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All-solid-state flexible visualization sensor based on sandwich structure and light-induced potential variation.

Zheng Wang1, Jiayuan Zhu1, Ying-Zhuo Shen1

  • 1Institute of Innovation Materials and Energy, School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, China.

Mikrochimica Acta
|September 11, 2025
PubMed
Summary
This summary is machine-generated.

A novel all-solid-state flexible sensor detects bisphenol A (BPA) using Prussian blue and imprinted polymers. This energy-efficient device offers high stability and portability for field applications.

Keywords:
Bipolar electrodeMolecularly imprintedSelf-powered electrochromic sensor

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Area of Science:

  • Materials Science
  • Analytical Chemistry
  • Sensor Technology

Background:

  • Conventional sensors often rely on liquid electrolytes and external power, complicating design and reducing stability.
  • Developing robust, energy-efficient, and portable sensing platforms is crucial for real-world applications.

Purpose of the Study:

  • To report a novel all-solid-state flexible electrochromic sensor for bisphenol A (BPA) detection.
  • To simplify device construction and enhance energy efficiency and stability.

Main Methods:

  • Utilized a polyacrylamide hydrogel as a solid electrolyte and Prussian blue (PB) as the electrochromic material.
  • Incorporated molecularly imprinted polymers (MIPs) and aptamer-functionalized UiO-66@TiO2 for target recognition and signal generation.
  • Employed UV light irradiation to trigger a potential difference and induce PB discoloration proportional to BPA concentration.

Main Results:

  • The sensor demonstrated quantitative detection of BPA in the range of 1.0 × 10⁻⁶ to 1.0 × 10⁻¹² M.
  • Achieved a low limit of detection of 5.96 × 10⁻¹³ M for BPA.
  • Successfully applied the sensor to analyze BPA in bottled water samples with satisfactory results.

Conclusions:

  • The developed all-solid-state flexible sensor offers a simplified, stable, and energy-efficient approach for BPA detection.
  • Its design facilitates integration into portable devices for on-site environmental monitoring.
  • This technology holds promise for advanced field applications in chemical sensing.