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Yoneda N, Iyama H, Nagata T, Katahira M, Ishii Y, Tada K, Matsumoto K, Hagiwara R. Fluoride Ion in Alcohols: Isopropanol vs Hexafluoroisopropanol. J Phys Chem Lett 2024; 15:1677-1685. [PMID: 38315662 DOI: 10.1021/acs.jpclett.3c03619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
The utility of alcohol as a hydrogen bonding donor is considered a providential avenue for moderating the high basicity and reactivity of the fluoride ion, typically used with large cations. However, the practicality of alcohol-fluoride systems in reactions is hampered by the limited understanding of the pertinent interactions between the OH group and F-. Therefore, this study comparatively investigates the thermal, structural, and physical properties of the CsF-2-propanol and CsF-1,1,1,3,3,3-hexafluoro-2-propanol systems to explicate the effects of the fluoroalkyl group on the interaction of alcohols and F-. The two systems exhibit vastly different phase diagrams despite the similar saturated concentrations. A combination of spectroscopic analyses, alcohol activity coefficient measurements, and theoretical calculations reveal the fluorinated alcohol system harbors the stronger OH···F- interactions between the two systems. The diffusion coefficient and ionic conductivity measurements attribute the present results to disparate states of ion association in the two systems.
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Affiliation(s)
- Nozomi Yoneda
- Graduate School of Energy Science, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Haruka Iyama
- Graduate School of Energy Science, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Takashi Nagata
- Institute of Advanced Energy, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
| | - Masato Katahira
- Institute of Advanced Energy, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
| | - Yoshiki Ishii
- School of Frontier Engineering, Kitasato University, 1-15-1 Kitazato, Minami-ku, Sagamihara, Kanagawa 252-0373, Japan
| | - Kohei Tada
- Research Institute of Electrochemical Energy, National Institute of Advanced Industrial Science and Technology (AIST), Ikeda, Osaka 563-8577, Japan
| | - Kazuhiko Matsumoto
- Graduate School of Energy Science, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Rika Hagiwara
- Graduate School of Energy Science, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
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2
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Goodwin RJ, White NG. A Cationic Catechol Derivative Binds Anions in Competitive Aqueous Media. Chem Asian J 2024:e202301121. [PMID: 38269957 DOI: 10.1002/asia.202301121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Revised: 01/09/2024] [Indexed: 01/26/2024]
Abstract
A simple dihydroxy isoquinolinium molecule (3+ ) was prepared by a modification of a literature procedure. Interestingly, during optimisation of the synthesis a small amount of the natural product pseudopalmatine was isolated, and characterised for the first time by X-ray crystallography. Compound 3+ contains a catechol motif and positive charge on the same scaffold and was found to be a potent anion receptor, binding sulfate strongly in 8 : 2 d6 -acetone:D2 O and 7 : 3 d6 -acetone:D2 O (Ka >104 and 2,100 M-1 , respectively). Unsurprisingly, chloride binding was much weaker, even in the less polar solvent mixture 9 : 1 d6 -acetone:D2 O. The sulfate binding is remarkably strong for such a simple molecule, however anion binding studies were complicated by the tendency of the molecule to react with BPh4 - or BF4 - species during anion metathesis reactions. This gave two unusual zwitterions containing tetrahedral boronate centres, which were both characterised by X-ray crystallography.
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Affiliation(s)
- Rosemary J Goodwin
- Research School of Chemistry, Australian National University, Canberra, ACT, 2601, Australia
| | - Nicholas G White
- Research School of Chemistry, Australian National University, Canberra, ACT, 2601, Australia
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3
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Fluoride-Ion-Mediated 1H/2D Exchange in Anion Receptors: A 19F NMR Probe. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.135280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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4
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Zinc– and Copper–Salicyaldimine complexes: Simultaneous observation of both metal–ligand coordination and weak CH⋯N contact about a single N-donor and the transmetallation reactions. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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5
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Cao C, You X, Feng L, Luo G, Yue G, Ji X. Synthesis of new chromogenic sensors containing thiourea and selective detection for F–, H2PO4–, and Ac– anions. CAN J CHEM 2020. [DOI: 10.1139/cjc-2020-0120] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Two new chromogenic sensors 1-(2-hydroxyphenyl)-3-(4-nitrophenyl)thiourea 1 and 1-(3-hydroxypyridin-2-yl)-3-(4-nitrophenyl)thiourea 2 bearing nitrophenyl and thiourea groups were designed and synthesized by one-step procedure and characterized through 1H NMR, 13C NMR, FTIR, and MS. The anion recognition property of the receptors was studied via naked-eye detection, UV–vis, and 1H NMR. Based on the existence of amino gen and hydroxyl moieties in receptors, receptors 1 and 2 exhibit obvious selectivity by the redshift of UV–vis signals, colour changes through naked-eye detection, and binding effects for F–, H2PO4–, and Ac–. Surprisingly, the detection limits of receptor 1 for F– and Ac– were calculated to be 5.45 × 10−7 and 2.11 × 10−7 (mol/L)−1, respectively, which indicated that F– and Ac– can be identified with high sensitivity by receptor 1. Besides, simple “test strips” were developed and were used as sensors for recognition of F–, H2PO4–, or Ac– in DMSO solution. Lastly, the mechanisms of the recognition process were studied through DFT calculation and 1H NMR titration.
