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Zero- to One-Dimensional Zn24 Supraclusters: Synthesis, Structures and Detection Wavelength
Yating Chen1,2, Zhonghang Chen1, Jiming Wang1
1Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, China.
Nanomaterials (Basel, Switzerland)
|December 8, 2023
Summary
Synthesized zinc supracluster materials selectively detect cerium (Ce3+) ions in ethanol with high efficiency. These materials also exhibit fluorescence detection capabilities for specific wavelengths.
Area of Science:
- Materials Science
- Coordination Chemistry
- Analytical Chemistry
Background:
- Development of novel supramolecular structures for sensing applications.
- Exploration of metal-organic frameworks (MOFs) and supraclusters for ion detection.
- Need for selective and sensitive analytical methods for metal ions.
Purpose of the Study:
- To synthesize and characterize novel zinc supracluster materials.
- To investigate the fluorescence properties of the zinc supracluster.
- To evaluate the potential of the zinc supracluster for selective ion detection.
Main Methods:
- Synthesis of zinc supracluster [Zn24(ATZ)18(AcO)30(H2O)1.5] and 1D chain {[Zn24(ATZ)18(AcO)30(C2H5OH)2(H2O)3]·(H2O)2.5}n using solvothermal conditions and the micro bottle method.
- Investigation of fluorescence quenching effects of various metal ions (Fe3+, Ni2+, Cu2+, Cr2+, Co2+, and rare earth ions) in N,N-dimethylformamide solution.
- Selective detection of Ce3+ ions in ethanol solution and analysis of emission wavelengths.
Main Results:
- Successful synthesis of a 2 nm molecular diameter zinc supracluster and a 1D zinc supracluster chain.
- Observed fluorescence quenching by Fe3+, Ni2+, Cu2+, Cr2+, and Co2+ ions, with no significant quenching by tested rare earth ions.
- Demonstrated selective detection of Ce3+ ions in ethanol with a low limit of detection (LOD) of 8.51 × 10-7 mol/L.
- Identified fluorescence detection capability for wavelengths between 302 and 332 nm based on emitted light intensity.
Conclusions:
- The synthesized zinc supracluster exhibits selective fluorescence quenching properties.
- The material is effective for the sensitive detection of Ce3+ ions in ethanol.
- The zinc supracluster shows potential as a fluorescent sensor for specific metal ions and wavelengths.
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