Loops versus stems : benzylic sulfide oligomers forming carpet type monolayers

Sander, Fabian and Peterle, Torsten and Ballav, Nirmalya and Wrochem, Florian von and Zharnikov, Michael and Mayor, Marcel. (2010) Loops versus stems : benzylic sulfide oligomers forming carpet type monolayers. Journal of Physical Chemistry C, 114 (9). pp. 4118-4125.

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Official URL: http://edoc.unibas.ch/dok/A5265356

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Chainlike oligomers consisting of several meta position interlinked benzylic sulfides and terminal benzylic thiols were synthesized, and the nature of the molecular monolayers formed by their self-assembly on gold (111) substrates was investigated. The fabricated films were characterized by high-resolution X-ray photoelectron spectroscopy and near-edge X-ray absorption fine structure spectroscopy. In the case of the short oligomers, the spectroscopic studies were additionally supported by scanning tunneling microscopy experiments. The target molecules were found to form dense and contamination-free self-assembled monolayer (SAM)-like “carpet” films on gold (111). In spite of the multidentate nature of the benzylic sulfide oligomers, the predominant molecular conformation in these films were bridges (“loops”) formed by the covalent attachment of both terminal thiols with a minor amount of molecules which were bound by only one thiol group as upright standing “stems” protruding the SAM. The films exhibited only a limited degree of order with slight preference of a perpendicular-to-the-surface orientation of the individual phenyl rings of the oligomer chains.
Faculties and Departments:05 Faculty of Science > Departement Chemie > Chemie > Molecular Devices and Materials (Mayor)
UniBasel Contributors:Mayor, Marcel
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:American Chemical Society
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:05 Apr 2017 13:52
Deposited On:22 Mar 2012 13:34

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