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Feng Y, Yuan J, Yang X, Ma X, Cheng Z. Developing an off-on fluorescence sensor based on red copper nanoclusters wrapped by sulfhydryl and polymer double ligands for sensitive detection of N-acetyl-L-cysteine. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2025; 324:125008. [PMID: 39182400 DOI: 10.1016/j.saa.2024.125008] [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: 06/21/2024] [Revised: 08/10/2024] [Accepted: 08/19/2024] [Indexed: 08/27/2024]
Abstract
N-acetyl-L-cysteine (NAC) as a class of thiols is commonly used in the treatment of lung diseases, detoxification and prevention of liver damage. In this paper, 4-mercaptobenzoic acid (4-MBA) coated and polyvinylpyrrolidone (PVP) attached copper nanoclusters (4-MBA@PVP-CuNCs) were successfully synthesized using a simple one-pot method with an absolute quantum yield of 10.98 %, and its synthetic conditions (like effects of single/double ligands and temperature) were studied intensively. Then Hg2+ could quench the fluorescence of the 4-MBA@PVP-CuNCs and its fluorescence was restored with the addition of NAC. Based on the above principles, an off-on switching system was established to detect NAC. That is, the 4-MBA@PVP-CuNCs-Hg probe was prepared by adding Hg2+ to switch off the fluorescence of the CuNCs by static quenching, and then NAC was added to switch on the fluorescence of the probe based on the chelation of NAC and Hg2+. Moreover, the effects of metal ion types and mercury ion doses for the probe construction were also further discussed. The method showed excellent linearity in the range of 0.05-1.25 µM and low detection limit of 16 nM. Meanwhile, good recoveries in real urine, tablets and pellets were observed, which proved the reliability of the method and provided a convenient, fast and sensitive method for NAC detection.
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Affiliation(s)
- Yao Feng
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, China West Normal University, Nanchong 637002, China
| | - Jingxue Yuan
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, China West Normal University, Nanchong 637002, China
| | - Xin Yang
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, China West Normal University, Nanchong 637002, China
| | - Xue Ma
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, China West Normal University, Nanchong 637002, China
| | - Zhengjun Cheng
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, China West Normal University, Nanchong 637002, China; Institute of Applied Chemistry, China West Normal University, Nanchong 637002, China.
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2
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Zhang JQ, Shen XF, Liu J. A highly selective dual-signal response ratiometric fluorescence sensing strategy for malachite green in fish based on carbon dots/copper nanoclusters nanocomposite. Food Chem 2024; 452:139543. [PMID: 38735107 DOI: 10.1016/j.foodchem.2024.139543] [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] [Received: 03/16/2024] [Revised: 04/23/2024] [Accepted: 05/01/2024] [Indexed: 05/14/2024]
Abstract
Malachite green (MG), a widely used antiparasitic agent, poses health risks to human due to its genotoxic and carcinogenic properties. Herein, a stable dual-emission fluoroprobe of carbon dots/copper nanoclusters is prepared for highly selective detection of MG based on the inner filter effect. This probe exhibits characteristic emission bands at 435 and 625 nm when excited at 376 nm. After adding MG, the both emission signals were significantly quenched, and the ratio of fluorescence intensity (F435/F625) was linearly related to the concentration of MG in the range of 0.05-40 μmol L-1 with a limit of detection of 18.2 nmol L-1. Meanwhile, the two signals exhibit linear relationships with the concentration of MG, respectively, and the corresponding detection results were consistent. The fluoroprobe was successfully used for the detection of MG in fish samples with the recoveries ranging from 96.0% to 103.8% and a relative standard deviation of <3.3%.
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Affiliation(s)
- Jun-Qiu Zhang
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Xiao-Fang Shen
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China.
| | - Jun Liu
- Technology Center of Chengdu Customs, Chengdu 610041, China.
