writer：Jinlan Li, Xin Yu, Jianing Zhang, Jing Jin, Yanxiong Pan, Xiangling Ji, Wei Jiang
keywords：纳米粒子, 嵌段共聚物, 乳液液滴, 组装, λeff, 纳米片
source：期刊
specific source：ACS Applied Materials & Interfaces, 2024, 16(31), 41332-41340
Issue time：2024年

摘要：精确控制金属纳米粒子（NPs）在嵌段共聚物中的空间分布和排列，对制造具有所需光学和电子性能的新型纳米材料至关重要。本文开发了一种简单而通用的策略，在乳液液滴内通过聚苯乙烯-b-聚4-乙烯基吡啶（PS-b-P4VP）与PS接枝金纳米粒子（AuNPs@PS）的共组装制备有机/无机纳米片。可通过调节有效尺寸比λeff调整BCP/AuNPs纳米片中AuNPs@PS构筑单元的排列，而λeff可通过AuNPs核直径和PS分子量控制。此外，AuNPs含量也是在特定λeff下调控纳米片结构的重要参数。因此，通过调节λeff和AuNPs含量，成功制备了AuNPs分布和排列可控的BCP/AuNPs杂化纳米片。该研究为制备有序杂化纳米片提供了简便方法。

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.

论文链接：https://doi.org/10.1021/acsami.4c08523