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Updated: Jul 24, 2025
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Author Spotlight: Experimental Approaches for the Synthesis of Low-Valent Metal-Organic Frameworks from Multitopic Phosphine Linkers
Published on: May 12, 2023
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Selective scandium ion capture through coordination templating in a covalent organic framework.
Ye Yuan1, Yajie Yang1, Katie R Meihaus2
1Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun, China.
Nature Chemistry
|July 3, 2023
Summary
Researchers created tunable scandium-containing covalent organic frameworks (COFs). A metal-imprinted COF demonstrated superior selectivity and capacity for Sc3+ ions, outperforming existing adsorbents.
Area of Science:
- Materials Science
- Coordination Chemistry
- Reticular Chemistry
Background:
- Covalent organic frameworks (COFs) offer tunable properties through structural diversification.
- Incorporating coordination complexes into COFs can enhance their functionality.
Purpose of the Study:
- To combine coordination and reticular chemistry for novel COF synthesis.
- To develop a scandium-imprinted COF for selective metal ion adsorption.
Main Methods:
- Synthesized crystalline COFs using ditopic and mixed tritopic moieties (organic ligand and scandium complex).
- Varied the ratio of organic ligand to scandium complex to control metal incorporation.
- Utilized a metal-imprinting strategy by removing scandium from a high-content COF.
Main Results:
- Achieved tunable scandium incorporation in COFs by adjusting precursor ratios.
- Developed a metal-imprinted COF with high affinity and capacity for Sc3+ ions.
- Demonstrated superior selectivity for Sc3+ over La3+ and Fe3+ compared to existing adsorbents.
Conclusions:
- This approach diversifies COF structures and properties.
- The metal-imprinted COF shows significant potential for selective scandium recovery in acidic media.
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