Functional enzyme-metal nanogel for efficient glucose detection using interface supramolecular adhesion and...

Area of Science:

• Biomedical Engineering
• Nanotechnology
• Analytical Chemistry

Background:

• Glucose concentration is vital for human health.
• Current nanogel glucose detection methods lack sensitivity, selectivity, and long-term stability.
• Developing advanced glucose sensors is crucial for health monitoring.

Purpose of the Study:

• To synthesize a novel cyclodextrin-based multi-functional nanogel for enhanced glucose detection.
• To improve the sensitivity, selectivity, and in vivo stability of glucose detection systems.
• To establish a new Fe-based nanogel strategy for glucose sensing.

Main Methods:

• Synthesized a multi-functional nanogel incorporating glucose oxidase (GOx), chitosan (CS), and β-cyclodextrin (β-CD).
• Utilized Fe ion coordination within the nanogel for structural stability and enhanced catalysis.
• Employed cascade catalysis involving GOx and Fe nanoparticles to boost detection sensitivity.
• Confirmed host-guest interaction between β-CD and glucose using 1H nuclear magnetic resonance for selectivity.

Main Results:

• The Fe-based nanogel demonstrated enhanced sensitivity through cascade catalysis.
• β-cyclodextrin's host-guest interaction with glucose improved catalytic selectivity.
• Fe ion coordination ensured structural stability for long-term in vivo detection.
• The synthesized nanogel offers a promising new method for glucose detection.

Conclusions:

• The Fe-based nanogel strategy represents a significant advancement in glucose detection technology.
• This approach addresses key limitations of existing nanogel glucose sensors.
• The developed nanogel shows potential for reliable and stable long-term glucose monitoring.