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Roy S, Choudhury P, Biswas B. Chelation therapy-inspired design of a water-stable fluorescent probe for the effectual monitoring of copper(II) ions in real water. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024. [PMID: 38979725 DOI: 10.1039/d4ay00808a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/10/2024]
Abstract
This work introduces a thought-provoking design to develop a water-soluble chemical probe, sodium 4-hydroxy-3-((E)-((E)-((2-hydroxynaphthalen-1yl)methylene)hydrazono)methyl) benzenesulfonate (SW2) and its analytical characterization for the efficient detection and monitoring of Cu2+ ions in a matrix of s-, d-, and f-metal ions in pure water. The water-stable molecular probe, SW2, in the presence of Cu2+ salts in pure water exhibits a fluorescence turn-off characteristic with a high detection limit, 3.8 μM, and irresistibly holds 4-cycle reversibility in the presence of sulphide ions without any significant loss of its chemosensing efficiency. Spectroscopic and computational studies ensure 1 : 1 complexation between SW2 and Cu2+ ions, leading to the formation of SW2-Cu2+ chelate, thus inducing dynamic quenching of SW2 emission, which subsequently reverts on the addition of S2- ions in water. Additionally, the SW2-Cu2+ chelate was isolated in microcrystalline powder and the complexation was studied with mass spectrometry and EPR analysis. Computational analysis reveals the remarkable reduction in the S0-S1 energy level of the SW2-Cu2+ complex, which is attributed to the drastic quenching of the fluorescence intensity. Furthermore, SW2 was successfully applied to the detection of Cu2+ ions in tap and pond water. Interestingly, the probe is also effective for the determination of Cu2+ ions in the aqueous solution of a Cu-based fungicide (copper oxychloride), commercially available as Blitox in India, thus evaluating the effectiveness of SW2 in real sample analysis.
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Affiliation(s)
- Suvojit Roy
- Department of Chemistry, University of North Bengal, Darjeeling-734013, India.
| | - Prosenjit Choudhury
- Department of Physics, Dr Meghnad Saha College, Uttar Dinajpur 733128, India
| | - Bhaskar Biswas
- Department of Chemistry, University of North Bengal, Darjeeling-734013, India.
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Tahir M, Aftab H, Shafiq I, Khalid M, Haq S, El-Kott AF, Zein MA, Hani U, Shafiq Z. Synthesis, characterization and NLO properties of 1,4-phenylenediamine-based Schiff bases: a combined theoretical and experimental approach. RSC Adv 2024; 14:4221-4229. [PMID: 38292270 PMCID: PMC10826287 DOI: 10.1039/d3ra07642c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Accepted: 01/01/2024] [Indexed: 02/01/2024] Open
Abstract
In the current study, three novel 1,4-phenylenediamine-based chromophores (3a-3c) were synthesized and characterized and then their nonlinear optical (NLO) characteristics were explored theoretically. The characterization was done by spectroscopic analysis, i.e. FT-IR, UV-Visible, and NMR spectroscopy, and elemental analysis. Notably, these chromophores exhibited UV-Visible absorption within the range of 378.635-384.757 nm in acetonitrile solvent. Additionally, the FMO findings for 3a-3c revealed the narrowest band gap (4.129 eV) for 3c. The GRPs for these chromophores were derived from HOMO-LUMO energy values, which showed correspondence with FMO results by depicting a minimum hardness (2.065 eV) for 3c. Among these compounds, 3c displayed the highest nonlinear behavior with maximum μtot, βtot and γtot values of 4.79 D, 8.00 × 10-30 and 8.13 × 10-34 a.u., respectively. Our findings disclosed that the synthesized 1,4-phenylenediamine chromophores may be considered promising candidates for nonlinear optical materials, showing potential applications in the realm of optoelectronic devices.
