用的胶体，桥接的dielectric块，和一个水合冠。我们已经表明，这样的超结构系统地形成在这些系统中，无论是胶束或纳米粒子，不同的共聚物，和不同的电荷。案文是法文的。
英文摘要：
The complexation of micelles or charged nanoparticles with neutral-charged block copolymers in aqueous solutions leads to the formation of colloidal superstructures also termed 'colloidal complexes'. Their primary interest relies in their monodispersity in size, and in their increased domain of stability. In this review, the structural characterization by dynamic light scattering, cryo-TEM, and small angle neutron scattering is presented. Small angle neutron scattering results have been analyzed using numerical simulations - Monte Carlo or reverse Monte Carlo (RMC). Such simulations are useful to show the compatibility between different models of colloidal superstructures, and experiment. Our results have allowed us to propose a generic structure of complex colloids, made of a dense core of interacting colloids, bridged by polyelectrolyte blocks, and a hydrated corona. We have shown that such superstructures are formed systematically in these systems, with either micelles or nanoparticles, for different copolymers, and different charges. The text is in French.
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