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  • Title: Electronic states of a single layer of pentacene: standing-up and flat-lying configurations.
    Author: Betti MG, Kanjilal A, Mariani C.
    Journal: J Phys Chem A; 2007 Dec 13; 111(49):12454-7. PubMed ID: 17988104.
    Abstract:
    The electronic properties of a single layer (SL) of pentacene molecules are investigated by high-resolution UV photoemission and near-edge X-ray absorption spectroscopy in different configurations of the SL, either standing up on an aromatic self-assembled monolayer or planar on a bare Cu(001) substrate. The weakly interacting pentacene molecules in the standing-up SL present a semiconducting character, and the empty states distribution reflects that of gas-phase pentacene, while the planar pentacene-Cu system shows a metallic interface with redistribution of the empty molecular states. The highest-occupied molecular orbital lineshape in the weakly interacting SL shows a double structure, attributed to two nonequivalent molecules in the ordered configuration.
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