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Affiliation(s)
- Muhammad Tahir
- Institute of Chemical Sciences, Bahauddin Zakariya University Multan 60800 Pakistan
| | - Hina Aftab
- Institute of Chemical Sciences, Bahauddin Zakariya University Multan 60800 Pakistan
| | - Iqra Shafiq
- Institute of Chemistry, Khwaja Fareed University of Engineering & Information Technology Rahim Yar Khan 64200 Pakistan
- Centre for Theoretical and Computational Research, Khwaja Fareed University of Engineering & Information Technology Rahim Yar Khan 64200 Pakistan
| | - Muhammad Khalid
- Institute of Chemistry, Khwaja Fareed University of Engineering & Information Technology Rahim Yar Khan 64200 Pakistan
- Centre for Theoretical and Computational Research, Khwaja Fareed University of Engineering & Information Technology Rahim Yar Khan 64200 Pakistan
| | - Saadia Haq
- Institute of Chemistry, Khwaja Fareed University of Engineering & Information Technology Rahim Yar Khan 64200 Pakistan
- Centre for Theoretical and Computational Research, Khwaja Fareed University of Engineering & Information Technology Rahim Yar Khan 64200 Pakistan
| | - Attalla F El-Kott
- Biology Department, College of Science, King Khalid University Abha Saudi Arabia
- Zoology Department, College of Science, Damanhour University Egypt
| | - Mohamed Abdellatif Zein
- Chemistry Department, University College of AlWajh, University of Tabuk Tabuk Saudi Arabia
- Chemistry Department, Faculty of Science, Damanhour University Egypt
| | - Umme Hani
- Institute of Chemistry, Khwaja Fareed University of Engineering & Information Technology Rahim Yar Khan 64200 Pakistan
- Centre for Theoretical and Computational Research, Khwaja Fareed University of Engineering & Information Technology Rahim Yar Khan 64200 Pakistan
| | - Zahid Shafiq
- Institute of Chemical Sciences, Bahauddin Zakariya University Multan 60800 Pakistan
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Zhang M, Zhao Y, Bui B, Tang L, Xue J, Chen M, Chen W. The Latest Sensor Detection Methods for per- and Polyfluoroalkyl Substances. Crit Rev Anal Chem 2024:1-17. [PMID: 38234139 DOI: 10.1080/10408347.2023.2299233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2024]
Abstract
Per- and polyfluoroalkyl substances (PFASs) have emerged as a prominent environmental pollutant in recent years, primarily due to their tendency to accumulate and magnify in both the environment and living organisms. The entry of PFASs into the environment can have detrimental effects on human health. Hence, it is crucial to actively monitor and detect the presence of PFASs. The current standard detection method of PFAS is the combination of chromatography and mass spectrometry. However, this requires expensive instruments, extra sample pretreatment steps, complicated operation and long analysis time. As a result, new methods that do not rely on chromatography and mass spectrometry have been developed and applied. These alternative methods mainly include optical and electrochemical sensor methods, which offer great potential in terms of real-time field detection, instrument miniaturization, shorter analysis time, and reduced detection cost. This review provides a summary of recent advancements in PFAS detection sensors. We categorize and explain the principles and mechanisms of these sensors, and compare their limits of detection and sensitivity. Finally, we discuss the future challenges and improvements needed for PFAS sensors, such as field application, commercialization, and other related issues.
