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Queffélec C, Pati PB, Pellegrin Y. Fifty Shades of Phenanthroline: Synthesis Strategies to Functionalize 1,10-Phenanthroline in All Positions. Chem Rev 2024; 124:6700-6902. [PMID: 38747613 DOI: 10.1021/acs.chemrev.3c00543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2024]
Abstract
1,10-Phenanthroline (phen) is one of the most popular ligands ever used in coordination chemistry due to its strong affinity for a wide range of metals with various oxidation states. Its polyaromatic structure provides robustness and rigidity, leading to intriguing features in numerous fields (luminescent coordination scaffolds, catalysis, supramolecular chemistry, sensors, theranostics, etc.). Importantly, phen offers eight distinct positions for functional groups to be attached, showcasing remarkable versatility for such a simple ligand. As a result, phen has become a landmark molecule for coordination chemists, serving as a must-use ligand and a versatile platform for designing polyfunctional arrays. The extensive use of substituted phenanthroline ligands with different metal ions has resulted in a diverse array of complexes tailored for numerous applications. For instance, these complexes have been utilized as sensitizers in dye-sensitized solar cells, as luminescent probes modified with antibodies for biomaterials, and in the creation of elegant supramolecular architectures like rotaxanes and catenanes, exemplified by Sauvage's Nobel Prize-winning work in 2016. In summary, phen has found applications in almost every facet of chemistry. An intriguing aspect of phen is the specific reactivity of each pair of carbon atoms ([2,9], [3,8], [4,7], and [5,6]), enabling the functionalization of each pair with different groups and leading to polyfunctional arrays. Furthermore, it is possible to differentiate each position in these pairs, resulting in non-symmetrical systems with tremendous versatility. In this Review, the authors aim to compile and categorize existing synthetic strategies for the stepwise polyfunctionalization of phen in various positions. This comprehensive toolbox will aid coordination chemists in designing virtually any polyfunctional ligand. The survey will encompass seminal work from the 1950s to the present day. The scope of the Review will be limited to 1,10-phenanthroline, excluding ligands with more intracyclic heteroatoms or fused aromatic cycles. Overall, the primary goal of this Review is to highlight both old and recent synthetic strategies that find applicability in the mentioned applications. By doing so, the authors hope to establish a first reference for phenanthroline synthesis, covering all possible positions on the backbone, and hope to inspire all concerned chemists to devise new strategies that have not yet been explored.
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Affiliation(s)
| | | | - Yann Pellegrin
- Nantes Université, CEISAM UMR 6230, F-44000 Nantes, France
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2
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Barkale HV, Dey N. Tuning Sensing Efficacy of Oligo(phenylenevinylene) Based Chromogenic Probes: Effect of Alkyl Substituents on Metal Ion Detection at Micelle-Water Interface. Chem Asian J 2024; 19:e202400058. [PMID: 38436497 DOI: 10.1002/asia.202400058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 02/15/2024] [Accepted: 02/25/2024] [Indexed: 03/05/2024]
Abstract
In this work, we conducted a comparative analysis of the metal ion sensing capabilities of two pyridine-end oligo p-phenylenevinylene compounds featuring different alkyl substituents (-C4H9 and -C16H33) within a micelle medium. Our findings revealed a correlation between the positioning of the probe molecules within the micelle and the length of the alkyl chains, impacting their self-assembly tendencies and optical characteristics. The compound with shorter alkyl chains demonstrated a superior affinity towards Hg2+ ions, whereas exposure to the compound with longer alkyl substituent resulted in a color-changing response with both Cu2+and Hg2+ ions. Intriguingly, the sensitivity towards Hg2+ ions heightened with increasing alkyl chain length. This trend persisted in non-polar solvents like THF. The capacity to modulate sensing efficacy solely by adjusting the length of the alkyl chains represents a relatively uncommon occurrence in the existing literature. This discovery suggests promising prospects for engineering sensory devices equipped with adaptable sensitivity.
