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Fabrication of Polyimide Matrix with a Janus-like Porous Structure for Tailorable Functionality.

Hualong Huang1,2,3, Rongjie Chen2,3, Chao Xiong1,3

  • 1Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, P. R. China.

ACS Applied Materials & Interfaces
|April 3, 2026
PubMed
Summary

Researchers developed a versatile polyimide film for electronic devices, enabling "on-demand integration" and "synergistic optimization." This advanced material offers high strength, flexibility, and low thermal conductivity for multifunctional applications.

Keywords:
Electromagnetic interference shieldingFire warningJanus polyimide matrixMultifunctional integrationSensing−warning−protectionTailorable functionality

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Polymer Science

Background:

  • Integrating multiple functions into electronic devices presents significant challenges.
  • Traditional materials often focus on single functionalities, limiting device design.
  • A need exists for versatile platforms enabling multifunctional integration and optimization.

Purpose of the Study:

  • To develop a novel material matrix for multifunctional integration in electronic devices.
  • To create a polyimide Janus film with a unique asymmetric structure.
  • To demonstrate the platform's potential for
  • on-demand functionalization
  • and
  • synergistic optimization
  • .

Main Methods:

  • Utilized an innovative dual-pore-forming agent synergistic pore-forming strategy.
  • Constructed a polyimide Janus matrix film with a
  • dense-layer-porous-layer
  • asymmetric structure.
  • Functionalized the platform with CNTs@Fe3O4 hybrid materials.

Main Results:

  • Achieved high mechanical strength (>70 MPa) and flexibility.
  • Exhibited ultralow thermal conductivity (0.067 W·m-1·K-1) and excellent chemical stability.
  • Demonstrated efficient electromagnetic shielding (>40 dB) and active overheating warning capabilities.

Conclusions:

  • The developed polyimide platform material offers a tailorable solution for integrated electronic device design.
  • This work provides an innovative approach beyond single-function materials for future electronics.
  • The material enables multifunctional
  • on-demand integration
  • and
  • synergistic optimization
  • .