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Berhanu AL, Mohiuddin I, Malik AK, Aulakh JS. Synthesis, Characterization, Analytical Application, and Theoretical Studies of a Schiff Base, (E)-2-(2-aminophenylthio)-N-(Thiophen-2-yl-methylene) Benzenamine. J Fluoresc 2023:10.1007/s10895-023-03435-5. [PMID: 37707709 DOI: 10.1007/s10895-023-03435-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Accepted: 11/08/2022] [Indexed: 09/15/2023]
Abstract
In this study, a new Schiff base, (E)-2-(2-aminophenylthio)-N-(thiophen-2-yl-methylene) benzenamine was synthesized for selective detection of Hg2+. This Schiff base was characterized by proton nuclear magnetic resonance (1HNMR), carbon-13 nuclear magnetic resonance (13CNMR), and Fourier-transform infrared (FTIR) spectroscopy. Binding interaction between (E)-2-(2-aminophenylthio)-N-(thiophen-2-yl-methylene)benzenamine and various metal ions has been studied by UV-Vis spectroscopic measurements and shows promising coordination towards Hg2+ and almost no interference from other metal ions (Ag+, Mn2+, Fe3+, Al3+, Co2+, Ni2+, Cu2+, Zn2+, Cd2+, Fe2+ and Cr3+).This Schiff base exhibiting detection limit of 3.8 × 10- 8 M. The Schiff base newly synthesized in this study was successfully applied to the determination of Hg2+ in water samples. In addition to the experimental study, a theoretical study was conducted using Gaussian 09 program to support the experimental findings. FTIR, NMR, bond angle, bond length, torsional angles, and structural approximation were studied using theoretical consideration.
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Affiliation(s)
| | - Irshad Mohiuddin
- Department of Chemistry, Panjab University, Chandigarh, 160014, India
- Department of Chemistry, Punjabi University, Patiala, Punjab, 147002, India
| | - Ashok Kumar Malik
- Department of Chemistry, Punjabi University, Patiala, Punjab, 147002, India.
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John S, Bora D, Dhiman V, Tokala R, Samanthula G, Shankaraiah N. Ru(II)-Catalyzed Regioselective C-N Bond Formation on Benzothiazoles Employing Acyl Azide as an Amidating Agent. ACS OMEGA 2022; 7:1299-1310. [PMID: 35036791 PMCID: PMC8756580 DOI: 10.1021/acsomega.1c05910] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 12/16/2021] [Indexed: 06/14/2023]
Abstract
A Ru(II)-catalyzed regioselective direct ortho-amidation of 2-aryl benzo[d]thiazoles employing acyl azides as a nitrogen source has been accomplished. This approach utilizes the efficiency of benzothiazole as a directing group and the role of acyl azide as an effective amidating agent toward C-N bond formation, thereby evading the general Curtius rearrangement. The protocol highlights significant functional group tolerance, single-step, and external oxidant-free conditions, with the release of only innocuous molecular nitrogen as the byproduct. The reaction mechanism and the intermediates associated with this selective Ru-catalyzed reaction have been investigated using ESI-MS. The protocol also aided in the construction of ortho-amidated β-carbolines, unveiling another class of fluorescent molecules.
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Affiliation(s)
- Stephy
Elza John
- Department
of Medicinal Chemistry, National Institute
of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India
| | - Darshana Bora
- Department
of Medicinal Chemistry, National Institute
of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India
| | - Vivek Dhiman
- Department
of Pharmaceutical Analysis, National Institute
of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India
| | - Ramya Tokala
- Department
of Medicinal Chemistry, National Institute
of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India
| | - Gananadhamu Samanthula
- Department
of Pharmaceutical Analysis, National Institute
of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India
| | - Nagula Shankaraiah
- Department
of Medicinal Chemistry, National Institute
of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India
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Ravichandiran P, Kaliannagounder VK, Maroli N, Boguszewska-Czubara A, Masłyk M, Kim AR, Park BH, Han MK, Kim CS, Park CH, Yoo DJ. A dual-channel colorimetric and ratiometric fluorescence chemosensor for detection of Hg 2+ ion and its bioimaging applications. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 257:119776. [PMID: 33857751 DOI: 10.1016/j.saa.2021.119776] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 03/28/2021] [Accepted: 03/30/2021] [Indexed: 06/12/2023]
Abstract
A new colorimetric and ratiometric fluorescence chemosensor 4-((3-(octadecylthio)-1,4-dioxo-1,4-dihydronaphthalen-2-yl)amino)benzenesulfonamide (4DBS) was synthesized and investigated for the selective detection of Hg2+ in DMSO-H2O (9:1, v/v) solution. The chemosensor was efficiently synthesized in two steps via Michael-like addition and nucleophilic substitution reactions. The ratiometric fluorescence turn-on response was obtained towards Hg2+, and its fluorescence emission peak was red-shifted by 140 nm with an associated color change from light maroon to pale yellow due to the intramolecular charge transfer effect. The formed coordination metal complex was further evaluated by FT-IR, 1H NMR, and quantum chemical analyses to confirm the binding mechanism. The detection process was sensitive/reversible, and the calculated limit of detection for Hg2+ was 0.451 µM. Furthermore, 4DBS was effectively utilized as a bioimaging agent for detection of Hg2+ in live cells and zebrafish larvae. Additionally, 4DBS showed distinguishing detection of Hg2+ in cancer cells in comparison with normal cells. Thus, 4DBS could be employed as an efficient bioimaging probe for discriminative identification of human cancer cells.
