Advanced Optical Materials, volume 9, issue 9, pages 2100053

Photoalignment in Polysiloxane Liquid‐Crystalline Elastomers with Rearrangeable Networks

Ube Toru 1
Tsunoda Haruna 1
Kawasaki Kyohei 1
IKEDA T 1, 2
1
 
Research and Development Initiative Chuo University 1‐13‐27, Kasuga, Bunkyo‐ku Tokyo 112‐8551 Japan
2
 
Technical Institute of Physics and Chemistry Chinese Academy of Sciences 29 Zhongguancun East Road Beijing 100190 China
Publication typeJournal Article
Publication date2021-02-16
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor9
ISSN21951071
Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Abstract
Molecular alignment in liquid‐crystalline elastomers with polysiloxane backbone is controlled with the aid of photoalignment and exchangeable links to enhance performance as photoactuators. The photoalignment is triggered by trans‐cis‐trans isomerization of azobenzene moieties, which are introduced at crosslinking points, upon irradiation with linearly polarized UV (LPUV) light under heating. The induced alignment is memorized by rearrangement of network structures through exchange reactions of covalent bonds. When irradiated with LPUV light, freestanding films show bending along with the alignment change in surface regions. Macroscopic shapes are also rememorized by exchange reactions at crosslinks. Combination of photoalignment and network rearrangement allows continuous deformation of freestanding films upon exposure to LPUV light with varying polarization directions. This approach enhances the degree of freedom in alignment control, photoactuation, and reshaping of polysiloxane‐based liquid‐crystalline elastomers, which are feasible as soft actuators.

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Ube T. et al. Photoalignment in Polysiloxane Liquid‐Crystalline Elastomers with Rearrangeable Networks // Advanced Optical Materials. 2021. Vol. 9. No. 9. p. 2100053.
GOST all authors (up to 50) Copy
Ube T., Tsunoda H., Kawasaki K., IKEDA T. Photoalignment in Polysiloxane Liquid‐Crystalline Elastomers with Rearrangeable Networks // Advanced Optical Materials. 2021. Vol. 9. No. 9. p. 2100053.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1002/adom.202100053
UR - https://doi.org/10.1002%2Fadom.202100053
TI - Photoalignment in Polysiloxane Liquid‐Crystalline Elastomers with Rearrangeable Networks
T2 - Advanced Optical Materials
AU - Tsunoda, Haruna
AU - Kawasaki, Kyohei
AU - Ube, Toru
AU - IKEDA, T
PY - 2021
DA - 2021/02/16 00:00:00
PB - Wiley
SP - 2100053
IS - 9
VL - 9
SN - 2195-1071
ER -
BibTex |
Cite this
BibTex Copy
@article{2021_Ube,
author = {Haruna Tsunoda and Kyohei Kawasaki and Toru Ube and T IKEDA},
title = {Photoalignment in Polysiloxane Liquid‐Crystalline Elastomers with Rearrangeable Networks},
journal = {Advanced Optical Materials},
year = {2021},
volume = {9},
publisher = {Wiley},
month = {feb},
url = {https://doi.org/10.1002%2Fadom.202100053},
number = {9},
pages = {2100053},
doi = {10.1002/adom.202100053}
}
MLA
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MLA Copy
Ube, Toru, et al. “Photoalignment in Polysiloxane Liquid‐Crystalline Elastomers with Rearrangeable Networks.” Advanced Optical Materials, vol. 9, no. 9, Feb. 2021, p. 2100053. https://doi.org/10.1002%2Fadom.202100053.
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