| AVS 56th International Symposium & Exhibition | |
| Surface Science | Thursday Sessions |
| Session SS2-ThA |
| Session: | Supramolecular Interfaces by Design |
| Presenter: | S. Kuck, University of Hamburg, Germany |
| Authors: | S. Chang, University of Hamburg, Germany K. Clark, Ohio University A. Dilullo, Ohio University S. Kuck, University of Hamburg, Germany S.-W. Hla, Ohio University G. Hoffmann, University of Hamburg, Germany R. Wiesendanger, University of Hamburg, Germany |
| Correspondent: | Click to Email |
In our contribution we introduce such a promising candidate, the so called Salens, and present first results on the local investigation by Scanning Tunneling Microscopy (STM). Salens are volatile metal-organic complexes with the metallic ion caged from three sides. Salens are chemically easily modified to tune the interaction with a substrate, with neighboring molecules, or to establish an intramolecular electronic and magnetic communication between two metallic centers through the organic periphery. Based on the paramagnetic Co-Salen, which shows no self-assembly on metallic substrates, we demonstrate that the exchange of a single atom in the molecular structure the interaction can be tuned from repulsive to attractive interaction[1]. Even surface-supported covalent bonding can be initiated to form larger entities. By means of STM, STS, and STM induced manipulation we will discuss the adsorption and the electronic properties of the parent Co-Salen and modified Salens on metallic and isolating surfaces.
Acknowledgements: This work was supported by the DFG within the GrK 611 and the SFB 668-A5, by the EU in the project “SPiDMe”, and the NSF-PIRE program.
[1] S. Kuck et al., “Steering two dimensional molecular growth via dipolar interaction“, accepted for publication in ChemPhysChem (2009).