The effect of disorder in multi-component covalent organic frameworks

Area of Science:

• Materials Science
• Chemistry
• Nanotechnology

Background:

• Covalent Organic Frameworks (COFs) are crystalline porous polymers.
• Tuning the porosity of COFs is crucial for applications in gas storage, separation, and catalysis.
• Understanding the impact of component arrangement on COF properties is an ongoing challenge.

Purpose of the Study:

• To investigate the influence of random versus correlated linker distribution on pore size and shape in single-layer, multi-component COFs.
• To establish a relationship between linker arrangement and the resulting porosity of COF solid solutions.
• To present generalizable methods for studying disordered framework materials.

Main Methods:

• Computational modeling and simulation of three distinct multi-component COF systems.
• Analysis of pore size and shape parameters based on different linker distribution models (random vs. correlated).
• Characterization of porosity in disordered framework materials.

Main Results:

• A direct correlation was observed between linker distribution patterns and the porosity of COF solid solutions.
• Random linker distribution resulted in different pore characteristics compared to correlated distribution.
• The study provides insights into controlling pore architecture through linker arrangement.

Conclusions:

• Linker distribution is a critical factor in determining the porosity of multi-component COFs.
• The presented methodologies are applicable to a broader range of disordered framework materials.
• This work contributes to the rational design of COFs with specific pore properties.