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Affiliation(s)
- Mingyu Zhang
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Shenyang, China
| | - Yanan Zhao
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Shenyang, China
| | - Brian Bui
- Department of Physics, The University of Texas at Arlington, Arlington, Texas, USA
| | - Liming Tang
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Shenyang, China
| | - Jiajia Xue
- Beijing Laboratory of Biomedical Materials and State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, China
| | - Mingli Chen
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Shenyang, China
| | - Wei Chen
- Department of Physics, The University of Texas at Arlington, Arlington, Texas, USA
- School of CHIPS, Xi'an Jiaotong-Loverpool University, Suzhou, China
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4
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Tokalıoğlu Ş, Demirişler MS, Şahan H, Patat Ş. Environmentally friendly nanoflower Al 2O 3@carbon spheres as adsorbent for dispersive solid-phase microextraction of copper and lead in food and water samples. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2023; 15:5846-5854. [PMID: 37874290 DOI: 10.1039/d3ay01579c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
A fast and simple dispersive solid-phase microextraction method (d-SPμE) was described for the determination of copper and lead in food, water, and sediments using FAAS. Firstly, nanoflower Al2O3@carbon spheres composite (NF Al2O3@CSs) was synthesized and then characterized. The obtained NF Al2O3@CSs was used for the d-SPμE of copper and lead in aqueous solutions. The influence of important parameters like pH, contact time, eluent conditions, volume of sample, and competing ion effects on the d-SPμE efficiency of copper and lead was investigated. They were pH, 7; eluent, 2 mol L-1 HCl (2 mL); sample volume, 250 mL for copper and 150 mL for lead with recoveries ≥90%. The adsorption and elution of analytes on NF Al2O3@CSs were realized quickly without vortexing. The LODs of the d-SPμE for copper and lead were found to be 0.69 μg L-1 and 2.8 μg L-1, respectively, while its PF was 125 for copper and 75 for lead. The intra-day precision and inter-day repeatability (RSD%, n = 7) were 1.3% and 1.6% for Cu(II) and 2.3% and 3.2% for Pb(II), respectively. Finally, the accuracy of the d-SPμE was investigated by determination of the analytes in four certified reference materials (TMDA-53.3 Lake water, NW-TMDA-54.6 Lake water, NIST 1573a Tomato leaves, and NIST RM 8704 Buffalo River Sediment). The analyte recoveries together with analyses of dam water, river water, wastewater, sea water, sumac, tea, chocolate, and lentils were studied. The results indicate that recoveries ranged from 90 to 103% in water samples and 91 to 110% in food samples.
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Affiliation(s)
- Şerife Tokalıoğlu
- Erciyes University, Faculty of Sciences, Chemistry Department, 38039, Kayseri, Turkey.
| | | | - Halil Şahan
- Kayseri University, Department of Basic Sciences of Engineering, 38280, Kayseri, Turkey
| | - Şaban Patat
- Erciyes University, Faculty of Sciences, Chemistry Department, 38039, Kayseri, Turkey.
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5
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Liu T, Wang L, Jiang R, Tang Y, He Y, Sun C, Lv Y, Liu S. Fluorescence Properties of ZnOQDs-GO-g-C 3N 4 Nanocomposites. MICROMACHINES 2023; 14:711. [PMID: 37420944 DOI: 10.3390/mi14040711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Revised: 03/17/2023] [Accepted: 03/20/2023] [Indexed: 07/09/2023]
Abstract
In this paper, the fluorescence properties of ZnOQD-GO-g-C3N4 composite materials (ZCGQDs) were studied. Firstly, the addition of a silane coupling agent (APTES) in the synthesis process was explored, and it was found that the addition of 0.04 g·mL-1 APTES had the largest relative fluorescence intensity and the highest quenching efficiency. The selectivity of ZCGQDs for metal ions was also investigated, and it was found that ZCGQDs showed good selectivity for Cu2+. ZCGQDs were optimally mixed with Cu2+ for 15 min. ZCGQDs also had good anti-interference capability toward Cu2+. There was a linear relationship between the concentration of Cu2+ and the fluorescence intensity of ZCGQDs in the range of 1~100 µM. The regression equation was found to be F0/F = 0.9687 + 0.12343C. The detection limit of Cu2+ was about 1.74 μM. The quenching mechanism was also analyzed.
