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MOF Network Scaffold Engineering: Inducing Cd/Zn-Based MOF Structural Variations via Metal Nodes and Intermolecular
Zheng Wang1, Xiang-Qian Li1, Xin-Qi Chen1
1Key Laboratory of Chemical Additives for China National Light Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China.
Inorganic Chemistry
|June 2, 2026
Summary
Researchers engineered metal-organic frameworks (MOFs) using a novel scaffold strategy to control long-persistent luminescence (LPL). This method precisely tunes phosphorescence lifetimes for advanced display and anticounterfeiting applications.
Area of Science:
- Materials Science
- Chemistry
- Nanotechnology
Background:
- Metal-organic frameworks (MOFs) offer tunable properties for advanced applications.
- Long-persistent luminescence (LPL) is crucial for displays and anticounterfeiting.
- Controlling LPL in MOFs requires precise structural and electronic manipulation.
Purpose of the Study:
- To develop a network scaffold engineering strategy for regulating LPL in MOFs.
- To investigate the impact of metal nodes and intermolecular interactions on LPL properties.
- To fine-tune phosphorescence lifetimes and multicolor LPL emission.
Main Methods:
- Synthesized four distinct MOFs using 2,3-pyridinedicarboxylic acid (H2L) ligand with varying metal nodes (Cd2+, Zn2+) and conditions.
- Employed systematic characterization techniques to analyze MOF structures and luminescence properties.
- Investigated temperature-dependent, excitation-dependent, and time-dependent LPL behavior.
Main Results:
- Achieved fine-tuning of phosphorescence lifetimes from 20.70 to 139.85 ms by adjusting metal nodes and intermolecular interactions.
- MOF-SW24 exhibited the longest phosphorescence lifetime (>100 ms) due to scaffold effects and noncovalent interactions.
- Demonstrated temperature-dependent, excitation-dependent, and time-dependent multicolor LPL emission.
Conclusions:
- The network scaffold engineering strategy effectively regulates LPL in MOFs.
- Precise control over metal nodes and intermolecular interactions allows for fine-tuning of luminescence lifetimes.
- Developed MOFs show potential for advanced display and anticounterfeiting technologies.
