An X-Ray Photoelectron Spectroscopic Study of Multilayers of an Electroactive Ferrocene Derivative Attached to Platinum and Gold Electrodes.
NORTH CAROLINA UNIV AT CHAPEL HILL WILLIAM R KENAN JR LABS OF CHEMISTRY
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Pretreated anodized Pt and Au electrode surfaces derivatized with 1,1- ferrocenediyldichlorosilane have been analyzed by X-ray photoelectron spectroscopy XPES. The derivatized surfaces exhibit Fe 2p32 bands with binding energies consistent with ferrocene iron and with large companion satellite peaks. Using a layer model, relative Fe 2p32 and electrode substrate intensities Au or Pt can be correlated with ferrocene coverage measured by cyclic voltammetry. The results indicate that electrochemical charge transfer can occur through ferrocenesilane layers of thicknesses exceeding 100 Angstrom. Author
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