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Affiliation(s)
- Cheng Cao
- College of Chemistry and Chemical Engineering, Key Laboratory of Hexi Corridor Resources Utilization of Gansu, Kaiyuan Biology Technology Develop Centre, Hexi University, Zhangye 734000, P.R. China
- Key Laboratory of Clay Mineral Applied Research of Gansu Province, Center of Eco-Materials and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P.R. China
| | - Xingmei You
- College of Chemistry and Chemical Engineering, Key Laboratory of Hexi Corridor Resources Utilization of Gansu, Kaiyuan Biology Technology Develop Centre, Hexi University, Zhangye 734000, P.R. China
| | - Lei Feng
- College of Chemistry and Chemical Engineering, Key Laboratory of Hexi Corridor Resources Utilization of Gansu, Kaiyuan Biology Technology Develop Centre, Hexi University, Zhangye 734000, P.R. China
| | - Guanghong Luo
- College of Chemistry and Chemical Engineering, Key Laboratory of Hexi Corridor Resources Utilization of Gansu, Kaiyuan Biology Technology Develop Centre, Hexi University, Zhangye 734000, P.R. China
| | - Guoren Yue
- College of Chemistry and Chemical Engineering, Key Laboratory of Hexi Corridor Resources Utilization of Gansu, Kaiyuan Biology Technology Develop Centre, Hexi University, Zhangye 734000, P.R. China
| | - Xiangdong Ji
- College of Chemistry and Chemical Engineering, Key Laboratory of Hexi Corridor Resources Utilization of Gansu, Kaiyuan Biology Technology Develop Centre, Hexi University, Zhangye 734000, P.R. China
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6
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Tonouchi Y, Matsumoto K, Nagata T, Katahira M, Hagiwara R. Fluoride Ion Interactions in Alkali-Metal Fluoride–Diol Complexes. Inorg Chem 2020; 59:6631-6639. [DOI: 10.1021/acs.inorgchem.0c00783] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Yuto Tonouchi
- Graduate School of Energy Science, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Kazuhiko Matsumoto
- Graduate School of Energy Science, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Takashi Nagata
- Institute of Advanced Energy, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
| | - Masato Katahira
- Institute of Advanced Energy, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
| | - Rika Hagiwara
- Graduate School of Energy Science, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
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Yahaya I, Keleş E, Putra AU, Yahya M, Seferoğlu N, Seferoğlu Z. Microwave-enhanced and conventional procedures for the synthesis of coumarin-thiophene amides, sulfonamide, and urea derivatives: Synthesis, photophysical activities, and multiple anions signalling via different mechanisms. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127465] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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8
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Boer SA, Foyle EM, Thomas CM, White NG. Anion coordination chemistry using O-H groups. Chem Soc Rev 2019; 48:2596-2614. [PMID: 30860210 DOI: 10.1039/c8cs00828k] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
This review covers significant advances in the use of O-H groups in anion coordination chemistry. The review focuses on the use of these groups in synthetic anion receptors, as well as more recent developments in transport, self-assembly and catalysis.
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Affiliation(s)
- Stephanie A Boer
- Research School of Chemistry, The Australian National University, Canberra, Australia.
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Morshedi M, Boer SA, Thomas M, White NG. Easily-prepared Hydroxy-containing Receptors Recognize Anions in Aqueous Media. Chem Asian J 2019; 14:1271-1277. [PMID: 30747486 DOI: 10.1002/asia.201900033] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Indexed: 12/20/2022]
Abstract
Despite their ready availability, O-H groups have received relatively little attention as anion recognition motifs. Here, we report two simple hydroxy-containing anion receptors that are prepared in two facile steps followed by anion exchange, without the need for chromatographic purification at any stage. These receptors contain a pyridinium bis(amide) motif as well as hydroxyphenyl groups, and bind mono- and divalent anions in 9:1 CD3 CN:D2 O, showing a selectivity preference for sulfate. Notably, a "model" receptor that does not contain hydroxy groups shows only very weak sulfate binding in this competitive solvent mixture. In the solid state, X-ray crystallographic studies show that the receptors tend to form extended assemblies with anions; however, 1 H and DOSY NMR studies as well as molecular dynamics simulations show that only 1:1 complexes are present in solution. Molecular dynamics simulations suggest that one of the receptors suffers from competing intramolecular hydrogen bonding, while another binds partially-hydrated anions, with the receptor's O-H groups forming hydrogen bonds to water molecules within the anion's coordination sphere.
