Scanning Tunneling Microscopy and Spectroscopy Studies of Individual Lander Molecules Anchored on a Copper Oxide Nanotemplate
| Autor: | Y. Naitoh, Federico Rosei, Ivan Stensgaard, Flemming Besenbacher, Christian Joachim, Erik Lægsgaard, André Gourdon |
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| Rok vydání: | 2008 |
| Předmět: |
Surface diffusion
Copper oxide Scanning tunneling spectroscopy Analytical chemistry Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention chemistry.chemical_compound Crystallography General Energy chemistry law Molecule Molecular orbital Physical and Theoretical Chemistry Scanning tunneling microscope Spectroscopy HOMO/LUMO |
| Zdroj: | Naitoh, Y, Rosei, F, Gourdon, A, Lægsgaard, E, Stensgaard, I, Joachim, C & Besenbacher, F 2008, ' Scanning tunneling microscopy and spectroscopy studies of individual lander molecules anchored on a copper oxide nanotemplate ', Journal of Physical Chemistry Part C: Nanomaterials and Interfaces, vol. 112, pp. 16118-16122 . https://doi.org/10.1021/jp8053197 |
| ISSN: | 1932-7455 1932-7447 |
| DOI: | 10.1021/jp8053197 |
| Popis: | By means of scanning tunneling microscopy (STM), scanning tunneling spectroscopy (STS), and current image tunneling spectroscopy (CITS), we have studied the electronic properties of individual “Lander” molecules anchored on a nanopatterned Cu(110) surface. To hinder surface diffusion during STM and STS imaging and spectroscopy studies at room temperature, the molecules are immobilized in the troughs of the Cu-O nanotemplate which forms on the Cu(110) surface by exposure to oxygen at high temperature. STS spectra extracted from CITS images reveal no lateral dependency over the molecules, which indicates that the electronic features above the center of the molecules as well as above the four spacer legs are very similar. An electronic gap of ∼2.2 eV was determined from the dI/dV spectra, which is tentatively ascribed to the highest occupied molecular orbital (HOMO)-lowest unoccupied molecular orbital (LUMO) gap of the Lander molecules. |
| Databáze: | OpenAIRE |
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