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Updated: Jun 9, 2026

Single-Molecule Förster Resonance Energy Transfer Methods for Real-Time Investigation of the Holliday Junction Resolution by GEN1
Published on: September 18, 2019
Accelerated hole transfer across a molecular double barrier.
David Hanss1, Mathieu E Walther, Oliver S Wenger
1Department of Inorganic, Analytical and Applied Chemistry, University of Geneva, 30 quai Ernest-Ansermet, CH-1211, Geneva, Switzerland.
Photoinduced hole transfer is significantly faster across non-uniform molecular double barriers compared to uniform ones. This finding advances understanding of charge transport in molecular systems.
Area of Science:
- Molecular electronics
- Charge transport phenomena
Background:
- Understanding charge transfer is crucial for molecular electronics.
- Molecular double barriers present unique transport characteristics.
Purpose of the Study:
- To investigate and compare the efficiency of photoinduced hole transfer through uniform versus non-uniform molecular double barriers.
Main Methods:
- Fabrication of molecular dyads with double barrier structures.
- Utilizing photoinduced techniques to initiate and measure hole transfer rates.
Main Results:
- Observed hole transfer rates exceeding uniform barriers by over an order of magnitude.
- Demonstrated the significant impact of barrier non-uniformity on charge mobility.
Conclusions:
- Non-uniform molecular double barriers facilitate significantly enhanced photoinduced hole transfer.
- This work provides insights into designing efficient molecular electronic components.
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