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Discriminatory Resonance Energy Transfer Mediated by a Third Molecule
1Department of Chemistry, Wake Forest University, Winston-Salem, North Carolina 27109, United States.
The Journal of Physical Chemistry. A
|February 17, 2021
Summary
Energy transfer between chiral molecules mediated by a third particle is possible via a single virtual photon. This discriminatory resonant energy transfer mechanism depends on molecular chirality and geometry.
Area of Science:
- Quantum Electrodynamics
- Physical Chemistry
- Spectroscopy
Background:
- Chiral molecules possess unique optical properties.
- Energy transfer mechanisms are crucial in photochemistry and materials science.
- Understanding mediated energy transfer is key to controlling molecular interactions.
Purpose of the Study:
- To investigate resonant energy transfer between two chiral molecules mediated by an inert third particle.
- To analyze the influence of molecular chirality and geometry on the energy transfer rate.
- To compare indirect mediated transfer with direct transfer mechanisms.
Main Methods:
- Utilizing molecular quantum electrodynamics theory.
- Employing fourth-order diagrammatic time-dependent perturbation theory.
- Applying the Fermi golden rule to calculate rate terms.
Main Results:
- A single virtual photon mediates the energy transfer.
- The mediated energy transfer rate is discriminatory, depending on donor and acceptor chirality.
- The rate exhibits an inverse-square dependence on interparticle separation for freely tumbling particles.
- Maximum transfer occurs in a collinear geometry, vanishing at 90°.
Conclusions:
- Mediated resonant energy transfer is a viable mechanism for chiral molecules.
- The process is sensitive to molecular chirality and spatial arrangement.
- This study provides insights into discriminatory energy migration in dielectric media.
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