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Updated: May 28, 2025
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Synthesis and Characterization of Functionalized Metal-organic Frameworks
Published on: September 5, 2014
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Development of a New Structural Transformation Reaction in Cr-Based MOFs Induced by Fluoride
Shintaro Tanaka1, Ryoya Miyata1, Reon Teramoto1
1Department of Nanobiochemistry, Frontiers of Innovative Research in Science and Technology (FIRST), Konan University, 7-1-20 Minatojimaminamimachi, Chuo-ku, Kobe, 650-0047, Japan.
Chemistry, an Asian Journal
|February 13, 2025
Summary
Researchers achieved a novel structural transformation in chromium-based metal-organic frameworks (MOFs), converting MIL-101(Cr) to MIL-53(Cr) using fluoride additives or electron-withdrawing groups, a first for inert MOFs.
Area of Science:
- Materials Science
- Chemistry
- Nanotechnology
Background:
- Structural transformation in metal-organic frameworks (MOFs) involves phase transitions via coordination bond dissociation and recombination.
- Kinetically inert MOFs, particularly those based on chromium (Cr), have presented challenges for controlled structural manipulation.
Purpose of the Study:
- To develop a new method for inducing structural transformation in kinetically inert Cr-based MOFs.
- To demonstrate the conversion of MIL-101(Cr) to MIL-53(Cr) using specific additives or functional groups.
Main Methods:
- Investigated the use of fluoride as an additive to trigger structural transformation in MIL-101(Cr).
- Examined the effect of electron-withdrawing groups on MIL-101(Cr) to induce transformation without additives.
Main Results:
- Successfully achieved a structural transformation from MIL-101(Cr) to MIL-53(Cr) using fluoride as an additive.
- Demonstrated that MIL-101(Cr) with electron-withdrawing groups undergoes structural transformation without the need for additives.
- This represents the first reported instance of a structural transformation system in kinetically inert Cr-based MOFs.
Conclusions:
- The study successfully established novel pathways for structural transformation in inert Cr-MOFs.
- Fluoride additives and electron-withdrawing groups are effective in driving the MIL-101(Cr) to MIL-53(Cr) phase transition.
- These findings open new avenues for designing and controlling MOF structures for advanced applications.
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