Development of novel azobenzene derivatives showing a room temperature liquid-crystalline phase and their photoresponsive behavior

Kunihiko Okano, Yasuyuki Mikami, Yuji Shibata, Takashi Yamashita

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Novel azotolane derivatives containing various structures of alkyl chains have been synthesized via palladium-catalyzed cross coupling reactions as the key step. The thermotoropic liquid crystalline behavior of these compounds was investigated by polarizing optical microscopy, differential scanning calorimeter, and X-ray scattering, and the influences of the structure and position of the lateral alkyl chain on the mesomorphic properties were studied. Depending on the size or the structure of alkyl chains, different liquid crystalline phases were detected. Furthermore, we found that all compounds show trans-cis photoisomerization behavior upon irradiation of ultraviolet light, as well as a conventional azobenzene moiety.

Original languageEnglish
Pages (from-to)549-552
Number of pages4
JournalJournal of Photopolymer Science and Technology
Volume21
Issue number4
DOIs
Publication statusPublished - 2008 Sep 8

Keywords

  • Azobenzene
  • Hydrophilic group
  • Liquid crystal
  • Phenyl ethnylene
  • Photoisomerization

ASJC Scopus subject areas

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

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