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Co-assembly of Covalent Organic Framework Particles into Binary Ordered Superstructures.

Javier Fonseca1, Tingchuan Zhou2, Bingyang Lu1

  • 1Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China.

Journal of the American Chemical Society
|July 29, 2025
PubMed
Summary
This summary is machine-generated.

Covalent organic framework (COF) particles and metal-organic framework (MOF) particles can co-assemble into binary superstructures. This breakthrough enables the creation of novel hybrid porous materials with tunable properties for advanced applications.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Supramolecular Chemistry

Background:

  • Multicomponent ordered superstructures are formed by colloidal particles, with properties dictated by constituent building blocks.
  • Covalent organic frameworks (COFs) are crystalline porous polymers with tunable properties.
  • Metal-organic frameworks (MOFs) are porous crystalline materials composed of metal ions and organic linkers.

Purpose of the Study:

  • To demonstrate the co-assembly of covalent organic framework (COF) particles into binary ordered superstructures.
  • To explore the co-assembly of COF particles with metal-organic framework (MOF) particles.
  • To expand the design space for hybrid porous materials.

Main Methods:

  • Solvent evaporation within confined spaces was used to induce co-assembly of COF particles.
  • Particle size ratios were adjusted to control stoichiometry in 2D COF-COF superstructures.
  • Co-assembly experiments were conducted between COF and MOF particles.

Main Results:

  • Achieved 2D COF-COF binary ordered superstructures with varying stoichiometries (LS2 and LS6) through entropic control.
  • Reported the first successful co-assembly between COF and MOF particles.
  • Fabricated a 2D COF-MOF binary ordered superstructure with LS2 stoichiometry.

Conclusions:

  • COF particles can be co-assembled into binary ordered superstructures, offering new avenues for materials design.
  • The co-assembly of COF and MOF particles represents a significant advancement in creating hybrid porous materials.
  • This work enables the construction of complex binary superstructures from diverse COF particles, broadening their application potential.