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Affiliation(s)
- Mahbod Morshedi
- Research School of Chemistry, The Australian National University, Canberra, ACT, Australia
| | - Stephanie A Boer
- Research School of Chemistry, The Australian National University, Canberra, ACT, Australia
| | - Michael Thomas
- Research School of Chemistry, The Australian National University, Canberra, ACT, Australia
| | - Nicholas G White
- Research School of Chemistry, The Australian National University, Canberra, ACT, Australia
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10
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Influence of aromatic nitro-substituents on auto-reusability of oxime-based fluoride receptors. J CHEM SCI 2018. [DOI: 10.1007/s12039-018-1526-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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11
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Singh A, Sahoo SK, Trivedi DR. Colorimetric anion sensors based on positional effect of nitro group for recognition of biologically relevant anions in organic and aqueous medium, insight real-life application and DFT studies. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 188:596-610. [PMID: 28779621 DOI: 10.1016/j.saa.2017.07.051] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Revised: 07/17/2017] [Accepted: 07/28/2017] [Indexed: 05/24/2023]
Abstract
A new six colorimetric receptors A1-A6 were designed and synthesized, characterized by typical common spectroscopic techniques like FT-IR, UV-Visible, 1H NMR, 13C NMR and ESI-MS. The receptor A1 and A2 exhibit a significant naked-eye response towards F- and AcO- ions in DMSO. Due to presences of the NO2 group at para and ortho position with extended π-conjugation of naphthyl group carrying OH as a binding site. Compared to receptor A2, A1 is extremely capable of detecting F- and AcO- ions present in the form of sodium salts in an aqueous medium. This is owed to the occurrence of NO2 group at para position induced in increasing the acidity of OH proton. Consequently, it easily gets deprotonated in aqueous media. The detection limit of receptor A1 was turned out to be 0.40 and 0.35ppm for F- and AcO- ions which is beneath WHO permission level (1.0ppm). Receptor A1 shows a solitary property of solvatochromism in different aprotic solvents in presence of AcO- ion. Receptor A1 depicts high selectivity towards AcO- ion in DMSO: HEPES buffer (9:1, v/v). Receptor A1 proved itself for real life application by detecting anion in solution and solid state. The binding mechanism of receptor A1 with AcO- and F- ions was monitored from 1HNMR titration and DFT study.
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Affiliation(s)
- Archana Singh
- Supramolecular Chemistry Laboratory, Department of Chemistry, National Institute of Technology Karnataka (NITK) Surathkal, Srinivasnagar, 575 025, Karnataka, India
| | - Suban K Sahoo
- Department of Applied Chemistry, S.V. National Institute Technology Surat, 395 007, Gujarat, India
| | - Darshak R Trivedi
- Supramolecular Chemistry Laboratory, Department of Chemistry, National Institute of Technology Karnataka (NITK) Surathkal, Srinivasnagar, 575 025, Karnataka, India.
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12
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Zhao L, Liu G, Zhang B. A colorimetric and fluorescence enhancement anion probe based on coumarin compounds. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 169:45-49. [PMID: 27323317 DOI: 10.1016/j.saa.2016.05.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Revised: 04/03/2016] [Accepted: 05/02/2016] [Indexed: 06/06/2023]
Abstract
In this paper, anion probe 1 was designed and synthesized by using phenprocoumon containing acyl hydrazine with p-nitro azo salicylaldehyde reaction Dickson et al. (2008) Dickson et al. (2008) [1]. In the anion probe 1, the nitro moiety is a signaling group and the phenolic hydroxyl moiety is anion binding site. Then the anion probe 1 was characterized by mass spectra (MS) and infrared spectra (IR). The binding properties of the anion probe 1 for anions such as F(-), AcO(-), H2PO4(-), OH(-), Cl(-), Br(-) and I(-) were investigated by ultraviolet-visible (UV-Vis) spectra and fluorescence spectra Shao et al. (2008) Shao et al. (2008) [2]. Furthermore, the color of anion probe 1 after addition of F(-), AcO(-), H2PO4(-) and OH(-) in DMSO changed from yellow to blue, while no obvious color changes were observed by addition of other tested anions. Accordingly, the anion probe 1 could sense visually F(-), AcO(-), H2PO4(-) and OH(-) without resorting to any spectroscopic instrumentation Amendola et al. (2010) Amendola et al. (2010) [3].
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Affiliation(s)
- Limin Zhao
- College of Chemistry and Chemical Engineering, Chifeng University, Chifeng 024000, PR China.
| | - Ge Liu
- College of Chemistry and Chemical Engineering, Chifeng University, Chifeng 024000, PR China
| | - Baofeng Zhang
- No. 2 Experimental Middle School of Chifeng, Chifeng 024000, PR China
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13
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Engle KM, Pfeifer L, Pidgeon GW, Giuffredi GT, Thompson AL, Paton RS, Brown JM, Gouverneur V. Coordination diversity in hydrogen-bonded homoleptic fluoride-alcohol complexes modulates reactivity. Chem Sci 2015; 6:5293-5302. [PMID: 29449931 PMCID: PMC5669313 DOI: 10.1039/c5sc01812a] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Accepted: 06/22/2015] [Indexed: 11/21/2022] Open
Abstract
The nucleophilic reactivity of fluoride ion is altered in the presence of hydrogen-bond donors, including alcohols. Relatively little is known about the coordination involved; to rectify this, the X-ray structures of fourteen novel fluoride-alcohol complexes with tetrabutylammonium as the counterion have been determined. The coordination number varies from two to four depending on the steric bulk of the alcohol and is closely linked to trends in reactivity. This diversity in coordination stoichiometry is unprecedented but significant, as it implies differences in the ability of the fluoride-alcohol complexes to dissociate in solution with release of a more active and/or selective fluoride source.
