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Chowdhury T, Chakraborty T, Ghosh A, Das AK, Das D. ZnAl 2O 4 Nanomaterial as a Naked-Eye Arsenate Sensor: A Combined Experimental and Computational Mechanistic Approach. ACS APPLIED MATERIALS & INTERFACES 2022; 14:32457-32473. [PMID: 35797477 DOI: 10.1021/acsami.2c04875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Raising public awareness over the emerging health risk due to intake of arsenic-contaminated potable water is a matter of great concern. Exploration of cost-effective, self-testing kits is a substantial way to reach out to the masses and detect the presence of arsenate in water. With this agenda, a photoluminescent Mannich base Zn(II) complex (ZnMC = [Zn2(ML)2]·(ClO4)2·(H2O); HML = Mannich base ligand) has been synthesized, and its dinuclearity was verified with single-crystal X-ray diffraction structural analysis. Among a range of anions, ZnMC was found to detect arsenate selectively by showing a turn-off emission with a color change from bright green to dark under UV light. The real-life applicability of the ZnMC probe is somewhat restricted to only sensing of arsenate, but not its removal owing to the fact of its homogeneity. Considering the efficacy of ZnMC as well as a need for its easy removal from water, slight modification has been done with chloride ions in the form of ZnMC″ (=[Zn2(ML)2(Cl)2]), and finally, an interface between homogeneous and heterogeneous solid support has been explored with a strategic fabrication of ZnMC″ grafted ZnAl2O4, named as ZAZ nanomaterial. This not only imparts successful segregation of arsenate from drinking water but also provides naked-eye detection under ambient light as well as UV light. Thermodynamic parameters associated with the binding of arsenate to ZnMC and ZAZ have been evaluated through isothermal calorimetric (ITC) measurements. Steady-state and time-resolved fluorescence titration study, absorption titration study, scanning electron microscopy (SEM), transmission electron microscopy (TEM), and computational calculations have been performed to get deep insights into the sensing properties. Proper justification of the sensing mechanism is the highlight of this work. ZAZ nanomaterial has been exploited to produce a self-test paper kit for arsenate detection with a limit of 9.86 ppb, which potentially enables applications in environmental monitoring.
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Affiliation(s)
- Tania Chowdhury
- Department of Chemistry, University College of Science, University of Calcutta, 92 A. P. C. Road, Kolkata 700009, India
| | - Tonmoy Chakraborty
- Department of Chemistry, University College of Science, University of Calcutta, 92 A. P. C. Road, Kolkata 700009, India
- School of Mathematical & Computational Sciences, Indian Association for the Cultivation of Science, 2A & 2B, Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Avik Ghosh
- School of Mathematical & Computational Sciences, Indian Association for the Cultivation of Science, 2A & 2B, Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Abhijit K Das
- School of Mathematical & Computational Sciences, Indian Association for the Cultivation of Science, 2A & 2B, Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Debasis Das
- Department of Chemistry, University College of Science, University of Calcutta, 92 A. P. C. Road, Kolkata 700009, India
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Synthesis, Crystal Structure of Tetra-Nuclear Macrocyclic Zn(II) Complex and Its Application as Catalyst for Oxidation of Benzyl Alcohol. BULLETIN OF CHEMICAL REACTION ENGINEERING & CATALYSIS 2021. [DOI: 10.9767/bcrec.16.4.10978.839-846] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A new six coordinated tetra-nuclear macrocyclic Zn(II) complex, ZnL4(Phen)2 (1) (HL= 3-bromo-2-hydroxybenzaldehyde-pyridine-2-carbohydrazone, Phen = 1,10-phenanthroline) has been synthesized by the self-assembly of 3-bromo-2-hydroxybenzaldehyde-pyridine-2-carbohydrazone, Zn(CH3COO)2•2H2O, NaOH and 1,10-phenanthroline in water/ethanol (v:v = 1:3) solution. Complex 1 was characterized by elemental analysis, infra red (IR), and single-crystal X-ray diffraction (XRD) analysis. The results show that Zn1 and Zn1b ions are six-coordinated with a distorted octahedral geometric configuration by four O atoms of two different L ligands and two N atoms of two different L ligands, Zn1a and Zn1c ions are also six-coordinated with a distorted octahedral geometric configuration by two N atoms of two different L ligands, two N atoms of Phen ligands and two O atoms of two different L ligands. Complex (1) forms 3D network structure by the - interaction. The selective oxidation reactions of benzyl alcohols catalyzed by complex (1) was investigated. The highest benzyl alcohol conversion and benzaldehyde selectivity were obtained at 100 °C for 4 h under 5 bar of O2. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
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Chakraborty T, Mukherjee S, Parveen R, Chandra A, Samanta D, Das D. A combined experimental and theoretical rationalization of an unusual zinc(ii)-mediated conversion of 18-membered Schiff-base macrocycles to 18-membered imine–amine macrocycles with imidazolidine side rings: an investigation of their bio-relevant catalytic activities. NEW J CHEM 2021. [DOI: 10.1039/d0nj05635a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Macrocyclic Zn(ii)-based Schiff base complexes exhibit significant phosphatase-like activity as well as high potential anticancer activity against breast cancer cells.
