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Related Experiment Video

Updated: Nov 17, 2025

Assembly of Gold Nanorods into Chiral Plasmonic Metamolecules Using DNA Origami Templates
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Assembly of Gold Nanorods into Chiral Plasmonic Metamolecules Using DNA Origami Templates

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Discrete metal nanoparticles with plasmonic chirality.

Guangchao Zheng1, Jijun He, Vished Kumar

  • 1School of Physics and Microelectronics, Zhengzhou University, Zhengzhou, 450001, P. R. China.

Chemical Society Reviews
|February 15, 2021
PubMed
Summary

Chiral metal nanoparticles exhibit unique optical properties due to plasmonic chirality. This review covers their origins, synthesis via wet-chemistry, and applications in sensing and therapies.

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Area of Science:

  • * Nanophotonics and Plasmonics
  • * Materials Science
  • * Physical Chemistry

Background:

  • * Chirality is a geometric property where an object is non-superimposable on its mirror image (enantiomer).
  • * Chirality significantly impacts the optical properties of metal nanoparticles, particularly localized surface plasmon resonance (LSPR).
  • * Inducing chirality in nanoparticles is crucial for manipulating light-matter interactions.

Purpose of the Study:

  • * To review the fundamental principles and origins of plasmonic chirality in metal nanoparticles.
  • * To discuss theoretical models explaining plasmonic chirality.
  • * To summarize recent advancements in synthesizing discrete chiral nanoparticles using wet-chemistry techniques.

Main Methods:

  • * Theoretical modeling of plasmonic chirality.

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  • * Wet-chemistry synthesis of discrete chiral nanoparticles.
  • * Characterization of optical properties and chiroptical activity.

    • Main Results:

    • * Plasmonic chirality arises from specific geometric arrangements or structural features in metal nanoparticles.
    • * Theoretical models successfully explain the origin and behavior of plasmonic chirality.
    • * Wet-chemistry methods enable the controlled synthesis of nanoparticles with tunable plasmonic chirality.

    Conclusions:

    • * Discrete chiral nanoparticles offer unique opportunities for advanced optical applications.
    • * Potential applications include chemical sensing, photocatalysis, and photothermal/photodynamic therapies.
    • * Further research in chiral plasmonics at the nanoparticle level is highly promising across various scientific disciplines.