Conspectus Photochemical reactions are increasingly being used for chemical and
materials synthesis, for example, in photoredox catalysis, and generally involve …

Coulomb explosion imaging (CEI) methods are finding ever-growing use as a means of
exploring and distinguishing the static stereo-configurations of small quantum systems …

Singlet fission in organic semiconductors causes a singlet exciton to decay into a pair of
triplet excitons and holds potential for increasing the efficiency of photovoltaic devices. In …

Investigations of the spectroscopy and dynamics of small-and medium-sized molecules and
clusters represent a hot topic in atmospheric chemistry, biology, physics, atto-and femto …

The photochemical decarboxylation of carboxylic acids is a versatile route to free radical
intermediates for chemical synthesis. However, the sequential nature of this multi-step …

The dynamics of chemical reactions in liquid solutions are now amenable to direct study
using ultrafast laser spectroscopy techniques and advances in computer simulation …

Coherence can drive wave-like motion of electrons and nuclei in photoexcited systems,
which can yield fast and efficient ways to exert materials' functionalities beyond the …

Rate dispersion is commonly observed when measuring relaxation in complex media such
as solution of a protein. Its origin is often associated to molecular heterogeneity in the …

Exciting a molecule with an ultraviolet photon often leads to bond fission, but the final
outcome of the bond cleavage is typically both molecule and phase dependent. The …

We present a systematic study of the mode-specific vibrational relaxation of NO2 in six
weakly-interacting solvents (perfluorohexane, perfluoromethylcyclohexane …