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Dhanasekaran K, Tamizhselvi R, Mohandoss S, Beena M, Palaniappan A, Napoleon AA. A thiazole-based colorimetric and photoluminescent chemosensors for As 3+ ions detection: Density functional theory, test strips, real samples, and bioimaging applications. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 316:124325. [PMID: 38701574 DOI: 10.1016/j.saa.2024.124325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 04/10/2024] [Accepted: 04/21/2024] [Indexed: 05/05/2024]
Abstract
A Schiff-base Ethyl (E)-2-(3-((2-carbamothioylhydrazono)methyl)-4-hydroxyphenyl)-4-methylthiazole-5-carboxylate (TZTS) dual functional colorimetric and photoluminescent chemosensor which includes thiazole and thiosemicarbazide has been synthesized to detect arsenic (As3+) ions selectively in DMSO: H2O (7:3, v/v) solvent system. The molecular structure of the probe was characterized via FT-IR, 1H, and 13C NMR & HRMS analysis. Interestingly, the probe exhibits a remarkable and specific colorimetric and photoluminescence response to As3+ ions when exposed to various metal cations. The absorption spectral changes of TZTS were observed upon the addition of As3+ ions, with a naked eye detectable color change from colorless to yellow color. Additionally, the chemosensor (TZTS) exhibited a new absorption band at 412 nm and emission enhancements in photoluminescence at 528 nm after adding As3+ ions. The limit of detection (LOD) for As3+ ions was calculated to be 16.5 and 7.19 × 10-9 M by the UV-visible and photoluminescent titration methods, respectively. The underlying mechanism and experimental observations have been comprehensively elucidated through techniques such as Job's plot, Benesi-Hildebrand studies, and density functional theory (DFT) calculations. For practical application, the efficient determination of As3+ ions were accomplished using a spike and recovery approach applied to real water samples. In addition, the developed probe was successfully employed in test strip applications, allowing for the naked-eye detection of arsenic ions. Moreover, fluorescence imaging experiments of As3+ ions in the breast cancer cell line (MCF-7) demonstrated their practical applications in biological systems. Consequently, these findings highlight the significant potential of the TZTS sensor for detecting As3+ ions in environmental analysis systems.
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Affiliation(s)
- Kumudhavalli Dhanasekaran
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore 632014, Tamil Nadu, India
| | - R Tamizhselvi
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore 632014, Tamil Nadu, India
| | - Sonaimuthu Mohandoss
- School of Chemical Engineering, Yeungnam University, Gyeongsan, Gyeongbuk-do 38541, Republic of Korea
| | - Maya Beena
- Centre for Biomaterials, Cellular and Molecular Theranostics (CBCMT), Vellore Institute of Technology (VIT), Vellore 632014, Tamil Nadu, India; School of Biosciences and Technology, Vellore Institute of Technology (VIT), Vellore 632014, Tamil Nadu, India
| | - Arunkumar Palaniappan
- Centre for Biomaterials, Cellular and Molecular Theranostics (CBCMT), Vellore Institute of Technology (VIT), Vellore 632014, Tamil Nadu, India
| | - Ayyakannu Arumugam Napoleon
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore 632014, Tamil Nadu, India.
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Nigam KK, Pandey MD. Zinc-Induced Luminescent l-Valine-Based Pseudopeptidic Soft Bioinspired Materials for Precise Tuning of Nanoassembly. ACS Biomater Sci Eng 2024; 10:1393-1402. [PMID: 38386412 DOI: 10.1021/acsbiomaterials.3c01954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2024]
Abstract
Pseudopeptide-based bioinspired materials are emerging for selective recognition of biologically significant analytes and are applicable in the modern nanoscience field. Therefore, we have developed novel multifunctional C2-symmetric soft pseudopeptides by amino acid l-valine and salicylaldehyde fragments using a series of aliphatic linkers. They are highly selective and sensitive to Zn (II) ions under physiological conditions and reveal significant fluorescence enhancement with the PET mechanism. The molecular self-assembly shows zinc-induced morphological transformation of the rod-shaped assembly into a chain-like morphology. Such a metal-induced hierarchical nano-assembly may have relevance for specific nanobiotechnology applications.
