Phase-modulation measurements of photoinduced infrared absorptions from polythiophene

Nami Yokonuma, Yukio Furukawa*, Mitsuo Tasumi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


The magnitude and phase delay of the photoinduced infrared absorption bands of polythiophene have been measured at 78 K with a sinusoidal intensity-modulation of 514.5 nm laser light. All the photoinduced bands show the same response in magnitude and phase delay to the external stimulus. The magnitudes of the photoinduced bands show an approximate f 0.6 dependence on the modulation frequency above 1.25 kHz. The micro- to millisecond photoexcitation dynamics are discussed.

Original languageEnglish
Pages (from-to)25-30
Number of pages6
JournalJournal of Molecular Structure
Issue number1-3
Publication statusPublished - 1996
Externally publishedYes


  • Infrared absorption
  • Phase-modulation
  • Photoinduced
  • Polythiophene

ASJC Scopus subject areas

  • Analytical Chemistry
  • Spectroscopy
  • Organic Chemistry
  • Inorganic Chemistry


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