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Affiliation(s)
| | - Somali Mukherjee
- Department of Chemistry
- University of Calcutta
- Kolkata 700009
- India
| | - Rumana Parveen
- Department of Chemistry
- University of Calcutta
- Kolkata 700009
- India
| | - Arpita Chandra
- In Vitro Carcinogenesis and Cellular Chemotherapy
- Chittaranjan National Cancer Institute
- Kolkata-700026
- India
| | - Debabrata Samanta
- Department of Chemistry
- Dukhulal Nibaran Chandra College
- Aurangabad
- India
| | - Debasis Das
- Department of Chemistry
- University of Calcutta
- Kolkata 700009
- India
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Tay HM, Beer P. Optical sensing of anions by macrocyclic and interlocked hosts. Org Biomol Chem 2021; 19:4652-4677. [DOI: 10.1039/d1ob00601k] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
This review summarises recent developments in the use of macrocyclic and mechanically-interlocked host molecules as optical sensors for anions.
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Affiliation(s)
- Hui Min Tay
- Chemistry Research Laboratory
- Department of Chemistry
- University of Oxford
- Oxford
- UK
| | - Paul Beer
- Chemistry Research Laboratory
- Department of Chemistry
- University of Oxford
- Oxford
- UK
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Sarkar A, Chakraborty A, Chakraborty T, Purkait S, Samanta D, Maity S, Das D. A Chemodosimetric Approach for Fluorimetric Detection of Hg 2+ Ions by Trinuclear Zn(II)/Cd(II) Schiff Base Complex: First Case of Intermediate Trapping in a Chemodosimetric Approach. Inorg Chem 2020; 59:9014-9028. [PMID: 32573221 DOI: 10.1021/acs.inorgchem.0c00857] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The present work discloses the application of two fluorescent zinc and cadmium complexes (1 and 2) for sensing of Hg(II) ions through a chemodosimetric approach. The ligand under consideration in this work is a N2O donor Schiff base ligand (E)-4-bromo-2-(((2-morpholinoethyl)imino)methyl)phenol (HL), which has been harnessed to generate complexes [Zn3L2(OAc)4] (1) and [Cd3L2(OAc)4] (2). X-ray single crystal diffraction studies unveil the trinuclear skeleton of complexes 1 and 2. Both complexes have been found to be highly fluorescent in nature. However, the quantum efficiency of Zn(II) complex (1) dominates over the Cd(II) analogue (2). The absorption and emission spectroscopic properties of the complexes have been investigated by density functional theory. Complexes 1 and 2 can detect Hg2+ ions selectively by fluorescence quenching, and it is noteworthy to mention that the mechanism of sensing is unique as well as interesting. In the presence of Hg2+ ions, complexes 1 and 2 are transformed to mononuclear mercuric intermediate complex (3) and finally to a trinuclear mercuric complex (4) by hydrolysis. We have successfully trapped the intermediate complex 3, and we characterized it with the aid of X-ray crystallography. Transformation of complexes 1 and 2 to intermediate complex 3 and finally to 4 has been established by UV-vis spectroscopy, fluorescence spectroscopy, ESI-MS spectroscopy, 1H NMR spectroscopy, and X-ray crystallography. The spontaneity of the above conversion is well supported by thermodynamic aspects as reflected from density functional theoretical calculations.
