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Updated: Sep 10, 2025
08:12
Surface Functionalization of Metal-Organic Frameworks for Improved Moisture Resistance
Published on: September 5, 2018
16.1K
Hydroxamate Linkage Transformation in Porphyrin Functionalized Metal-Organic Frameworks.
Oscar Iu-Fan Chen1,2, Neda S Sabeva1,2, Tianqiong Ma1,2
1Department of Chemistry and Kavli Energy Nano Sciences Institute, University of California, Berkeley, California 94720, United States.
Inorganic Chemistry
|August 19, 2025
Summary
Five new porphyrin-based metal-organic frameworks (MOFs) were synthesized using a high-throughput method. MOF-614 exhibits significant water, carbon dioxide, and hydrogen adsorption capabilities, showcasing its potential applications.
Area of Science:
- Materials Science
- Chemistry
- Nanotechnology
Background:
- Metal-Organic Frameworks (MOFs) offer tunable properties for various applications.
- Porphyrin-based linkers provide unique structural and functional characteristics.
- Developing novel MOFs with diverse coordination chemistries is crucial for advancing materials science.
Purpose of the Study:
- To synthesize and characterize a series of novel porphyrin-based metal-organic frameworks (MOFs).
- To investigate the structural diversity and coordination behavior of these MOFs.
- To evaluate the gas and water adsorption properties of the synthesized MOFs.
Main Methods:
- High-throughput screening approach utilizing a porphyrin-based hydroxamic acid linker (H6PTBHA) and various metal ions.
- Characterization techniques including elemental analysis, mass spectrometry, NMR, XPS, and X-ray diffraction.
- Adsorption property evaluation using nitrogen, water, carbon dioxide, and hydrogen isotherms.
Main Results:
- Discovery of five new porphyrin-based MOFs: MOF-610 series, MOF-612, and MOF-614.
- MOF-610 series and MOF-612 showed in situ linker transformation to carboxylate or amide species.
- MOF-614 retained the hydroxamate moiety, exhibiting a BET surface area of 701 m² g⁻¹ and notable sorption capacities for water, CO₂, and H₂.
Conclusions:
- Successful synthesis of diverse porphyrin-based MOFs with varying linker coordination.
- MOF-614 demonstrates promising gas and water adsorption properties, highlighting its potential for separation and storage applications.
- The study provides insights into structure-property relationships in porphyrin-based MOFs.
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