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Affiliation(s)
- Harshal V Barkale
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Hyderabad, 500078, Telangana, India
| | - Nilanjan Dey
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Hyderabad, 500078, Telangana, India
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3
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Mondal S, Ahmad I, Dey N. Multifaceted Applications of Luminescent Metalloporphyrin Derivatives: Fluorescence Turn-On Sensing of Nicotine and Antimicrobial Activity. ACS APPLIED BIO MATERIALS 2024; 7:2346-2353. [PMID: 38556982 DOI: 10.1021/acsabm.4c00031] [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: 04/04/2024]
Abstract
In this study, we designed and synthesized metalloporphyrin derivatives (with Ni and Zn) specifically intended for the fluorescence detection of nicotine in aqueous solutions. Our results showcased a notable selectivity for nicotine over other naturally occurring food toxins, exhibiting an exceptional sensitivity with a limit of detection as low as 7.2 nM. Through mechanistic investigations (1H NMR, FT-IR, etc.), we elucidated the binding mechanism, revealing the specific interaction between the pyridine ring of nicotine and the metal center, while the N atom pyrrolidine unit engaged in the hydrogen bonding with the side chain of the porphyrin ring. Notably, we observed that the nature of the metal center dictated the extent of interaction with nicotine; particularly, Zn-porphyrin demonstrated a superior response compared to Ni-porphyrin. Furthermore, we performed the quantitative estimation of nicotine in commercially available tobacco products. Additionally, we conducted the antibacterial (Staphylococcus aureus and Escherichia coli) and antifungal (Candida albicans) activities of the porphyrin derivatives.
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Affiliation(s)
- Sourav Mondal
- Department of Chemistry, BITS-Pilani Hyderabad Campus, Shameerpet, Hyderabad, 500078 Telangana, India
| | - Imran Ahmad
- Department of Molecular Medicine & Biotechnology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow 226014, India
| | - Nilanjan Dey
- Department of Chemistry, BITS-Pilani Hyderabad Campus, Shameerpet, Hyderabad, 500078 Telangana, India
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Pal A, Dey N. Surfactant-induced alterations in optoelectronic properties of perylene diimide dyes: modulating sensing responses in the aqueous environment. SOFT MATTER 2024; 20:3044-3052. [PMID: 38525678 DOI: 10.1039/d3sm01694c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/26/2024]
Abstract
The compartmentalization effect of microheterogeneous systems, like surfactant aggregates, showcases altered optoelectronic properties of a perylene diimide-based chromogenic dye (PDI-Ala) compared to bulk water. The relatively hydrophobic microenvironment, poor hydration, and exceptionally large local concentration of dye molecules in the confined environment affect their interaction with target analytes. This realization intrigued us to investigate if micellization can modify the sensing properties (selectivity, sensitivity, response kinetics, output signal, etc.) of the encapsulated dye molecules in the aqueous medium. Response comparisons of PDI-Ala to the ionic analyte (Fe3+) and biomolecule (heparin) in aqueous and surfactant-bound states highlighted significant variations. Fe3+ interaction exhibited a "turn-off" fluorescence response in a water medium, while surfactant-bound conditions triggered "turn-on" fluorescence, enhancing selectivity at the micelle-water interface. Conversely, the native probe showed no interaction with heparin in water but displayed a turn-on fluorescence response in cetyltrimethylammonium bromide (CTAB) micelles, indicating the transformation of a silent molecule into a turn-on fluorescence sensor. This study underscores the influence of micellar environments on dye molecules, altering the sensing responses and selectivity toward analytes, crucial for applications in understanding cellular pathways and toxicity mechanisms.
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Affiliation(s)
- Animesh Pal
- Department of Chemistry, BITS-Pilani Hyderabad Campus, Hyderabad, 500078, India.
| | - Nilanjan Dey
- Department of Chemistry, BITS-Pilani Hyderabad Campus, Hyderabad, 500078, India.
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Chettri B, Pal A, Jha S, Dey N. Tuning sensing efficacy of anthraimidazoledione-based charge transfer dyes: nitro group positioning impact. Dalton Trans 2024; 53:6343-6351. [PMID: 38488109 DOI: 10.1039/d3dt04172g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Anthraimidazoledione-based optical sensors have been designed by varying the position of the nitro functional group. All three positional isomers showed highly colored, photostable optical signals owing to intramolecular charge transfer interactions. Despite having the same anion-binding site (imidazole unit), the selectivity and sensitivity of the compounds depend on the positioning of the nitro group. The selectivity was fairly good for the meta isomer, followed by the ortho and para isomers, respectively. In contrast, the sensitivity towards anions followed a completely opposite trend, with the para isomer being the most sensitive one towards anions. Interestingly, the color changing response along the turn-on fluorescence signal was observed only with CN- ions in a semi-aqueous environment. Though the introduction of water as a co-solvent could improve the selectivity, the sensitivity was found to be slightly less than that observed in pure organic medium. Mechanistic studies indicated hydrogen bonding interactions between the imidazole -NH proton and cyanide, which further facilitated the extent of intramolecular charge transfer.