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Affiliation(s)
- Tianze Liu
- College of Clinical Medicine, Jiamusi University, Jiamusi 154007, China
| | - Lei Wang
- College of Pharmacy, Jiamusi University, Jiamusi 154007, China
| | - Ruxue Jiang
- College of Pharmacy, Jiamusi University, Jiamusi 154007, China
| | - Yashi Tang
- College of Pharmacy, Jiamusi University, Jiamusi 154007, China
| | - Yuxin He
- College of Pharmacy, Jiamusi University, Jiamusi 154007, China
| | - Changze Sun
- School of Mechanical Engineering, Jiamusi University, Jiamusi 154007, China
| | - Yuguang Lv
- College of Pharmacy, Jiamusi University, Jiamusi 154007, China
| | - Shuang Liu
- College of Basic Medicine, Jiamusi University, Jiamusi 154007, China
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Liu X, Liu Y, Feng S, Lu L. Two luminescent Zn(II) coordination complexes as fluorescence-responsive sensors for efficient detection of Cu2+ ions. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.134570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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7
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Lv X, Zhang Y, Wang X, Hu L, Shi C. Multilayer Graphene Oxide Supported ZIF-8 for Efficient Removal of Copper Ions. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3162. [PMID: 36144950 PMCID: PMC9503737 DOI: 10.3390/nano12183162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 09/05/2022] [Accepted: 09/08/2022] [Indexed: 06/16/2023]
Abstract
To address the performance deterioration of ZIF-8 for the adsorption of copper ions caused by powder volume pressure and particle aggregation, we employed multilayer graphene oxide (MGO) as a support to prepare composite adsorbents (MGO@ZIF-8) by using the in situ growth of ZIF-8 on MGO. Due to a good interfacial compatibility and affinity between ZIF-8 and graphene nanosheets, the MGO@ZIF-8 was successfully prepared. The optimal Cu2+ adsorption conditions of MGO@ZIF-8 were obtained through single factor experiments and orthogonal experiments. Surprisingly, the Cu2+ adsorption capacity was significantly improved by the integration of MGO and ZIF-8, and the maximum Cu2+ adsorption capacity of MGO@ZIF-8 reached 431.63 mg/g under the optimal adsorption conditions. Furthermore, the kinetic fitting and isotherm curve fitting confirmed that the adsorption law of Cu2+ by MGO@ZIF-8 was the pseudo-second-order kinetic model and the Langmuir isotherm model, which indicated that the process of Cu2+ adsorption was monolayer chemisorption. This work provides a new approach for designing and constructing ZIF-8 composites, and also offers an efficient means for the removal of heavy metals.
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Affiliation(s)
- Xifeng Lv
- College of Chemistry and Chemical Engineering, Tarim University, Alar 843300, China
- Engineering Laboratory of Chemical Resources Utilization in South Xinjiang of Xinjiang Production and Construction Corps, Alar 843300, China
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yishi Zhang
- College of Chemistry and Chemical Engineering, Tarim University, Alar 843300, China
| | - Xiaodong Wang
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Libing Hu
- College of Chemistry and Chemical Engineering, Tarim University, Alar 843300, China
| | - Chunhui Shi
- College of Chemistry and Chemical Engineering, Tarim University, Alar 843300, China
- Engineering Laboratory of Chemical Resources Utilization in South Xinjiang of Xinjiang Production and Construction Corps, Alar 843300, China
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8
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Zeng X, Zhang G, Zhu J. Selective adsorption of heavy metals from water by a hyper-branched magnetic composite material: Characterization, performance, and mechanism. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 314:114979. [PMID: 35452884 DOI: 10.1016/j.jenvman.2022.114979] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 03/24/2022] [Accepted: 03/24/2022] [Indexed: 06/14/2023]
Abstract
