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可编程结构颜色和光可重写荧光在腙光开关结合胆甾液晶网络中的正交整合
作者:小柯机器人 发布时间:2022/11/5 13:29:24

北京大学杨槐团队报道可编程结构颜色和光可重写荧光在腙光开关结合胆甾液晶网络中的正交整合。相关研究成果发表在2022年10月19日出版的国际知名学术期刊《德国应用化学》。

先进安全标签的设计和制造在信息存储和数据加密方面表现出优异性能,吸引了巨大的科学兴趣。特别是,能够以不同模式存储不同信息的多功能光学标签是非常需要的,但具有挑战性。

该文中,明智地设计和制备了具有可编程可见图案和可光重写荧光图案的荧光胆甾型液晶网络(CLCN)膜。可见图案由螺旋网络固定,可见图案的颜色可通过改变相对湿度(RH)在可见范围内调节。荧光模式源于荧光腙分子的动态异构化,表现出高度的热稳定性和由远程光照射控制的开关能力。可见图案和荧光图案的正交构造使新型CLCN能够在反射模式和发射模式下加密独特的动态信息,这表明其在防伪、信息存储和加密等应用中的潜力。

附:英文原文

Title: Orthogonally Integrating Programmable Structural Color and Photo-rewritable Fluorescence in Hydrazone Photoswitch-bonded Cholesteric Liquid Crystalline Network

Author: Ruochen Lan, Jinying Bao, Zhaozhong Li, Zizheng Wang, Chenjie Song, Chen Shen, Rui Huang, Jian Sun, Qian Wang, lanying Zhang, Huai Yang

Issue&Volume: 2022-10-19

Abstract: Design and fabrication of advanced security label showing superior performance in information storage and data encryption has attracted tremendous scientific interests. Especially, multifunctional optical labels capable of storing distinct information in different modes are highly demanded but challenging. Here, a fluorescent cholesteric liquid crystalline network (CLCN) film with programmable visible patterns and photo-rewritable fluorescent patterns was judiciously designed and prepared. The visible patterns were fixed by helical network and the colors of visible patterns were tunable over visible range by changing relative humidity (RH). The fluorescence patterns originated from dynamic isomerization of fluorescent hydrazone molecules, exhibiting highly thermal stability and switching-ability controlled by remote light irradiation. The orthogonal construction of visible pattern and fluorescent pattern enabled the novel CLCN to encrypt distinctive dynamic information in reflective mode and in emissive mode, indicating the potential in applications including anti-counterfeiting, information storages and encryptions.

DOI: 10.1002/anie.202213915

Source: https://onlinelibrary.wiley.com/doi/10.1002/anie.202213915

期刊信息

Angewandte Chemie:《德国应用化学》,创刊于1887年。隶属于德国化学会,最新IF:12.959
官方网址:https://onlinelibrary.wiley.com/journal/15213773
投稿链接:https://www.editorialmanager.com/anie/default.aspx