A two-year water-stable 2D MOF with aqueous NIR photothermal conversion ability
Xiang Xue1, Jinghang Wang1, Qinyi Zhu1
1CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China. lhewen@ustc.edu.cn.
Dalton Transactions (Cambridge, England : 2003)
|January 12, 2021
Summary
Developing highly water-stable metal-organic frameworks (MOFs) is crucial. This study introduces a new MOF (CuCP-MOF) using rigid shielding ligands, demonstrating exceptional stability and promising NIR photothermal conversion.
Area of Science:
- Materials Science
- Chemistry
- Nanotechnology
Background:
- Metal-organic frameworks (MOFs) exhibit structural lability in humid conditions, limiting their practical applications.
- Enhancing MOF water stability is critical for industrial and academic pursuits.
Purpose of the Study:
- To develop a novel method for improving MOF water stability using rigid shielding ligands.
- To synthesize and characterize a highly water-stable two-dimensional MOF (CuCP-MOF).
Main Methods:
- Synthesis of CuCP-MOF using [2,2]paracyclophane dicarboxylate ligands and Cu(II) ions.
- Characterization via single crystal X-ray diffraction, FTIR, and XRD analyses.
- Evaluation of NIR photothermal conversion efficiency.
Main Results:
- CuCP-MOF exhibits exceptional aqueous stability, remaining intact after two years in water.
- The MOF forms nanosheets due to large interlayer distance and weak interactions.
- High NIR photothermal conversion efficiency was observed (17.5%-22.0%).
Conclusions:
- The developed rigid shielding ligand strategy effectively enhances MOF water stability.
- CuCP-MOF demonstrates significant potential for applications requiring NIR photothermal conversion in aqueous environments.