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Affiliation(s)
- Abani Sarkar
- Department of Chemistry, University College of Science, University of Calcutta, 92 A. P. C. Road, Kolkata 700009, India
| | - Aratrika Chakraborty
- Department of Chemistry, University College of Science, University of Calcutta, 92 A. P. C. Road, Kolkata 700009, India
| | - Tonmoy Chakraborty
- Department of Chemistry, University College of Science, University of Calcutta, 92 A. P. C. Road, Kolkata 700009, India
| | - Suranjana Purkait
- Department of Chemistry, University College of Science, University of Calcutta, 92 A. P. C. Road, Kolkata 700009, India
| | - Debabrata Samanta
- Department of Chemistry, Indian Institute of Technology, Kanpur, Kanpur 208016, India
| | - Suvendu Maity
- Department of Chemistry, R. K. Mission Residential College, Narendrapur, Kolkata 700 103, India
| | - Debasis Das
- Department of Chemistry, University College of Science, University of Calcutta, 92 A. P. C. Road, Kolkata 700009, India
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Chowdhury T, Bera K, Samanta D, Dolui S, Maity S, Maiti NC, Ghosh PK, Das D. Unveiling the binding interaction of zinc (II) complexes of homologous Schiff‐base ligands on the surface of BSA protein: A combined experimental and theoretical approach. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5556] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Tania Chowdhury
- Department of ChemistryUniversity of Calcutta 92, A. P. C. Road Kolkata 700009 India
| | - Kaushik Bera
- Structural Biology and Bioinformatics DivisionCSIR‐Indian Institute of Chemical Biology 4, Raja S.C. Mullick Road Kolkata 700032 India
| | - Debabrata Samanta
- Department of ChemistryIndian Institute of Kanpur Uttar Pradesh 208016 India
| | - Sandip Dolui
- Structural Biology and Bioinformatics DivisionCSIR‐Indian Institute of Chemical Biology 4, Raja S.C. Mullick Road Kolkata 700032 India
| | - Suvendu Maity
- Department of ChemistryR. K. Mission Residential College Narendrapur, Kolkata 700103 W.B. India
| | - Nakul C. Maiti
- Structural Biology and Bioinformatics DivisionCSIR‐Indian Institute of Chemical Biology 4, Raja S.C. Mullick Road Kolkata 700032 India
| | - Prasanta Kumar Ghosh
- Department of ChemistryR. K. Mission Residential College Narendrapur, Kolkata 700103 W.B. India
| | - Debasis Das
- Department of ChemistryUniversity of Calcutta 92, A. P. C. Road Kolkata 700009 India
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Anbu Durai W, Ramu A. Hydrazone Based Dual - Responsive Colorimetric and Ratiometric Chemosensor for the Detection of Cu 2+/F - Ions: DNA Tracking, Practical Performance in Environmental Samples and Tooth Paste. J Fluoresc 2020; 30:275-289. [PMID: 31997143 DOI: 10.1007/s10895-020-02488-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 01/13/2020] [Indexed: 12/15/2022]
Abstract
Colorimetric sensors have attracted wide scope of attentions due to its fascinating advantages, like handy, equipment-free and naked eye detections. In this investigation, a new and novel hydrazone based dual-responsive ratiometric/colorimetric chemosensor have been developed for highly selective and sensitive detection of Cu2+ and F- ions in dimethyl sulfoxide (DMSO) solvent. The probe showed highly selective sensing towards Cu2+ and F- ions by exhibiting a color change from pale yellow to yellowish green and pale yellow to yellowish brown respectively., in DMSO without any interference of other ions at same concentration. These experimental results have also substantiated by the NMR, HR-MS, UV-Vis spectroscopic, cyclic voltammetry, differential pulse voltammetry techniques and DFT calculations. The detection limits are found to be 5.8 μM for Cu2+ and 0.025 μM for F- ions which is far below to the values recommended by WHO. The stoichiometric ratios between NAPCBH and Cu2+/ F- ions were confirmed from the Job's plots and 1H NMR titration experiments which are found to be 2:1 and 1:1 respectively. The tracking ability of the DNA with NAPCBH-Cu2+ was studied by UV-Vis titration and Cyclic voltammetry measurements. It shows efficient affinity towards DNA with NAPCBH-Cu2+. The probe can also quantitatively determine the Copper and fluoride ions present in environmental samples & toothpaste. The NAPCBH was promptly recovered by utilizing very low concentration of HCl, showing that was found feasible and re-usable sensor for the convenient detection of Cu2+ and F- ions. Graphical Abstract.
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Affiliation(s)
- Willsingh Anbu Durai
- Department of Inorganic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai, Tamil Nadu, 625 021, India
| | - Andy Ramu
- Department of Inorganic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai, Tamil Nadu, 625 021, India.
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