Transfer of photoenergy in π-Conjugated polymers. Two types of photoluminescence that involve energy transfer along a polymer chain

Takakazu Yamamoto, Bang Lin Lee, Ismayil Nurulla, Takuma Yasuda, Isao Yamaguchi, Akihide Wada, Chiaki Hirose, Mitsuo Tasumi, Akira Sakamoto, Eiji Kobayashi

Research output: Contribution to journalArticle

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Abstract

Two types of energy transfer in π-conjugated polymers have been investigated using time-resolved photoluminescence (PL) techniques: type i, perpendicular-type energy transfer from the 2,3-di(p-tolyl)-quinoxaline unit to the π-conjugated main chain of poly[2,3-di(p-tolyl)quinoxaline-5,8-diyl], and type ii, parallel-type energy transfer from the oligo(pyridine-2,5-diyl) (O-Py) unit to the oligo(selenophene-2,5-diyl) (O-Se) unit in a block-type copolymer of O-Py and O-Se. Both types of energy transfer were very fast with a time constant shorter than approximately 0.1 ns; in particular, the type ii energy transfer took place with a time constant of approximately 5 ps. Both π-conjugated polymers were considered to contain segments with various effective π-conjugation lengths, and the energy transfer to the segment with a larger effective π-conjugation length and a smaller π-π* transition energy required a longer transition time. A polarizing film was obtained by utilizing the perpendicular-type energy transfer.

Original languageEnglish
Pages (from-to)10605-10610
Number of pages6
JournalJournal of Physical Chemistry B
Volume109
Issue number21
DOIs
Publication statusPublished - Jun 2 2005
Externally publishedYes

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Energy Transfer
Conjugated polymers
Energy transfer
Photoluminescence
Polymers
energy transfer
photoluminescence
polymers
quinoxalines
Quinoxalines
conjugation
time constant
Pyridine
pyridines
copolymers
Copolymers

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

Transfer of photoenergy in π-Conjugated polymers. Two types of photoluminescence that involve energy transfer along a polymer chain. / Yamamoto, Takakazu; Lee, Bang Lin; Nurulla, Ismayil; Yasuda, Takuma; Yamaguchi, Isao; Wada, Akihide; Hirose, Chiaki; Tasumi, Mitsuo; Sakamoto, Akira; Kobayashi, Eiji.

In: Journal of Physical Chemistry B, Vol. 109, No. 21, 02.06.2005, p. 10605-10610.

Research output: Contribution to journalArticle

Yamamoto, T, Lee, BL, Nurulla, I, Yasuda, T, Yamaguchi, I, Wada, A, Hirose, C, Tasumi, M, Sakamoto, A & Kobayashi, E 2005, 'Transfer of photoenergy in π-Conjugated polymers. Two types of photoluminescence that involve energy transfer along a polymer chain', Journal of Physical Chemistry B, vol. 109, no. 21, pp. 10605-10610. https://doi.org/10.1021/jp040624h
Yamamoto, Takakazu ; Lee, Bang Lin ; Nurulla, Ismayil ; Yasuda, Takuma ; Yamaguchi, Isao ; Wada, Akihide ; Hirose, Chiaki ; Tasumi, Mitsuo ; Sakamoto, Akira ; Kobayashi, Eiji. / Transfer of photoenergy in π-Conjugated polymers. Two types of photoluminescence that involve energy transfer along a polymer chain. In: Journal of Physical Chemistry B. 2005 ; Vol. 109, No. 21. pp. 10605-10610.
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