The development of adsorbents to remove heavy metal ions from water with recyclable, high adsorption capacity, strong selectivity, safe, and economic performances has always been the focus and challenge of current research. A hyper-branched magnetic composite material (Fe3O4@SiO2-S4) was fabricated by a method combining "grafting,", "branching," and "modification,", and the structure was characterized by FTIR, XRD, SEM, TEM, SAED, VSM, TGA, and BET. In addition, the adsorption performance and mechanism for heavy metal ions in water were studied. The as-prepared composite material had excellent selective absorbability for Hg2+, Cd2+, and Ag+ in the presence of Fe3+, Fe2+, Cu2+, Mn2+, CO2+, Zn2+, and Ni2+, and when pH = 6, T = 30 °C, t = 4 h, it reached a saturated adsorption capacity of 2.42, 2.18, and 1.94 mmol/g to Hg2+, Cd2+, and Ag+, respectively. The adsorption isotherm was consistent with the Langmuir isotherm adsorption model, and the Dubinin Redushcke (D-R) model identified that the adsorption was chemical adsorption in nature. The adsorption kinetic followed the pseudo-second-order model and Boyd film diffusion models. The adsorption capacity of as-prepared material remained about 83% after five elutions. The adsorption mechanism and selective adsorption were revealed by FTIR, EDS, XPS, and DFT calculation. N atoms and O atoms of the active functional groups complexed with metal ions to form stable 2 heptachate chelates and 1 tridentate chelate to achieve the effect of adsorption; furthermore, the adsorption was mainly governed by N atoms of Schiff base groups. This work not only explored an innovative method for the construction of adsorbing materials but also provided a promising adsorbent to selectively remove heavy metal ions in water with potential application.
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Affiliation(s)
- Xiangchu Zeng
- Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi'an, Shaanxi, 710021, PR China.
| | - Guanghua Zhang
- Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi'an, Shaanxi, 710021, PR China.
| | - Junfeng Zhu
- Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi'an, Shaanxi, 710021, PR China.
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9
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Imamoglu M. Novel determination of copper(II) in natural waters by solid-phase extraction (SPE) flow-injection (FI) flame atomic absorption spectrometry (FAAS). ANAL LETT 2022. [DOI: 10.1080/00032719.2022.2092632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Affiliation(s)
- Mustafa Imamoglu
- Sciences and Arts Faculty, Chemistry Department, Sakarya University, Sakarya, Turkey
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10
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Jiang D, Zhang X, Chen Y, Zhang P, Gong P, Cai L, Wang Y. An α-naphtholphthalein-derived colorimetric fluorescent chemoprobe for the portable and visualized monitoring of Hg 2+ by the hydrolysis mechanism. NEW J CHEM 2022. [DOI: 10.1039/d2nj01051h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
An ɑ-naphtholphthalein-derived colorimetric fluorescent chemoprobe was elaborately designed for the portable and visual monitoring of Hg2+ in environmental and biological samples.
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Affiliation(s)
- Daoyong Jiang
- Guangdong Key Laboratory of Nanomedicine, CAS Key Laboratory of Health Informatics, Shenzhen Bioactive Materials Engineering Lab for Medicine, Institute of Biomedicine and Biotechnology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
- Postdoctoral Innovation Practice Base, Shenzhen Polytechnic, Shenzhen 518055, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiuwen Zhang
- Guangdong Key Laboratory of Nanomedicine, CAS Key Laboratory of Health Informatics, Shenzhen Bioactive Materials Engineering Lab for Medicine, Institute of Biomedicine and Biotechnology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yizhao Chen
- Guangdong Key Laboratory of Nanomedicine, CAS Key Laboratory of Health Informatics, Shenzhen Bioactive Materials Engineering Lab for Medicine, Institute of Biomedicine and Biotechnology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
- Postdoctoral Innovation Practice Base, Shenzhen Polytechnic, Shenzhen 518055, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Pengfei Zhang
- Guangdong Key Laboratory of Nanomedicine, CAS Key Laboratory of Health Informatics, Shenzhen Bioactive Materials Engineering Lab for Medicine, Institute of Biomedicine and Biotechnology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Ping Gong
- Guangdong Key Laboratory of Nanomedicine, CAS Key Laboratory of Health Informatics, Shenzhen Bioactive Materials Engineering Lab for Medicine, Institute of Biomedicine and Biotechnology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Lintao Cai
