Photoswitching properties of photonic band gap materials containing azo-polymer liquid crystal

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Photochemically tunable photonic band gap materials were prepared by infiltration of liquid crystal polymers having azobenzene groups into voids of SiO2 inverse opal films. Linearly polarized light irradiation resulted in transformation from a random to an anisotropic molecular orientation of azobenzene side chains in the voids of the SiO2 inverse opal film, leading to the reversible and stable shift of the reflection band to longer wavelength more than 15 nm. In order to improve switching properties, we used copolymers with azobenzene monomer and tolane monomer, which indicate higher birefringence, as infiltration materials into the voids. The azo-tolane copolymers were found to show the higher birefringence than azobenzene homopolymers by the linearly polarized light irradiation. Thus, the reflection band of the SiO2 inverse opal film infiltrated with the azo-tolane copolymers was shifted to long wavelength region more than 55 nm by the irradiation of linearly polarized light.

Original languageEnglish
Title of host publicationLiquid Crystals XII
DOIs
Publication statusPublished - Nov 12 2008
EventLiquid Crystals XII - San Diego, CA, United States
Duration: Aug 11 2008Aug 12 2008

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7050
ISSN (Print)0277-786X

Other

OtherLiquid Crystals XII
CountryUnited States
CitySan Diego, CA
Period8/11/088/12/08

Fingerprint

Azobenzene
Photonic band gap
Photonic Band Gap
Liquid crystal polymers
Liquid Crystal
polarized light
Copolymer
voids
copolymers
SiO2
Light polarization
Polymers
Voids
liquid crystals
Irradiation
photonics
infiltration
irradiation
birefringence
Infiltration

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Moritsugu, M., Shirota, T., Kubo, S., Kim, S. N., Ogata, T., Nonaka, T., ... Kurihara, S. (2008). Photoswitching properties of photonic band gap materials containing azo-polymer liquid crystal. In Liquid Crystals XII [705014] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7050). https://doi.org/10.1117/12.794633

Photoswitching properties of photonic band gap materials containing azo-polymer liquid crystal. / Moritsugu, Masaki; Shirota, Tomomi; Kubo, Shoichi; Kim, Sun Nam; Ogata, Tomonari; Nonaka, Takamasa; Sato, Osamu; Kurihara, Seiji.

Liquid Crystals XII. 2008. 705014 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7050).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Moritsugu, M, Shirota, T, Kubo, S, Kim, SN, Ogata, T, Nonaka, T, Sato, O & Kurihara, S 2008, Photoswitching properties of photonic band gap materials containing azo-polymer liquid crystal. in Liquid Crystals XII., 705014, Proceedings of SPIE - The International Society for Optical Engineering, vol. 7050, Liquid Crystals XII, San Diego, CA, United States, 8/11/08. https://doi.org/10.1117/12.794633
Moritsugu M, Shirota T, Kubo S, Kim SN, Ogata T, Nonaka T et al. Photoswitching properties of photonic band gap materials containing azo-polymer liquid crystal. In Liquid Crystals XII. 2008. 705014. (Proceedings of SPIE - The International Society for Optical Engineering). https://doi.org/10.1117/12.794633
Moritsugu, Masaki ; Shirota, Tomomi ; Kubo, Shoichi ; Kim, Sun Nam ; Ogata, Tomonari ; Nonaka, Takamasa ; Sato, Osamu ; Kurihara, Seiji. / Photoswitching properties of photonic band gap materials containing azo-polymer liquid crystal. Liquid Crystals XII. 2008. (Proceedings of SPIE - The International Society for Optical Engineering).
@inproceedings{c2f6e8c900844d819ab4f641b77ef04c,
title = "Photoswitching properties of photonic band gap materials containing azo-polymer liquid crystal",
abstract = "Photochemically tunable photonic band gap materials were prepared by infiltration of liquid crystal polymers having azobenzene groups into voids of SiO2 inverse opal films. Linearly polarized light irradiation resulted in transformation from a random to an anisotropic molecular orientation of azobenzene side chains in the voids of the SiO2 inverse opal film, leading to the reversible and stable shift of the reflection band to longer wavelength more than 15 nm. In order to improve switching properties, we used copolymers with azobenzene monomer and tolane monomer, which indicate higher birefringence, as infiltration materials into the voids. The azo-tolane copolymers were found to show the higher birefringence than azobenzene homopolymers by the linearly polarized light irradiation. Thus, the reflection band of the SiO2 inverse opal film infiltrated with the azo-tolane copolymers was shifted to long wavelength region more than 55 nm by the irradiation of linearly polarized light.",
author = "Masaki Moritsugu and Tomomi Shirota and Shoichi Kubo and Kim, {Sun Nam} and Tomonari Ogata and Takamasa Nonaka and Osamu Sato and Seiji Kurihara",
year = "2008",
month = "11",
day = "12",
doi = "10.1117/12.794633",
language = "English",
isbn = "9780819472700",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
booktitle = "Liquid Crystals XII",

}

TY - GEN

T1 - Photoswitching properties of photonic band gap materials containing azo-polymer liquid crystal

AU - Moritsugu, Masaki

AU - Shirota, Tomomi

AU - Kubo, Shoichi

AU - Kim, Sun Nam

AU - Ogata, Tomonari

AU - Nonaka, Takamasa

AU - Sato, Osamu

AU - Kurihara, Seiji

PY - 2008/11/12

Y1 - 2008/11/12

N2 - Photochemically tunable photonic band gap materials were prepared by infiltration of liquid crystal polymers having azobenzene groups into voids of SiO2 inverse opal films. Linearly polarized light irradiation resulted in transformation from a random to an anisotropic molecular orientation of azobenzene side chains in the voids of the SiO2 inverse opal film, leading to the reversible and stable shift of the reflection band to longer wavelength more than 15 nm. In order to improve switching properties, we used copolymers with azobenzene monomer and tolane monomer, which indicate higher birefringence, as infiltration materials into the voids. The azo-tolane copolymers were found to show the higher birefringence than azobenzene homopolymers by the linearly polarized light irradiation. Thus, the reflection band of the SiO2 inverse opal film infiltrated with the azo-tolane copolymers was shifted to long wavelength region more than 55 nm by the irradiation of linearly polarized light.

AB - Photochemically tunable photonic band gap materials were prepared by infiltration of liquid crystal polymers having azobenzene groups into voids of SiO2 inverse opal films. Linearly polarized light irradiation resulted in transformation from a random to an anisotropic molecular orientation of azobenzene side chains in the voids of the SiO2 inverse opal film, leading to the reversible and stable shift of the reflection band to longer wavelength more than 15 nm. In order to improve switching properties, we used copolymers with azobenzene monomer and tolane monomer, which indicate higher birefringence, as infiltration materials into the voids. The azo-tolane copolymers were found to show the higher birefringence than azobenzene homopolymers by the linearly polarized light irradiation. Thus, the reflection band of the SiO2 inverse opal film infiltrated with the azo-tolane copolymers was shifted to long wavelength region more than 55 nm by the irradiation of linearly polarized light.

UR - http://www.scopus.com/inward/record.url?scp=55549111228&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=55549111228&partnerID=8YFLogxK

U2 - 10.1117/12.794633

DO - 10.1117/12.794633

M3 - Conference contribution

AN - SCOPUS:55549111228

SN - 9780819472700

T3 - Proceedings of SPIE - The International Society for Optical Engineering

BT - Liquid Crystals XII

ER -