.png){kind=icon}
.png){kind=icon}
Return
The role of IR inactive mode in W(CO)6 polariton relaxation process
.png){kind=icon}
OA
AI
O
H
熊
DOI：10.1515/nanoph-2023-0589.png)
.png){kind=icon}
.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
Vibrational polaritons have shown potential in influencing chemical reactions, but the exact mechanism by which they impact vibrational energy redistribution, crucial for rational polariton chemistry design, remains unclear. In this work, we shed light on this aspect by revealing the role of solvent phonon modes in facilitating the energy relaxation process from the polaritons formed of a T-1u mode of W(CO)(6) to an IR inactive E-g mode. Ultrafast dynamic measurements indicate that along with the direct relaxation to the dark T-1u modes, lower polaritons also transition to an intermediate state, which then subsequently relaxes to the T-1u mode. We reason that the intermediate state could correspond to the near-in-energy Raman active E-g mode, which is populated through a phonon scattering process. This proposed mechanism finds support in the observed dependence of the IR-inactive state's population on the factors influencing phonon density of states, e.g., solvents. The significance of the Raman mode's involvement emphasizes the importance of non-IR active modes in modifying chemical reactions and ultrafast molecular dynamics.
Keywords:
polariton
ultrafast dynamics
phonon assisted
vibrational strong coupling
AI Summary
Key information extracted from the uploaded paper, including a brief overview, abstract, background, key highlights, visual analysis, and future outlook.
