This talk will present data showing a previously unresolved eigenstate in TIPS-pentacene microcrystals that is created by a non-equilibrium packed geometry. The eigenstate was identified via cross peaks in 2D White-Light spectra and the population of the molecular geometry mapped using broadband transient absorption spectroscopy. Modeling is consistent with strong charge transfer couplings creating a low energy eigenstate. The technological developments that make possible these measurements will be described and the impact of this eigenstate on triplet populations discussed.

Non-equilibrium crystal geometries involved in singlet fission visualized with ultrafast 2D white-light microscopy

2019 Fall National Meeting

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