Reference : Probing ultrafast purely electronic charge migration in small peptides
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Chemistry
http://hdl.handle.net/2268/34582
Probing ultrafast purely electronic charge migration in small peptides
English
Remacle, Françoise mailto [Université de Liège - ULg > Département de chimie (sciences) > Laboratoire de chimie physique théorique >]
Levine, R. D. [> > > >]
2007
Zeitschrift Fur Physikalische Chemie-International Journal Of Research In Physical Chemistry & Chemical Physics
221
5
647-661
Yes (verified by ORBi)
International
0942-9352
[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.
http://hdl.handle.net/2268/34582
10.1524/zpch.2007.221.5.647

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