A Photoisomerizable Chiral Dopant for Fast and Precise Controlling the Reflection Band of the CLCN Film.

IF 3.5 3区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY
Xingchen Liu, Limin Wu, Yi Li, Wei Liu, Yonggang Yang
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引用次数: 0

Abstract

Colorful cholesteric liquid crystal polymer network (CLCN) patterns have been applied for decoration and anti-counterfeiting. Generally, the handedness of the reflected lights is the same. In this paper, a chiral dopant derived from cyanostilbene is synthesized. Due to the isomerization and [2 + 2] photocycloaddition under the irradiation of the 365-nm UV light, it exhibits a great change in the helical twisting power. The cholesteric liquid crystal mixture prepared using this chiral dopant can be applied for rapid optical recording. Colorful CLCN patterns are also prepared, which can reflect both left- and right-handed circularly polarized lights. Namely, different patterns are observed through left- and right-handed circular polarizers. Due to the luminescent property of the chiral dopant and its isomers, circularly polarized luminescence is emitted from the CLCN films.

一种快速精确控制CLCN薄膜反射带的光异构手性掺杂剂。
彩色胆甾型液晶聚合物网络(CLCN)图案已被应用于装饰和防伪。一般来说,反射光的旋向性是相同的。本文合成了一种以氰二苯乙烯为原料的手性掺杂剂。由于在365nm紫外光照射下的异构化和[2 + 2]光环加成作用,其螺旋扭力发生了很大的变化。用该手性掺杂剂制备的胆甾酯液晶混合物可用于快速光学记录。制备了彩色的CLCN图案,可以同时反射左旋和右旋圆偏振光。也就是说,通过左旋和右旋圆偏振器可以观察到不同的模式。由于手性掺杂剂及其异构体的发光特性,CLCN薄膜发出圆极化发光。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Chemistry - An Asian Journal
Chemistry - An Asian Journal 化学-化学综合
CiteScore
7.00
自引率
2.40%
发文量
535
审稿时长
1.3 months
期刊介绍: Chemistry—An Asian Journal is an international high-impact journal for chemistry in its broadest sense. The journal covers all aspects of chemistry from biochemistry through organic and inorganic chemistry to physical chemistry, including interdisciplinary topics. Chemistry—An Asian Journal publishes Full Papers, Communications, and Focus Reviews. A professional editorial team headed by Dr. Theresa Kueckmann and an Editorial Board (headed by Professor Susumu Kitagawa) ensure the highest quality of the peer-review process, the contents and the production of the journal. Chemistry—An Asian Journal is published on behalf of the Asian Chemical Editorial Society (ACES), an association of numerous Asian chemical societies, and supported by the Gesellschaft Deutscher Chemiker (GDCh, German Chemical Society), ChemPubSoc Europe, and the Federation of Asian Chemical Societies (FACS).
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