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Updated: Jan 28, 2026
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Synthesis and Characterization of Functionalized Metal-organic Frameworks
Published on: September 5, 2014
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Solvent-Driven Reversible Phase Transition of a Pillared Metal-Organic Framework
Xiao-Lan Liu1, Wen-Wen Fan1, Zhi-Xiang Lu1
1School of Chemical Science and Technology, Yunnan University, No. 2 North Cuihu Road, Kunming, 650091, China.
Chemistry (Weinheim an Der Bergstrasse, Germany)
|February 21, 2019
Summary
Researchers developed a novel europium metal-organic framework (MOF) that reversibly transforms between 3D nanorods and 2D nanobelts in different solvents. This discovery enables loading previously inaccessible dye molecules into MOFs.
Area of Science:
- Materials Science
- Chemistry
- Nanotechnology
Background:
- Controllable reversible phase transitions in functional materials are crucial for technological applications.
- While many metal-organic frameworks (MOFs) have lamellar structures, reversible 3D to 2D phase transformations are underexplored.
- Europium-based MOFs are of interest for their unique properties.
Purpose of the Study:
- To report the first europium metal-organic framework (MOF) exhibiting reversible morphological changes.
- To investigate the solvent-dependent phase transition of this europium MOF at room temperature.
- To demonstrate a novel application for this MOF in loading challenging dye molecules.
Main Methods:
- Synthesis of a novel europium-metal-organic framework (MOF).
- Characterization of MOF morphology in different solvents (organic vs. water) using microscopy techniques.
- Demonstration of dye molecule loading using a delamination recovery method.
Main Results:
- The europium MOF exhibited a reversible phase transition, displaying 3D nanorod morphology in organic solvents and 2D nanobelt architecture in water.
- This solvent-induced morphological transformation occurred at room temperature.
- A delamination recovery method successfully loaded dye molecules into the MOF, overcoming previous limitations.
Conclusions:
- A novel europium MOF with unprecedented reversible morphology in response to solvent environments has been synthesized.
- This material demonstrates a unique 3D-to-2D phase transition, opening new avenues for functional material design.
- The reversible phase transition and delamination recovery method offer a promising strategy for enhanced MOF applications, particularly in molecular loading.
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