Photoinduced infrared absorptions from conjugated polymers with nondegenerate ground states

Yun Hwan Cha, Yukio Furukawa, Mitsuo Tasumi, Takanobu Noguchi, Toshihiro Ohnishi

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Photoinduced infrared absorptions from poly( p-phenylene), poly( p-phenylenevinylene), poly(2,5-dioctyloxy-p-phenylenevinylene) and poly(2,5-thienylenevinylene) have been measured using the FT-IR difference-spectrum method. The observed photoinduced bands are attributable to photo-generated charged species which give rise to giant infrared intensities. The excitation-power dependences of the photoinduced absorption intensities can be explained by means of the bimolecular recombination of the positive and negative polarons that are formed from a polaron pair (interchain charge-transfer exciton) generated by photoirradiation.

Original languageEnglish
Pages (from-to)159-163
Number of pages5
JournalChemical Physics Letters
Volume273
Issue number3-4
Publication statusPublished - 1997 Jul 18
Externally publishedYes

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Conjugated polymers
Infrared absorption
Ground state
infrared absorption
Gene Conversion
Polarons
ground state
polymers
polarons
Charge transfer
charge transfer
excitons
Infrared radiation
excitation
poly(4-phenylenevinylene)
LDS 751
poly-para-phenylene

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Atomic and Molecular Physics, and Optics

Cite this

Photoinduced infrared absorptions from conjugated polymers with nondegenerate ground states. / Cha, Yun Hwan; Furukawa, Yukio; Tasumi, Mitsuo; Noguchi, Takanobu; Ohnishi, Toshihiro.

In: Chemical Physics Letters, Vol. 273, No. 3-4, 18.07.1997, p. 159-163.

Research output: Contribution to journalArticle

Cha, YH, Furukawa, Y, Tasumi, M, Noguchi, T & Ohnishi, T 1997, 'Photoinduced infrared absorptions from conjugated polymers with nondegenerate ground states', Chemical Physics Letters, vol. 273, no. 3-4, pp. 159-163.
Cha, Yun Hwan ; Furukawa, Yukio ; Tasumi, Mitsuo ; Noguchi, Takanobu ; Ohnishi, Toshihiro. / Photoinduced infrared absorptions from conjugated polymers with nondegenerate ground states. In: Chemical Physics Letters. 1997 ; Vol. 273, No. 3-4. pp. 159-163.
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