Three-dimensional structure of nanocomposites from atomic pair distribution function analysis: Study of polyaniline and (polyaniline)0.5V 2O5·1.0H2O

Valeri Petkov, Vencislav Parvanov, Pantelis Trikalitis, Christos Malliakas, Tom Vogt, Mercouri G. Kanatzidis

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The three-dimensional structures of emeraldine base polyaniline (PANI) and (polyaniline)0.5V2O5·1.0H2O have been determined by total X-ray scattering experiments. Atomic pair distribution functions (PDF) were measured to obtain experimental observables against which structural models were tested and refined. The PDF approach is necessary because of the limited structural coherence in these nanostructured materials. Polyaniline possesses a well-defined local atomic arrangement that can be described in terms of an 84-atom orthorhombic unit cell. The nanocomposite (PANI)0.5V2O5·1.0H 2O too is locally well ordered and may be described in terms of a small number of structure-sensible parameters. The PDF approach allows the construction of structure models of PANI and (PANI)0.5V 2O5·1.0H2O on the basis of which important materials' properties can be explained predicted and possibly improved.

Original languageEnglish
Pages (from-to)8805-8812
Number of pages8
JournalJournal of the American Chemical Society
Issue number24
Publication statusPublished - Jun 22 2005


ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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