Structural determination of MCOFs: status, challenges and perspectives

Area of Science:

• Materials Science
• Nanotechnology
• Chemistry

Background:

• Porous materials, including covalent organic frameworks (COFs), offer tunable properties and large surface areas.
• Metal-covalent organic frameworks (MCOFs) integrate metal complexes into COF backbones, showing application potential.
• Low crystallinity in MCOFs hinders structural determination and limits their widespread use.

Purpose of the Study:

• To highlight a synergistic approach for the structural elucidation of metalloligand COFs (MLCOFs).
• To overcome challenges associated with the low crystalline nature of MLCOFs.
• To generate an atomic map for understanding structure-property relationships.

Main Methods:

• Classification of MCOFs into metalated COFs (MeCOFs) and MLCOFs.
• Utilizing complementary structural analysis techniques for characterization.
• Combining nano and macroscale characterization procedures with theoretical modeling.

Main Results:

• Demonstration of a synergistic strategy for MLCOF structural determination.
• Successful generation of atomic maps for MLCOFs.
• Identification of key information for structure-activity relationships.

Conclusions:

• A combined characterization approach effectively elucidates MLCOF structures despite low crystallinity.
• Understanding MLCOF atomic structures is crucial for optimizing their properties and applications.
• This perspective provides a framework for advancing MCOF research and development.