Multifunctional Zn(II) Coordination Polymer as Highly Selective Fluorescent Sensor and Adsorbent for Dyes
Mohd Muddassir1, Abdullah Alarifi1, Naaser A Y Abduh1
1Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia.
International Journal of Molecular Sciences
|May 27, 2023
Summary
A new zinc coordination polymer acts as a fluorescent sensor. It selectively detects acetone and silver ions, and adsorbs cationic dyes, showing potential for environmental monitoring.
Area of Science:
- Coordination Chemistry
- Materials Science
- Supramolecular Chemistry
Background:
- Schiff base ligands are versatile building blocks in coordination chemistry.
- Coordination polymers offer tunable properties for sensing applications.
- Developing selective sensors for analytes like acetone and metal ions is crucial.
Purpose of the Study:
- Synthesize and characterize a novel Zn(II)-based coordination polymer.
- Investigate its potential as a fluorescent sensor for acetone and Ag+.
- Evaluate its capability for selective adsorption of cationic dyes.
Main Methods:
- Synthesis of a Schiff base ligand from 5-aminosalicylic acid and salicylaldehyde.
- Characterization using analytical, spectroscopic, and single-crystal X-ray diffraction.
- Photoluminescence spectroscopy to study sensing mechanisms and selectivity.
- Adsorption studies with cationic dyes.
Main Results:
- A distorted tetrahedral Zn(II) center was confirmed by X-ray diffraction.
- The coordination polymer selectively quenches fluorescence in the presence of acetone.
- It exhibits enhanced fluorescence for Ag+ detection in aqueous media.
- Selective adsorption of methylene blue and rhodamine B was observed.
Conclusions:
- The Zn(II) coordination polymer demonstrates high sensitivity and selectivity as a fluorescent probe.
- It can effectively detect acetone, various ketones, and Ag+ ions.
- The material shows promise for selective adsorption of cationic dyes, indicating potential environmental applications.
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