AVS 47th International Symposium
    Surface Science Thursday Sessions
       Session SS2+VT-ThM

Paper SS2+VT-ThM5
Geometrical Structure and Orientation of Metal Tetraphenylporphyrins on Au (111)

Thursday, October 5, 2000, 9:40 am, Room 209

Session: Adsorption and Desorption Phenomena II
Presenter: L. Scudiero, Washington State University
Authors: K.W. Hipps, Washington State University
L. Scudiero, Washington State University
D.E. Barlow, Washington State University
Correspondent: Click to Email
Geometrical structure and orientation of metal tetraphenylporphyrins on Au (111). Metal (II) tetraphenylporphyrin (MTPP) complexes adsorbed on polycrystalline Au and Au (111) are studied by Fourier transform reflectance-absorption infrared (FT-RAIR), X-ray Photoelectron Spectroscopy (XPS) and Scanning Tunneling Microscope (STM). XPS and FT-RAIR data indicate that the chemical composition of those complexes is preserved when they are vapor deposited on Au. FT-RAIR data also suggests that the first few adsorbed layers are oriented with the porphyrin ring parallel to the Au surface. STM images are presented for several transition metal ions. At low coverage, STM images show monolayer islands randomly distributed on Au (111) and high-resolution images display a square unit cell.