- Guangdong Key Laboratory of Nanomedicine, CAS Key Laboratory of Health Informatics, Shenzhen Bioactive Materials Engineering Lab for Medicine, Institute of Biomedicine and Biotechnology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Yong Wang
- Postdoctoral Innovation Practice Base, Shenzhen Polytechnic, Shenzhen 518055, China
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Goel A, Tomer N, Ghule VD, Malhotra R. A multi-responsive pyranone based Schiff base for the selective, sensitive and competent recognition of copper metal ions. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 249:119221. [PMID: 33257246 DOI: 10.1016/j.saa.2020.119221] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 11/05/2020] [Accepted: 11/10/2020] [Indexed: 06/12/2023]
Abstract
Exploring a new multi-responsive pyranone chemosensor capable of sensing copper ions specifically and selectively through colorimetric, UV-Vis absorption and fluorescence methods is of great importance. In this piece of work, a novel pyranone based Schiff base ligand 4-Hydroxy-6-methyl-3-[1-(2-morpholin-4-yl-ethylimino)-ethyl]-pyran-2-one (DM) was synthesized by the condensation of dehydroacetic acid and 4-(2-aminoethyl) morpholine. The structural determination of ligand DM was executed using distinct spectral techniques i.e.,1H NMR, 13C NMR, FT-IR and HR-MS techniques. The reported Schiff base DM showed an immediate colorimetric change from pale yellow to colorless accompanied by a strong change in the UV-Vis absorption band onto the addition of Cu (II) ions. This metal ligand chelation leads a decrease in ICT process. Also the decrease in fluorescence emission intensity of Schiff base DM with Cu (II) ions addition showed its turn-off behavior towards copper ions. Further absorption/ emission titration studies, Job's plot, HR-MS and 1H NMR titration data designated 2:1 stoichiometric ratio between DM and Cu (II) ions respectively. Density functional theory studies were also performed to authenticate the binding mechanism theoretically. The sensitivity of Schiff base DM towards Cu (II) ions was applicable at every pH conditions and at the same time DM exhibited selectivity towards Cu (II) ions with a negligible interference of other metal ions. DM showed a detection limit of 7.7 nM towards copper ions via fluorescence emission studies. The best part about DM is that it has good stability but showed an instant chemical reversibility when titrated with EDTA solution.
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Affiliation(s)
- Apurva Goel
- Department of Chemistry, Guru Jambheshwar University of Science and Technology, Hisar 125001, India
| | - Nisha Tomer
- Department of Chemistry, Guru Jambheshwar University of Science and Technology, Hisar 125001, India
| | - Vikas D Ghule
- Department of Chemistry, National Institute of Technology, Kurukshetra 136119, India
| | - Rajesh Malhotra
- Department of Chemistry, Guru Jambheshwar University of Science and Technology, Hisar 125001, India.
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12
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Zhou Z, Tang H, Chen S, Huang Y, Zhu X, Li H, Zhang Y, Yao S. A turn-on red-emitting fluorescent probe for determination of copper(II) ions in food samples and living zebrafish. Food Chem 2020; 343:128513. [PMID: 33158680 DOI: 10.1016/j.foodchem.2020.128513] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 10/26/2020] [Accepted: 10/27/2020] [Indexed: 12/21/2022]
Abstract
Herein, we developed a turn-on red-emitting fluorescent probe for the sensitive and selective detection of copper ions (Cu2+) in food samples and living zebrafish. The probe employs a hemicyanine scaffold as the fluorophore and a 2-pyridinecarbonyl group as the recognition receptor and quenching moiety. The 2-pyridinecarbonyl moiety can be specifically cleaved by Cu2+ and results in an approximately 18-fold fluorescence enhancement of the probe, thereby providing a fluorescence turn-on assay for Cu2+. Additionally, the probe exhibited excellent selectivity, high sensitivity, a broad linear relationship (0.020 to 8.0 μM), and a low limit of detection (4.0 nM, S/N = 3) for Cu2+. Concomitantly, the probe exhibited satisfactory analytical performance when used with actual food samples. Moreover, the probe could be used for in situ determination of Cu2+ in both living plant tissues and in living zebrafish.