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Affiliation(s)
- Palanisamy Ravichandiran
- R&D Education Center for Whole Life Cycle R&D of Fuel Cell Systems, Jeonbuk National University, Jeonju, Jeollabuk-do 54896, Republic of Korea; Department of Life Science, Graduate School, Department of Energy Storage/Conversion Engineering, Hydrogen and Fuel Cell Research Center, Jeonbuk National University, Jeonju, Jeollabuk-do 54896, Republic of Korea.
| | - Vignesh Krishnamoorthi Kaliannagounder
- Department of Bionanotechnology and Bioconvergence Engineering, Graduate School, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju-si, Jeollabuk-do 54896, Republic of Korea; Department of Bionanosystem Engineering, Graduate School, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju-si, Jeollabuk-do 54896, Republic of Korea
| | - Nikhil Maroli
- Center for Condensed Matter Theory, Department of Physics, Indian Institute of Science, Bangalore 560012, India
| | - Anna Boguszewska-Czubara
- Department of Medical Chemistry, Medical University of Lublin, ul. Chodźki 4A, 20-093 Lublin, Poland
| | - Maciej Masłyk
- Department of Molecular Biology, Faculty of Biotechnology and Environmental Sciences, The John Paul II Catholic University of Lublin, ul. Konstantynów 1i, 20-708 Lublin, Poland
| | - Ae Rhan Kim
- Department of Life Science, Graduate School, Department of Energy Storage/Conversion Engineering, Hydrogen and Fuel Cell Research Center, Jeonbuk National University, Jeonju, Jeollabuk-do 54896, Republic of Korea
| | - Byung-Hyun Park
- Department of Biochemistry, Jeonbuk National University Medical School, 567 Baekje-daero, Deokjin-gu, Jeonju-si, Jeollabuk-do 54896, Republic of Korea
| | - Myung-Kwan Han
- Department of Microbiology, Jeonbuk National University Medical School, 567 Baekje-daero, Deokjin-gu, Jeonju-si, Jeollabuk-do 54896, Republic of Korea
| | - Cheol Sang Kim
- Department of Bionanotechnology and Bioconvergence Engineering, Graduate School, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju-si, Jeollabuk-do 54896, Republic of Korea; Mechanical Design Engineering, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju-si, Jeollabuk-do 54896, Republic of Korea
| | - Chan Hee Park
- Department of Bionanotechnology and Bioconvergence Engineering, Graduate School, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju-si, Jeollabuk-do 54896, Republic of Korea; Mechanical Design Engineering, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju-si, Jeollabuk-do 54896, Republic of Korea
| | - Dong Jin Yoo
- R&D Education Center for Whole Life Cycle R&D of Fuel Cell Systems, Jeonbuk National University, Jeonju, Jeollabuk-do 54896, Republic of Korea; Department of Life Science, Graduate School, Department of Energy Storage/Conversion Engineering, Hydrogen and Fuel Cell Research Center, Jeonbuk National University, Jeonju, Jeollabuk-do 54896, Republic of Korea.