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Affiliation(s)
- Keary M Engle
- Chemistry Research Laboratory , Department of Chemistry , Oxford University , OX1 3TA , UK .
| | - Lukas Pfeifer
- Chemistry Research Laboratory , Department of Chemistry , Oxford University , OX1 3TA , UK .
| | - George W Pidgeon
- Chemistry Research Laboratory , Department of Chemistry , Oxford University , OX1 3TA , UK .
| | - Guy T Giuffredi
- Chemistry Research Laboratory , Department of Chemistry , Oxford University , OX1 3TA , UK .
| | - Amber L Thompson
- Chemistry Research Laboratory , Department of Chemistry , Oxford University , OX1 3TA , UK .
| | - Robert S Paton
- Chemistry Research Laboratory , Department of Chemistry , Oxford University , OX1 3TA , UK .
| | - John M Brown
- Chemistry Research Laboratory , Department of Chemistry , Oxford University , OX1 3TA , UK .
| | - Véronique Gouverneur
- Chemistry Research Laboratory , Department of Chemistry , Oxford University , OX1 3TA , UK .
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14
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Tarai A, Baruah JB. A study on fluoride detection and assembly of hydroxyaromatic aldoximes caused by tetrabutylammonium fluoride. CrystEngComm 2015. [DOI: 10.1039/c4ce02311k] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Different assemblies formed by the interactions of tetrabutylammonium fluoride with hydroxy-aromatic oximes show characteristic optical properties.
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Affiliation(s)
- Arup Tarai
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati-781 039, India
| | - Jubaraj B. Baruah
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati-781 039, India
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15
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Borah S, Konwar G, Borborah A, Gogoi N. Auto-reusable receptors for selective colorimetric recognition of fluoride. RSC Adv 2015. [DOI: 10.1039/c5ra22616c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Two auto-reusable colorimetric receptors for selective recognition of fluoride in polar medium are reported.
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16
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Sung WY, Lee J, Lee MH. Triarylborane Lewis acids with indole or phenol group: B/H hybrid receptors for fluoride. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2014.11.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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17
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Manivannan R, Satheshkumar A, El-Mossalamy ESH, Al-Harbi LM, Kosa SA, Elango KP. Design, synthesis and characterization of indole based anion sensing receptors. NEW J CHEM 2015. [DOI: 10.1039/c4nj01728e] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The fluoride binding ability of indole based receptors was found to depend on the electron deficiency of the acceptor unit and enhanced H-bond donating character of the indole N–H group.
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Affiliation(s)
- Ramalingam Manivannan
- Department of Chemistry
- Gandhigram Rural Institute (Deemed University)
- Gandhigram 624302
- India
| | | | | | - Laila M. Al-Harbi
- Chemistry Department
- Faculty of Science
- King Abdul-Aziz University
- Jeddah 21589
- Saudi Arabia
| | - Samia A. Kosa
- Chemistry Department
- Faculty of Science
- King Abdul-Aziz University
- Jeddah 21589
- Saudi Arabia
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18
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A Reversible and Reusable Selective Chemosensor for Fluoride Detection Using a Phenolic OH-Containing BODIPY Dye by Both Colorimetric ‘Naked-eye’ and Fluorometric Modes. J Fluoresc 2014; 24:1757-66. [DOI: 10.1007/s10895-014-1464-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2014] [Accepted: 09/16/2014] [Indexed: 10/24/2022]
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19
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Sundar A, Prabhu M, Indra Gandhi N, Marappan M, Rajagopal G. Synthesis, characterization, structural analysis of metal(II) complexes of N'-[(E)-3-Bromo-5-Chloro-2-hydroxybenzidene]-4-hydroxybenzohydrazide-Multisubstituted Schiff base as a F(-) and Cu(2+) ions selective chemosensor. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 129:509-518. [PMID: 24759756 DOI: 10.1016/j.saa.2014.03.084] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2014] [Revised: 03/09/2014] [Accepted: 03/21/2014] [Indexed: 06/03/2023]
Abstract
New colorimetric chemosensor, N'-[(E)-3-Bromo-5-Chloro-2-hydroxybenzidene]-4-hydroxybenzohydrazide, containing OH and NH groups as binding sites have been synthesized and characterized by spectral UV, IR, NMR and ESR. The molecular structure of ligand is determined by X-ray crystallography and it has the monoclinic space group P21/c with cell parameters a=15.1058(6), b=14.3433(6), c=17.5800(8)Å and Z=8. The electronic spectral measurements show that Co(2+), Ni(2+) and Zn(2+) complexes have tetrahedral geometry, while Cu(2+) complex has square planar geometry. Magnetic measurements show that Cu(2+), Co(2+) and Ni(2+) complexes have paramagnetic behavior and Zn(2+) complex has diamagnetic behavior. Anion binding studies carried out using (1)H NMR and UV-visible spectrophotometric titrations revealed that these receptors exhibit selective recognition towards F(-) over other halide anions. The selectivity for F(-) among the halides is attributed mainly to the hydrogen-bond interaction of the receptor with F(-). Receptor (5 × 10(-5)M) shows color change from colorless to yellow in the presence of tetrabutylammonium fluoride (TBAF, 1.5 × 10(-3)M). Moreover, F(-)-induced color changes remain the same even in the presence of large excess of Cl(-), Br(-) and I(-). The binding constant is found to be higher towards F(-) ion and this may be due to presence of OH group, which offers extra binding site. Chromogenic receptor undergoes distinct color changes from colorless to green on gradual addition of Cu(2+) can be used as colorimetric probes for spectrophotometric and visual analysis of Cu(2+) in the presence of other transition metal ions such as Co(2+), Ni(2+) and Zn(2+).
