Observation of Ultrafast Charge Migration in an Amino Acid (Articolo in rivista)

Type
Label
  • Observation of Ultrafast Charge Migration in an Amino Acid (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1021/jz3016028 (literal)
Alternative label
  • L. Belshaw, F. Calegari, M.J. Duffy, A. Trabattoni, L. Poletto, M. Nisoli and J.B. Greenwood (2012)
    Observation of Ultrafast Charge Migration in an Amino Acid
    in The journal of physical chemistry letters
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • L. Belshaw, F. Calegari, M.J. Duffy, A. Trabattoni, L. Poletto, M. Nisoli and J.B. Greenwood (literal)
Pagina inizio
  • 3751 (literal)
Pagina fine
  • 3754 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 3 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 24 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • [ 1 ] Queens Univ Belfast, Sch Math & Phys, Ctr Plasma Phys, Belfast BT7 1NN, Antrim, North Ireland [ 2 ] Politecn Milan, Dept Phys, Inst Photon & Nanotechnol, CNR IFN, I-20133 Milan, Italy [ 3 ] CNR IFN, Inst Photon & Nanotechnol, I-35131 Padua, Italy (literal)
Titolo
  • Observation of Ultrafast Charge Migration in an Amino Acid (literal)
Abstract
  • We present the first direct measurement of ultrafast charge migration in a biomolecular building block the amino acid phenylalanine. Using an extreme ultraviolet pulse of 1.5 fs duration to ionize molecules isolated in the gas phase, the location of the resulting hole was probed by a 6 fs visible/near-infrared pulse. By measuring the yield of a doubly charged ion as a function of the delay between the two pulses, the positive hole was observed to migrate to one end of the cation within 30 fs. This process is likely to originate from even faster coherent charge oscillations in the molecule being dephased by bond stretching which eventually localizes the final position of the charge. This demonstration offers a clear template for observing and controlling this phenomenon in the future. (literal)
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