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A Nanoscale Multichannel Closed Bipolar Electrode Array for Electrochemiluminescence Sensing Platform.

Qingfeng Zhai1,2, Xiaowei Zhang1,2, Yanchao Han1

  • 1State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun, Jilin 130022, China.

Analytical Chemistry
|November 25, 2015
PubMed
Summary

We developed a novel nanoscale multichannel closed bipolar electrode (BPE) array on a poly(ethylene terephthalate) (PET) membrane. This device enables sensitive detection of various analytes, including biomarkers, using electrochemiluminescence (ECL).

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Area of Science:

  • Nanotechnology
  • Electrochemistry
  • Biosensing

Background:

  • Electrochemical sensing platforms are crucial for detecting various analytes.
  • Developing nanoscale devices with multichannel capabilities can enhance analytical performance.
  • Poly(ethylene terephthalate) (PET) membranes offer a versatile substrate for micro/nanofabrication.

Purpose of the Study:

  • To report the first nanoscale multichannel closed bipolar electrode (BPE) array.
  • To demonstrate the detection of diverse analytes, including biomarkers, using an electrochemiluminescence (ECL) system.
  • To establish a versatile platform for multianalysis and nanoscale bipolar electrochemistry.

Main Methods:

  • Fabrication of a multichannel PET membrane using NaOH etching.
  • Decoration of etched channels with gold (Au) nanofibers to form BPE arrays.
  • Utilizing a Ru(bpy)3(2+)/tripropylamine (TPA) ECL system for signal readout.

Main Results:

  • Successful detection of various targets including TPA, Ru(bpy)3(2+), dopamine, hydrogen peroxide (H2O2), alpha-fetoprotein (AFP), and carcinoembryonic antigen (CEA).
  • Demonstrated practical application in detecting AFP and CEA in human serum with high sensitivity.
  • The device allows for tunable nanoscale dimensions and BPE array densities.

Conclusions:

  • The developed nanoscale multichannel closed BPE array is a promising platform for multianalysis.
  • The device exhibits potential for advanced applications in nanoscale bipolar electrochemistry.
  • This technology provides a flexible foundation for future innovations in sensitive and multiplexed detection.