TY - JOUR
T1 - Photoswitching behavior of sio2 inverse opal films infiltrated with azo-tolane copolymer
T2 - Effect of polymer main chain structure
AU - Shirota, Tomomi
AU - Moritsugu, Masaki
AU - Kubo, Shoichi
AU - Ogata, Tomonari
AU - Nonaka, Takamasa
AU - Sato, Osamu
AU - Kurihara, Seiji
PY - 2009/1
Y1 - 2009/1
N2 - Phototunable photonic band gap materials were prepared by infiltration of a liquid crystalline azopolymer into voids of a SiO2 inverse opal film. Linearly polarized light irradiation resulted in a reversible and stable shift of the reflection band to longer wavelength region due to the transformation of azobenzene groups from random to anisotropic molecular orientation. Acrylate and methacrylate copolymers having both azobenzene and tolane groups in side chain have been synthesized in order to improve switching property. Upon irradiation of linearly polarized light SiO2 inverse opal film infiltrated with methacrylate copolymer showed a larger wavelength shift of the reflection band compared to that of the composite film infiltrated with acrylate copolymer.
AB - Phototunable photonic band gap materials were prepared by infiltration of a liquid crystalline azopolymer into voids of a SiO2 inverse opal film. Linearly polarized light irradiation resulted in a reversible and stable shift of the reflection band to longer wavelength region due to the transformation of azobenzene groups from random to anisotropic molecular orientation. Acrylate and methacrylate copolymers having both azobenzene and tolane groups in side chain have been synthesized in order to improve switching property. Upon irradiation of linearly polarized light SiO2 inverse opal film infiltrated with methacrylate copolymer showed a larger wavelength shift of the reflection band compared to that of the composite film infiltrated with acrylate copolymer.
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U2 - 10.1080/15421400903192889
DO - 10.1080/15421400903192889
M3 - Article
AN - SCOPUS:70449434032
SN - 1542-1406
VL - 513
SP - 79
EP - 88
JO - Molecular Crystals and Liquid Crystals
JF - Molecular Crystals and Liquid Crystals
ER -