Phonons in polyacenic chains

O. Rafil, M. Tamine, B. Bourahla, R. Tigrine, S. Amoudache, A. Khater

Research output: Contribution to journalArticle

Abstract

We have theoretically resolved phonon excitations in quasi-two-dimensional organic crystals of polyacenic semiconductor material which may be obtained by the pyrolytic treatment of phenol-formaldehyde resin. A model for studying the dynamical properties using three polyacene chains is proposed with the aim to present the vibrational properties of this structure. It employs the formalism of solid states in two dimensions which admit phonons. A simulation process of the two-dimensional lattice structure shows that elastic waves may explain the existence of vibrational modes in the frequency range 100-400 cm-1. The presence of acoustic and optical like phonons is discussed in terms of the elastic force constants. A hyperfine resonance structure is obtained. It allows the analysis of the dynamical evolution in thin films of polyacene. It is found that the behavior of the phonon density of states exhibits resonance between modes in the structure.

Original languageEnglish
Pages (from-to)229-236
Number of pages8
JournalChinese Journal of Polymer Science (English Edition)
Volume24
Issue number3
DOIs
Publication statusPublished - May 2006
Externally publishedYes

Fingerprint

Phonons
Aromatic polymers
Elastic waves
Formaldehyde
Phenols
Resins
Acoustics
Semiconductor materials
Thin films
Crystals
phenol-formaldehyde resin

Keywords

  • Elastic waves
  • Localized modes
  • Polymers
  • Surface phonons

ASJC Scopus subject areas

  • Polymers and Plastics
  • Materials Chemistry

Cite this

Rafil, O., Tamine, M., Bourahla, B., Tigrine, R., Amoudache, S., & Khater, A. (2006). Phonons in polyacenic chains. Chinese Journal of Polymer Science (English Edition), 24(3), 229-236. https://doi.org/10.1142/S0256767906001242

Phonons in polyacenic chains. / Rafil, O.; Tamine, M.; Bourahla, B.; Tigrine, R.; Amoudache, S.; Khater, A.

In: Chinese Journal of Polymer Science (English Edition), Vol. 24, No. 3, 05.2006, p. 229-236.

Research output: Contribution to journalArticle

Rafil, O, Tamine, M, Bourahla, B, Tigrine, R, Amoudache, S & Khater, A 2006, 'Phonons in polyacenic chains', Chinese Journal of Polymer Science (English Edition), vol. 24, no. 3, pp. 229-236. https://doi.org/10.1142/S0256767906001242
Rafil O, Tamine M, Bourahla B, Tigrine R, Amoudache S, Khater A. Phonons in polyacenic chains. Chinese Journal of Polymer Science (English Edition). 2006 May;24(3):229-236. https://doi.org/10.1142/S0256767906001242
Rafil, O. ; Tamine, M. ; Bourahla, B. ; Tigrine, R. ; Amoudache, S. ; Khater, A. / Phonons in polyacenic chains. In: Chinese Journal of Polymer Science (English Edition). 2006 ; Vol. 24, No. 3. pp. 229-236.
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