Interfacial conversion for poly(para-phenylenevinylene) at a cholesteric liquid crystal surface

Hiromasa Goto, Tomohisa Miyazawa, Keiichi Tomishige, Kimio Kunimori, Rafaël H.L. Kiebooms, Yuki Akiyama, Kazuo Akagi

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

A new approach for the preparation of poly (para-phenylenevinylene) (PPV) with an ordered structure is presented. PPV is synthesized by a precursor method using a cholesteric liquid crystal medium. The resultant PPV film is observed to have a cholesteric fingerprint-like texture, indicating replication of the cholesteric liquid crystal medium. Infrared absorption measurements confirm that the PPV has essentially the same molecular structure as normal PPV film. Ultraviolet-visible absorption measurements show that the absorption band due to π-π* transition of the conjugated main-chain is located at 402 nm. The conversion is found to occur at the interface with the cholesteric liquid crystal medium as a mechanical process.

Original languageEnglish
Pages (from-to)438-443
Number of pages6
JournalJournal of Applied Polymer Science
Volume107
Issue number1
DOIs
Publication statusPublished - 2008 Jan 5
Externally publishedYes

Keywords

  • Chiral
  • Films
  • Liquid crystals
  • UV-vis spectroscopy
  • π-conjugated polymers

ASJC Scopus subject areas

  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry

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