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- Title
Orthogonally Integrating Programmable Structural Color and Photo‐Rewritable Fluorescence in Hydrazone Photoswitch‐bonded Cholesteric Liquid Crystalline Network.
- Authors
Lan, Ruochen; Bao, Jinying; Li, Zhaozhong; Wang, Zizheng; Song, Chenjie; Shen, Chen; Huang, Rui; Sun, Jian; Wang, Qian; Zhang, Lanying; Yang, Huai
- Abstract
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.
- Subjects
STRUCTURAL colors; FLUORESCENCE; DATA encryption; HUMIDITY; THERMAL stability
- Publication
Angewandte Chemie, 2022, Vol 134, Issue 50, p1
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.202213915