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STM Study of Self-Organization of 10CB Molecules on Au(111) Surface |
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| Authors: | Sergii V Snegir Oleksiy L Kapitanchuk Emmanuelle Lacaze Alexandr Marchenko |
| Institution: | 1. A. A. Chuiko Institute of Surface Chemistry , National Academy of Sciences of Ukraine , Kyiv , Ukraine;2. Institute of Physics , National Academy of Sciences of Ukraine , Kyiv , Ukraine;3. Institute of Physics , National Academy of Sciences of Ukraine , Kyiv , Ukraine;4. Bogolyubov Institute for Theoretical Physics , National Academy of Sciences of Ukraine , Kyiv , Ukraine;5. Institut des NanoSciences de Paris (INSP) , CNRS, Université Pierre et Marie Curie-Paris 06 , Paris , France;6. Institute of Physics , National Academy of Sciences of Ukraine , Kyiv , Ukraine |
| Abstract: | We report the scanning tunnelling microscopy (STM) observation of a self-organization of 4-cyano-4′-n-decylbiphenyl (10CB) molecules on the reconstructed Au(111) surface. The self-organized monolayers were obtained by the deposition from a liquid. We revealed a row-like dimer structure with regularly arranged kinks within each dimer row. The separation between neighbor kinks is equal to 4 or 5 intermolecular distances. STM-images with intramolecular resolution showed that the association of molecules in dimers is due to the interaction between cyano groups. The obtained results are discussed in terms of the balance between the molecule-molecule and molecule-substrate interactions and are supported by the results of DFT calculations. |
| Keywords: | STM self-assembled monolayers reconstructed Au(111) surface 10CB 4-cyano-4′-n-decylbiphenyl alignment alkyl chain |