光电开关
荧光
腙
材料科学
加密
可见光谱
光电子学
纳米技术
光化学
计算机科学
光学
化学
物理
立体化学
操作系统
作者
Ruochen Lan,Jinying Bao,Zhaozhong Li,Zizheng Wang,Chenjie Song,Chen Shen,Rui Huang,Jian Sun,Qian Wang,Lanying Zhang,Huai Yang
标识
DOI:10.1002/anie.202213915
摘要
Design and fabrication of advanced security label showing superior performance in data encryption has attracted tremendous scientific interests. Especially, multifunctional optical labels capable of storing distinct information in different modes are highly demanded. Here, a fluorescent cholesteric liquid crystalline network (CLCN) film with programmable visible patterns and photo-rewritable fluorescent patterns was designed and prepared. The visible patterns were fixed by helical network and the colors of visible patterns were tunable by changing relative humidity (RH). The fluorescent patterns originated from dynamic isomerization of fluorescent hydrazones, exhibiting highly thermal stability and switching-ability controlled by light. The orthogonal construction of visible and fluorescent pattern enabled the novel CLCN to encrypt distinct information in reflective mode and in emissive mode, indicating its potential in anti-counterfeiting and information encryptions.
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