手性(物理)
旋转对称性
折叠(高阶函数)
对称(几何)
纳米颗粒
材料科学
几何学
圆对称性
物理
纳米技术
凝聚态物理
分子物理学
光学
经典力学
对称性破坏
量子力学
自发对称破缺
显式对称破缺
数学
机械工程
工程类
作者
Xuehao Sun,Lichao Sun,Lei Lin,Shaoyuan Guo,Yuxin Yang,Binbin Zhang,Chuang Liu,Yunlong Tao,Qingfeng Zhang
出处
期刊:ACS Nano
[American Chemical Society]
日期:2024-03-22
标识
DOI:10.1021/acsnano.3c12637
摘要
Chirality transfer from chiral molecules to chiral nanomaterials represents an important topic for exploring the origin of chirality in many natural and artificial systems. Moreover, developing a promising class of chiral nanomaterials holds great significance for various applications, including sensing, photonics, catalysis, and biomedicine. Here we demonstrate the geometric control and tunable optical chirality of chiral pentatwinned Au nanoparticles with 5-fold rotational symmetry using the seed-mediated chiral growth method. A distinctive growth pathway and optical chirality are observed using pentatwinned decahedra as seeds, in comparison with the single-crystal Au seeds. By employing different peptides as chiral inducers, pentatwinned Au nanoparticles with two distinct geometric chirality (pentagonal nanostars and pentagonal prisms) are obtained. The intriguing formation and evolution of geometric chirality with the twinned structure are analyzed from a crystallographic perspective upon maneuvering the interplay of chiral molecules, surfactants, and reducing agents. Moreover, the interesting effects of the molecular structure of peptides on tuning the geometric chirality of pentatwinned Au nanoparticles are also explored. Finally, we theoretically and experimentally investigate the far-field and near-field optical properties of chiral pentatwinned Au nanoparticles through numerical simulations and single-particle chiroptical measurements. The ability to tune the geometric chirality in a controlled manner represents an important step toward the development of chiral nanomaterials with increasing architectural complexity for chiroptical applications.
科研通智能强力驱动
Strongly Powered by AbleSci AI