Preparation of crosslinked liquid-crystalline polymers by electron-beam irradiation and their photoinduced bending behavior

Yumiko Naka, Jun Ichi Mamiya, Atsushi Shishido, Masakazu Washio, Tomiki Ikeda

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

We proposed a new approach to fabricate bilayer films with a crosslinked azobenzene liquid-crystalline (LC) polymer. The polyethylene (PE) substrates were coated with linear azobenzene LC polymers, and then the azobenzene layers were crosslinked by irradiation with electron beams (EBs). In the EB-irradiated films with ordered azobenzene moieties, exposure to UV light caused trans-cis isomerization and the change in alignment of azobenzene moieties. Bending of the bilayer films could be induced toward an actinic light source when they were irradiated from the side of the azobenzene layer, while they bent away from the actinic light source upon UV irradiation from the side of the PE layer. In both cases, the bent films reverted to the initial flat state by turning off the light, which could be repeated at room temperature.

Original languageEnglish
Pages (from-to)71-79
Number of pages9
JournalMolecular Crystals and Liquid Crystals
Volume529
DOIs
Publication statusPublished - 2010 Jan 1

Keywords

  • Azobenzene
  • electron-beam crosslinking
  • liquid-crystalline polymer
  • photoinduced bending

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Preparation of crosslinked liquid-crystalline polymers by electron-beam irradiation and their photoinduced bending behavior'. Together they form a unique fingerprint.

Cite this