Multifunctional Porous Hydrogen-Bonded Organic Frameworks: Current Status and Future Perspectives

Area of Science:

• Materials Science
• Supramolecular Chemistry

Background:

• Hydrogen-bonded organic frameworks (HOFs) are emerging multifunctional porous materials formed by self-assembly of organic building blocks via hydrogen bonding and other interactions.
• HOFs offer advantages like flexibility, mild synthesis, and recyclability due to reversible hydrogen bonds.
• However, inherent flexibility often leads to poor structural designability and low framework stability.

Purpose of the Study:

• To provide an overview of the development and structural features of HOFs.
• To summarize design principles and strategies for enhancing HOF stability.
• To highlight current applications and future perspectives of HOFs.

Main Methods:

• Review of existing literature on HOF synthesis and characterization.
• Analysis of design principles and stability enhancement strategies for HOFs.
• Compilation of state-of-the-art HOF applications.

Main Results:

• HOFs exhibit high porosity and are synthesized using versatile building blocks.
• Strategies to improve structural designability and framework stability are discussed.
• HOFs show promise in gas storage/separation, catalysis, biological applications, sensing, and proton conduction.

Conclusions:

• HOFs represent a promising class of porous materials with tunable properties.
• Further research is needed to overcome challenges in stability and designability.
• HOFs are expected to find broader applications with continued development.