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Clustered assembly of Au nanoparticles from spherical diblock copolymer micelles encapsulating Au nanoparticle

机译:来自球形二嵌段共聚物胶束的Au纳米粒子的聚集组装封装Au纳米粒子

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摘要

Superstructures composed of diblock copolymer micelles and inorganic nanoparticles are quite interesting because the specific arrangement of inorganic nanoparticles within the micellar structure can reveal interesting opportunities in many field of science. In this perspective, we report a simple method to produce clustered assembly of Au nanoparticles in the micelles in attempt to induce plasmonic coupling among multiple Au nanoparticles in the assembled structures. Here, we utilized polystyrene-block-poly(acrylic acid), PS-PAA, micelles containing single Au nanoparticle in the core (Au@PS-PAA micelles) as building materials to initiate next-level assembling process. In particular, the addition of HCl to the solution of Au@ PS-PAA micelles affected the overall equilibrium condition as well as kinetic process in the micellar solution. As a result, individual Au@ PS-PAA micelles could be merged together to form more large micelles with inclusion of multiple nanoparticles in the core, the process of which was accompanied with plasmonic coupling of Au nanoparticles. (C) 2017 Wiley Periodicals, Inc.
机译:二嵌段共聚物胶束和无机纳米粒子组成的上部结构是非常有趣的,因为胶束结构中的无机纳米粒子的具体安排可以在科学的许多领域显露有趣的机会。在这方面,我们报告一个简单的方法,以产生在企图诱导在组装结构的多个金纳米粒子中等离子体激元耦合群集组件的Au纳米颗粒在胶束中。在这里,我们使用聚苯乙烯 - 嵌段 - 聚(丙烯酸),PS-PAA,含在核心单Au纳米颗粒(金@ PS-PAA胶束)作为建筑材料启动下一级装配过程胶束。特别地,加入HCl于Au @ PS-PAA胶束的溶液的影响在胶束溶液的整体平衡条件以及动力学过程。其结果是,个体的Au @ PS-PAA胶束可以合并在一起以形成具有在所述芯包含多个纳米颗粒的更大的胶束,其中所述过程是伴随有Au纳米颗粒的等离子体激元耦合。 (c)2017 Wiley期刊,Inc。

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