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- Title
Halide-assisted differential growth of chiral nanoparticles with threefold rotational symmetry.
- Authors
Zheng, Jiapeng; Boukouvala, Christina; Lewis, George R.; Ma, Yicong; Chen, Yang; Ringe, Emilie; Shao, Lei; Huang, Zhifeng; Wang, Jianfang
- Abstract
Enriching the library of chiral plasmonic nanoparticles that can be chemically mass-produced will greatly facilitate the applications of chiral plasmonics in areas ranging from constructing optical metamaterials to sensing chiral molecules and activating immune cells. Here we report on a halide-assisted differential growth strategy that can direct the anisotropic growth of chiral Au nanoparticles with tunable sizes and diverse morphologies. Anisotropic Au nanodisks are employed as seeds to yield triskelion-shaped chiral nanoparticles with threefold rotational symmetry and high dissymmetry factors. The averaged scattering g-factors of the l- and d-nanotriskelions are as large as 0.57 and − 0.49 at 650 nm, respectively. The Au nanotriskelions have been applied in chiral optical switching devices and chiral nanoemitters. We also demonstrate that the manipulation of the directional growth rate enables the generation of a variety of chiral morphologies in the presence of homochiral ligands. Expanding the library of chiral plasmonic nanoparticles will foster the development of chiroptical applications. Here, the authors apply halide-assisted differential growth to convert Au nanodisks into triskelion-shaped chiral nanoparticles with threefold rotational symmetry.
- Subjects
ROTATIONAL symmetry; PLASMONICS; GOLD nanoparticles; NANOPARTICLES; SEED yield; NANOPARTICLE size
- Publication
Nature Communications, 2023, Vol 14, Issue 1, p1
- ISSN
2041-1723
- Publication type
Article
- DOI
10.1038/s41467-023-39456-8