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Affiliation(s)
- Bimal Chettri
- Department of Chemistry, Sikkim Manipal Institute of Technology, Sikkim Manipal University, Majitar, Sikkim 737136, India
| | - Animesh Pal
- Department of Chemistry, Birla Institute of Technology and Sciences-Pilani Hyderabad Campus, Shameerpet, Hyderabad 500078, Telangana, India.
| | - Satadru Jha
- Department of Chemistry, Sikkim Manipal Institute of Technology, Sikkim Manipal University, Majitar, Sikkim 737136, India
| | - Nilanjan Dey
- Department of Chemistry, Birla Institute of Technology and Sciences-Pilani Hyderabad Campus, Shameerpet, Hyderabad 500078, Telangana, India.
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Pal A, Dey N. Oxidized Bisindolyl-Based Amphiphilic Probe for Dual Mode Analysis of Heavy Metal Pollutants in Aqueous Medium. J Fluoresc 2024:10.1007/s10895-023-03393-y. [PMID: 38319519 DOI: 10.1007/s10895-023-03393-y] [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: 07/19/2023] [Accepted: 08/10/2023] [Indexed: 02/07/2024]
Abstract
The oxidized bisindolyl-based amphiphilic, chromogenic probe has been synthesized that can form nanoscopic aggregates in the aqueous medium. Along with solvent polarity and pH of the medium, it was observed that the addition of heavy metal pollutants, like Hg2+ can cause significant alteration in the charge transfer state. This resulted in the immediate change in the solution color from yellow to orange. Additionally, we could excite either the monomer species or the aggregates of the probe by choosing the proper excitation wavelength. Upon exciting at 390 nm, the compound exhibited a broad fluorescence spectrum with maxima at 450 nm, presumably due to twisted state charge transfer. On the contrary, the aggregated species (λex = 465 nm) displayed a comparatively weaker fluorescence band centered at 565 nm. Interestingly, the fluorescence intensity at the 450 nm band experience fluorescence quenching in the presence of Hg2+ ion, while the aggregate emission band remained unaffected. Finally, the present system was utilized for detection of mercury ions in natural water samples.
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Affiliation(s)
- Animesh Pal
- Department of Chemistry, BITS-Pilani Hyderabad Campus, Hyderabad, 500078, India
| | - Nilanjan Dey
- Department of Chemistry, BITS-Pilani Hyderabad Campus, Hyderabad, 500078, India.
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7
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Mondal S, Karar M, Dey N. Dye-surfactant co-assembly as the chromogenic indicator for nanomolar level detection of Cu(I) ions via a color-changing response. J Mater Chem B 2023; 11:4111-4120. [PMID: 37165919 DOI: 10.1039/d3tb00115f] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Polyaromatic amphiphilic probes have been developed, that can be involved in chromogenic detection of Cu+ ions in anionic micelles. A rapid change in solution color from yellow to orange was observed in the presence of Cu+ ions. The detection limit was found at the nanomolar range. To the best of our knowledge, this is the first report of the visible detection of Cu+ ions in aqueous medium using anionic micelles as a stabilizing agent. Interestingly, the compound can also detect Cu+ ions, generated in situ from physiological redox processes. The mechanistic investigation suggests that the probe molecule forms a diamagnetic tetrahedral complex with the Cu+ ion, coordinating through a pyridyl ketone unit. In addition, we have also followed the interaction with Cu+ on a bilayer surface made of anionic phospholipids. Further, a Cu2+-probe ensemble is used to assay the reducing ability of different biogenic thiols depending upon the pKa of their sulfhydryl (-SH) group. This allows us to determine the amount of reducing thiols present in human urine samples. Considering the high sensitivity of the present system, we screened water samples collected from different natural sources for Cu+ ions. Nearly 100% recovery values with considerably small relative standard deviations (<5%) indicate that the present system is indeed suitable for real-life sample analysis. Finally, low-cost, reusable, chemically-modified paper strips have been developed for rapid, on-location detection of Cu+ ions.
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Affiliation(s)
- Sourav Mondal
- Department of Chemistry, BITS-Pilani Hyderabad Campus, Hyderabad-500078, India.
| | - Monaj Karar
- Department of Science and Humanities, MLR Institute of Technology, Hyderabad, Telangana-500043, India
| | - Nilanjan Dey
- Department of Chemistry, BITS-Pilani Hyderabad Campus, Hyderabad-500078, India.
