Article (Scientific journals)
Probing ultrafast purely electronic charge migration in small peptides
Remacle, Françoise; Levine, Raphaël David
2007In Zeitschrift für Physikalische Chemie, 221 (5), p. 647-661
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Abstract :
[en] A pump-probe experiment that can examine a pure charge migration on a time scale short compared to the onset of nuclear motion is discussed. The mass spectrometric studies of Schlag et al. suggest that short peptide terminated by an aromatic amino acid are particularly suitable test compounds. The pump pulse needs to ionize the molecule on a time scale short compared to the period of the electronic motion, typically sub-fs. However, ionization occurs preferentially when the electrical field of the light is maximal so that the duration of the pulse envelope can be somewhat longer. Detection by photoelectron spectrometry of the peptide cation, to produce a dication, is shown to be able to probe the electronic rearrangement.
Disciplines :
Chemistry
Author, co-author :
Remacle, Françoise  ;  Université de Liège - ULiège > Département de chimie (sciences) > Laboratoire de chimie physique théorique
Levine, Raphaël David
Language :
English
Title :
Probing ultrafast purely electronic charge migration in small peptides
Publication date :
2007
Journal title :
Zeitschrift für Physikalische Chemie
ISSN :
0942-9352
eISSN :
2196-7156
Publisher :
Walter de Gruyter, Germany
Volume :
221
Issue :
5
Pages :
647-661
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 05 January 2010

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