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Photoresponsive Luminescent Polymeric Hydrogels for Reversible Information Encryption and Decryption
Zhiqiang Li1, Hongzhong Chen2, Bin Li1
1National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization Tianjin Key Laboratory of Chemical Process Safety School of Chemical Engineering and Technology Hebei University of Technology Guangrong Dao 8, Hongqiao District Tianjin 300130 P. R. China.
Researchers developed novel hybrid hydrogels with switchable luminescence for secure information protection. These materials enable reversible encryption and decryption of confidential data using light, offering enhanced security applications.
Area of Science:
- Materials Science
- Photochemistry
- Polymer Chemistry
Background:
- Conventional luminescent materials lack security features for confidential information protection due to constant visibility.
- Need for advanced materials with controllable luminescence for secure data encoding and hiding.
Purpose of the Study:
- To develop light-triggered, luminescence ON-OFF switchable hybrid hydrogels.
- To create a platform for reversible information encryption and decryption using smart hydrogels.
Main Methods:
- In situ copolymerization of acrylamide, lanthanide complex, and diarylethene photochromic units.
- Utilizing UV and visible light to control diarylethene ring behavior and luminescence.
- Constructing 3D information codes using hydrogel blocks with tunable emission colors.
Main Results:
- Successfully constructed hybrid hydrogels with light-switchable luminescence.
- Demonstrated reversible luminescence quenching and recovery via UV and visible light.
- Achieved tunable emission colors for 3D information encoding and secure readout under UV light.
Conclusions:
- The developed hydrogels offer a novel approach for smart confidential information protection.
- Reversible ON-OFF switching of luminescence enables secure, multi-level data encryption and decryption.
- Potential applications in anti-counterfeiting, secure data storage, and smart displays.