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Affiliation(s)
- Zile Zhou
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, PR China
| | - Huihui Tang
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, PR China
| | - Shengyou Chen
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, PR China
| | - Yinghui Huang
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, PR China
| | - Xiaohua Zhu
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, PR China.
| | - Haitao Li
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, PR China.
| | - Youyu Zhang
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, PR China
| | - Shouzhuo Yao
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, PR China
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Yang JY, Jia XD, Wang XY, Chen ML, Yang T, Wang JH. Mercury speciation based on mercury-stimulated peroxidase mimetic activity of gold nanoparticles. Analyst 2020; 145:5200-5205. [PMID: 32555886 DOI: 10.1039/d0an00803f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Mercury speciation is of significant importance in environmental and biological analysis because its toxicity and metabolic behavior in the human body differ among species. Nanomaterial-assisted optical sensors are widely used for mercury ion detection but rarely applied in mercury speciation analysis. In this work, we develop a novel colorimetric sensing strategy for mercury speciation based on mercury-stimulated peroxidase mimetic activity of gold nanoparticles with the assistance of different reductants. In the presence of a weak reductant, only inorganic mercury can be reduced to Hg0, whereas both inorganic mercury and organic mercury can be reduced to Hg0 in the presence of a strong reductant. Due to the high affinity between Hg and Au, Hg0 deposits on the AuNP surface in the form of a Au-Hg amalgam, leading to a remarkable enhancement of peroxidase mimetic activity of gold nanoparticles. On the basis of this effect, inorganic mercury and total mercury can be detected by using 3,3',5,5'-tetramethylbenzidine (TMB) as the substrate. The limits of detection for inorganic mercury and total mercury are 1.9 and 0.9 nM within 5-100 nM, respectively. The selectivity of this sensing system is high due to the specificity of Au-Hg interaction. Its practical applications are further demonstrated by organic mercury analysis in a fish sample and mercury speciation in a human hair sample.
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Affiliation(s)
- Jian-Yu Yang
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Box 332, Shenyang 110819, China.
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Cheng C, Zhang R, Wang J, Zhang Y, Wen C, Tan Y, Yang M. An ultrasensitive and selective fluorescent nanosensor based on porphyrinic metal–organic framework nanoparticles for Cu2+ detection. Analyst 2020; 145:797-804. [DOI: 10.1039/c9an02231g] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
A fluorescent nanosensor based on ultrasmall MOF-525 NPs was proposed for the monitoring of Cu2+ in aqueous solution and living cells.
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Affiliation(s)
- Changming Cheng
- Department of Biomedical Engineering
- the Hong Kong Polytechnic University
- Kowloon
- PR China
- Institute of Nuclear Physics and Chemistry
| | - Ruolin Zhang
- Department of Biomedical Engineering
- the Hong Kong Polytechnic University
- Kowloon
- PR China
| | - Jiuhai Wang
- Department of Biomedical Engineering
- the Hong Kong Polytechnic University
- Kowloon
- PR China
| | - Yu Zhang
- Mechanical & Automotive Engineering
- School of Engineering
- RMIT University
- Melbourne
- Australia
| | - Chunyi Wen
- Department of Biomedical Engineering
- the Hong Kong Polytechnic University
- Kowloon
- PR China
| | - Youhua Tan
- Department of Biomedical Engineering
- the Hong Kong Polytechnic University
- Kowloon
- PR China
| | - Mo Yang
- Department of Biomedical Engineering
- the Hong Kong Polytechnic University
- Kowloon
- PR China
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15
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Zhou T, Che G, Ding L, Sun D, Li Y. Recent progress of selective adsorbents: From preparation to complex sample pretreatment. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2019.115678] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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