Strong coupling with light enhances the photoisomerization quantum yield of azobenzene

Abstract

The strong coupling between molecules and photons in resonant cavities offers a new toolbox to manipulate photochemical reactions. While the quenching of photochemical reactions in the strong coupling regime has been demonstrated before, their enhancement has proven to be more elusive. By means of a state-of-the-art approach, here we show how the \iso{trans}{cis} photoisomerization quantum yield of azobenzene embedded in a realistic environment can be higher in polaritonic conditions than in the cavity-free case. We characterize the mechanism leading to such enhancement and discuss the conditions to push the photostationary state towards the unfavoured reaction product. Our results provide a signature that the control of photochemical reactions through strong coupling can be extended from selective quenching to improvement of the quantum yields

Final accepted version. Final published version is available at https://doi.org/10.1016/j.chempr.2019.11.001

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• Canonical sampling through velocity-rescaling
• Coherent coupling of single molecules to on-chip ring resonators
• Lasing by driven atoms-cavity system in collective strong coupling regime

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