ISSP - The institute for Solid State Physics

Seminar
Font Size: (S) / (M) / (L)
[ISSP Colloquiums]
Absolute determination of molecular conformation by angle scanned photoelectron diffraction (XPD)
Title : Absolute determination of molecular conformation by angle scanned photoelectron diffraction (XPD)
Date :
Time :
2009/2/5(Thu)
4:00 PM -  
Place : Lecture Room (A632), 6th Floor, ISSP   
Lecturer : Prof. Thomas Greber
Affiliation : Physik Institute der Universitat Zuerich
Summary : In order to understand molecular function we have to know the molecular conformation. On surfaces the conformation is determined by preferential adsorption sites, which impose orientation, changes in chemical state and shape of the molecule and the surface. The chemical state is seen by X-ray photoelectron spectroscopy (XPS), while the corresponding angular resolved diffraction experiment (XPD) maps the angles of molecular bonds with high accuracy. The examples of chiral recognition of D- and L-cysteine on a chiral gold surface [1], the formation of molecular chains on monoatomic steps [2] the reorientation of C60 molecules upon charge transfer [3] and recent results on Ar in C60 are presented.

[1] Greber et al. Phys. Rev. Lett. 96 (2006) 056103, Schllinger et al. 98 (2007) 136102.
[2] Tamai et al. Surf. Sci. 566-568 (2004) 633.
[3] Muntwiler et al. Phys. Rev. B, 71 (2005) 241401.
Contact : Taichi OKUDA (ext.63405)