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Affiliation(s)
- A Sundar
- Department of Chemistry, Madras Medical College, Chennai 600 003, India
| | - M Prabhu
- Department of Chemistry, Government Arts College (Men), Nandanam, Chennai 600 036, India
| | - N Indra Gandhi
- PG & Research Department of Chemistry, Presidency College (Autonomous), Chennai 600 005, India
| | - M Marappan
- Department of Chemistry, Government Arts College (Men), Nandanam, Chennai 600 036, India.
| | - G Rajagopal
- Department of Chemistry, Madras Medical College, Chennai 600 003, India; Department of Chemistry, Government Arts College, Melur, Madurai 625 106, India.
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20
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RoyChowdhury A, Ghosh P, Saha SK, Mitra P, Banerjee P. Exploratory studies towards various anion recognition chemistry by two different sized cleft shaped organic ligands. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 124:492-499. [PMID: 24508887 DOI: 10.1016/j.saa.2014.01.024] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Revised: 12/10/2013] [Accepted: 01/10/2014] [Indexed: 06/03/2023]
Abstract
Indole and urea based two organic receptors have been synthesized by an easy synthetic process. These two receptors have strong sensitivity and selectivity for several bio-relevant anions. Receptor 1 and 2 were synthesized from indole-2-carboxylic acid and p-anisidine respectively, which are low cost starting materials. Receptor 1 can selectively sense anions like F(-), OAc(-) and H2PO4(-), while receptor 2 can only sense F(-) and H2PO4(-). Both receptors are silent toward anions like Cl(-), Br(-), I(-) and NO3(-). It is the difference in their shape and size which are responsible for different anion sensing. The nature of these host-guest type interactions was analyzed by convenient spectrophotometric techniques like UV-Vis, fluorescence, (1)H NMR, FT-IR studies and also confirmed by electrochemical techniques like cyclic voltammetry studies of the two ligand receptors with convenient anions. Between receptor 1 and 2, receptor 2 was crystallographically characterized also.
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Affiliation(s)
- Additi RoyChowdhury
- Surface Engineering & Tribology Group, CSIR-Central Mechanical Engineering Research Institute, Mahatma Gandhi Avenue, Durgapur 713209, India; Academy of Scientific & Innovative Research, CSIR-Central Mechanical Engineering Research Institute, Mahatma Gandhi Avenue, Durgapur 713209, India
| | - Pritam Ghosh
- Surface Engineering & Tribology Group, CSIR-Central Mechanical Engineering Research Institute, Mahatma Gandhi Avenue, Durgapur 713209, India
| | - Sourav Kr Saha
- Surface Engineering & Tribology Group, CSIR-Central Mechanical Engineering Research Institute, Mahatma Gandhi Avenue, Durgapur 713209, India; Academy of Scientific & Innovative Research, CSIR-Central Mechanical Engineering Research Institute, Mahatma Gandhi Avenue, Durgapur 713209, India
| | - Partha Mitra
- Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - Priyabrata Banerjee
- Surface Engineering & Tribology Group, CSIR-Central Mechanical Engineering Research Institute, Mahatma Gandhi Avenue, Durgapur 713209, India; Academy of Scientific & Innovative Research, CSIR-Central Mechanical Engineering Research Institute, Mahatma Gandhi Avenue, Durgapur 713209, India.
