Journal
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
Volume 12, Issue 46, Pages 11444-11459Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpclett.1c03183
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Funding
- Gordon and Betty Moore Foundation [GBMF7114]
- European Union [799408]
- Marie Curie Actions (MSCA) [799408] Funding Source: Marie Curie Actions (MSCA)
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This perspective focuses on the collective aspects of strongly coupled molecular systems and their dynamical response, discussing the energy transfer pathways from polariton states to other molecular states. Pump-probe spectroscopy can reveal these pathways, while analyzing the free energy structure in molecular polariton systems may offer new clues into energy flow and how strong coupling can be utilized.
Molecular polaritons are hybrid states of photonic and molecular character that form when molecules strongly interact with light. Strong coupling tunes energy levels and, importantly, can modify molecular properties (e.g., photoreaction rates), opening an avenue for novel polariton chemistry. In this Perspective, we focus on the collective aspects of strongly coupled molecular systems and how this pertains to the dynamical response of such systems, which, though of key importance for attaining modified function under polariton formation, is still not well-understood. We discuss how the ultrafast time and spectral resolution make pump-probe spectroscopy an ideal tool to reveal the energy-transfer pathways from polariton states to other molecular states of functional interest. Finally, we illustrate how analyzing the free (rather than electronic) energy structure in molecular polariton systems may provide new clues into how energy flows and thus how strong coupling may be exploited.
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