Paper SS-ThP10
Adsorption, Self Assembly, and Electronic States of Corrole Molecules Adsorbed on Different Copper Facets
Thursday, November 12, 2009, 6:00 pm, Room Hall 3
| Session: |
Surface Science Poster Session |
| Presenter: |
L. Lichtenstein, University of Hamburg, Germany |
| Authors: |
L. Lichtenstein, University of Hamburg, Germany
S. Kuck, University of Hamburg, Germany
G. Hoffmann, University of Hamburg, Germany
R. Wiesendanger, University of Hamburg, Germany
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| Correspondent: |
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A new member of the metalloporphyrinoid class is the one-carbon short corrole which is a very accessible, easily tunable compound with many potential applications in material science and catalysis. These molecules differ from the parent porphyrin molecules [1] mainly by their lower inherent symmetry and the smaller cavity. In this study using STM we address the conformation (orientation and chirality) and self assembly of iron-triphenylcorrole (FeTPC) molecules on Cu(100) and Cu(111). At low coverage FeTPC molecules show restricted symmetry and can be controllably switched among different conformations [2]. At higher coverage formation of regular aggregates can be observed. We will present the results of the growth study in dependence of surface geometry and coverage and discuss results of scanning tunneling spectroscopy investigations of these systems.[1] W. Auwärter et al., "Molecular nanoscience and engineering on surfaces", Int J. Nanotechnology Vol. 5, 1171 (2008).
[2] S. Kuck et al., "Naked" Iron-5,10,15-triphenylcorrole on Cu(111): Observation of Chirality on a Surface and Manipulation of Multiple Conformational States by STM, J. Am. Chem. Soc., 130, 14072 (2008).
This work was supported by the DFG within the GrK 611 and the SFB 668-A5 and by the European Union in the project “SPiDMe”.