In-Situ Spectroscopic Studies of Redox Active Self-Assembled Monolayers on Gold Electrode Surfaces

Abstract

Monolayers of N-ethyl-N-octadecyl-4,4-bipyridinium (EOB) have been prepared on smooth gold surfaces prepared by spontaneous self-assembly of the electrochemically reduced form of the amphiphile and have been examined with in situ Fourier Transform Infrared Reflection Absorption Spectroscopy (FTIRRAS). Prominent positive-going peaks with hardly any detectable negative-going counterparts were observed in the normalized potential difference spectra of the layer in the reduced state (using as a reference the spectra for the layer in the fully oxidized state) in the region between 1100 and 1700 cm-1. In analogy with a model put forward by other workers it is proposed that the spectral bands originate from vibronically activated totally symmetric modes of EOB+ in monomeric and/or dimeric form.

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Document Details

Document Type
Technical Report
Publication Date
Oct 30, 1990
Accession Number
ADA235564

Entities

People

  • D. A. Scherson
  • E. Yeager
  • Hao Huang
  • I. Bae

Organizations

  • Case Western Reserve University

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Absorption
  • Assembly
  • Chemistry
  • Classification
  • Electrochemistry
  • Electrodes
  • Energy Bands
  • Films
  • Intensity
  • Materials
  • Materials Science
  • Monomolecular Films
  • Reflection
  • Self Assembled Monolayers
  • Self Assembly
  • Spectra
  • Spectroscopy

Readers

  • Nanocomposite Materials Science
  • Spectroscopy.
  • Thin Film Deposition Science.