2009/08/25 by M. Marksteiner, Markus Marksteiner, Philipp Haslinger +7 · 28 citations
Chemistry · Physics and Astronomy · #Atomic and Molecular Physics #Ion #Ionization #Ionization energy #Laser-Matter Interactions and Applications #Mass Spectrometry Techniques and Applications #Photoionization #Photon #Radiation #Ultraviolet #Vacuum ultraviolet #physics.atm-clus
paper · pdf · doi:10.1021/jp905039f
published in The Journal of Physical Chemistry A 113(37), 9952-9957 (American Chemical Society) · 6 pages, 8 figures
openalex publication_date 2009/08/25 · arxiv created 2014/02/10 · arxiv updated 2014/02/12 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The generation of organic particle beams is studied in combination with photoionization using UV radiation at 266 nm and vacuum ultraviolet (VUV) light at 157 nm. Single-photon ionization with pulsed VUV light turns out to be sensitive enough to detect various large neutral biomolecular complexes ranging from metal-amino acid complexes to nucleotide clusters and aggregates of polypeptides. Different biomolecular clusters are shown to exhibit rather specific binding characteristics with regard to the various metals that are codesorbed in the source. We also find that the ion signal of gramicidin can be increased by a factor of 15 when the photon energy is increased from 4.66 to 7.9 eV.