IUVSTA 15th International Vacuum Congress (IVC-15), AVS 48th International Symposium (AVS-48), 11th International Conference on Solid Surfaces (ICSS-11)
    Semiconductors Thursday Sessions
       Session SC+SS+EL-ThM

Paper SC+SS+EL-ThM11
Scanning Tunneling Microscopy of a Conjugated {C}3-oligomer on Si(100)

Thursday, November 1, 2001, 11:40 am, Room 111

Session: Interaction of Hydrogen and Organics with Silicon
Presenter: B. Grandidier, ISEN, France
Authors: B. Grandidier, ISEN, France
C. Krzeminski, IEMN/ISEN, France
J.P. Nys, IEMN/ISEN, France
C. Delerue, IEMN/ISEN, France
D. Stievenard, IEMN/ISEN, France
C. Martineau, IMMO, France
P. Blanchard, IMMO, France
J. Roncali, IMMO, France
Correspondent: Click to Email
Scanning tunneling microscopy (STM) has been used to study the adsorption of a {C}3 p-conjugated oligomer on the Si(100) surface. The symmetry of the molecule is resolved with the STM and different conformations are observed. As the oligomer is made up of vinyl groups and aromatic constituents, which are all known to react with the Si(100) surface through cycloaddition reactions, ab initio calculations are performed to determine the occupied molecular orbitals of the free and covalently bound oligomers. The results are compared with the occupied state STM images to characterize the adsorption state of the different conformations.