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Okudan A, Erdemir S, Kocyigit O. ‘Naked-eye’ detection of fluoride and acetate anions by using simple and efficient urea and thiourea based colorimetric sensors. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2013.04.077] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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22
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Tong WL, Yiu SM, Chan MCW. Crowded Bis-(M-salphen) [M = Pt(II), Zn(II)] Coordination Architectures: Luminescent Properties and Ion-Selective Responses. Inorg Chem 2013; 52:7114-24. [DOI: 10.1021/ic400692x] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Wah-Leung Tong
- Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong
Kong, China
| | - Shek-Man Yiu
- Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong
Kong, China
| | - Michael C. W. Chan
- Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong
Kong, China
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23
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Guo Z, Yiu SM, Chan MCW. Shape-Persistent (Pt-salphen)2Phosphorescent Coordination Frameworks: Structural Insights and Selective Perturbations. Chemistry 2013; 19:8937-47. [DOI: 10.1002/chem.201300421] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2013] [Indexed: 11/09/2022]
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24
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Suganya S, Velmathi S. Simple azo-based salicylaldimine as colorimetric and fluorescent probe for detecting anions in semi-aqueous medium. J Mol Recognit 2013; 26:259-67. [DOI: 10.1002/jmr.2268] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2012] [Revised: 12/31/2012] [Accepted: 01/29/2013] [Indexed: 11/07/2022]
Affiliation(s)
- Sivalingam Suganya
- Organic and Polymer Synthesis Laboratory, Department of Chemistry; National Institute of Technology; Tiruchirappalli; 620 015; India
| | - Sivan Velmathi
- Organic and Polymer Synthesis Laboratory, Department of Chemistry; National Institute of Technology; Tiruchirappalli; 620 015; India
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25
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Kondo SI, Bie Y, Yamamura M. Ratiometric Fluorescence Detection of Anions by Silanediol-based Receptors Bearing Anthryl and Pyrenyl Groups. Org Lett 2013; 15:520-3. [DOI: 10.1021/ol303332k] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Shin-ichi Kondo
- Department of Material and Biological Chemistry, Faculty of Science, Yamagata University, Yamagata 990-8560, Japan, Institute for Regional Innovation, Yamagata University, Kanakame, Kaminoyama, Yamagata 999-3101, Japan, and Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
| | - Yi Bie
- Department of Material and Biological Chemistry, Faculty of Science, Yamagata University, Yamagata 990-8560, Japan, Institute for Regional Innovation, Yamagata University, Kanakame, Kaminoyama, Yamagata 999-3101, Japan, and Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
| | - Masaki Yamamura
- Department of Material and Biological Chemistry, Faculty of Science, Yamagata University, Yamagata 990-8560, Japan, Institute for Regional Innovation, Yamagata University, Kanakame, Kaminoyama, Yamagata 999-3101, Japan, and Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
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Abstract
A number of indolocarbazole-based anion receptors were prepared and their anion-binding behaviors were characterized in solution and in the solid state. First, chain-length-dependent binding affinities of chloride ion were revealed using a series of indolocarbazoles that consisted of one to four indolocarbazole units. The binding affinities were steadily enhanced from monomer to dimer, then to trimer by Gibb’s free energy (–∆∆G) = 2.4 ± 0.1 kcal/mol, and then nearly saturated. Second, a water-soluble trimer folded to generate an internal helical cavity with six convergent NHs, wherein small halides bound in water in the order of Cl– (65 M–1) > F– (46 M–1), and Br– (19 M–1). Third, X-ray crystal structures clearly proved helical folding of a trimer in the presence of sulfate ion, in which left- and right-handed helices stacked alternatively. It was also shown that the selectivity of anion binding could be varied by the modification of the spacer groups connecting indolocarbazole units. Finally, we prepared chiral indolocabazole dimers that adopted helical structures by intramolecular hydrogen bonds and displayed complete inversion of the helical sense upon anion binding. The dimers gave characteristic optical readouts in a reversible manner according to chemical stimuli, thus functioning as chirooptical molecular switches.
