Rod-like transition first or chain aggregation first? ordered aggregation of rod-like poly(: P-phenyleneethynylene) chains in solution

Yusuke Hattori, Nozomi Nishimura, Yusuke Tsutsui, Samrat Ghosh, Tsuneaki Sakurai, Kazunori Sugiyasu, Masayuki Takeuchi, Shu Seki

Research output: Contribution to journalArticlepeer-review

Abstract

The rod-like configuration of conjugated polymer chains with its low energetic disorder is the key to utilizing the backbone as a highly electrically-conductive wire. An energetic disorder that is higher than 0.1 eV, coupled with vibronic modes of the chains, leads to the localization of charges. Herein, we have tracked precisely the rod-like transition of poly(p-phenyleneethynylene) (PPE) chains as a function of temperature in diluted solutions, and shown a steep increase in persistence length at 230 K. The resulting rod-like configuration of the PPE chains with its extended electronic conjugation exhibited an extremely small energetic disorder of ∼70 meV, and was stabilized by subsequent polymer aggregate formation.

Original languageEnglish
Pages (from-to)13342-13345
Number of pages4
JournalChemical Communications
Volume55
Issue number89
DOIs
Publication statusPublished - 2019
Externally publishedYes

ASJC Scopus subject areas

  • Catalysis
  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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