Regensburg 2013 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

O: Fachverband Oberflächenphysik

O 58: Poster Session III (Solid-liquid interfaces; Scanning probe and other methods; Electronic structure theory; Spin-orbit interaction)

O 58.37: Poster

Mittwoch, 13. März 2013, 18:15–21:45, Poster B1

Combined STM/AFM study on cyclic trimeric perfluoro-ortho-phenylene mercury — •Florian Albrecht¹, John McManus¹, Martin Fleischmann², Manfred Scheer², and Jascha Repp¹ — ¹Institute of Experimental and Applied Physics, University of Regensburg, 93053 Regensburg, Germany — ²Institute of Inorganic Chemistry, University of Regensburg, 93053 Regensburg, Germany

Despite the fact that cyclic trimeric perfluoro-ortho-phenylene mercury (TPM) molecules have a relatively large void at their center, their lowest unoccupied molecular orbital (LUMO) was calculated to have highest density just there [1]. To verify this experimentally, we studied TPM by means of low-temperature combined scanning tunneling (STM) and atomic force microscopy (AFM). From combining the structural information obtained in the AFM with the electronic information in the STM channel, we indeed confirm this picture. The molecule has the tendency to attract electron rich ligands at its center. We directly mapped out the interaction of a prototype ligand to the TPM molecule by attaching the ligand to the tip and measuring its interaction with the molecule adsorbed on the sample surface.

[1] M. R. Haneline and F. P. Gabbai, Inorg. Chem., 44, 6248, (2005)