Picometer-Scale Electronic Control of Molecular Dynamics Inside a Single Molecule

DOI Web Site 3 Citations
  • M. Lastapis
    Laboratoire de Photophysique Moléculaire, Bâtiment 210, Université Paris-Sud, 91405 Orsay, France.
  • M. Martin
    Laboratoire de Photophysique Moléculaire, Bâtiment 210, Université Paris-Sud, 91405 Orsay, France.
  • D. Riedel
    Laboratoire de Photophysique Moléculaire, Bâtiment 210, Université Paris-Sud, 91405 Orsay, France.
  • L. Hellner
    Laboratoire de Photophysique Moléculaire, Bâtiment 210, Université Paris-Sud, 91405 Orsay, France.
  • G. Comtet
    Laboratoire de Photophysique Moléculaire, Bâtiment 210, Université Paris-Sud, 91405 Orsay, France.
  • G. Dujardin
    Laboratoire de Photophysique Moléculaire, Bâtiment 210, Université Paris-Sud, 91405 Orsay, France.

Abstract

<jats:p>Tunneling electrons from a low-temperature (5 kelvin) scanning tunneling microscope were used to control, through resonant electronic excitation, the molecular dynamics of an individual biphenyl molecule adsorbed on a silicon(100) surface. Different reversible molecular movements were selectively activated by tuning the electron energy and by selecting precise locations for the excitation inside the molecule. Both the spatial selectivity and energy dependence of the electronic control are supported by spectroscopic measurements with the scanning tunneling microscope. These experiments demonstrate the feasibility of controlling the molecular dynamics of a single molecule through the localization of the electronic excitation inside the molecule.</jats:p>

Journal

  • Science

    Science 308 (5724), 1000-1003, 2005-05-13

    American Association for the Advancement of Science (AAAS)

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