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Modeling light-matter interactions : from fundamental processes to polariton chemistry / Tao Li.
- Format:
- Book
- Thesis/Dissertation
- Author/Creator:
- Li, Tao, author.
- Language:
- English
- Subjects (All):
- Chemistry.
- Physical chemistry.
- Causality.
- Energy conservation.
- Radiation.
- Chemistry--Penn dissertations.
- Penn dissertations--Chemistry.
- Local Subjects:
- Chemistry.
- Physical chemistry.
- Causality.
- Energy conservation.
- Radiation.
- Chemistry--Penn dissertations.
- Penn dissertations--Chemistry.
- Genre:
- Academic theses.
- Physical Description:
- 1 online resource (281 pages)
- Contained In:
- Dissertations Abstracts International 83-03B.
- Place of Publication:
- [Philadelphia, Pennsylvania] : University of Pennsylvania ; Ann Arbor : ProQuest Dissertations & Theses, 2021.
- Language Note:
- English
- System Details:
- Mode of access: World Wide Web.
- text file
- Summary:
- Light-matter interactions are fundamentally important in chemistry. While traditional theory usually treats light as an external perturbation on the molecular system, this dissertation emphasizes the significance of self-consistently propagating the coupled dynamics between an electromagnetic field and molecules. The first part of this dissertation focuses on benchmarking conventional semiclassical electrodynamics scheme and extending state-of-art mixed quantum-classical algorithms on modeling fundamental light-matter processes, including spontaneous emission, energy transfer, and collective emission. The second part of this dissertation introduces a novel numerical approach-classical cavity molecular dynamics (CavMD)-for simulating vibrational strong light-matter interactions when a large collection of realistic molecules in the condensed phase are confined in an optical cavity. In this vibrational strong coupling regime, CavMD recovers Rabi splitting in the equilibrium infrared (IR) spectroscopy, reveals the mechanism of vibration-polariton (hybrid light-matter state) relaxation and polariton-enhanced molecular nonlinear absorption, and demonstrates the cavity effects on vibrational relaxation and energy transfer in the absence of external polariton pumping-most of these findings are consistent with experiments. Finally, CavMD also predicts an intriguing energy transfer pathway: by exciting a vibrational polariton of the solvent molecules with an intense IR laser, the input energy may selectively transfer and highly excite the solute molecules; outside the cavity the same pulse fluence can only weakly excite the solute molecules and the selectivity is low. This mechanism, which requires experimental verification, could possibly lead to selective catalysis of ground-state chemical reactions in the condensed phase using an IR laser.
- Notes:
- Source: Dissertations Abstracts International, Volume: 83-03, Section: B.
- Advisors: Subotnik, Joe; Committee members: Nitzan, Abe; Lester, Marsha; Fakhraai, Zahra.
- Department: Chemistry.
- Ph.D. University of Pennsylvania 2021.
- Local Notes:
- School code: 0175
- ISBN:
- 9798535570723
- Access Restriction:
- Restricted for use by site license.
- This item must not be sold to any third party vendors.
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