Harnessing Exciton Flux With a Single-Stranded DNA-Programmed Nanodevice
Mulin Duan1, Yan Zhou1, Haoran Zheng1
1State Key Laboratory of Synergistic Chem-Bio Synthesis, School of Chemistry and Chemical Engineering, New Cornerstone Science Laboratory, Frontiers Science Center for Transformative Molecules and National Center for Translational Medicine, Shanghai Jiao Tong University, Shanghai, China.
Angewandte Chemie (International Ed. in English)
|February 4, 2026
Summary
Researchers developed a DNA-nanodevice for efficient energy transfer. This breakthrough uses asymmetric π-π interactions and DNA spatial confinement for precise control in nanodevices.
Area of Science:
- Nanotechnology
- Biophysics
- Materials Science
Background:
- Nanosystems require functional module assembly.
- Thermodynamic incompatibility hinders precise nanodevice integration.
Purpose of the Study:
- To construct a single-stranded DNA (ssDNA)-directed nanodevice for efficient energy transduction.
- To overcome challenges in atomically precise nanodevice integration.
Main Methods:
- Utilized ssDNA-directed self-assembly for nanodevice construction.
- Harnessed asymmetric π-π interactions within DNA spatial confinement to split exciton energy levels.
- Engineered a nanodevice with a light-harvesting engine, vibrational metal nanocluster actuator, and programmable ssDNA.
Main Results:
- Achieved 94.3% quenching efficiency through controlled exciton energy level splitting.
- Demonstrated DNA spatial confinement orchestrating hydrophobic, covalent, and π-π interactions for precise arrangement.
- Showcased continuous control over energy transfer efficiency by tuning DNA length and nanocluster ligands.
Conclusions:
- Established vibrational control as a general paradigm for nanoscale energy transduction.
- Developed a programmable platform manipulating non-radiative decay via π-π interactions.
- Enabled precise component arrangement and enthalpy-driven switching between radiative and non-radiative pathways.
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