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Photoresponsive supramolecular coordination polyelectrolyte as smart anticounterfeiting inks
Zhiqiang Li1, Xiao Liu2, Guannan Wang2
1Tianjin Key Laboratory of Chemical Process Safety, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, P. R. China. zhiqiangli@hebut.edu.cn.
Nature Communications
|March 2, 2021
Summary
Researchers developed a novel photoresponsive supramolecular coordination polyelectrolyte (SCP) for advanced anticounterfeiting. This material offers photoreversible luminescence switching, enabling secure, noninvasive information display for high-security applications.
Area of Science:
- Materials Science
- Supramolecular Chemistry
- Photochemistry
Background:
- Photoluminescence printing is a common anticounterfeiting method.
- Developing advanced materials with enhanced security remains a challenge.
Purpose of the Study:
- To construct a novel photoresponsive supramolecular coordination polyelectrolyte (SCP).
- To utilize the SCP as a security ink for advanced anticounterfeiting applications.
Main Methods:
- Hierarchical self-assembly of lanthanide ion, bis-ligand, and diarylethene unit.
- Utilizing metal-ligand coordination and ionic interactions for SCP construction.
- Employing photochromic fluorescence resonance energy transfer for luminescence switching.
Main Results:
- A photoresponsive SCP was successfully synthesized.
- Photoreversible luminescence on/off switching was achieved via diarylethene isomerization.
- The SCP demonstrated the ability to create multiple, switchable information patterns when used as security ink.
Conclusions:
- The developed SCP offers a new class of smart anticounterfeiting materials.
- The material enables noninvasive operation with a higher level of security.
- This approach advances the field of high-security anticounterfeiting technologies.