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Duan L, Fan J, Tian D, Kang Y, Wu Q, Zhang X, Li P, Wang L, Shen G, Qiu P. Effect of Heteroatoms on the Binding Properties of Preorganized Claw-Type Phenanthroline-based Ligands towards Lanthanide Cations. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2023.131019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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9
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Gao XD, Hu Y, Wang WF, Zhao XB, Du XZ, Shi YP. Rapid and Selective 19F NMR-Based Sensors for Fingerprint Identification of Ribose. Anal Chem 2022; 94:11564-11572. [PMID: 35968680 DOI: 10.1021/acs.analchem.2c01832] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Ribose plays an important role in the process of life. Excessive ribose in the human cerebrospinal fluid or urine can be used as an early diagnostic marker of leukoencephalopathy. Fluorinated phenylboronic acid combined with 19F NMR spectroscopy was a powerful method for molecular recognition. However, phenylboronic acid-based sensors for selective detection of ribose are rarely reported in the literature. In this study, the rapid and highly selective recognition of ribose was studied by 19F NMR and 2-fluorophenylboric acid. It was found that 2-fluoro-phenylboric acid was an appropriate 19F NMR-based sensor molecule for the determination of ribose under physiological conditions with high selectivity and robust anti-interference ability. When 2-fluorophenylboric acid was used for the detection of ribose in human urine without any sample pretreatment, a limit of detection of 78 μM was obtained at room temperature under given 19F NMR experimental conditions (400 MHz, 512 scans, ca. 12 min), which can well meet the needs of practical application.
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Affiliation(s)
- Xu-Dong Gao
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Lanzhou 730000, People's Republic of China.,College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, People's Republic of China
| | - Yue Hu
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Lanzhou 730000, People's Republic of China
| | - Wei-Feng Wang
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Lanzhou 730000, People's Republic of China
| | - Xiao-Bo Zhao
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Lanzhou 730000, People's Republic of China
| | - Xin-Zhen Du
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, People's Republic of China
| | - Yan-Ping Shi
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Lanzhou 730000, People's Republic of China
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10
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Fernandes RS, Dey N. Acyl hydrazone-based reversible optical switch for reporting of cyanide ion in industrial wastewater samples. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132968] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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11
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Fernandes RS, Dey N. Synthetic Supramolecular Host for D‐(‐)‐Ribose: Ratiometric Fluorescence Response via Multivalent Lectin‐Carbohydrate Interactions. Chembiochem 2022; 23:e202200044. [DOI: 10.1002/cbic.202200044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 03/22/2022] [Indexed: 11/12/2022]
Affiliation(s)
- Rikitha S. Fernandes
- Birla Institute of Technology & Science Pilani - Hyderabad Campus Chemistry department INDIA
| | - Nilanjan Dey
- Birla Institute of Technology & Science Pilani - Hyderabad Campus Chemistry department Shameerpet 500078 Hyderabad INDIA
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12
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Hoffmann C, Jourdain M, Grandjean A, Titz A, Jung G. β-Boronic Acid-Substituted Bodipy Dyes for Fluorescence Anisotropy Analysis of Carbohydrate Binding. Anal Chem 2022; 94:6112-6119. [DOI: 10.1021/acs.analchem.1c04654] [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]
Affiliation(s)
- Caroline Hoffmann
- Biophysical Chemistry, Saarland University, Campus B2 2, 66123 Saarbrücken, Germany
- Department of Chemistry, Saarland University, 66123 Saarbrücken, Germany
| | - Matthias Jourdain
- Biophysical Chemistry, Saarland University, Campus B2 2, 66123 Saarbrücken, Germany
- Department of Chemistry, Saarland University, 66123 Saarbrücken, Germany
| | - Alexander Grandjean
- Biophysical Chemistry, Saarland University, Campus B2 2, 66123 Saarbrücken, Germany
- Department of Chemistry, Saarland University, 66123 Saarbrücken, Germany
| | - Alexander Titz
- Helmholtz Institute for Pharmaceutical Research Saarland, Helmholtz Centre for Infection Research, 66123 Saarbrücken, Germany
- Department of Chemistry, Saarland University, 66123 Saarbrücken, Germany
- Deutsches Zentrum für Infektionsforschung (DZIF), Standort Hannover-Braunschweig, 38124 Braunschweig, Germany
| | - Gregor Jung
- Biophysical Chemistry, Saarland University, Campus B2 2, 66123 Saarbrücken, Germany
- Department of Chemistry, Saarland University, 66123 Saarbrücken, Germany
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13
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Dey N. A pyrene-based ratiometric probe for nanomolar level detection of glyphosate in food and environmental samples and its application for live-cell imaging. NEW J CHEM 2022. [DOI: 10.1039/d2nj00448h] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An in situ formed copper(ii)-complex is involved in analyzing glyphosate in real-life samples, such as crops, soil, water and biological fluids.
