writer：Xuan Yue, Jinlan Li, Nan Yan, Wei Jiang
keywords：胶体体, 超晶格, 聚合物修饰纳米粒子, 受限组装, 表面增强拉曼散射
source：期刊
specific source：The Journal of Physical Chemistry C, 2022, 126(5), 2756-2762
Issue time：2022年

摘要：通过乳液界面自组装策略研究了聚合物修饰金属纳米粒子（NP）构筑单元的自组装。结果表明，获得了具有高度有序六角排列金属NP构筑单元的中空胶体体，通过调节聚合物配体分子量可有效调控中空胶体体内相邻金属NP间的粒子间距。有趣的是，随着内部十六烷相体积分数增加，可形成特定片状超晶格。此外，制备的胶体体可作为表面增强拉曼散射的优异基底，并在光热治疗中具有潜在应用。该研究为制备分级有序金属超结构提供了有前景的方法，在光热治疗、化学传感器和生物光学成像等方面具有应用潜力。

Abstract：Self-assembly of polymer-tethered metal nanoparticle (NP) building blocks is studied via an emulsion interface self-assembly strategy. The results show that the hollow colloidosomes with a highly ordered hexagonal arrangement of metal NP building blocks are obtained. The interparticle distance between the adjacent metal NPs within the hollow colloidosomes can be effectively tuned by adjusting the molecular weight of the polymeric ligands. Interestingly, with an increase in the volume fraction of the internal hexadecane phase, the particular sheet-like superlattices can be formed. Moreover, the prepared colloidosomes can serve as an excellent substrate for the surface-enhanced Raman scattering and have potential application in photothermal therapy. We believe that this study can provide a promising way to fabricate hierarchical ordered metal superstructures, which have potential applications in photothermal therapy, chemical sensors, and biological optical-imaging.

论文链接：https://doi.org/10.1021/acs.jpcc.1c08769