Orbital-Dependent Charge Transfer Dynamics in Conjugated Self-Assembled Monolayers

H. Hamoudi, S. Neppl, P. Kao, B. Schüpbach, P. Feulner, A. Terfort, D. Allara, and M. Zharnikov
Phys. Rev. Lett. 107, 027801 – Published 5 July 2011

Abstract

Femtosecond charge transfer (CT) dynamics in a series of self-assembled monolayers with an oligo(phenylenethynylene) and oligo(phenyl) backbone is addressed by resonant Auger spectroscopy using the core hole clock method. The characteristic CT times are found to depend strongly on the character of the molecular orbital (MO) which mediates the CT process. This demonstrates that the efficiency and rate of CT through molecular frameworks can be controlled by resonant injection of the charge carriers into specific MOs.

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  • Received 21 January 2011

DOI:https://doi.org/10.1103/PhysRevLett.107.027801

© 2011 American Physical Society

Authors & Affiliations

H. Hamoudi1, S. Neppl2, P. Kao3, B. Schüpbach4, P. Feulner2, A. Terfort4, D. Allara3, and M. Zharnikov1,*

  • 1Angewandte Physikalische Chemie, Universität Heidelberg, 69120 Heidelberg, Germany
  • 2Physikdepartment E20, Technische Universität München, 85747 Garching, Germany
  • 3Departments of Chemistry and Material Science, Pennsylvania State University, University Park, Pennsylvania 16802, USA
  • 4Institut für Anorganische und Analytische Chemie, Universität Frankfurt, Max-von-Laue-Straße 7, 60438 Frankfurt, Germany

  • *To whom correspondence should be addressed. Michael.Zharnikov@urz.uni-heidelberg.de

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Vol. 107, Iss. 2 — 8 July 2011

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