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

doi:10.1002/app.27082

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 journal › Article › peer-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 language	English
Pages (from-to)	438-443
Number of pages	6
Journal	Journal of Applied Polymer Science
Volume	107
Issue number	1
DOIs	https://doi.org/10.1002/app.27082
Publication status	Published - 2008 Jan 5
Externally published	Yes

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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10.1002/app.27082

Cite this

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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.",

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AU - Goto, Hiromasa

AU - Miyazawa, Tomohisa

AU - Tomishige, Keiichi

AU - Kunimori, Kimio

AU - Kiebooms, Rafaël H.L.

AU - Akiyama, Yuki

AU - Akagi, Kazuo

PY - 2008/1/5

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AB - 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.

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KW - Films

KW - Liquid crystals

KW - UV-vis spectroscopy

KW - π-conjugated polymers

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

Abstract

Keywords

ASJC Scopus subject areas

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