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Carboxymethylcellulose hydrogels with stable carbon quantum dots: Enabling dynamic fluorescence modulation, automatic
Qiuyan Luo1, Hao Liu1, Dongxu Li1
1College of Materials, Fujian Provincial Key Laboratory of Fire Retardant Materials, Xiamen Key Laboratory of Fire Retardant Materials, Xiamen University, Xiamen 361005, China.
Carbohydrate Polymers
|December 23, 2023
Summary
This study presents a novel time-modulated encryption hydrogel using carboxymethyl cellulose and carbon quantum dots. The hydrogel enables secure information encryption and decryption triggered by pH, EDTA, and Cr(VI) for advanced material applications.
Area of Science:
- Materials Science
- Chemistry
- Nanotechnology
Background:
- Development of stimuli-responsive materials for information security.
- Need for advanced encryption methods with tunable properties.
Purpose of the Study:
- To synthesize a time-modulated encryption hydrogel.
- To investigate its encryption/decryption capabilities based on external stimuli.
- To elucidate the fluorescence quenching mechanism.
Main Methods:
- Synthesis of hydrogel using carboxymethyl cellulose and carbon quantum dots.
- Stimuli-responsive encryption/decryption using pH, EDTA, and Cr(VI).
- Fluorescence spectroscopy for mechanism analysis.
Main Results:
- Successful synthesis of a stable hydrogel system.
- Demonstrated encryption/decryption controlled by pH, EDTA, and Cr(VI).
- Identified fluorescence quenching mechanisms including internal filtering and static quenching.
Conclusions:
- The synthesized hydrogel exhibits effective time-modulated encryption capabilities.
- The mechanism involves interactions with functional groups and external stimuli.
- Potential applications in secure data storage and smart materials.
