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Independent Configuration and Reprogramming of Porous Characters in Macroporous Hydrogel Enabled by the Orthogonal

Biru Yang1,2, Chen Yang2, Yongqi Liu1,2

  • 1Ningbo Innovation Center, Zhejiang University, Ningbo 315807, China.

ACS Applied Materials & Interfaces
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PubMed
Summary

Researchers developed a new method to independently control porosity and pore size in macroporous hydrogels using an orthogonal dynamic network. This breakthrough allows for adaptable and reprogrammable porous materials for advanced applications.

Keywords:
ice templatingmacroporous hydrogelsoil−water separationorthogonal dynamic networksphotopatterning

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Nanotechnology

Background:

  • Macroporous hydrogels are crucial in various industries, with pore morphology being a key characteristic.
  • Current methods struggle to independently control porosity and pore size due to intertwined mechanisms.

Purpose of the Study:

  • To develop a novel strategy for the independent and adaptive control of porosity and pore size in macroporous hydrogels.
  • To enable the reprogramming of porous characteristics in pre-formed hydrogels.

Main Methods:

  • Utilized an orthogonal dynamic network strategy incorporating disulfide bonds and dynamic metallic coordination.
  • Controlled porosity via UV-induced network relaxation during freezing.
  • Manipulated pore size through reversible metal-ligand coordination.

Main Results:

  • Achieved independent and continuous control of porosity from 0 to 75%.
  • Demonstrated reversible manipulation of pore size.
  • Successfully reprogrammed porous characteristics and achieved photopatterning of pores.

Conclusions:

  • The developed strategy allows arbitrary manipulation of hydrogel porous morphology.
  • This approach offers a versatile platform for designing advanced functional porous materials.