Dynamic studies of conjugated polymers by phase-modulation IR-spectroscopy

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4 Citations (Scopus)

Abstract

The application of phase-modulation infrared spectroscopy to the photoexcitation dynamics of conjugated polymers is described. The modulation-frequency dependencies of the intensity and phase delay of photoinduced absorption have been observed and simulated numerically on the basis of a model based on second-order kinetics involving a neutralization process between the positive and negative charge carriers (polarons) that are formed from a photogenerated interchain charge-transfer exciton (polaron pair). The rate constant of the bimolecular recombination process has been obtained. This numerical simulation is useful in analyzing the observed responses of a nonlinear system in the phase-modulation measurements.

Original languageEnglish
Pages (from-to)77-83
Number of pages7
JournalVibrational Spectroscopy
Volume19
Issue number1
DOIs
Publication statusPublished - 1999 Feb
EventProceedings of the 1998 3rd International Symposium on Advanced Infrared and Raman Spectroscopy, AIRS III - Vienna, Austria
Duration: 1998 Jul 51998 Jul 9

Keywords

  • Conjugated polymers
  • Phase-modulation infrared spectroscopy
  • Photoexcitation dynamics

ASJC Scopus subject areas

  • Spectroscopy

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