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Related Experiment Video

Updated: Jun 22, 2026

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Programming Molecular Switches within Capacitive PEDOT:DNA Hydrogels for Deciphering Pathophysiological

Hao Wang1, Zinan Zhao1, Yao Xu1

  • 1Department of Polymeric Materials, School of Materials Science and Engineering, Tongji University, Shanghai 201804, China.

Nano Letters
|December 12, 2025
PubMed
Summary
This summary is machine-generated.

This study introduces novel capacitive poly(3,4-ethylenedioxythiophene):DNA hydrogels for wound management. These smart hydrogels detect biomarkers by changing capacitance, enabling real-time wound status monitoring via smartphones.

Keywords:
PEDOT:DNA hydrogelcapacitive sensingdiabetic woundfunctional nucleic acidsmolecular switch

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Area of Science:

  • Biomaterials Science
  • Biosensing Technology
  • Nanotechnology

Background:

  • Capacitive sensing offers potential for wound management but lacks biomarker responsiveness.
  • Current sensing materials struggle to monitor complex wound microenvironments.
  • Developing responsive materials is crucial for advanced wound diagnostics.

Purpose of the Study:

  • To develop novel capacitive poly(3,4-ethylenedioxythiophene):DNA (pDNA) hydrogels for wound management.
  • To create a sensing system capable of detecting wound biomarkers and pathophysiological changes.
  • To enable real-time, smartphone-based monitoring of wound status.

Main Methods:

  • Covalent cross-linking of pDNA and poly(ethylene glycol) diglycidyl ether to form hydrogels.
  • Utilizing a metastable DNA duplex within the hydrogel that responds to biomarkers by conformational changes.
  • Integrating a portable capacitance detector with Bluetooth for wireless data transmission.

Main Results:

  • The pDNA hydrogel exhibits a switchable "ON" to "OFF" molecular circuit in response to stimuli, decreasing capacitance.
  • Demonstrated real-time tracking of pH, inflammation, and infection status in diabetic wounds.
  • Successful wireless data relay to smartphones for intelligent wound analysis.

Conclusions:

  • The developed capacitive pDNA hydrogels offer a promising platform for sensitive and real-time wound monitoring.
  • This technology enables non-invasive tracking of wound healing dynamics and therapeutic response.
  • The system facilitates intelligent wound management through accessible smartphone integration.