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Self-Powered Wireless Galvanic ECL Platform for On-Site Glutathione Detection.

Govindha Pandi Rajaram1,2, Shanmugam Senthil Kumar1,2

  • 1Electrodics and Electrocatalysis Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi 630 003, Tamil Nadu, India.

ACS Applied Materials & Interfaces
|March 31, 2026
PubMed
Summary

This study introduces a self-powered electrochemiluminescence (ECL) sensor using galvanized copper foam. This innovative biosensor enables sensitive detection of the Parkinson's disease biomarker reduced glutathione (GSH) without external power.

Keywords:
GSHParkinson’s diseaseSelf-powered wireless ECLgalvanized Cu foamonsite detectionstress biomarker

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Area of Science:

  • Electrochemistry
  • Biosensing
  • Materials Science

Background:

  • External power sources are limiting for electrochemiluminescence (ECL) analysis.
  • Galvanized copper foam (GCF) offers a novel material for electrochemical applications.

Purpose of the Study:

  • To develop a self-powered ECL platform using GCF.
  • To detect the stress biomarker reduced glutathione (GSH) for Parkinson's disease diagnosis.

Main Methods:

  • Fabrication of GCF via electrodeposition of Zinc on copper foam.
  • Utilizing GCF as both a power source and electrode in a Luminol/H2O2 system.
  • Characterization using NMR, UV-vis, Raman, EPR, and FT-IR spectroscopy.

Main Results:

  • GCF enhanced ECL intensity by ~1500 times.
  • Accurate detection of GSH (0.5 µM to 0.16 mM) with a low LOD (0.18 µM).
  • Demonstrated high recovery (98-102%) in real human urine samples.

Conclusions:

  • The self-powered GCF-based ECL sensor eliminates the need for external power supplies and complex setups.
  • This technology is scalable, miniaturizable, and suitable for point-of-care applications.
  • Presents a new era for visual ECL imaging and biosensing.