Photoelectron spectrum and breakdown diagram of ethanolamine: conformers, excited states, and thermochemistry.

Advanced theoretical methodologies and photoelectron photoion coincidence spectroscopy were used to investigate the photoionization of ethanolamine in the 8-18 eV energy range. We identified the low-lying cation conformers and the excited cation electronic states after vertical excitation from the most stable neutral conformer computationally. The TPES is composed of broad, structureless bands because of unfavorable Franck-Condon factors for origin transitions upon ionization, populating the D-D cationic states from the most stable neutral conformer, g'Gg'.