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28
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Guchhait T, Mani G. Dipyrrolylmethane-based Macrobicyclic Azacryptand: Synthesis, X-ray Structures, Conformational and Anion Binding Properties. J Org Chem 2011; 76:10114-21. [DOI: 10.1021/jo201969f] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tapas Guchhait
- Department of Chemistry, Indian Institute of Technology, Kharagpur, India 721 302
| | - Ganesan Mani
- Department of Chemistry, Indian Institute of Technology, Kharagpur, India 721 302
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29
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Velmathi S, Reena V, Suganya S, Anandan S. Pyrrole Based Schiff Bases as Colorimetric and Fluorescent Chemosensors for Fluoride and Hydroxide Anions. J Fluoresc 2011; 22:155-62. [DOI: 10.1007/s10895-011-0942-z] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2011] [Accepted: 07/28/2011] [Indexed: 10/17/2022]
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30
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A fluoride selective dipyrromethane-TCNQ colorimetric sensor based on charge-transfer. Talanta 2011; 84:947-51. [DOI: 10.1016/j.talanta.2011.02.034] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2011] [Revised: 02/19/2011] [Accepted: 02/21/2011] [Indexed: 11/19/2022]
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31
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Ashokkumar P, Ramakrishnan VT, Ramamurthy P. Head-to-tail intermolecular hydrogen bonding of OH and NH groups with fluoride. Chemphyschem 2011; 12:389-96. [PMID: 21254318 DOI: 10.1002/cphc.201000463] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2010] [Revised: 10/19/2010] [Indexed: 11/09/2022]
Abstract
To explore the anion-recognition ability of the phenolic hydroxyl group and the amino hydrogen, we synthesized three different acridinedione (ADD) based anion receptors, 1, 2 and 3, having OH, NH, and combination of OH and NH groups, respectively. Absorption, emission and (1)H NMR spectral studies revealed that receptor 1, having only a phenolic OH group, shows selective deprotonation of the hydroxyl proton towards F(-), which results in an "ON-OFF"-type signal in the fluorescence spectral studies. Receptor 2, which only has an amino hydrogen, also shows deprotonation of the amino hydrogen with F(-), whereas receptor 3 (having both OH and NH groups) shows head-to-tail intermolecular hydrogen bonding of OH and NH groups with F(-) prior to deprotonation. The observation of hydrogen bonding of the OH and NH groups in a combined solution of 1 and 2 with F(-) in a head-to-tail hetero-intermolecular fashion, and the absence of head-to-head and tail-to-tail intermolecular hydrogen bonding in 1 and 2 with F(-), prove that the difference in the acidity of the OH and NH protons leads to the formation of an intermolecular hydrogen-bonding complex with F(-) prior to deprotonation. The presence of this hydrogen-bonding complex was confirmed by absorption spectroscopy, 3D emission contour studies, and (1)H NMR titration.
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Affiliation(s)
- Pichandi Ashokkumar
- National Centre for Ultrafast Processes, University of Madras, Taramani Campus, Chennai-600 113, India
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32
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Tsubaki K, Tanima D, Fuji K. Colorimetoric Recognition based on Functional Phenolphthalein Derivatives. J SYN ORG CHEM JPN 2011. [DOI: 10.5059/yukigoseikyokaishi.69.266] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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33
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Sun S, Tong WL, Chan MC. Alternating Poly(Pt-salphen)-(p-phenyleneethynylene) as Phosphorescent Conjugated Linear-Rod and Coilable Sensory Materials. Macromol Rapid Commun 2010; 31:1965-9. [DOI: 10.1002/marc.201000266] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2010] [Revised: 06/27/2010] [Indexed: 11/11/2022]
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34
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Sivakumar R, Reena V, Ananthi N, Babu M, Anandan S, Velmathi S. Colorimetric and fluorescence sensing of fluoride anions with potential salicylaldimine based schiff base receptors. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2010; 75:1146-1151. [PMID: 20080437 DOI: 10.1016/j.saa.2009.12.077] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2009] [Revised: 12/15/2009] [Accepted: 12/31/2009] [Indexed: 05/28/2023]
Abstract
Salicylaldimine based schiff base receptors with different substituents showing fluorescent enhancement in the presence of fluoride anion was visualized through naked eye as well as by change in spectral properties (UV-vis and fluorescent techniques). The reason for such fluorescence enhancement may be due to hydrogen bond interaction between receptor recognition site and fluoride anion. Such a hydrogen bond interaction creates a six-membered transition state, which avoids quenching processes. To support this, fluorescence enhancement factor (FEF) was calculated and it was found to be more (FEF=652) for -NO(2) substituted receptor compared to other receptors.
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35
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Wenzel M, Bruere SR, Knapp QW, Tasker PA, Plieger PG. Zwitterionic dicopper helicates: anion encapsulation and binding studies. Dalton Trans 2010; 39:2936-41. [PMID: 20200722 DOI: 10.1039/b922998a] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis and spectroscopic studies of a dicopper(II) double helicate capable of binding anions is described. X-Ray crystallographic analysis of three anion variations of the complex have shown that the helicate is capable of accommodating anions with an approximate volume of 0.09 nm(3) and smaller. ESI-MS revealed that the supramolecular complexes retain the 2 : 2 ligand : metal cluster in solution. Spectrometric analysis has shown the complex is capable of binding anions in a 1 : 1 ratio of helicate to anion, in the order SO(4)(2-) > HPO(4)(2-) > ClO(4)(-) approximately BF(4)(-) approximately NO(3)(-). We demonstrate that coordination to the metal centre, H-bonding and electrostatic interactions all play a role in encapsulating the anions.
