SAMOP 2023 – scientific programme

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MO: Fachverband Molekülphysik

MO 22: Theoretical and Computational Molecular Physics

MO 22.1: Invited Talk

Friday, March 10, 2023, 11:00–11:30, F142

A QED Theory of Mediated RET Between a Pair of Chiral Molecules — •Akbar Salam — Department of Chemistry, Wake Forest University, Winston-Salem, NC 27109, USA

A QED [1] theory of relayed resonance energy transfer (RET) [2] between a pair of identical chiral molecules by one or two neutral, passive, electric dipole polarizable bodies, is developed. Migration of excitation energy occurs via the exchange of a single virtual photon between any two interacting particles. Isotropic Fermi golden rule transfer rates are evaluated for direct and bridge-mediated pathways. Rates from both routes depend on the chirality of the donor and acceptor moieties [3-5]. For conveyance of energy to take place indirectly, a multi-level model must be adopted for each mediator polarizability. Furthermore, the rate is found to be a maximum when the three or four particles are collinear. Useful understanding is achieved of propagation of energy between optically active entities in a medium with uniform dielectric constant [6]. [1]*A. Salam, Molecular Quantum Electrodynamics, John Wiley & Sons, Inc., 2010. [2]*A. Salam, Atoms 6, 56 (2018). [3]*D. P. Craig and T. Thirunamachandran, J. Chem. Phys. 109, 1258 (1998). [4]*A. Salam, J. Phys. Chem. A 125, 3549 (2021). [5]*A. Salam, J. Chem. Phys. 157, 104110 (2022). [6]*J. Franz, S. Y. Buhmann and A. Salam, arXiv:2209.15400 [quant-ph].