Ionic Hydrogen-Bonded Organic Frameworks: A New Type of Porous Organic Solid Base
Ying Hou1,2, Han-Ru Fang1,2, Yu-Lin Li1,2
1State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, P.R. China.
Angewandte Chemie (International Ed. in English)
|July 30, 2025
Summary
Researchers discovered inherent basicity in hydrogen-bonded organic frameworks (HOFs). This finding introduces new porous solid bases with high crystallinity and modular structures for sustainable chemical processes.
Area of Science:
- Materials Science
- Supramolecular Chemistry
- Catalysis
Background:
- Solid bases offer advantages in handling, sustainability, and tunable properties.
- Developing novel solid bases is a challenging and underdeveloped research area.
Purpose of the Study:
- To report the discovery of inherent basicity in hydrogen-bonded organic frameworks (HOFs).
- To elucidate the origin and mechanism of basicity in HOFs.
- To guide the discovery of new porous solid bases.
Main Methods:
- Utilizing single-crystal X-ray diffraction to monitor structural changes during acid-base reactions.
- Investigating proton transfer processes in HOFs.
- Demonstrating practical applications in base-catalyzed reactions.
Main Results:
- HOFs exhibit inherent basicity.
- Precise structural monitoring revealed the origin and mechanism of basicity.
- Discovered new porous solid bases with universal characteristics in anionic HOFs.
- Demonstrated high activity and selectivity in base-catalyzed reactions.
Conclusions:
- HOFs represent a new class of porous solid bases.
- This study enriches the family of solid bases with materials featuring high porosity, crystallinity, and modularity.
- The findings provide a foundation for designing and discovering new solid bases for sustainable chemistry.
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