Self-assembled monolayers based on Pd-containing organometallic thiols: preparation and structural characterization

J Phys Chem A. 2009 Dec 31;113(52):14730-40. doi: 10.1021/jp904865k.

Abstract

Multilayers and self-assembled monolayers of on-purpose-prepared organometallic thiolates, trans-[Pd(PBu(3))(2)(SCOCH(3))(2)], trans-[(C(6)H(5)C[triple bond]C)Pd(PBu(3))(2)(SCOCH(3))], and trans,trans-[(CH(3)COS)Pd(PBu(3))(2)(C[triple bond]C-C(6)H(4)-C(6)H(4)-C[triple bond]C)(PBu(3))(2)Pd(SCOCH(3))] were deposited onto gold surfaces. High-resolution X-ray photoelectron spectroscopy and near-edge X-ray absorption fine structure measurements allowed us to assess the anchoring of the organometallic thiols onto gold substrates; the interaction occurring at the interface; and their molecular orientation on the surface with tilt angles of about 30 degrees-40 degrees, depending on the investigated molecule. The molecule packing density/coverage was also assessed.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Absorption
  • Gold / chemistry
  • Organometallic Compounds / chemistry*
  • Palladium / chemistry*
  • Photoelectron Spectroscopy
  • Silicon / chemistry
  • Sulfhydryl Compounds / chemistry*

Substances

  • Organometallic Compounds
  • Sulfhydryl Compounds
  • Palladium
  • Gold
  • Silicon