Yue Xuan, Li Feibo, Fu Xiying, Wang Yanming, Yan Nan
College of Materials Science and Engineering, Technology Innovation Center of Modified Plastics of Hebei Province, Hebei University of Engineering, Handan 056038, China.
College of Chemistry, Changchun Normal University, Changchun 130032, China.
Soft Matter. 2024 Oct 16;20(40):8098-8103. doi: 10.1039/d4sm00836g.
Ring-like hierarchical superstructures have attracted increasing attention in recent years due to their structural symmetry and interesting properties. Here, we obtain well-defined ring-like superstructures with tunable interparticle distance from the self-assembly of polystyrene (PS)-tethered gold nanoparticles (AuNPs@PS). The results show that the interparticle distance between the adjacent AuNPs of the ring-like superstructures can be systematically tailored by adjusting the molecular weight of the tethered PS ligands. The thickness of the ring-like superstructures is proportional to the concentration of the inorganic NP building blocks. Interestingly, the formation of ring-like superstructures can be extended to a variety of inorganic NP building blocks with different diameters, shapes, tethered polymers. The PS-tethered gold nanorods (AuNRs) and gold nanocubes (AuNCs) can also self-assemble into ring-like superstructures. It is noteworthy that this strategy is universal to fabricate a variety of ring-like superstructures, which have potential applications in surface-enhanced Raman scattering, optoelectronics, and sensors.
近年来，环状分层超结构因其结构对称性和有趣的性质而受到越来越多的关注。在此，我们通过聚苯乙烯（PS）连接的金纳米颗粒（AuNPs@PS）的自组装获得了具有可调粒子间距离的明确环状超结构。结果表明，通过调节连接的PS配体的分子量，可以系统地调整环状超结构中相邻AuNP之间的粒子间距离。环状超结构的厚度与无机NP构建块的浓度成正比。有趣的是，环状超结构的形成可以扩展到具有不同直径、形状和连接聚合物的各种无机NP构建块。PS连接的金纳米棒（AuNRs）和金纳米立方体（AuNCs）也可以自组装成环状超结构。值得注意的是，这种策略对于制造各种环状超结构具有通用性，这些超结构在表面增强拉曼散射、光电子学和传感器方面具有潜在应用。