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3
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Goswami N, Naithani S, Goswami T, Kumar P, Kumar P, Kumar S. Turn-on detection of Al 3+ ions using quinoline-based tripodal probe: mechanistic investigation and live cell imaging applications. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:5022-5031. [PMID: 38979779 DOI: 10.1039/d4ay00761a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/10/2024]
Abstract
In this study, an easily synthesizable Schiff base probe TQSB having a quinoline fluorophore is demonstrated as a fluorescent and colorimetric turn-on sensor for Al3+ ions in a semi-aqueous medium (CH3CN/water; 4 : 1; v/v). Absorption, emission and colorimetric studies clearly indicated that TQSB exhibited a high selectivity toward Al3+, as observed from its excellent binding constant (Kb = 3.8 × 106 M-1) and detection limit (7.0 nM) values. TQSB alone was almost non-fluorescent in nature; however, addition of Al3+ induced intense fluorescence at 414 nm most probably due to combined CHEF (chelation-enhanced fluorescence) and restricted PET effects. The sensing mechanism was established via Job's plot, NMR spectroscopy, ESI-mass spectrometry, and density functional theory (DFT) analyses. Furthermore, to evaluate the applied potential of probe TQSB, its sensing ability was studied in real samples such as soil samples and Al3+-containing Digene gastric tablets as well as on low-cost filter paper strips. Fluorescence microscopy imaging experiments further revealed that TQSB can be used as an effective probe to detect intracellular Al3+ in live cells with no cytotoxicity.
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Affiliation(s)
- Nidhi Goswami
- Department of Chemistry, Applied Science Cluster, University of Petroleum and Energy Studies (UPES), Dehradun-248007, Uttarakhand, India.
| | - Sudhanshu Naithani
- Department of Chemistry, Applied Science Cluster, University of Petroleum and Energy Studies (UPES), Dehradun-248007, Uttarakhand, India.
| | - Tapas Goswami
- Department of Chemistry, Applied Science Cluster, University of Petroleum and Energy Studies (UPES), Dehradun-248007, Uttarakhand, India.
| | - Pankaj Kumar
- Department of Chemistry, Applied Science Cluster, University of Petroleum and Energy Studies (UPES), Dehradun-248007, Uttarakhand, India.
| | - Pramod Kumar
- Department of Chemistry, Mahamana Malviya College Khekra (Baghpat), C. C. S. University, Meerut, India.
| | - Sushil Kumar
- Department of Chemistry, Applied Science Cluster, University of Petroleum and Energy Studies (UPES), Dehradun-248007, Uttarakhand, India.
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4
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Li F, Yin C, Lv K, Chen W, Zhao L, Liu Z, Hu L. Rapid identification of Radix Astragali origin by using fluorescence probe combined with chemometrics. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 312:124080. [PMID: 38422935 DOI: 10.1016/j.saa.2024.124080] [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: 12/19/2023] [Revised: 02/17/2024] [Accepted: 02/22/2024] [Indexed: 03/02/2024]
Abstract
Fluorescent probes for metal ion recognition can be divided into selective probes, weakly selective probes, and non-selective probes roughly. Weakly selective probes are not often used for quantitative analysis of metal ions due to their overlapping spectra resulting from simultaneous interactions with multiple metal ions. Conversely, the different metal ions contained in herbal medicine extracts from different geographical origins will produce corresponding fluorescence fingerprint profiles after interaction with weakly selective fluorescence probes. The performance can be used in the study of origin tracing of food or Chinese herbal medicine. Weakly selective fluorescent probes of benzimidazole derivatives have been synthesized and attempted to be used in the origin tracing of Radix Astragali in this work. Radix Astragali from different origins will produce different fluorescence fingerprint spectra due to the difference of metal ions and content in combination with the probe. Excitation-emission matrix (EEM) fluorescence spectroscopy in conjunction with N-way partial least squares discriminant analysis (N-PLS-DA), and unfolded partial least squares discriminant analysis (U-PLS-DA) were used to identify the origin of 150 Radix Astragali samples from five geographical origins. The prediction results showed that the correct recognition rates of the U-PLS-DA model and N-PLS-DA model are 95.92% and 93.88%, respectively. In comparison, the results of U-PLS-DA are slightly better than those of N-PLS-DA. These findings indicate that EEM fluorescence spectroscopy based on weakly selective fluorescent probes combined with multi-way chemometrics provides a good idea for the origin tracing of traditional Chinese medicine.