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Affiliation(s)
- Nilanjan Dey
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Secunderabad, Telangana 500078, India
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14
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Dey N. A simple strategy for the visual detection and discrimination of Hg 2+ and CH 3Hg + species using fluorescent nanoaggregates. Dalton Trans 2021; 50:12563-12569. [PMID: 34137406 DOI: 10.1039/d1dt01455b] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Fluorescent nanoaggregates (FNAs) based on phenanthroline-based amphiphiles show changes in solution color from colorless to yellow upon addition of both Hg2+ (LOD ∼4 ppb) and CH3Hg+ (LOD ∼18 ppb). However, the extent of fluorescence quenching is more prominent with Hg2+ (∼12 fold) than with CH3Hg+ (∼4 fold). Also, unlike Hg2+, the interaction of CH3Hg+ needs more time, ∼10 min at room temperature. Experimental evidence indicates that both mercury species coordinate with the phenanthroline unit and facilitate the charge transfer interaction while destabilizing the nanoassembly. The lower charge density on CH3Hg+ along with its large size compared to Hg2+ may be the reason for such observations. Interestingly, FNAs show a selective response towards CH3Hg+ when pre-treated with EDTA. Further, analysis of heavy metal pollutants in drinking water and biological samples was performed. High recovery values ranging from 96% to 103.0% were estimated along with relatively small standard deviations (<3%). Low-cost, reusable test strips were designed for rapid, on-site detection of mercury species. Further, the in situ formed metal complexes are allowed to interact with thiol-containing amino acids. As expected, CH3Hg+, being less thiophillic, endures less interaction with cysteine. Mechanistic investigations indicate that thiolated amino acids can bind with the metal ion center and form a tertiary complex (cooperative interaction).
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Affiliation(s)
- Nilanjan Dey
- Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan. .,Department of Chemistry, BITS-Pilani Hyderabad Campus, Shameerpet, Hyderabad-500078, Telangana, India
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Dey N, Biswakarma D, Bajpai A, Moorthy JN, Bhattacharya S. Modulation of Excited-State Proton-Transfer Dynamics inside the Nanocavity of Microheterogeneous Systems: Microenvironment-Sensitive Förster Energy Transfer to Riboflavin. Chemphyschem 2019; 20:881-889. [PMID: 30548519 DOI: 10.1002/cphc.201801085] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 08/15/2018] [Indexed: 12/11/2022]
Abstract
The excited-state proton-transfer efficiency of a tetraarylpyrene derivative, 1,3,6,8-tetrakis(4-hydroxy-2,6-dimethylphenyl)pyrene (TDMPP), was investigated thoroughly in the presence of various surfactant assemblies, such as micelles and vesicles. The confined microheterogeneous environments can significantly retard the extent of the excited-state proton-transfer process, resulting in a distinguishable optical signal compared to that in the bulk medium. Physical characteristics of the surfactant assemblies, such as order, interfacial hydration, and surface charge, influence the proton transfer process and allow multiparametric sensing. A higher degree of interfacial hydration facilitates the proton-transfer process, while the positively charged head groups of the surfactants specifically stabilize the anionic form of the probe (TDMPP-O*). Furthermore, Forster energy transfer from the probe to riboflavin was studied in a phospholipid membrane, wherein the relative ratio of the neutral versus anionic forms (TDMPP-OH/TDMPP-O*) was found to influence the extent of energy transfer. Overall, we demonstrate how an ultrafast photophysical process, that is, the excited-state proton transfer, can be influenced by the microenvironment.
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Affiliation(s)
- Nilanjan Dey
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, 560012, India
| | - Dipen Biswakarma
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, 560012, India
| | - Alankriti Bajpai
- Department of Chemistry, Indian Institute of Technology Kalyanpur, Kanpur, Uttar Pradesh, 208016
| | - Jarugu Narasimha Moorthy
- Department of Chemistry, Indian Institute of Technology Kalyanpur, Kanpur, Uttar Pradesh, 208016
| | - Santanu Bhattacharya
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, 560012, India.,Current Address: Director's Research Unit, Indian Association for Cultivation of Science, Kolkata, 700032, India
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16
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Dey N, Kulhánek J, Bureš F, Bhattacharya S. Simultaneous Detection of Cu 2+ and Hg 2+ via Two Mutually Independent Sensing Pathways of Biimidazole Push-Pull Dye. J Org Chem 2019; 84:1787-1796. [PMID: 30596244 DOI: 10.1021/acs.joc.8b02591] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An easy-to-synthesize, biimidazole push-pull dye has been designed, comprising two mutually independent analyte binding sites. It has been found that Hg2+ coordinates with the compound via thiophene residue and inhibits the charge-transfer (CT) process, which transforms the yellow-colored solution colorless. On the other hand, an unusually large bathochromic shift is observed in CT band upon addition of Cu2+, accompanied by a change in the color from yellow to red. A rather surprising observation is made from mechanistic studies, where it indicates that Cu2+ catalyzes the formation of 6-imino-5,6-dihydropyrrolo[3,4- d]imidazole-4(3 H)-one (IPIMO) derivative. This strongly affects the charge-transfer state of the compound as well as its polarizability. Most importantly, this is the first report where IPIMO formation reaction has been exploited for sensing of a metal ion. Further, the system was employed for screening of both of these metal ions in wastewater samples. Recovery values ranging from 93.3 to 105.0% confirm the suitability of the present method for estimating trace level of metal ions in complex matrices. In addition, inexpensive on-site detection systems were developed using paper strips.
