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Gold-Nanoparticle-Based Chiral Plasmonic Nanostructures and Their Biomedical Applications
Hanbo Li1,2, Xinshuang Gao1,2, Chenqi Zhang1,2
1CAS Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, Beijing 100190, China.
Biosensors
|November 10, 2022
Summary
Chiral plasmonic nanoparticles (NPs) enhance chiral material responses and have biomedical applications. This review covers synthesis and self-assembly of gold NPs for tunable chiroptical properties and advanced biomedical uses.
Area of Science:
- Nanotechnology
- Plasmonics
- Chiroptics
Background:
- Plasmonic nanoparticles (NPs) act as chiral antennas, enhancing the chirality of materials.
- Chirality-dependent properties of plasmonic NPs offer broad potential in biomedical applications.
- Chiral nanostructures are crucial for advanced optical and biomedical technologies.
Purpose of the Study:
- To review wet-chemical synthesis and self-assembly fabrication of gold-NP-based chiral nanostructures.
- To highlight advances in designing and synthesizing chiral nanostructures for tunable plasmonic circular dichroism.
- To discuss emerging trends in biomedical applications of chiral nanostructures.
Main Methods:
- Seed-mediated growth of achiral gold NPs guided by chiral molecules.
- Controlled synthesis using chiral light irradiation during NP growth.
- Bottom-up assembly of achiral gold NPs using chiral linkers or templates.
Main Results:
- Discrete chiral NPs synthesized via chiral molecule-guided growth.
- Chiral assemblies fabricated with large chiroplasmonic activities.
- Tuning and amplification of plasmonic circular dichroism responses achieved.
Conclusions:
- Gold-NP-based chiral nanostructures offer tunable chiroptical properties.
- These nanostructures show significant promise for biomedical applications.
- Further research into synthesis and applications is warranted.
