Fluorescence spectroscopy, one of the most informative and sensitive analytical techniques,
has played and continues to play key roles in modern research. Indeed, unraveling the inner …

The scope of this review is the nature and dynamics of the singlet excited electronic states
created in nucleic acids and their constituents by UV light. Interest in the UV photochemistry …

Radiationless deactivation pathways of excited gas phase nucleobases were investigated
using mass-selected femtosecond resolved pump-probe resonant ionization. By comparison …

Biochemical reactions are subject to the particular environmental conditions of planet earth,
including solar irradiation. How DNA responds to radiation is relevant to human health …

The electronically excited singlet states of uracil have been studied theoretically using ab
initio multireference configuration interaction methods focusing on the mechanism for …

The DNA base adenine and four monomethylated adenines were studied in solution at room
temperature by femtosecond pump− probe spectroscopy. Transient absorption at visible …

We present R2PI spectra of a series of purine nucleobases, nucleosides, and related
derivatives, including adenine, guanine, guanosine, 2-aminopurine, 2, 6-diaminopurine, 9 …

An ab initio theoretical study at the CASPT2 level is reported on minimum energy reaction
paths, state minima, transition states, reaction barriers, and conical intersections on the …

The involvement of three-state conical intersections in the photophysics and radiationless
decay processes of the nucleobases has been investigated using multireference …

The availability of non-radiative decay mechanisms by which photoexcited molecules can
revert to their ground electronic state, without experiencing potentially deleterious chemical …