European XFEL Achieves Atom-by-Atom Observation of Chemical Reactions

Researchers at the European XFEL have successfully monitored light-induced chemical processes occurring at the atomic level through time-resolved X-ray photoelectron spectroscopy. The investigation focused on the molecular changes in 3-fluoropyridine over mere picoseconds, highlighting that nitrogen and fluorine atoms experience distinct phases of electronic and structural transformation. These insights may enhance the understanding of DNA's resilience to light-induced damage, the development of energy-absorbing materials, and advancements in photochemistry. This innovative method provides a groundbreaking approach to examine ultrafast molecular dynamics with unmatched atomic resolution.