Electron photodetachment from gas phase peptide dianions. Relation with optical absorption properties

The Journal of Physical Chemistry. a
Laure JolyPhilippe Dugourd

Abstract

Electron detachment from peptide dianions is studied as a function of the laser wavelength. The first step for the detachment is a resonant electronic excitation of the dianions. Electronic excitation spectra are reported for three peptides, including gramicidin. A comparative study of the detachment yield for 13 peptides was performed at 260 nm and at 220 nm. At 260 nm, the detachment yield is mainly driven by the sum of the absorption coefficients of the aromatic amino acids that are contained in the peptide. At 220 nm, no direct relation is observed between the electron photodetachement yields and the sum of absorption efficiencies. At this wavelength, the sequence and the structure of the peptide may have an influence on the photodetachment process.

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Citations

Nov 16, 2011·Journal of the American Society for Mass Spectrometry·Claire BrunetLaurent Nahon
Jun 1, 2013·Journal of the American Society for Mass Spectrometry·Quentin EnjalbertLaurent Nahon
Feb 23, 2010·Journal of the American Society for Mass Spectrometry·Vincent LarrailletPhilippe Dugourd
Oct 12, 2010·Journal of the American Society for Mass Spectrometry·Amandine RacaudJérôme Lemoine
Feb 22, 2013·The Journal of Chemical Physics·Claire BrunetLaurent Nahon
Jul 25, 2009·The Journal of Chemical Physics·S R T Cromie, P Ballone
Feb 26, 2009·Mass Spectrometry Reviews·James P Reilly
Jan 1, 2014·Mass Spectrometry Reviews·Alexandre GiulianiLaurent Nahon
Jan 14, 2012·The Journal of Chemical Physics·G AravindP Dugourd
Aug 4, 2011·Physical Chemistry Chemical Physics : PCCP·Rodolphe Antoine, Philippe Dugourd
Apr 30, 2019·Faraday Discussions·Steven DalyValérie Gabelica
Nov 29, 2013·Mass Spectrometry Reviews·Rodolphe AntoinePhilippe Dugourd
Jul 19, 2011·Physical Chemistry Chemical Physics : PCCP·Aleksandar R MilosavljevićAlexandre Giuliani
Jun 24, 2014·Physical Chemistry Chemical Physics : PCCP·Jan R R VerletAdam S Chatterley
Mar 5, 2009·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·G AravindL H Andersen
Dec 31, 2008·Physical Review Letters·Thibault TabarinVlasta Bonacić-Koutecký
Nov 4, 2008·Journal of the American Chemical Society·Katerina MatheisPhilippe Dugourd
May 23, 2009·The Journal of Physical Chemistry. a·Laure JolyPhilippe Dugourd
May 3, 2012·The Journal of Physical Chemistry Letters·Aleksandar R MilosavljevićAlexandre Giuliani
Jan 25, 2012·The Journal of Physical Chemistry. a·Orla KellyJean A Wyer

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