AVS 56th International Symposium & Exhibition
    Surface Science Thursday Sessions
       Session SS-ThP

Paper SS-ThP8
Adsorption of Metal Phthalocyanines on Cu(111) and Cu(100): A STM Study

Thursday, November 12, 2009, 6:00 pm, Room Hall 3

Session: Surface Science Poster Session
Presenter: S. Chang, University of Hamburg, Germany
Authors: S. Chang, University of Hamburg, Germany
J. Brede, University of Hamburg, Germany
J. Schwöbel, University of Hamburg, Germany
S. Kuck, University of Hamburg, Germany
G. Hoffmann, University of Hamburg, Germany
R. Wiesendanger, University of Hamburg, Germany
Correspondent: Click to Email
The temperature dependent adsorption behavior of 4-fold symmetric metal phthalocyanines (MPcs) on metals with commensurate and incommensurate symmetries was investigated by means of scanning tunneling microscopy. On the 4-fold symmetric Cu(100) surface, planar and 4-fold molecular structures in two equivalent orientations were found for MPcs when prepared at room temperature. In addition, two metastable orientations were identified when prepared at low temperature which can be depopulated upon annealing. MPcs adsorbed on the 6-fold symmetric Cu(111) surface showed a disturbed molecular appearance. The symmetry of molecular structures changed from 4-fold to 2-fold which is discussed in terms of molecule-substrate interaction.

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”.