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Affiliation(s)
- Kamlesh Kumar Nigam
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Mrituanjay D Pandey
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221005, India
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Musikavanhu B, Liang Y, Xue Z, Feng L, Zhao L. Strategies for Improving Selectivity and Sensitivity of Schiff Base Fluorescent Chemosensors for Toxic and Heavy Metals. Molecules 2023; 28:6960. [PMID: 37836803 PMCID: PMC10574220 DOI: 10.3390/molecules28196960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 10/04/2023] [Accepted: 10/04/2023] [Indexed: 10/15/2023] Open
Abstract
Toxic cations, including heavy metals, pose significant environmental and health risks, necessitating the development of reliable detection methods. This review investigates the techniques and approaches used to strengthen the sensitivity and selectivity of Schiff base fluorescent chemosensors designed specifically to detect toxic and heavy metal cations. The paper explores a range of strategies, including functional group variations, structural modifications, and the integration of nanomaterials or auxiliary receptors, to amplify the efficiency of these chemosensors. By improving selectivity towards targeted cations and achieving heightened sensitivity and detection limits, consequently, these strategies contribute to the advancement of accurate and efficient detection methods while increasing the range of end-use applications. The findings discussed in this review offer valuable insights into the potential of leveraging Schiff base fluorescent chemosensors for the accurate and reliable detection and monitoring of heavy metal cations in various fields, including environmental monitoring, biomedical research, and industrial safety.
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Affiliation(s)
- Brian Musikavanhu
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China; (B.M.); (Y.L.); (Z.X.)
| | - Yongdi Liang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China; (B.M.); (Y.L.); (Z.X.)
| | - Zhaoli Xue
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China; (B.M.); (Y.L.); (Z.X.)
| | - Lei Feng
- Monash Suzhou Research Institute, Monash University, Suzhou Industrial Park, Suzhou 215000, China;
| | - Long Zhao
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China; (B.M.); (Y.L.); (Z.X.)
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Singh G, Devi A, Mohit, Diksha, Suman, Saini A, Kaur JD, Gupta S, Vikas. Synthesis, “turn-on” fluorescence signals towards Zn 2+ and Hg 2+ and monoamine oxidase A inhibitory activity using a molecular docking approach of morpholine analogue Schiff base linked organosilanes. NEW J CHEM 2022. [DOI: 10.1039/d2nj03767j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
A new set of morpholine analogue Schiff base linked organosilanes (5a–5c) was prepared.
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Affiliation(s)
- Gurjaspreet Singh
- Department of Chemistry & Centre of Advanced Studies, Panjab University, Chandigarh, 160014, India
| | - Anita Devi
- Department of Chemistry & Centre of Advanced Studies, Panjab University, Chandigarh, 160014, India
| | - Mohit
- Department of Chemistry & Centre of Advanced Studies, Panjab University, Chandigarh, 160014, India
| | - Diksha
- Department of Chemistry & Centre of Advanced Studies, Panjab University, Chandigarh, 160014, India
| | - Suman
- Department of Chemistry & Centre of Advanced Studies, Panjab University, Chandigarh, 160014, India
| | - Anamika Saini
- Department of Chemistry & Centre of Advanced Studies, Panjab University, Chandigarh, 160014, India
| | - Jashan Deep Kaur
- Department of Chemistry & Centre of Advanced Studies, Panjab University, Chandigarh, 160014, India
| | - Sofia Gupta
- Department of Chemistry & Centre of Advanced Studies, Panjab University, Chandigarh, 160014, India
| | - Vikas
- Department of Chemistry & Centre of Advanced Studies, Panjab University, Chandigarh, 160014, India
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