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Affiliation(s)
- Nilanjan Dey
- Department of Organic Chemistry , Indian Institute of Science , Bangalore 560012 , India
| | - Jiří Kulhánek
- Institute of Organic Chemistry and Technology, Faculty of Chemical Technology , University of Pardubice , Pardubice CZ-53210 , Czech Republic
| | - Filip Bureš
- Institute of Organic Chemistry and Technology, Faculty of Chemical Technology , University of Pardubice , Pardubice CZ-53210 , Czech Republic
| | - Santanu Bhattacharya
- Department of Organic Chemistry , Indian Institute of Science , Bangalore 560012 , India.,Director's Research Unit , Indian Association for Cultivation of Science , Kolkata 700032 , India
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Dey N, Ali A, Kamra M, Bhattacharya S. Simultaneous sensing of ferritin and apoferritin proteins using an iron-responsive dye and evaluation of physiological parameters associated with serum iron estimation. J Mater Chem B 2019; 7:986-993. [PMID: 32255103 DOI: 10.1039/c8tb01523f] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
An iron-responsive optical probe has been developed for simultaneous sensing of both ferritin and apoferritin proteins at pH 7.4 in water. The compound showed an exclusive response (turn-off signal) towards ferritin among a wide range of proteins even at nanomolar concentration. In contrast, apoferritin dissociates the preformed iron complex and revives the green colored fluorescence of the native probe (turn-on signal). Subsequently, various parameters associated with the serum iron level are evaluated, which are beneficial for clinical diagnosis of many iron-related diseases, including anemia. Estimation of iron was achieved in a wide range of edible plant materials as well as pharmaceutical formulations. Subsequently, different kinds of natural water samples were screened for quantification of soluble iron contents. In addition to traditional spectroscopic tools, dye-coated paper strips were developed as an alternative strategy for onsite 'instrument-free' detection of iron. Highly specific bioimaging of Fe3+ was achieved in cervical cancer cells (HeLa).
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Affiliation(s)
- Nilanjan Dey
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India
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Moitra P. A combinatorial approach of structure-based virtual screening and molecular dynamics simulation towards the discovery of a highly selective inhibitor for VP9 coat protein of Banna virus. Bioorg Chem 2019; 86:15-27. [PMID: 30684859 DOI: 10.1016/j.bioorg.2019.01.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Revised: 01/06/2019] [Accepted: 01/09/2019] [Indexed: 12/16/2022]
Abstract
Structure based virtual screening of two libraries containing 27,628 numbers of antiviral compounds was used to discover a few of the potent inhibitor molecules against Banna virus (BAV). Cross-docking studies with many common interfering proteins provided five of the highly selective inhibitor for BAV. Analyses of the leading molecules with ADME-Tox filtering tool and atomistic molecular dynamics simulation studies finally discovered a benzoxazolone derivative as one of the most promising molecules towards the highly selective inhibition of BAV. The theoretical calculations are also supported by the experimental evidences where the interactions between the hit ligand and a model peptide sequence, mimicking the VP9 protein of BAV, were studied. Overall the development of a personalized therapeutic towards the highly selective inhibition of BAV is discussed herein for the first time in literature.
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Affiliation(s)
- Parikshit Moitra
- Technical Research Centre, Indian Association for the Cultivation of Science, 2A & 2B Raja SC Mullick Road, Jadavpur, Kolkata 700032, West Bengal, India.
