Theoretical analysis of the Raman spectra of PTV and PFV

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Author(s)

  • J. Y. Mevellec
  • J. P. Buisson
  • S. Lefrant
  • H. Eckhard
  • K. Y. Jen

Detail(s)

Original languageEnglish
Pages (from-to)209-213
Journal / PublicationSynthetic Metals
Volume35
Issue number1-2
Publication statusPublished - Feb 1990
Externally publishedYes

Abstract

In this work, we report experimental Raman and IR results obtained on two different polymers composed of heteroaromatic rings separated by a vinyl group, namely poly(thienylene vinylene) (PTV) and poly(furylene vinylene) (PFV). PTV and PFV exhibit a rather similar behaviour and, in particular, in both cases the observed Raman bands undergo a slight shift when the excitation wavelength is changed from 676.7 to 457.9 nm. By using a dynamical model based on valence force field calculations, we have assigned all IR and Raman modes. In order to obtain a good set of force constants, we started calculations by considering those of polythiophene and, also, we used a model compound such as trans-bis(2-thienyl)ethylene. It was found that the numerical values given for these force constants are consistent with the electronic structure usually assigned for these polymers. © 1990.

Citation Format(s)

Theoretical analysis of the Raman spectra of PTV and PFV. / Mevellec, J. Y.; Buisson, J. P.; Lefrant, S.; Eckhard, H.; Jen, K. Y.

In: Synthetic Metals, Vol. 35, No. 1-2, 02.1990, p. 209-213.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal