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Site-specific adsorption of aromatic molecules on a metal/ metal oxide phase boundary.

08:00 EDT 7th June 2018 | BioPortfolio

Summary of "Site-specific adsorption of aromatic molecules on a metal/ metal oxide phase boundary."

Nano-structured surfaces are ideal templates to control the self-assembly of molecular structures towards well-defined functional materials. To understand the initial adsorption process, we have investigated the arrangement and configuration of aromatic hydrocarbon molecules on nano-structured substrates composed of an alternating arrangement of Cu(110) and oxygen-reconstructed stripes. Scanning tunneling microscopy reveals a preferential adsorption of molecules at oxide phase boundaries. Non-contact atomic force microscopy experiments provide a detailed insight into the preferred adsorption site. By combining sub-molecular resolution imaging with density functional theory calculations, the interaction of the molecule with the phase boundary was elucidated, excluding a classical hydrogen bonding. Instead, a complex balance of different interactions is revealed. Our results provide an atomistic picture for the driving forces of the adsorption process. This comprehensive understanding enables developing strategies for the bottom-up growth of functional molecular systems using nano-templates.

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This article was published in the following journal.

Name: Nano letters
ISSN: 1530-6992
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