Potential-Dependent Surface Raman Spectroscopy of Buckminsterfullerene Films on Gold: Vibrational Characteristics of Anionic Versus Neutral C60

Abstract

Real time surface enhanced Raman spectra have been obtained for thin films of buckminsterfullerene (C60) on gold in acetonitrile during cyclic voltammetric potential excursions. At potentials where neutral C60 is stable, all ten normally active Raman bands are observed, along with three weaker features that are infrared active in the bulk phase vibrational spectra. Upon electroreduction to the C60 monoanion, several Raman-active bands downshift significantly in frequency, most prominently for the Ag mode (1460 cm-1), which decreases by almost 20 cm-1. Additionally, several Hg bands become more intense, and in two cases yield doublets upon C60 formation, most probably reflecting a diminution in molecular symmetry.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1991
Accession Number
ADA241800

Entities

People

  • G. Edens
  • Michael J. Weaver
  • Yinglong Zhang

Organizations

  • Purdue University

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Acetonitrile
  • Acquisition
  • Chemistry
  • Classification
  • Data Acquisition
  • Energy Bands
  • Frequency
  • Fullerenes
  • Military Research
  • Raman Spectra
  • Raman Spectroscopy
  • Security
  • Sequences
  • Spectra
  • Spectroscopy
  • Thin Films
  • Vibrational Spectra

Fields of Study

  • Physics

Readers

  • Electrochemical Surface Science
  • Spectroscopy.