title: Exploring the mechanism of IR-UV double-resonance for quantitative spectroscopy of protonated polypeptides and proteins.
abstract: Spectroscopic fingerprint: Infrared–ultraviolet double resonance photodissociation is used for conformational assignment of the electronic spectra of a cold protonated decapeptide (see picture). A mechanism of the IR–UV depletion spectroscopy is proposed and a procedure of using it for measurements of absolute absorption cross-sections of vibrational transitions is elaborated.
authors.affiliation: Laboratoire de Chimie Physique Moléculaire, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland.
authors.forename: Natalia S
authors.initials: NS
authors.lastname: Nagornova
authors.forename: Thomas R
authors.initials: TR
authors.lastname: Rizzo
authors.forename: Oleg V
authors.initials: OV
authors.lastname: Boyarkin
mesh_terms: D008968:Molecular Conformation; D010455:Peptides / Q000737:chemistry*; D011506:Proteins / Q000737:chemistry*; D011522:Protons; D013055:Spectrophotometry, Infrared / Q000379:methods; D013056:Spectrophotometry, Ultraviolet / Q000379:methods; D013057:Spectrum Analysis
chemical_list: D010455:Peptides; D011506:Proteins; D011522:Protons