An Optoelectronic Sensing Real-Time Glucose Detection Film Using Photonic Crystal Enhanced Rare Earth Fluorescence...

Area of Science:

• Biomarker Detection
• Nanomaterials Science
• Analytical Chemistry

Background:

• Accurate glucose detection is crucial for managing diabetes and other metabolic disorders.
• Existing methods face challenges with sensitivity, environmental interference, and portability.
• Novel nanomaterials offer potential for enhanced biosensing capabilities.

Purpose of the Study:

• To develop a novel dual-responsive nanoparticle material for sensitive glucose detection.
• To enhance the sensitivity and accuracy of glucose detection methods.
• To create a portable platform for fluid biomarker analysis.

Main Methods:

• Synthesized a rare-earth upconversion nanoparticle (UCNP) core coated with MnO2 nanosheets (MnO2-modified NaYF4:Yb,Tm@NaYF4).
• Utilized a photonic crystals (PCs)-PDMS array for signal amplification and background reduction.
• Developed a portable fluorescence intensity detection device.

Main Results:

• The MnO2-modified UCNP composite exhibited colorimetric and fluorescence dual-responsiveness for glucose detection.
• The PCs-PDMS array improved detection sensitivity to 1.2 µm with a wide linear range (20-800 µm).
• The developed platform demonstrated high accuracy, stability, and resistance to environmental interference.

Conclusions:

• The novel dual-responsive UCNP material and PCs-PDMS array significantly enhance glucose detection sensitivity and accuracy.
• The portable detection device offers a promising solution for on-site fluid biomarker analysis.
• This research opens new avenues for developing advanced biosensors in clinical diagnostics.