DNA nanotechnology-enabled chiral plasmonics: from static to dynamic

TL;DR

This paper reviews the development of static and dynamic chiral plasmonic nanostructures enabled by DNA nanotechnology, highlighting design strategies and mechanisms for enhanced optical responses.

Contribution

It provides a comprehensive overview of static and dynamic DNA-based chiral plasmonic nanostructures, emphasizing recent advances and mechanisms.

Findings

Design of chiral plasmonic nanostructures with gold nanoparticles and nanorods.

Transition from static to dynamic plasmonic systems.

Mechanistic understanding of dynamic plasmonic responses.

Abstract

In this Account, we discuss a variety of static and dynamic chiral plasmonic nanostructures enabled by DNA nanotechnology. In the category of static plasmonic systems, we first show chiral plasmonic nanostructures based on spherical AuNPs, including plasmonic helices, toroids, and tetramers. To enhance the CD responses, anisotropic gold nanorods with larger extinction coefficients are utilized to create chiral plasmonic crosses and helical superstructures. Next, we highlight the inevitable evolution from static to dynamic plasmonic systems along with the fast development of this interdisciplinary field. Several dynamic plasmonic systems are reviewed according to their working mechanisms.