Presentation Information
[8p-N204-11]Control of molecular dynamics and chemical processes under strong and weak coupling regimes
〇Kosei Ueno1, Sarasa Kano2, Shimba Ushikoshi2, Hiroki Takeuchi2, Keisuke Imaeda1, Sou Ryuzaki1 (1.SCI, Hokkaido Univ., 2.CSE, Hokkaido Univ.)
Keywords:
Relaxation dynamics,Weak coupling conditions,Coherent vibration measurement
In recent years, significant progress has been made in exploring strong light–matter interactions between optical cavities or localized surface plasmons and the electronic or vibrational states of molecules, opening up a new paradigm for controlling chemical reactivity. This interdisciplinary field, known as polaritonic chemistry, has garnered attention for its potential to enable quantum-level control over reaction pathways and charge transport properties. We have proposed that, in addition to the Purcell effect—which modulates the spontaneous emission rate—the coherent quantum states intrinsic to strongly coupled light–matter hybrid systems may fundamentally influence photochemical processes and dynamics. However, despite the focus of many previous studies on the strong coupling regime, a persistent challenge lies in the requirement for high molecular concentrations, which hinders the quantitative elucidation of the underlying physico-chemical mechanisms. To address this, we are conducting research under weak coupling conditions, which allow for lower molecular concentrations, aiming to achieve a comprehensive understanding of how light–matter interactions affect molecular dynamics and chemical reactions. This study aims to control molecular dynamics and chemical processes under both strong and weak coupling regimes.