Jux N, Maier F, Steinrück HP (2007)
Publication Type: Journal article
Publication year: 2007
Original Authors: Lukasczyk T., Flechtner K., Merte L.R., Jux N., Maier F., Gottfried J.M., Steinrück H.-P.
Publisher: American Chemical Society
Book Volume: 111
Pages Range: 3090-3098
Journal Issue: 7
DOI: 10.1021/jp0652345
The interaction of cobalt(II) tetraphenylporphyrin (CoTPP) and cobalt(II) tetrakis-(3,5-di-tert-butylphenyl)-porphyrin (CoTTBPP) with a Ag(111) surface has been investigated with photoelectron spectroscopy (XPS/ UPS). It is demonstrated that these adsorbed metal complexes are excellent model systems for studying the electronic interaction between a coordinated metal ion and a metal surface. The photoelectron spectra and work function data provide evidence that the electronic interaction between the cobalt ion and the silver surface results in a transfer of electron density from the surface to the ion. The presence of an additional electronic state located ∼1 eV above the singly occupied molecular orbital (SOMO) of the metalloporphyrins is consistent with a molecular orbital (MO) model of the Co-Ag interaction as is the fact that the energetic position of this state depends on the distance between the Co ion and the Ag surface. The adsorbate-induced work function changes for the saturated monolayers amount to -0.72 eV for CoTPP and -0.91 eV for CoTTBPP. For comparison, we also present data of monolayer films of tetraphenylporphyrin and zinc(II) tetraphenylporphyrin. © 2007 American Chemical Society.
APA:
Jux, N., Maier, F., & Steinrück, H.-P. (2007). Interaction of cobalt(II) tetraarylporphyrins with a Ag(111) surface studied with photoelectron spectroscopy. Journal of Physical Chemistry C, 111(7), 3090-3098. https://doi.org/10.1021/jp0652345
MLA:
Jux, Norbert, Florian Maier, and Hans-Peter Steinrück. "Interaction of cobalt(II) tetraarylporphyrins with a Ag(111) surface studied with photoelectron spectroscopy." Journal of Physical Chemistry C 111.7 (2007): 3090-3098.
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