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Chromone-Based Cd(II) Fluorescent Coordination Polymer Fabricated to Study Optoelectronic and Explosive Sensing
Jayanta Mandal1, Arka Dey2,3, Sourav Sarkar1
1Department of Chemistry, Jadavpur University, Kolkata 700032, India.
Inorganic Chemistry
|February 26, 2024
Summary
New coordination polymers (CPs) based on chromone-cadmium(II) exhibit semiconductor properties and detect explosives. These materials show potential for optoelectronic devices and sensitive explosive sensing applications.
Area of Science:
- Materials Science
- Coordination Chemistry
- Analytical Chemistry
Background:
- Coordination polymers (CPs) offer tunable properties for advanced applications.
- Cadmium(II)-based CPs are of interest due to their diverse structural motifs and functionalities.
- Developing multifunctional materials for both electronic and sensing applications is a key research area.
Purpose of the Study:
- To synthesize and characterize novel chromone-Cd(II)-based coordination polymers (CPs).
- To investigate the electrical conductivity and semiconductor behavior of thin film devices made from these CPs.
- To evaluate the potential of these CPs as fluorescent sensors for explosive detection.
Main Methods:
- Synthesis of four chromone-Cd(II)-based coordination polymers (CPs) using different pseudohalide linkers.
- Fabrication of thin film devices (complex-based Schottky devices, CSDs) from the CPs.
- Electrical conductivity measurements under dark and light conditions.
- Fluorescence spectroscopy for explosive sensing studies.
- Structure-property correlation analysis.
Main Results:
- CPs 1-4 exhibited semiconductor behavior in thin film devices (CSD1-CSD4), with conductivity increasing under illumination.
- The I-V plots indicated nonlinear rectifying behavior, characteristic of Schottky barrier diodes (SBDs).
- All CPs demonstrated highly selective fluorescence quenching for 2,4-dinitrophenol (DNP) and 2,4,6-trinitrophenol (TNP), with low limits of detection (LOD).
Conclusions:
- The synthesized chromone-Cd(II)-based CPs possess promising optoelectronic properties suitable for semiconductor applications.
- These CPs function as effective and selective fluorescent sensors for nitroaromatic explosives.
- A clear structure-property relationship was established, guiding the design of future multifunctional coordination polymers.
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