Synthesis and photoresponsive behavior of a liquid-crystalline polymer with a 4-ring azotolane moiety with huge birefringence

Kunihiko Okano, Atsushi Shishido, Tomiki Ikeda

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A novel liquid-crystalline polymer (LCP) containing an azobenzene group directly connected to a tolane moiety (azotolane moiety) was synthesized. The LCP showed a nematic phase in a broad temperature range (200C). Trans-cis photoisomerization and cis-trans thermal isomerization occurred even though the LCP contains a long azotolane moiety. The homogeneously aligned film of the LCP exhibited an extremely large value of n (0.70 at 633nm). Upon irradiation with a pumping beam in the LC phase, a large change in n was induced due to destruction of the homogeneous alignment of the azotolane moieties.

Original languageEnglish
Pages (from-to)259-269
Number of pages11
JournalMolecular Crystals and Liquid Crystals
Volume478
Issue number1
DOIs
Publication statusPublished - 2007 Jan

Fingerprint

Liquid crystal polymers
Birefringence
birefringence
rings
polymers
synthesis
liquids
Photoisomerization
Azobenzene
Isomerization
isomerization
destruction
pumping
alignment
Irradiation
irradiation
Temperature
temperature

Keywords

  • Azotolane liquid-crystalline polymer
  • Change in birefringence
  • High birefringence
  • Photoisomerization

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Synthesis and photoresponsive behavior of a liquid-crystalline polymer with a 4-ring azotolane moiety with huge birefringence. / Okano, Kunihiko; Shishido, Atsushi; Ikeda, Tomiki.

In: Molecular Crystals and Liquid Crystals, Vol. 478, No. 1, 01.2007, p. 259-269.

Research output: Contribution to journalArticle

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