Photo-induced photonic band gap shift of SiO2 inverse opal films infiltrated by azo-tolane copolymer

Tomomi Shirota, Masaki Moritsugu, Shoichi Kubo, Tomonari Ogata, Takamasa Nonaka, Osamu Sato, Seiji Kurihara

Research output: Contribution to journalArticlepeer-review

Abstract

Photochemically tunable photonic band gap materials were prepared by the infiltration of liquid crystal polymers with azobenzene side chains and tolane side chains indicating larger birefringence into voids of SiO2 inverse opal films. Linearly polarized light irradiation resulted in transformation from random to anisotropic molecular orientation of azobenzene and tolane side chains, then the azobenzene-tolane copolymer film showed larger birefringence. Thus, the reflection band of the SiO2 inverse opal films infiltrated with the azobenzene-tolane copolymers was shifted to longer wavelength region by the irradiation of linearly polarized light.

Original languageEnglish
Pages (from-to)174-181
Number of pages8
JournalMolecular crystals and liquid crystals
Volume516
DOIs
Publication statusPublished - 2010 Jan

Keywords

  • Azobenzene
  • Birefringence
  • Photonic crystal
  • Tolane

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'Photo-induced photonic band gap shift of SiO<sub>2</sub> inverse opal films infiltrated by azo-tolane copolymer'. Together they form a unique fingerprint.

Cite this