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Affiliation(s)
- Marco Wenzel
- Institute of Fundamental Sciences, Massey University, Private Bag 11 222, Palmerston North, New Zealand
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36
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Redshaw C. Vanadium procatalysts bearing chelating aryloxides: structure–activity trends in ethylene polymerisation. Dalton Trans 2010; 39:5595-604. [DOI: 10.1039/b924088h] [Citation(s) in RCA: 128] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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37
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Borisova NE, Askerov RKO, Maharramov AM, Khrustalev VN, Reshetova MD, Ustunyuk YA. Self-assembly of a palladium complex formed from two U-shaped calixsalen molecules. Dalton Trans 2010; 39:5768-71. [DOI: 10.1039/c002813d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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38
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Devaraj S, Saravanakumar D, Kandaswamy M. Simple colorimetric fluoride sensors based on nitrophenyl derivatives. Supramol Chem 2009. [DOI: 10.1080/10610270902795376] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Soosai Devaraj
- a Department of Inorganic Chemistry , School of Chemical Sciences, University of Madras , Guindy Campus, Chennai, 600 025, India
| | - Duraisamy Saravanakumar
- a Department of Inorganic Chemistry , School of Chemical Sciences, University of Madras , Guindy Campus, Chennai, 600 025, India
| | - Muthusamy Kandaswamy
- a Department of Inorganic Chemistry , School of Chemical Sciences, University of Madras , Guindy Campus, Chennai, 600 025, India
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39
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Affiliation(s)
| | - Bhaskar Garg
- a Bioorganic Research Laboratory, Department of Chemistry , University of Delhi , Delhi, India
| | - Tanuja Bisht
- a Bioorganic Research Laboratory, Department of Chemistry , University of Delhi , Delhi, India
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40
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41
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Abstract
Fluoride anion recognition is attracting a mounting interest in the scientific community due to its duplicitous nature. It is a useful chemical for many industrial applications, and it has been used in human diet, but, recently it has been accused for several human pathologies. Here we describe the ample panorama of different approaches the chemists world-wide have employed to face the challenge of fluoride binding, and we outline some of the research which in our view can contribute to the development of this field, especially when fluoride binding has to be achieved in highly competitive protic solvents and water.
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42
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Affiliation(s)
- Jonathan W Steed
- Department of Chemistry, Durham University, South Road, Durham, UK DH1 3LE.
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43
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44
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Homden D, Redshaw C, Wright JA, Hughes DL, Elsegood MRJ. Early Transition Metal Complexes Bearing a C-Capped Tris(phenolate) Ligand Incorporating a Pendant Imine Arm: Synthesis, Structure, and Ethylene Polymerization Behavior. Inorg Chem 2008; 47:5799-814. [DOI: 10.1021/ic702506w] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Damien Homden
- School of Chemical Sciences and Pharmacy, University of East Anglia, Norwich, NR4 7TJ, U.K., and Chemistry Department, Loughborough University, Loughborough, Leicestershire, LE11 3TU,U.K
| | - Carl Redshaw
- School of Chemical Sciences and Pharmacy, University of East Anglia, Norwich, NR4 7TJ, U.K., and Chemistry Department, Loughborough University, Loughborough, Leicestershire, LE11 3TU,U.K
| | - Joseph A. Wright
- School of Chemical Sciences and Pharmacy, University of East Anglia, Norwich, NR4 7TJ, U.K., and Chemistry Department, Loughborough University, Loughborough, Leicestershire, LE11 3TU,U.K
| | - David L. Hughes
- School of Chemical Sciences and Pharmacy, University of East Anglia, Norwich, NR4 7TJ, U.K., and Chemistry Department, Loughborough University, Loughborough, Leicestershire, LE11 3TU,U.K
| | - Mark R. J. Elsegood
- School of Chemical Sciences and Pharmacy, University of East Anglia, Norwich, NR4 7TJ, U.K., and Chemistry Department, Loughborough University, Loughborough, Leicestershire, LE11 3TU,U.K
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45
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Fonari MS, Ganin EV, Gelmboldt VO, Basok SS, Luisi BS, Moulton B. Binding of fluoro-containing anions to hexaazamacrocyclic ligand: Competitive interactions of fluoride and tetrafluoroborate anions with hexaprotonated [18]aneN6. INORG CHEM COMMUN 2008. [DOI: 10.1016/j.inoche.2008.01.028] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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46
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Cametti M, Dalla Cort A, Mandolini L, Nissinen M, Rissanen K. Specific recognition of fluoride anion using a metallamacrocycle incorporating a uranyl-salen unit. NEW J CHEM 2008. [DOI: 10.1039/b806149a] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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47
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Saravanakumar D, Devaraj S, Iyyampillai S, Mohandoss K, Kandaswamy M. Schiff’s base phenol–hydrazone derivatives as colorimetric chemosensors for fluoride ions. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2007.11.006] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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48
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Ju J, Park M, Suk JM, Lah MS, Jeong KS. An anion receptor with NH and OH groups for hydrogen bonds. Chem Commun (Camb) 2008:3546-8. [DOI: 10.1039/b804284e] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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49
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Kondo SI, Fukuda A, Yamamura T, Tanaka R, Unno M. Anion recognition by a disiloxane-1,3-diol in organic solvents. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.09.067] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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50
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Devaraj S, Saravanakumar D, Kandaswamy M. Dual chemosensing properties of new anthraquinone-based receptors toward fluoride ions. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.02.098] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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