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Molecular competition induced Janus hydrogel bioelectronic interface for electroceutical modulation.

Xinyu Qu1,2, Qian Wang3, Hanjun Sun1

  • 1State Key Laboratory of Flexible Electronics (LoFE) & Institute of Advanced Materials (IAM), School of Flexible Electronics (Future Technologies), School of Physical and Mathematical Sciences, Nanjing Tech University (NanjingTech), Nanjing, China.

Nature Communications
|December 7, 2025
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Summary
This summary is machine-generated.

Researchers developed a novel Janus hydrogel bioelectronic interface using a one-step Molecular Competition Induction method. This approach enhances interfacial adhesion and enables efficient bioelectrical transduction for medical applications.

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Area of Science:

  • Biomaterials Science
  • Bioelectronics
  • Polymer Chemistry

Background:

  • Janus hydrogel bioelectronic interfaces face challenges in fabrication complexity, property control, and interlayer adhesion.
  • Existing methods often result in weak bonding and slippage, limiting their performance.

Purpose of the Study:

  • To develop a facile and universal method for fabricating Janus hydrogel bioelectronic interfaces with enhanced properties.
  • To address the limitations of complex fabrication, poor controllability, and weak interlayer bonding in current Janus hydrogels.

Main Methods:

  • Fabrication of a Janus hydrogel with dual structural and compositional gradients in one step using Molecular Competition Induction.
  • Utilizing unilateral UV light-driven competitive reactions for spatiotemporal progressive polymerization and gradient-structure formation.
  • Programming directional migration of adhesive groups to achieve differential interfacial adhesion.

Main Results:

  • Achieved a 14.6-fold disparity in interfacial adhesion due to programmed directional migration of adhesive groups.
  • Successfully created a bio-adaptive Janus hydrogel interface with robust and efficient bidirectional bioelectrical transduction.
  • Demonstrated electroceutical modulation of abdominal wall injury and electrophysiological signal acquisition.

Conclusions:

  • The Molecular Competition Induction mechanism provides a facile and universal approach for creating advanced Janus hydrogel bioelectronic interfaces.
  • The developed Janus hydrogel overcomes limitations in interfacial bonding and enables effective bioelectrical signal transduction.
  • This technology holds promise for applications in electroceutical modulation and bioelectronic signal acquisition.