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19
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Gulyani A, Dey N, Bhattacharya S. Highly Responsive Fluorescent Assemblies Allow for Unique, Multiparametric Sensing of the Phospholipid Membrane Environment. Chemistry 2018; 25:1507-1514. [DOI: 10.1002/chem.201803627] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2018] [Indexed: 01/24/2023]
Affiliation(s)
- Akash Gulyani
- Department of Organic Chemistry; Indian Institute of Science; Bangalore 560012 India
- Institute for Stem Cell Biology & Regenerative Medicine; GKVK Post, Bangalore 560065 India
| | - Nilanjan Dey
- Department of Organic Chemistry; Indian Institute of Science; Bangalore 560012 India
- Institute for Stem Cell Biology & Regenerative Medicine; GKVK Post, Bangalore 560065 India
| | - Santanu Bhattacharya
- Department of Organic Chemistry; Indian Institute of Science; Bangalore 560012 India
- Present address: Indian Association for Cultivation of Science; Kolkata 700032 India
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20
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Fang G, Wang H, Bian Z, Sun J, Liu A, Fang H, Liu B, Yao Q, Wu Z. Recent development of boronic acid-based fluorescent sensors. RSC Adv 2018; 8:29400-29427. [PMID: 35548017 PMCID: PMC9084483 DOI: 10.1039/c8ra04503h] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2018] [Accepted: 08/08/2018] [Indexed: 11/21/2022] Open
Abstract
As Lewis acids, boronic acids can bind with 1,2- or 1,3-diols in aqueous solution reversibly and covalently to form five or six cyclic esters, thus resulting in significant fluorescence changes. Based on this phenomenon, boronic acid compounds have been well developed as sensors to recognize carbohydrates or other substances. Several reviews in this area have been reported before, however, novel boronic acid-based fluorescent sensors have emerged in large numbers in recent years. This paper reviews new boron-based sensors from the last five years that can detect carbohydrates such as glucose, ribose and sialyl Lewis A/X, and other substances including catecholamines, reactive oxygen species, and ionic compounds. And emerging electrochemically related fluorescent sensors and functionalized boronic acid as new materials including nanoparticles, smart polymer gels, and quantum dots were also involved. By summarizing and discussing these newly developed sensors, we expect new inspiration in the design of boronic acid-based fluorescent sensors.
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Affiliation(s)
- Guiqian Fang
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences Jinan 250200 Shandong China
- Institute of Materia Medica, Shandong Academy of Medical Sciences Jinan 250062 Shandong China
- Key Laboratory for Biotech-Drugs Ministry of Health Jinan 250062 Shandong China
- Key Laboratory for Rare & Uncommon Diseases of Shandong Province Jinan 250062 Shandong China
| | - Hao Wang
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences Jinan 250200 Shandong China
- Institute of Materia Medica, Shandong Academy of Medical Sciences Jinan 250062 Shandong China
- Key Laboratory for Biotech-Drugs Ministry of Health Jinan 250062 Shandong China
- Key Laboratory for Rare & Uncommon Diseases of Shandong Province Jinan 250062 Shandong China
| | - Zhancun Bian
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences Jinan 250200 Shandong China
- Institute of Materia Medica, Shandong Academy of Medical Sciences Jinan 250062 Shandong China
- Key Laboratory for Biotech-Drugs Ministry of Health Jinan 250062 Shandong China
- Key Laboratory for Rare & Uncommon Diseases of Shandong Province Jinan 250062 Shandong China
| | - Jie Sun
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences Jinan 250200 Shandong China
- Institute of Materia Medica, Shandong Academy of Medical Sciences Jinan 250062 Shandong China
- Key Laboratory for Biotech-Drugs Ministry of Health Jinan 250062 Shandong China
- Key Laboratory for Rare & Uncommon Diseases of Shandong Province Jinan 250062 Shandong China
| | - Aiqin Liu
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences Jinan 250200 Shandong China
- Institute of Materia Medica, Shandong Academy of Medical Sciences Jinan 250062 Shandong China
- Key Laboratory for Biotech-Drugs Ministry of Health Jinan 250062 Shandong China
- Key Laboratory for Rare & Uncommon Diseases of Shandong Province Jinan 250062 Shandong China
| | - Hao Fang
- Department of Medicinal Chemistry, School of Pharmaceutical Sciences, Shandong University Jinan Shandong 250012 China
| | - Bo Liu
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences Jinan 250200 Shandong China
- Institute of Materia Medica, Shandong Academy of Medical Sciences Jinan 250062 Shandong China
- Key Laboratory for Biotech-Drugs Ministry of Health Jinan 250062 Shandong China
- Key Laboratory for Rare & Uncommon Diseases of Shandong Province Jinan 250062 Shandong China
| | - Qingqiang Yao
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences Jinan 250200 Shandong China
- Institute of Materia Medica, Shandong Academy of Medical Sciences Jinan 250062 Shandong China
- Key Laboratory for Biotech-Drugs Ministry of Health Jinan 250062 Shandong China