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Affiliation(s)
- Fang Li
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Chunling Yin
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Kaidi Lv
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Wenbo Chen
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Liuchuang Zhao
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Zhimin Liu
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Leqian Hu
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China.
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Sharma P, Naithani S, Yadav V, Sangeeta, Guchhait B, Kumar S, Goswami T. Indium nanocubes based recyclable fluorescent chemosensor for sustainable environmental monitoring: pH-induced fluorescence transition and selective detection of Pd(II) ions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 920:171043. [PMID: 38369158 DOI: 10.1016/j.scitotenv.2024.171043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2023] [Revised: 02/06/2024] [Accepted: 02/15/2024] [Indexed: 02/20/2024]
Abstract
Rapid modern industrialization and urbanization have escalated heavy metal pollution, with palladium (Pd2+) raising significant concerns due to its extensive usage in catalysis, hydrogen storage, and electronics, thereby imposing substantial risks on the environment and human health. In this study, we report a highly fluorescent indium nanocubes based chemosensor (InNCs) functionalized with perylene tetracarboxylic acid (PTCA) and 4-(pyridyl)ethenyl benzene (PEB). The InNCs exhibited emission maximum at 415 nm (λex ∼ 350 nm) with robust chemical and photo-stability, and acted as a fluorogenic probe for selective recognition of Pd2+ in aqueous medium. The fluorescence sensing properties of InNCs were thoroughly assessed via different techniques including steady-state absorption, emission and time-resolved emission spectroscopic methods. Among the various competitive analytes, only Pd2+ could induce a significant fluorescence quenching in the probe. This "turn-off" fluorescence sensing demonstrated a remarkably low LoD of ∼65 nM. Notably, with the addition of EDTA, the probe displayed good recyclability upto 4 cycles. The sensory probe was successfully employed as a reusable platform to estimate Pd(II) in different real water and soil samples with considerable accuracy (∼ 5-10 % error). Moreover, the probe exhibited a pH-induced fluorescence transition, indicating its potential to be applied as a pH sensor. The Pd(II) binding and pH-sensing mechanisms have also been elucidated through density functional theory (DFT) calculations.
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Affiliation(s)
- Pooja Sharma
- Department of Chemistry, Applied Sciences Cluster, University of Petroleum & Energy Studies (UPES), Energy Acres Building, Dehradun 248007, Uttarakhand, India
| | - Sudhanshu Naithani
- Department of Chemistry, Applied Sciences Cluster, University of Petroleum & Energy Studies (UPES), Energy Acres Building, Dehradun 248007, Uttarakhand, India
| | - Vikas Yadav
- Nanoscopic Imaging and Sensing Lab, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Sangeeta
- Department of Chemistry, School of Natural Sciences, Shiv Nadar Institution of Eminence, Delhi-NCR, Uttar Pradesh 201314, India
| | - Biswajit Guchhait
- Department of Chemistry, School of Natural Sciences, Shiv Nadar Institution of Eminence, Delhi-NCR, Uttar Pradesh 201314, India
| | - Sushil Kumar
- Department of Chemistry, Applied Sciences Cluster, University of Petroleum & Energy Studies (UPES), Energy Acres Building, Dehradun 248007, Uttarakhand, India.
| | - Tapas Goswami
- Department of Chemistry, Applied Sciences Cluster, University of Petroleum & Energy Studies (UPES), Energy Acres Building, Dehradun 248007, Uttarakhand, India.
