DNA-Assembled Chiral Satellite-Core Nanoparticle Superstructures: Two-State Chiral Interactions from Dynamic and Static Conformations

Li Ma, Yan Liu, Cong Han, Artur Movsesyan, Peihang Li, Huacheng Li, Pan Tang, Yongqing Yuan, Shuoxing Jiang, Weihai Ni, Hao Yan, Alexander O. Govorov, Zhiming M. Wang, Xiang Lan

Research output: Contribution to journalArticlepeer-review

Abstract

A significant challenge exists in obtaining chiral nanostructures that are amenable to both solution-phase self-assembly and solid-phase preservation, which enable the observation of unveiled optical responses impacted by the dynamic or static conformation and the incident excitations. Here, to meet this demand, we employed DNA origami technology to create quasi-planar chiral satellite-core nanoparticle superstructures with an intermediate geometry between the monolayer and the double layer. We disentangled the complex chiral mechanisms, which include planar chirality, 3D chirality, and induced chirality transfer, through combined theoretical studies and thorough experimental measurements of both solution- and solid-phase samples. Two distinct states of optical responses were demonstrated by the dynamic and static conformations, involving a split or nonsplit circular dichroism (CD) line shape. More importantly, our study on chiral nanoparticle superstructures on a substrate featuring both a dominant 2D geometry and a defined 3D represents a great leap toward the realization of colloidal chiral metasurfaces.

Original languageEnglish (US)
Pages (from-to)4784-4791
Number of pages8
JournalNano Letters
Volume22
Issue number12
DOIs
StatePublished - Jun 22 2022
Externally publishedYes

Keywords

  • Chiral plasmonic
  • Chirality transfer
  • Circular dichroism
  • DNA assembly
  • Superstructure

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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