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A single-crystal 3D Zn-tetrathiolate connected metal-organic framework
Jian-Rong Li1, Jieying Hu1, Long Jiang2
1School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, P. R. China. junhe@gdut.edu.cn.
Chemical Communications (Cambridge, England)
|February 11, 2025
Summary
Researchers developed a new metal-organic framework (MOF) using a masked synthesis approach. This novel thiolate-based MOF, HTT-Zn, shows promise as a naked-eye sensor for detecting the toxic pollutant paraquat.
Area of Science:
- Materials Science
- Chemistry
- Nanotechnology
Background:
- Thiolate ligands coordinate strongly with metals, making crystallographically resolved metal-thiolate frameworks challenging to synthesize.
- Previous work demonstrated masked synthetic strategies for lead-thiolate MOFs.
Purpose of the Study:
- To synthesize the first crystallographically resolved first-row transition-metal based metal-tetrathiolate MOF.
- To explore the potential of this new MOF as a sensor for toxic pollutants.
Main Methods:
- Employed a thioester-protected hexathiotriphenylene (HVaTT) ligand with a Zn(II) center.
- Utilized a masked synthetic strategy to overcome coordination challenges.
- Characterized the resulting metal-organic framework (MOF) structure.
Main Results:
- Successfully synthesized HTT-Zn, the first crystallographically resolved first-row transition-metal based metal-tetrathiolate MOF.
- HTT-Zn exhibits a 3D anionic framework with tetrahedral [ZnS4] nodes, 3-fold interpenetration, and windmill-like topology.
- The anionic framework enables a rapid colorimetric response to paraquat, indicating potential as a naked-eye sensor.
Conclusions:
- Masked synthesis is a viable general strategy for creating metal-thiolate MOFs.
- HTT-Zn represents a new class of materials for sensing applications, particularly for paraquat detection.
- This work expands the exploration of metal-thiolate-based MOFs.
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