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6
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Heena, Yadav V, Saini S, Roy P, Layek S, Goswami T, Kumar S. An Indole-based Chromofluorogenic Probe for Detection of Trivalent Al 3+, Ga 3+, In 3+ and Fe 3+ Ions. Chempluschem 2024; 89:e202300721. [PMID: 38385783 DOI: 10.1002/cplu.202300721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 02/22/2024] [Accepted: 02/22/2024] [Indexed: 02/23/2024]
Abstract
An easily synthesizable indole-derived chromofluorogenic probe InNS has been demonstrated for recognition of trivalent metal ions (i. e., Al3+, Ga3+, In3+ and Fe3+). Both UV-Vis and emission spectral studies have been employed to assess the cation sensing ability of InNS in semi-aqueous medium. This probe exhibited a chromogenic response for these metal ions, and the related change was accompanied with the appearance of a new absorption near 376 nm. An obvious color change from pale yellow to dark yellow could also be noticed upon addition of the aforementioned metal ions to the probe's solution. Distinctively from the UV-Vis analysis, the fluorescence behavior of InNS was completely different; it displayed a 'turn-on' fluorescence response for only Al3+ among all the studied cations. The detection limit and the association constant (Ka) for Al3+ were determined to be 12.5 nM and 6.85×106 M-1, respectively. A potential 1 : 1 binding mode of Al3+-InNS has been established based on Job's plot, 1H NMR and DFT analyses. The reversibility experiment was conducted using strongly chelating EDTA ion, and a corresponding logic gate has been devised. In terms of practical applications, the InNS has been utilized to detect Al3+ in human breast carcinoma (MCF-7) cell lines displaying promising 'turn-on' bioimaging experiments.
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Affiliation(s)
- Heena
- Department of Chemistry, School of Engineering, University of Petroleum & Energy Studies (UPES), 248007, Dehradun, Uttarakhand, India
| | - Vikas Yadav
- Nanoscopic Imaging and Sensing Lab, Indian Institute of Technology Delhi, Hauz Khas, 110016, New Delhi, India
| | - Saakshi Saini
- Department of Biosciences and Bioengineering, Indian Institute of Technology, 247667, Roorkee, Uttarakhand, India
| | - Partha Roy
- Department of Biosciences and Bioengineering, Indian Institute of Technology, 247667, Roorkee, Uttarakhand, India
| | - Samar Layek
- Department of Physics, School of Engineering, University of Petroleum & Energy Studies (UPES), 248007, Dehradun, Uttarakhand, India
| | - Tapas Goswami
- Department of Chemistry, School of Engineering, University of Petroleum & Energy Studies (UPES), 248007, Dehradun, Uttarakhand, India
| | - Sushil Kumar
- Department of Chemistry, School of Engineering, University of Petroleum & Energy Studies (UPES), 248007, Dehradun, Uttarakhand, India
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7
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Qu W, Zhang Y, Cao H, Jia L. A highly selective fluorescence turn-on sensor for Hg 2+ based on quinolimide in aqueous media and its applications. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 304:123376. [PMID: 37708757 DOI: 10.1016/j.saa.2023.123376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 09/01/2023] [Accepted: 09/07/2023] [Indexed: 09/16/2023]
Abstract
Herein, a novel fluorescent sensor QPE based on quinolimide was developed, which displayed the highly selective response to Hg2+ through the turn-on signal in aqueous media. The corresponding recognition mechanism of QPE for Hg2+ was investigated by the titration experiments, Job's plots, HRMS, and DFT calculations analysis. QPE could detect Hg2+ in a broad pH range (pH = 4-9) with the LOD of 20 nM and the LOQ of 66 nM. Meanwhile, QPE-loaded test strips were demonstrated in the visual detection of Hg2+. Importantly, QPE exhibited the reliable capability to track Hg2+ in real water and soil samples and yeast cells, indicating that QPE could be used as a prospective tool for monitoring Hg2+ in wide fields.
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Affiliation(s)
- Wenjing Qu
- College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar 161006, China
| | - Yu Zhang
- College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar 161006, China.
| | - Hongjie Cao
- College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar 161006, China
| | - Lihua Jia
- College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar 161006, China.
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