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Updated: Jan 15, 2026

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
Published on: April 10, 2018
Excited State Dynamics of CO2 Reduction Catalyst under Vibrational Strong Coupling
Tao Jin1, Sara T Gebre2, Christopher J Miller3
1Department of Physics, Emory University, 1515 Dickey Drive, Northeast, Atlanta, Georgia 30322, United States.
Vibrational strong coupling (VSC) did not significantly alter the dynamic Stokes shift of CO modes in a Re(bpy-COOH)(CO)3Cl complex. This study explored polariton effects on molecular excited-state dynamics using transient IR spectroscopy.
Area of Science:
- Physical Chemistry
- Spectroscopy
- Quantum Optics
Background:
- Molecular polaritons, formed by strong coupling between molecular transitions and optical cavities, offer new ways to control chemical dynamics.
- Vibrational strong coupling (VSC) is a key phenomenon in manipulating molecular properties via light-matter interactions.
Purpose of the Study:
- To investigate the impact of VSC on solvation-induced time-dependent Stokes shifts.
- To probe the excited-state dynamics of Re(bpy-COOH)(CO)3Cl (ReC0A) complex under VSC conditions.
- To explore polariton dynamics and their influence on molecular processes.
Main Methods:
- Transient infrared (IR) transmission spectroscopy.
- Angle-resolved time-dependent transmission spectra of vibrational polaritons.
- Fabry-Perot microcavity setup.
- Time-dependent excited-state absorption modeling.
Main Results:
- Distinct infrared polaritonic signatures of the CO dynamical Stokes shift were observed.
- Negligible changes in the solvation-induced vibrational dynamic Stokes shift of CO modes were found under VSC.
- Perturbed free induction decay was analyzed in relation to polariton dynamics.
Conclusions:
- VSC has minimal effect on the solvation-induced dynamic Stokes shift of CO modes in the studied complex.
- The experimental setup provides a platform for probing fundamental VSC effects on molecular reactivity and charge transfer.
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