Conical Intersection-Mediated Nonradiative Decay in an ESIPT-Active Imidazole Derivative.
Excited-state intramolecular proton transfer (ESIPT) is a photoinduced process that involves proton migration within an intramolecular hydrogen-bonded framework following electronic excitation and is often associated with large Stokes-shifted emission. However, the excited-state fate after proton transfer is not exclus...