Atomic Force Microscopy Reveals Bistable Configurations of Dibenzo[a,h]thianthrene and their Interconversion Pathway
| Autor: | Mathias Neu, Niko Pavliček, Mario Ruben, Benoit Fleury, Coral Herranz-Lancho, Judith Niedenführ, Jascha Repp |
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| Rok vydání: | 2012 |
| Předmět: |
Materials science
Bistability ddc:540 General Physics and Astronomy Nanotechnology 68.43.Fg law.invention Condensed Matter::Materials Science chemistry.chemical_compound Adsorption law Physics::Atomic and Molecular Clusters Molecule Physics::Chemical Physics 68.37.Ef Thianthrene Quantum tunnelling ddc:530 Resolution (electron density) 530 Physik 82.37.Gk Molecular geometry chemistry Chemical physics 540 Chemie Scanning tunneling microscope 68.37.Ps |
| Zdroj: | Physical Review Letters. 108 |
| ISSN: | 1079-7114 0031-9007 |
| DOI: | 10.1103/physrevlett.108.086101 |
| Popis: | We investigated dibenzo[a,h]thianthrene molecules adsorbed on ultrathin layers of NaCl using a combined low-temperature scanning tunneling and atomic force microscope. Two stable configurations exist corresponding to different isomers of free nonplanar molecules. By means of excitations from inelastic electron tunneling we can switch between both configurations. Atomic force microscopy with submolecular resolution allows unambiguous determination of the molecular geometry, and the pathway of the interconversion of the isomers. Our investigations also shed new light on contrast mechanisms in scanning tunneling microscopy. |
| Databáze: | OpenAIRE |
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