Publications (2)1.48 Total impact
Article: Electron photodetachment of trapped doubly deprotonated angiotensin peptides. UV spectroscopy and radical recombination[show abstract] [hide abstract]
ABSTRACT: Trapped doubly deprotonated peptides are subjected to electron detachment when irradiated by a UV light. Electron photodetachment experiments as a function of the laser wavelength and laser fluence have been performed on two variants of angiotensin. The electron detachment yield was used to monitor the excited electronic spectrum of the trapped ions. Furthermore, the electron loss leads to the formation of radical ions. The radical recombination after collision activation is discussed.The European Physical Journal D 04/2012; 51(1):117-124. · 1.48 Impact Factor
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ABSTRACT: In-trap photoinduced electron detachment was performed on negatively charged proteins with molecular weights ranging from 8.6 to 77 kDa. The advantages of photodetachment over photodissociation are discussed in the context of action spectroscopy of very large ions. The resulting gas phase photodetachment yield spectra recorded in the UV range (220-310 nm) are presented and are compared with solution absorption spectra. The important question of the influence of the conformation and charge state of a protein on its optical gas phase spectrum is raised. (C) 2010 Elsevier B.V. All rights reserved.INTERNATIONAL JOURNAL OF MASS SPECTROMETRY. 297(1-3, SI):36-40.