Vacuum Ultraviolet Photoionization of Complex Chemical Systems

• DOI: 10.1146/annurev-physchem-040215-112553
• Publication Date: 2016-03-16T00:19:31Z
• Authors: Oleg Kostko; Biswajit Bandyopa...; Musahid Ahmed
• Keywords: Chemical Physics; proton transfer; 540; electronic structure; Physical Chemistry; 01 natural sciences; 0104 chemical sciences; Physical chemistry; Theoretical and Computational Chemistry; Theoretical and computational chemistry; Chemical Sciences; synchrotron; hydrogen bonds; laser ablation; thermochemistry; mass spectrometry; combustion; Physical Chemistry (incl. Structural)

Tunable vacuum ultraviolet (VUV) radiation coupled to mass spectrometry is applied the study of complex chemical systems. The identification novel reactive intermediates and radicals revealed in flame, pulsed photolysis, pyrolysis reactors, leading elucidation spectroscopy, reaction mechanisms, kinetics. Mass-resolved threshold photoelectron photoion coincidence measurements provide unprecedented access vibrationally resolved spectra free present high-temperature reactors. Photoionization water clusters, nucleic acid base dimers, their complexes with signatures proton transfer hydrogen-bonded π-stacked Experimental theoretical methods track ion-molecule reactions fragmentation pathways intermolecular intramolecular systems sugars alcohols are described. laser-ablated molecules, products inform thermodynamics spectroscopy that relevant astrochemistry catalysis. New directions coupling VUV interrogate discussed.