Electron spectra of a self-assembled monolayer on gold: Inverse photoemission and two-photon photoemission spectroscopy

N. J. Watkins, C. D. Zangmeister, C. K. Chan, W. Zhao, J. W. Ciszek, J. M. Tour, A. Kahn, R. D. van Zee

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Abstract

Ultraviolet photoemission spectroscopy, inverse photoemission spectroscopy, and two-photon photoemission spectroscopy are techniques commonly used to examine the electronic structure of surfaces and interfaces. We have used all three to study self-assembled monolayers of 4,4′-bis(phenylethynyl)benzenethiol on gold, a system often studied for potential application in molecular electronic junctions. We compare the results of these measurements and discuss them in relation to electronic structure calculations. The result is a better understanding of the valence electronic structure for this system, of the spectroscopic methods involved, and of previous measurements.

Original languageEnglish (US)
Pages (from-to)359-364
Number of pages6
JournalChemical Physics Letters
Volume446
Issue number4-6
DOIs
StatePublished - Oct 4 2007

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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    Watkins, N. J., Zangmeister, C. D., Chan, C. K., Zhao, W., Ciszek, J. W., Tour, J. M., Kahn, A., & van Zee, R. D. (2007). Electron spectra of a self-assembled monolayer on gold: Inverse photoemission and two-photon photoemission spectroscopy. Chemical Physics Letters, 446(4-6), 359-364. https://doi.org/10.1016/j.cplett.2007.08.070