Photoresponsive stripe pattern in achiral azobenzene liquid crystals

Kunihiko Okano, Satoshi Aya, Fumito Araoka, Haruki Obara, Shiori Sato, Takashi Yamashita, Hideo Takezoe, Kouichi Asakura

Research output: Contribution to journalArticle

Abstract

A periodic stripe pattern is found in the nematic phase close to the smectic phase of photoresponsive achiral liquid-crystalline compounds. The origin of the stripe patterns can be ascribed to an extremely large bent elastic constant K33. In addition, we succeeded in controlling the pattern by the following two methods: 1) the stripe disappears by a trans-cis photoisomerization upon UV light irradiation and reappears upon light termination, and 2) the stripe pattern is stabilized over the whole nematic phase, at approximately 10 ° C, by polymerization of the compounds.

Original languageEnglish
Pages (from-to)95-98
Number of pages4
JournalChemPhysChem
Volume16
Issue number1
DOIs
Publication statusPublished - 2015 Jan 2

    Fingerprint

Keywords

  • Cybotactic cluster
  • Liquid crystals
  • Nematic phase
  • Photochemistry
  • Stripe pattern

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Physical and Theoretical Chemistry

Cite this

Okano, K., Aya, S., Araoka, F., Obara, H., Sato, S., Yamashita, T., Takezoe, H., & Asakura, K. (2015). Photoresponsive stripe pattern in achiral azobenzene liquid crystals. ChemPhysChem, 16(1), 95-98. https://doi.org/10.1002/cphc.201402578