Abstract：
Precisely controlling the spatial distributions and arrangements of metal nanoparticles (NPs) into block copolymers is of great importance for fabricating novel nanomaterials with the desired optical and electronic properties. Herein, we develop a simple yet versatile strategy to prepare organic/inorganic nanosheets formed by the coassembly of polystyrene-block-poly(4-vinylpyridine) (PS-b-P4VP) and PS tethered gold nanoparticles (AuNPs@PS) within emulsion droplets. The arrangement of the AuNPs@PS building blocks within the block copolymers (BCP)/AuNPs nanosheets can be adjusted by tuning the effective size ratio (λeff), which can be controlled by the core diameter of the AuNPs and the molecular weight of the PS. Furthermore, the content of the AuNPs is also another essential parameter to manipulate the structures of the nanosheets with the specific λeff. Thus, the BCP/AuNPs hybrid nanosheets with controllable distributions and arrangements of the AuNPs were successfully prepared via tuning of λeff and the content of AuNPs. This study provides a facile way to fabricate well-ordered hybrid nanosheets.
摘要：
精确控制金属纳米粒子（NP）在嵌段共聚物中的空间分布和排列对于制造具有所需光学和电子性能的新型纳米材料非常重要。在这里，我们开发了一种简单而通用的策略来制备由乳液液滴中的聚苯乙烯-嵌段-聚（4-乙烯基吡啶）（PS-b-P4VP）和PS系金纳米颗粒（AuNPs@PS）共组装形成的有机/无机纳米片。嵌段共聚物(BCP)/AuNP纳米片内的AuNP@PS结构单元的排列可以通过调节有效尺寸比(λeff)来调节,这可以通过AuNP的核心直径和PS的分子量来控制。此外，AuNP的含量也是操纵具有特定λeff的纳米片结构的另一个基本参数。因此，通过调整λeff和AuNP的含量，成功制备了具有可控分布和AuNP排列的BCP/AuNP杂化纳米片。这项研究提供了一种简单的方法来制造有序的混合纳米片。
