Two-Dimensional Excitonic Networks Directed by DNA Templates as an Efficient Model Light-Harvesting and Energy Transfer System

Xu Zhou, Deeksha Satyabola, Hao Liu, Shuoxing Jiang, Xiaodong Qi, Lu Yu, Su Lin, Yan Liu, Neal W. Woodbury, Hao Yan

Research output: Contribution to journalArticlepeer-review

Abstract

Photosynthetic organisms organize discrete light-harvesting complexes into large-scale networks to facilitate efficient light collection and utilization. Inspired by nature, herein, synthetic DNA templates were used to direct the formation of dye aggregates with a cyanine dye, K21, into discrete branched photonic complexes, and two-dimensional (2D) excitonic networks. The DNA templates ranged from four-arm DNA tiles, ≈10 nm in each arm, to 2D wireframe DNA origami nanostructures with different geometries and varying dimensions up to 100×100 nm. These DNA-templated dye aggregates presented strongly coupled spectral features and delocalized exciton characteristics, enabling efficient photon collection and energy transfer. Compared to the discrete branched photonic systems templated on individual DNA tiles, the interconnected excitonic networks showed approximately a 2-fold increase in energy transfer efficiency. This bottom-up assembly strategy paves the way to create 2D excitonic systems with complex geometries and engineered energy pathways.

Original languageEnglish (US)
Article numbere202211200
JournalAngewandte Chemie - International Edition
Volume61
Issue number51
DOIs
StatePublished - Dec 19 2022
Externally publishedYes

Keywords

  • DNA Nanotechnology
  • Dyes/Pigments
  • Excitonic Network
  • Light-Harvesting Antenna
  • Self-Assembly

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

Fingerprint

Dive into the research topics of 'Two-Dimensional Excitonic Networks Directed by DNA Templates as an Efficient Model Light-Harvesting and Energy Transfer System'. Together they form a unique fingerprint.

Cite this