Polarized reflectivity spectra of stretch-oriented poly(p-phenylene-vinylene)

D. Comoretto*, G. Dellepiane, D. Moses, J. Cornil, D. A. Dos Santos, Jean-Luc Bredas

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

We report polarized, near-normal incidence, absolute reflectivity spectra of highly stretch-oriented unsubstituted poly(p-phenylene-vinylene). The data show a well-resolved vibronic progression in the lowest optical transition, a high dichroic ratio and weak signals due to conjugated segments with reduced effective conjugation length. On the high-energy side of the spectra, other transitions mainly related to excited states involving localized levels are detected. The low-temperature spectra confirm these assignments. The polarization properties of the reflectivity spectra are discussed in relation to correlated quantum-chemical calculations.

Original languageEnglish (US)
Pages (from-to)1-7
Number of pages7
JournalChemical Physics Letters
Volume289
Issue number1-2
DOIs
StatePublished - Jun 5 1998

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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