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Multi-Responsive Lanthanide-Based Hydrogel with Encryption, Naked Eye Sensing, Shape Memory, Self-Healing, and
Qi Zhou1, Xuelin Dong1,2, Yuxiang Xiong2
1Key Laboratory of Materials Chemistry for Energy Conversion and Storage of the Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
ACS Applied Materials & Interfaces
|June 4, 2020
Summary
This study introduces a novel multi-responsive luminescent hydrogel (GA/CCS/DNSA/Eu3+) capable of encryption, glucose sensing, and self-healing. The material demonstrates tunable properties for advanced applications in sensing and biomedicine.
Area of Science:
- Materials Science
- Polymer Chemistry
- Biomedical Engineering
Background:
- Developing advanced hydrogels with multiple functionalities is crucial for innovative applications.
- Stimuli-responsive materials offer dynamic properties for sensing and adaptive systems.
- Existing hydrogels often lack a combination of sensing, self-healing, and antibacterial capabilities.
Purpose of the Study:
- To synthesize and characterize a multi-responsive luminescent hydrogel.
- To investigate the hydrogel's capabilities for information encryption, glucose sensing, shape memory, self-healing, and antibacterial activity.
- To explore potential applications in anticounterfeiting, wearable devices, and biomedicine.
Main Methods:
- A facile heating-cooling process was employed to synthesize the GA/CCS/DNSA/Eu3+ hydrogel.
- The hydrogel's responsiveness to temperature, pH, salt, and redox stimuli was evaluated.
- Properties such as luminescence, mechanical strength, shape memory, self-healing, and antibacterial activity were assessed.
Main Results:
- The synthesized hydrogel exhibited reversible luminescence, color, and phase changes in response to various stimuli.
- Demonstrated capabilities include information encryption/decryption, naked-eye glucose sensing, shape memory effect, and enhanced mechanical properties.
- The hydrogel showed significant self-healing capacity and antibacterial activity against tested pathogens.
Conclusions:
- The GA/CCS/DNSA/Eu3+ hydrogel is a versatile material with a unique combination of stimuli-responsive and functional properties.
- The dynamic bonds within the hydrogel facilitate self-healing and contribute to its mechanical robustness.
- This advanced hydrogel holds significant promise for applications in anticounterfeiting, smart sensors, and biomedical fields.
