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  • Title: Electronic states of CuPc chains on the Au(110) surface.
    Author: Evangelista F, Ruocco A, Gotter R, Cossaro A, Floreano L, Morgante A, Crispoldi F, Betti MG, Mariani C.
    Journal: J Chem Phys; 2009 Nov 07; 131(17):174710. PubMed ID: 19895038.
    Abstract:
    The electronic properties of Cu-phthalocyanine (CuPc) molecules flat lying along the channels of the Au(110) reconstructed surface have been investigated by means of ultraviolet and x-ray photoelectron spectroscopy. The ordered chains give rise to a highly ordered single-layer structure with a (5x3) symmetry. Although from the core-level analysis not any significant charge transfer between the molecules and the underlying Au surface is observed, the valence band photoemission data bring to light CuPc-induced features localized at the interface. In particular, energy versus momentum dispersion of an interface state reveals a bandwidth of about 90 meV along the enlarged Au channels, where the CuPc chains are formed, with a defined fivefold symmetry well fitting the CuPc intermolecular distance.
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