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
Summary
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.
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.
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