title: Comparing Vacuum and Extreme Ultraviolet Radiation for Postionization of Laser Desorbed Neutrals from Bacterial Biofilms and Organic Fullerenes.
abstract: Vacuum and extreme ultraviolet radiation from 8 - 24 eV generated at a synchrotron was used to postionize laser desorbed neutrals of antibiotic-treated biofilms and a modified fullerene using laser desorption postionization mass spectrometry (LDPI-MS). Results show detection of the parent ion, various fragments, and extracellular material from biofilms using LDPI-MS with both vacuum and extreme ultraviolet photons. Parent ions were observed for both cases, but extreme ultraviolet photons (16 - 24 eV) induced more fragmentation than vacuum ultraviolet (8 - 14 eV) photons.
authors.affiliation: Department of Chemistry, University of Illinois at Chicago, 845 W. Taylor Street (m/c 111), Chicago, IL 60607, USA.
authors.forename: Gerald L
authors.initials: GL
authors.lastname: Gasper
authors.forename: Lynelle K
authors.initials: LK
authors.lastname: Takahashi
authors.forename: Jia
authors.initials: J
authors.lastname: Zhou
authors.forename: Musahid
authors.initials: M
authors.lastname: Ahmed
authors.forename: Jerry F
authors.initials: JF
authors.lastname: Moore
authors.forename: Luke
authors.initials: L
authors.lastname: Hanley