Toward mechanical switching of surface-adsorbed [2]catenane by in situ copper complexation
| Autor: | C. O. Dietrich-Buchecker, Jean-Paul Collin, Klaus Kern, Nicola Malinowski, Jean-Pierre Sauvage, Ulrich Starke, Nian Lin, Mitsuharu Konuma, Stephan Rauschenbach, Chariya Virojanadara, Dietmar Payer |
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| Rok vydání: | 2007 |
| Předmět: |
Templated Synthesis
Transition-Metals Spectrometry Mass Electrospray Ionization Surface Properties Electrospray ionization Phenanthroline Dimer Catenane Inorganic chemistry Stacking Ligands Biochemistry Catalysis law.invention chemistry.chemical_compound Colloid and Surface Chemistry X-ray photoelectron spectroscopy law Microscopy Scanning Tunneling Molecule Polycyclic Compounds Au(111) Interlocked Macrocyclic Ligands Anthracenes Molecular Structure Catenands Chemistry Solid-State General Chemistry Dynamics Nanostructures Crystallography Machines Adsorption Scanning tunneling microscope Benzylic Amide Copper |
| Zdroj: | Journal of the American Chemical Society. 129(50) |
| ISSN: | 1520-5126 |
| Popis: | Using scanning tunneling microscopy (STM), electrospray ionization mass spectrometry (ESI-MS), and X-ray photoelectron spectroscopy (XPS), we demonstrate that a free (2]catenane consisting of two interlocking 30-membered rings (cat-30) can be deposited on a Ag(111) surface by vacuum sublimation without decomposition. The deposited cat-30 molecules self-organize as ordered dimer chain structures at the surface, presumably via intermolecular pi-pi stacking. An in situ addition of Cu atoms to the surface-adsorbed catenanes induces a drastic change in the molecular organization, i.e., from the dimer chain structure to isolated species. The nitrogen core level spectra suggest that the cat-30 phenanthroline units coordinate with Cu, indicating that the free catenane has been transformed into a Cu-complexed [2]catenane. Since it is known that the two interlocked macrocyclic rings of the free ligand cat-30 completely rearrange, i.e., circumrotate, upon complexation to copper, our results reveal that when adsorbed on the silver surface, the two macrocyclic rings of the free [2]catenane can glide within one another so as to generate the corresponding copper complex by in situ Cu complexation. |
| Databáze: | OpenAIRE |
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