- Key Laboratory for Rare & Uncommon Diseases of Shandong Province Jinan 250062 Shandong China
| | - Zhongyu Wu
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences Jinan 250200 Shandong China
- Institute of Materia Medica, Shandong Academy of Medical Sciences Jinan 250062 Shandong China
- Key Laboratory for Biotech-Drugs Ministry of Health Jinan 250062 Shandong China
- Key Laboratory for Rare & Uncommon Diseases of Shandong Province Jinan 250062 Shandong China
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21
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Dey N, Kumari N, Bhagat D, Bhattacharya S. Smart optical probe for ‘equipment-free’ detection of oxalate in biological fluids and plant-derived food items. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.06.052] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Dey N, Jha S, Bhattacharya S. Visual detection of a nerve agent simulant using chemically modified paper strips and dye-assembled inorganic nanocomposite. Analyst 2018; 143:528-535. [PMID: 29236113 DOI: 10.1039/c7an01058c] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Chromogenic probe with oxidized bis-indolyl scaffold has been synthesized for the detection of a nerve gas mimicking agent, DCNP (diethyl cyanophosphonate) at pH 8.0 in water. The mechanism of interaction was proposed as the release of cyanide ion through the indole group mediating the hydrolysis of phosphorous-hetero atom bond and, thereafter, the Michael addition of the liberated CN- ion to the electron deficient C[double bond, length as m-dash]C bond of the bis-indolyl moiety. The reaction featured a remarkable change in color from red to colorless at ambient condition. Then, low-cost and portable paper strips were designed for a rapid and on-site vapor phase detection of DCNP without involving any sophisticated instrument or skilled personnel. Finally, a dye assembled inorganic nanocomposite material was devised to achieve a more sensitive 'turn-on' detection of DCNP in water.
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Affiliation(s)
- Nilanjan Dey
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India.
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Dey N, Maji B, Bhattacharya S. Motion-Induced Changes in Emission as an Effective Strategy for the Ratiometric Probing of Human Serum Albumin and Trypsin in Biological Fluids. Chem Asian J 2018; 13:664-671. [DOI: 10.1002/asia.201701795] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Revised: 01/23/2018] [Indexed: 11/09/2022]
Affiliation(s)
- Nilanjan Dey
- Department of Organic Chemistry; Indian Institute of Science; Bangalore 560012 India
| | - Basudeb Maji
- Department of Organic Chemistry; Indian Institute of Science; Bangalore 560012 India
| | - Santanu Bhattacharya
- Department of Organic Chemistry; Indian Institute of Science; Bangalore 560012 India
- Current Address: Indian Association for the Cultivation of Science; Kolkata 700032 India
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24
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Gulyani A, Dey N, Bhattacharya S. Tunable Emission from Fluorescent Organic Nanoparticles in Water: Insight into the Nature of Self-Assembly and Photoswitching. Chemistry 2018; 24:2643-2652. [DOI: 10.1002/chem.201704607] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Indexed: 12/13/2022]
Affiliation(s)
- Akash Gulyani
- Department of Organic Chemistry; Indian Institute of Science; Bangalore 560012 India
- Institute for Stem Cell Biology and Regenerative Medicine; GKVK post; Bangalore 560065 India
| | - Nilanjan Dey
- Department of Organic Chemistry; Indian Institute of Science; Bangalore 560012 India
| | - Santanu Bhattacharya
- Department of Organic Chemistry; Indian Institute of Science; Bangalore 560012 India
- Present address: Director's Research Unit; Indian Association for Cultivation of Science; Kolkata 700032 India
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25
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Dey N, Bhattacharya S. Trace level Al3+ detection in aqueous media utilizing luminescent ensembles comprising pyrene laced dynamic surfactant assembly. Dalton Trans 2018; 47:2352-2359. [DOI: 10.1039/c7dt03401f] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Easily synthesizable amphiphilic probes have been designed for the detection of Al3+ exclusively at mesoscopic interfaces.
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Affiliation(s)
- Nilanjan Dey
- Department of Organic Chemistry
- Indian Institute of Science
- Bangalore 560012
- India
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26
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Dey N, Maji B, Bhattacharya S. A Versatile Probe for Caffeine Detection in Real-Life Samples via Excitation-Triggered Alteration in the Sensing Behavior of Fluorescent Organic Nanoaggregates. Anal Chem 2017; 90:821-829. [DOI: 10.1021/acs.analchem.7b03520] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Nilanjan Dey
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Basudeb Maji
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Santanu Bhattacharya
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India
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