AVS 46th International Symposium
    Surface Science Division Friday Sessions
       Session SS3+EM-FrM

Paper SS3+EM-FrM9
Reactions of Substituted Aromatic Hydrocarbons with the Si(001) Crystal Surface

Friday, October 29, 1999, 11:00 am, Room 604

Session: Reactions on Semiconductors
Presenter: S.C. Coulter, University of Wisconsin, Madison
Authors: S.C. Coulter, University of Wisconsin, Madison
J.S. Hovis, University of Wisconsin, Madison
M.D. Ellison, University of Wisconsin, Madison
R.J. Hamers, University of Wisconsin, Madison
Correspondent: Click to Email
The surface chemistry of small aromatic molecular systems chemisorbed on the single domain Si(001)-(2x1) face has been investigated using Infrared and X-ray Photoelectron Spectroscopy. Both the [2+2] and the [4+2] Diels-Alder cycloaddition processes are possible. Substitued aromatic hydrocarbons, including toluene, benzonitrile and ortho-, meta- and para-xylene, have been studied to provide clues as to their possible steering effects into a favored bonding geometry. Our data indicates that these reactions are complex and, in some cases, involve multiple bonding configurations. Detailed analysis of the infrared spectra and comparisons with known compounds have been used to help identify the surface products and to provide new understanding of substituent effects during molecular bonding at silicon surfaces.