Abstract
We study the effect of chromophore orientation on the enhancement of plasmon-coupled resonance energy transfer (PC-RET) rates in three systems: a donor-acceptor pair above a bulk gold surface, on opposite sides of a spherical gold nanoparticle, and within a cylindrical waveguide. Employing theoretical and numerical methods, we evaluate RET rate enhancements relative to vacuum rates and derive analytical relationships between system parameters. Our results reveal, for shorter intermediate-range separations, a consistent and dramatic enhancement of RET when the donor-acceptor pair are oriented at approximately 60° with respect to their separation vector, across all three systems. Using quasi-static approximations, we uncover additional nontrivial regimes of enhancement related to chromophore orientation and separation distance. Notably, in the waveguide system, we observe mode-specific RET enhancements. These findings highlight the importance of chromophore orientation in PC-RET and provide insights for optimizing energy transfer near inhomogeneous, dispersive, and absorbing bodies, aiding the development of advanced light-harvesting technologies.
Original language | English (US) |
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Pages (from-to) | 4506-4516 |
Number of pages | 11 |
Journal | Journal of Physical Chemistry C |
Volume | 129 |
Issue number | 9 |
DOIs | |
State | Published - Mar 6 2025 |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- General Energy
- Physical and Theoretical Chemistry
- Surfaces, Coatings and Films