Abstract
Electronic and structural properties of thin, chemisorbed adenine films on Cu(110) have been investigated by ultraviolet photoelectron spectroscopy and reflection high-energy electron diffraction. Molecular reorientation at the particular coverage of about 0.3 ML from a disordered flat-lying to a long-range ordered standing-up phase is accompanied by pronounced changes of the interfacial dipole provided by the alignment of the intrinsic dipole moment of the polar molecule. Similar hybrid interfacial states are observed for ordered flat-lying and standing-up layers, suggesting comparable atomic site-specific N–Cu interactions.
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