When an ensemble of molecules interacts with the optical modes of a microcavity, the collective excitations of the strongly coupled light-matter (polariton) system are no longer purely molecular nor electromagnetic, but hybrid superpositions of the two. The excited-state spectrum of these polaritonic systems is complex, interpolating between the molecular and the solid-state, as it consists of a macroscopic number of molecules whose molecular dynamics are intertwined with each other. Moreover, at the expense of having these hybrid states, there is a counterpart of dense manifolds of electronic states that coexist in the so-called "dark reservoirs". What is the nature of these dark states and how do we take advantage of them?<br/><br/>In this talk, I will discuss theoretical models on how to harness molecular polaritons to carry out singlet fission, triplet harvesting, and remote control of chemical processes.

Molecules in cavities: Polariton chemistry

2019 Spring National Meeting

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