DNA Programmable Self-Assembly of Planar, Thin-Layered Chiral Nanoparticle Superstructures with Complex Two-Dimensional Patterns

Yan Liu, Li Ma, Shuoxing Jiang, Cong Han, Pan Tang, Hao Yang, Xiaoyang Duan, Na Liu, Hao Yan, Xiang Lan

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Planar, thin-layered chiral plasmonic superstructures with complex two-dimensional (2D) patterns, namely, double-layered binary stars (bi-stars) and pinwheels, were realized through DNA programmable 2D supramolecular self-assembly of gold nanorods (AuNRs). The chirality of the chiral superstructures was defined by a finite number of AuNR pairs as enantiomeric motifs, and their sizes (∼240 nm) were precisely defined by the underlying DNA template. These planar, thin-layered chiral nanoparticle superstructures exhibited prescribed shapes and sizes at the dried state on the substrate surface and are characteristic of giant anisotropy of chiroptical responses, with enhanced g-factors from the axial incident excitation as compared to the in-plane excitation. This work will inspire possibilities for the construction of 2D chiral materials, for example, chiral metasurfaces, for the on-chip manipulation of chiral light-matter interactions via programmable self-assembly of nanoparticles.

Original languageEnglish (US)
Pages (from-to)16664-16672
Number of pages9
JournalACS nano
Volume15
Issue number10
DOIs
StatePublished - Oct 26 2021
Externally publishedYes

Keywords

  • DNA self-assembly
  • chiral plasmonics
  • g-factor
  • gold nanorods
  • thin-layered chiral superstructure

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)
  • Physics and Astronomy(all)

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