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Mukherjee D, Sarkar K, Reja S, Md Bakibillah, Guha S, Mandal NK, Naskar JP, Das RK. Mononuclear Zn(II) Complex Based on N2O Ligand Compartment: First Case to Detect Nitro Explosives. J Fluoresc 2023:10.1007/s10895-023-03431-9. [PMID: 37773236 DOI: 10.1007/s10895-023-03431-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 09/01/2023] [Indexed: 10/01/2023]
Abstract
This paper scrutinises the development of low-cost hypersensitive fluorescent probes manipulated chemically with Schiff base complexes and their prospective applicability for the detection of nitro explosives in light of the rapidly expanding demand for anti-trafficking measures. In this study, a new Zn(II) metal complex has been synthesized in one pot using the Schiff base ligand L= 2-methoxy-5-methyl-N-(2-pyridin-2-ylmethylene) aniline. The complex was also thoroughly characterised using various spectroscopic tools and subjected to single crystal XRD analysis. In the asymmetric unit, square pyramidal zinc (II) centre exist in the inner N2O compartment of the ligand L. The intermolecular Cg···Cg interactions exist between two different asymmetric residual units lead to supramolecular assembly along b axis. By turning off the fluorescence response, the complex serves as a sensor for the detection of nitro aromatics in CH3CN solution. A significant quenching efficiency has been reported with a quenching constant (KSV) 1.8 × 104 M-1 for 4-nitrobenzoic acid during investigation of sensing phenomenon in solution phase. In addition, determining the binding stoichiometry of the chemosensor with NO2 and the binding constant, the mechanism of fluorescence quenching has also been postulated. The detection limit of NO2 is 7.6×10 -7 M, with the binding constant k = 1.1021× 108 M-1. Additionally, the DFT calculation makes it easier to comprehend the appropriate binding process in light of the findings of experiments. We also designed a paper sensor strip for the visual detection of Nitro Explosive Residues in light of the sensor's potential used in forensic investigations.
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Affiliation(s)
- Deboshmita Mukherjee
- Department of Chemistry, University of North Bengal, Darjeeling, West Bengal, 734013, India
| | - Kaushik Sarkar
- Department of Chemistry, University of North Bengal, Darjeeling, West Bengal, 734013, India
| | - Sahin Reja
- Department of Chemistry, University of North Bengal, Darjeeling, West Bengal, 734013, India
| | - Md Bakibillah
- Department of Chemistry, University of North Bengal, Darjeeling, West Bengal, 734013, India
| | - Shramana Guha
- School of Applied & Interdisciplinary Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata, India
| | - Naba Kr Mandal
- Department of Chemistry, Jadavpur University, Kolkata, 700 032, India
| | | | - Rajesh Kumar Das
- Department of Chemistry, University of North Bengal, Darjeeling, West Bengal, 734013, India.
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Synthesis and characterization of two polynuclear zinc(II) complexes and their applications in nitroaromatics sensing: An experimental and theoretical study. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.121186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Basak T, Roy S, Banerjee S, Gomila RM, Frontera A, Chattopadhyay S. Synthesis, characterization and self assembly of dinuclear zinc Schiff base complexes: A combined experimental and theoretical study. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.116044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Sarkar RS, Basak T, Gomila RM, Frontera A, Chattopadhyay S. DFT study on CH⋯O, CH···SCN and S···π interaction energies in three dinuclear mixed valence cobalt(III/II) complexes with secondary diamine ligands having inner N2O2 and outer O4 compartments. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.116039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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