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Yu Y, Duan Q, Zhang X, Li X, Wang K, Liu C, Zhu B. A Highly Selective and Ultrasensitive Fluorescent Probe for Monitoring Hg 2+ and Its Applications in Real Water Samples. ANAL SCI 2019; 35:1251-1254. [PMID: 31353339 DOI: 10.2116/analsci.19p232] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Mercury ions as high toxic pollutants have received wide-spread attention because of their poisonousness, persistence and enrichment. To better understand the distribution of mercury species and supplement more detailed toxicological research, it is necessary to develop some methods for monitoring mercury ions with high sensitivity and selectivity. Therefore, a simple rhodol-based highly selective fluorescent probe, RH-Hg, has been developed for monitoring Hg2+ with thiocarbamate as the recognition receptor. The probe RH-Hg can quantificationally detect mercury ions in aqueous solution assisted by hydrogen peroxide (H2O2), and it can discriminate Hg2+ through "naked-eye" observation of the color changes from light orange to dark pink. Finally, the practical applications of the probe RH-Hg in the river water further demonstrated that it will be an effective and economical tool for monitoring the distribution of Hg2+ in the environment.
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Affiliation(s)
- Yamin Yu
- School of Water Conservancy and Environment, Shandong Provincial Engineering Technology Research Center for Ecological Carbon Sink and Capture Utilization, University of Jinan
| | - Qingxia Duan
- School of Water Conservancy and Environment, Shandong Provincial Engineering Technology Research Center for Ecological Carbon Sink and Capture Utilization, University of Jinan
| | - Xue Zhang
- School of Water Conservancy and Environment, Shandong Provincial Engineering Technology Research Center for Ecological Carbon Sink and Capture Utilization, University of Jinan
| | - Xiwei Li
- School of Water Conservancy and Environment, Shandong Provincial Engineering Technology Research Center for Ecological Carbon Sink and Capture Utilization, University of Jinan
| | - Kun Wang
- School of Water Conservancy and Environment, Shandong Provincial Engineering Technology Research Center for Ecological Carbon Sink and Capture Utilization, University of Jinan
| | - Caiyun Liu
- School of Water Conservancy and Environment, Shandong Provincial Engineering Technology Research Center for Ecological Carbon Sink and Capture Utilization, University of Jinan
| | - Baocun Zhu
- School of Water Conservancy and Environment, Shandong Provincial Engineering Technology Research Center for Ecological Carbon Sink and Capture Utilization, University of Jinan
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Liu Y, Ouyang Q, Li H, Chen M, Zhang Z, Chen Q. Turn-On Fluoresence Sensor for Hg 2+ in Food Based on FRET between Aptamers-Functionalized Upconversion Nanoparticles and Gold Nanoparticles. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:6188-6195. [PMID: 29847117 DOI: 10.1021/acs.jafc.8b00546] [Citation(s) in RCA: 88] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
In this study, a turn-on nanosensor for detecting Hg2+ was developed based on the fluorescence resonance energy transfer (FRET) between long-strand aptamers-functionalized upconversion nanoparticles (UCNPs) and short-strand aptamers-functionalized gold nanoparticles (GNPs). In the absence of Hg2+, FRET between UCNPs and GNPs occurred because of the specific matching between two aptamers, resulting in the fluorescence quenching of UCNPs. In the presence of Hg2+, long-stranded aptamers fold back into a hairpin structure due to the stable binding interactions between Hg2+ and thymine, leading to the release of GNPs from UCNPs, resulting in the quenched fluorescence restoration. Under the optimized conditions, the nanosensor achieved a linear detection range of 0.2-20 μM and a low detection limit (LOD) of 60 nM. Meanwhile, it showed good selectivity and has been applied to detecting Hg2+ in tap water and milk samples with good precision.
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Affiliation(s)
- Yan Liu
- School of Food and Biological Engineering , Jiangsu University , Zhenjiang 212013 , China
| | - Qin Ouyang
- School of Food and Biological Engineering , Jiangsu University , Zhenjiang 212013 , China
| | - Huanhuan Li
- School of Food and Biological Engineering , Jiangsu University , Zhenjiang 212013 , China
| | - Min Chen
- School of Food and Biological Engineering , Jiangsu University , Zhenjiang 212013 , China
| | - Zhengzhu Zhang
- State Key Laboratory of Tea Plant Biology and Utilization , Anhui Agricultural University , Hefei 210036 , China
| | - Quansheng Chen
- School of Food and Biological Engineering , Jiangsu University , Zhenjiang 212013 , China
- State Key Laboratory of Tea Plant Biology and Utilization , Anhui Agricultural University , Hefei 210036 , China
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