Reference : Electronic spectroscopy of nucleic acids in the gas phase
Scientific congresses and symposiums : Unpublished conference
Physical, chemical, mathematical & earth Sciences : Chemistry
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/2268/84524
Electronic spectroscopy of nucleic acids in the gas phase
English
Gabelica, Valérie mailto [Université de Liège - ULg > Département de chimie (sciences) > GIGA-R : Laboratoire de spectrométrie de masse (L.S.M.) >]
Rosu, Frédéric [Université de Liège - ULg > Département de chimie (sciences) > GIGA-R : Laboratoire de spectrométrie de masse (L.S.M.) >]
Joly, Laure mailto [Université de Liège - ULg > Département de chimie (sciences) > Chimie analytique inorganique >]
De Pauw, Edwin mailto [Université de Liège - ULg > Département de chimie (sciences) > GIGA-R : Laboratoire de spectrométrie de masse (L.S.M.) >]
Matheis, Katerina [Karlsruher Institut für Technologie (KIT), Institute of Physical Chemistry, Karlsruhe, 76131, Germany > > > >]
Kappes, Manfred M. [Karlsruher Institut für Technologie (KIT), Institute of Physical Chemistry, Karlsruhe, 76131, Germany > > > >]
Giuliani, Alexandre [Synchrotron Soleil, Gif-sur-Yvette, 91192, France > > > >]
Miloslavljevic, Alexandar [Synchrotron Soleil, Gif-sur-Yvette, 91192, France > > > >]
Refregiers, Matthieu [Synchrotron Soleil, Gif-sur-Yvette, 91192, France > > > >]
Nahon, Laurent [Synchrotron Soleil, Gif-sur-Yvette, 91192, France > > > >]
Antoine, Rodolphe [University Lyon 1, Laboratory of Molecular and Ionic Spectroscopy (LASIM), Villeurbanne, 69622, France > > > >]
Dugourd, Philippe [University Lyon 1, Laboratory of Molecular and Ionic Spectroscopy (LASIM), Villeurbanne, 69622, France > > > >]
2010
No
Yes
International
240th ACS National Meeting
August 22-26, 2010
ACS, PHSY division, J. Matthias Weber & Jack Simons
Boston
USA
[en] mass spectrometry ; DNA ; spectroscopy ; electronic ; electron ; photodetachment ; synchrotron ; photodissociation ; MS/MS
[en] DNA polyanions trapped in a mass spectrometer undergo electron detachment following UV irradiation. Photodetachment is a single-photon process. Its efficiency depends on the nature of the DNA bases, the ion's charge, and the excitation wavelength. Photodetachment can therefore be used to perform ion spectroscopy experiments, which probe electronic excitation within the initial charge state of the nucleic acids. Ion spectroscopy experiments on trapped nucleic acid cations and anions were performed from 4 to 20 eV using an OPO laser or using synchrotron radiation. Photoelectron spectroscopy experiments were also performed on multiply charged anions to probe direct detachment cross sections and electronic excitations within the final charge. The electronic spectra obtained from photodetachment integral cross sections show several resonances, provided that the photon energy is larger than the electron binding energy. We will also discuss whether the electronic spectra obtained via photodetachment can be used to probe gas phase ion structure.
Giga-Systems Biology and Chemical Biology
Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS
Researchers
http://hdl.handle.net/2268/84524
also: http://hdl.handle.net/2268/124626

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