This review discusses how ultrafast organic photochemical reactions are controlled by conical intersections, highlighting that decay to the ground-state at multiple points of the intersection space results in their multi-mode character.
o-DCSP exhibits AIE, showing no fluorescence in its monomeric form but bright orange emission when aggregated. In contrast, i-DCSP displays consistent blue-white fluorescence in both monomeric and aggregated states.
The photochemistry of cyclopentadiene is investigated using nonadiabatic dynamics simulations. Observables for ultrafast X-ray scattering experiments are predicted and mapped onto the structural dynamics.
Ultrafast dynamics of internal conversion from higher-lying electronic states to S1 are governed by the details of potential energy landscape and by the locations of the Franck–Condon point, energy minima, and minimum-energy conical intersections.
The photoisomerisation process in the PSB3 model system was studied with the DD-vMCG method in full dimensionality on potential energy surfaces computed on-the-fly using the SA(2)-CAS(6,6)SCF/6-31G electronic structure method.