Preparation of Cholesteric Polymer Networks with Narrow-Bandwidth Reflection and Memory Effect
A polymer network with a memory effect based on a polymer-stabilized narrow-bandwidth cholesteric liquid crystal (CLC) was prepared using the washing-out/refill method. The effects of different polymerization conditions on the reflection properties of CLC films were investigated. Meanwhile, the sele...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-05-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/13/5/787 |
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| author | Zhe Xing Lulu Xue Yinjie Chen Wenguan Zhang Zhong Zhou Luhai Li Yuchen Cui Yanan Guo Yifan Chang Binbin Li |
| author_facet | Zhe Xing Lulu Xue Yinjie Chen Wenguan Zhang Zhong Zhou Luhai Li Yuchen Cui Yanan Guo Yifan Chang Binbin Li |
| author_sort | Zhe Xing |
| collection | DOAJ |
| description | A polymer network with a memory effect based on a polymer-stabilized narrow-bandwidth cholesteric liquid crystal (CLC) was prepared using the washing-out/refill method. The effects of different polymerization conditions on the reflection properties of CLC films were investigated. Meanwhile, the selective reflection property and narrow-bandwidth reflection memory effect of the polymer network were proved, and the response mechanism was provided. Furthermore, different materials from liquid crystals, with an anisotropic refractive index, to toluene, with an isotropic refractive index, were refilled to polymer scaffolds with helical structures, which originated from the periodic arrangement of CLCs. It was confirmed that the reflection bandwidth of these films can be dramatically narrowed by the reduced birefringence (Δn) of the refilled materials. The narrowest bandwidth of 22.5 nm refilling toluene with an isotropic refractive index (Δn = 0) was obtained. These results may provide a novel idea for flexible reflective displays, color filters, printing, and colored cladding of a variety of objects. |
| first_indexed | 2024-03-11T03:49:46Z |
| format | Article |
| id | doaj.art-7d228b2d2318457090cd94209e79a36b |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-11T03:49:46Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-7d228b2d2318457090cd94209e79a36b2023-11-18T00:59:55ZengMDPI AGCrystals2073-43522023-05-0113578710.3390/cryst13050787Preparation of Cholesteric Polymer Networks with Narrow-Bandwidth Reflection and Memory EffectZhe Xing0Lulu Xue1Yinjie Chen2Wenguan Zhang3Zhong Zhou4Luhai Li5Yuchen Cui6Yanan Guo7Yifan Chang8Binbin Li9School of Precision Instrument and Optoelectronics Engineering, Institute of Laser and Optoelectronics, Tianjin University, Tianjin 300072, ChinaBeijing Engineering Research Center of Printed Electronics, Beijing Institute of Graphic Communication, Beijing 102600, ChinaBeijing Engineering Research Center of Printed Electronics, Beijing Institute of Graphic Communication, Beijing 102600, ChinaBeijing Engineering Research Center of Printed Electronics, Beijing Institute of Graphic Communication, Beijing 102600, ChinaBeijing Engineering Research Center of Printed Electronics, Beijing Institute of Graphic Communication, Beijing 102600, ChinaBeijing Engineering Research Center of Printed Electronics, Beijing Institute of Graphic Communication, Beijing 102600, ChinaBeijing Engineering Research Center of Printed Electronics, Beijing Institute of Graphic Communication, Beijing 102600, ChinaBeijing Engineering Research Center of Printed Electronics, Beijing Institute of Graphic Communication, Beijing 102600, ChinaBeijing Engineering Research Center of Printed Electronics, Beijing Institute of Graphic Communication, Beijing 102600, ChinaBeijing Engineering Research Center of Printed Electronics, Beijing Institute of Graphic Communication, Beijing 102600, ChinaA polymer network with a memory effect based on a polymer-stabilized narrow-bandwidth cholesteric liquid crystal (CLC) was prepared using the washing-out/refill method. The effects of different polymerization conditions on the reflection properties of CLC films were investigated. Meanwhile, the selective reflection property and narrow-bandwidth reflection memory effect of the polymer network were proved, and the response mechanism was provided. Furthermore, different materials from liquid crystals, with an anisotropic refractive index, to toluene, with an isotropic refractive index, were refilled to polymer scaffolds with helical structures, which originated from the periodic arrangement of CLCs. It was confirmed that the reflection bandwidth of these films can be dramatically narrowed by the reduced birefringence (Δn) of the refilled materials. The narrowest bandwidth of 22.5 nm refilling toluene with an isotropic refractive index (Δn = 0) was obtained. These results may provide a novel idea for flexible reflective displays, color filters, printing, and colored cladding of a variety of objects.https://www.mdpi.com/2073-4352/13/5/787cholesteric liquid crystalpolymer networkmemory effectnarrow-bandwidth |
| spellingShingle | Zhe Xing Lulu Xue Yinjie Chen Wenguan Zhang Zhong Zhou Luhai Li Yuchen Cui Yanan Guo Yifan Chang Binbin Li Preparation of Cholesteric Polymer Networks with Narrow-Bandwidth Reflection and Memory Effect Crystals cholesteric liquid crystal polymer network memory effect narrow-bandwidth |
| title | Preparation of Cholesteric Polymer Networks with Narrow-Bandwidth Reflection and Memory Effect |
| title_full | Preparation of Cholesteric Polymer Networks with Narrow-Bandwidth Reflection and Memory Effect |
| title_fullStr | Preparation of Cholesteric Polymer Networks with Narrow-Bandwidth Reflection and Memory Effect |
| title_full_unstemmed | Preparation of Cholesteric Polymer Networks with Narrow-Bandwidth Reflection and Memory Effect |
| title_short | Preparation of Cholesteric Polymer Networks with Narrow-Bandwidth Reflection and Memory Effect |
| title_sort | preparation of cholesteric polymer networks with narrow bandwidth reflection and memory effect |
| topic | cholesteric liquid crystal polymer network memory effect narrow-bandwidth |
| url | https://www.mdpi.com/2073-4352/13/5/787 |
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