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Updated: Aug 31, 2025

Single-Molecule F&#246;rster Resonance Energy Transfer Methods for Real-Time Investigation of the Holliday Junction Resolution by GEN1
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Fano Resonance in Single-Molecule Junctions.

Yan Zheng1, Ping Duan1, Yu Zhou1

  • 1State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering and Institute of Artificial Intelligence and Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Xiamen University, Xiamen, 361005, China.

Angewandte Chemie (International Ed. in English)
|August 18, 2022
PubMed
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Researchers observed Fano resonance in single-molecule junctions, enabling electron transport control. This breakthrough in molecular electronics utilizes interference effects for future device designs.

Keywords:
Charge TransferElectrochemical GatingFano ResonanceSingle-Molecule Junctions

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Area of Science:

  • Molecular electronics
  • Quantum interference phenomena
  • Single-molecule junctions

Background:

  • Fano resonance arises from interactions between discrete and continuous molecular orbitals.
  • Direct observation of Fano resonance in single-molecule junctions is challenging due to molecule-electrode coupling.
  • Electron transport modulation is crucial for developing novel electronic devices.

Purpose of the Study:

  • To demonstrate the room-temperature observation of Fano resonance in single-molecule junctions.
  • To investigate the mechanism of Fano resonance in a para-carbazole anion junction.
  • To explore the potential of Fano resonance for designing interference-based electronic devices.

Main Methods:

  • Electrochemical gating of single-molecule junctions.
  • Conductance and current-voltage measurements.
  • Theoretical calculations of molecular orbital interactions.

Main Results:

  • Fano resonance was observed at room temperature in a para-carbazole anion junction.
  • Theoretical calculations confirmed that a localized HOMO interferes with a delocalized LUMO, inducing Fano resonance.
  • The study highlights the role of molecular structure and charge distribution in creating Fano resonance.

Conclusions:

  • The observation of Fano resonance in single-molecule junctions is experimentally demonstrated.
  • Fano resonance can be harnessed for precise control of electron transport.
  • This work paves the way for interference-based molecular electronic devices.