journal article·2022-07

Integrating Photorewritable Fluorescent Information in Shape‐Memory Organohydrogel Toward Dual Encryption

Hui Shang, Xiaoxia Le, Yu Sun, Fuqing Shan, Shuangshuang Wu, Yinfei Zheng, Danyang Li, Dong Guo, Qingquan Liu, Tao Chen

Advanced Optical Materials· Volume 10· Issue 13
Publisher page

Abstract

Abstract As one of the severe global problems, counterfeiting information has brought a huge negative impact on every aspect of human society. Though various anticounterfeiting strategies, including fluorescent materials, are widely developed for dealing with the above problem, the information security level needs to be further improved due to sophisticated hacking techniques. In this study, an organohydrogel is designed by constructing interpenetrating organohydrogel networks, in which naphthalimide moieties (DEAN, green‐yellow emission) are introduced in hydrophilic poly(N,N‐dimethylacrylamide) (PDMA) hydrogel network and anthracene units (blue emission) are copolymerized in hydrophobic polystearate methacrylate (PSMA) organogel network. Triggered by UV light of 365 nm, the unimer–dimer transition occurs and leads the fluorescent color of organohydrogel to change from blue to faint yellow, making secret information be stored with the assistance of photomasks. Furthermore, by combining crystallization‐induced shape memory performance, dual encryption can be achieved. This fluorescent organohydrogel provides a new idea for fabricating smart materials with the ability of encryption–decryption, which is of great significance in information security protection.
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Research context

OpenAlex topics: Luminescence and Fluorescent Materials · Supramolecular Self-Assembly in Materials · Photochromic and Fluorescence Chemistry

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Key Laboratory of Marine Materials and Related Technologies Zhejiang Key Laboratory of Marine Materials and Protective Technologies Ningbo Institute of Material Technology and Engineering Chinese Academy of Sciences Ningbo 315201 China

Nano Science and Technology Institute University of Science and Technology of China No. 166 Renai Road Suzhou 215000 China

School of Chemical Sciences University of Chinese Academy of Sciences 19A Yuquan Road Beijing 100049 China

Research Center for Intelligent Sensing Zhejiang Lab No. 1818 West Wenyi Road, Yuhang District Hangzhou 311100 China

College of Biomedical Engineering and Instrument Science Key Laboratory for Biomedical Engineering of Ministry of Education Ministry of China Zhejiang University Hangzhou 310027 China

School of Materials Science and Technology Hunan Provincial Key Laboratory of Advanced Materials for New Energy Storage and Conversion Hunan University of Science and Technology Xiangtan 411201 China

Funding

National Natural Science Foundation of China · National Key Research and Development Program of China · Key Research Program of Frontier Science, Chinese Academy of Sciences

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