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Jing L, Deplazes E, Clegg JK, Wu X. A charge-neutral organic cage selectively binds strongly hydrated sulfate anions in water. Nat Chem 2024; 16:335-342. [PMID: 38351381 DOI: 10.1038/s41557-024-01457-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 01/19/2024] [Indexed: 02/16/2024]
Abstract
In biological systems, enzymes and transport proteins can bind anions in aqueous media solely by forming hydrogen bonds with charge-neutral motifs. Reproducing this functionality in synthetic systems presents challenges and incurs high costs, particularly when targeting strongly hydrated anions such as sulfate. Here we report a [2.2.2]urea cryptand (cage), synthesized in one pot, that selectively binds sulfate in a mixture of dimethyl sulfoxide and water and in water with affinities in the micromolar to millimolar range. The neutral cage bearing six urea groups donates 12 strong hydrogen bonds to encapsulate a sulfate anion, showing favourable enthalpy even in pure water. Sulfate binding can be further enhanced by using micelles to provide a low-polarity microenvironment. The cage finds utility in analysing divalent anions in water and beverage samples or in removing sulfate. The work demonstrates the achievability of robust and selective anion binding in water with minimal synthetic efforts, by using neutral NH hydrogen bonds akin to those found in biology.
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Affiliation(s)
- Liuyang Jing
- Fujian Provincial Key Laboratory of Innovative Drug Target Research, School of Pharmaceutical Sciences, Xiamen University, Xiamen, China
| | - Evelyne Deplazes
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Queensland, Australia.
| | - Jack K Clegg
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Queensland, Australia
| | - Xin Wu
- Fujian Provincial Key Laboratory of Innovative Drug Target Research, School of Pharmaceutical Sciences, Xiamen University, Xiamen, China.
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Queensland, Australia.
- MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China.
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Carpentier R, Lambert S, Brunetti E, Jabin I, Bartik K. Specific Binding of Primary Ammoniums in Aqueous Media by Homooxacalixarenes Incorporated into Micelles. J Org Chem 2022; 87:12749-12758. [PMID: 36149399 DOI: 10.1021/acs.joc.2c01318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The development of artificial receptors for efficient recognition of analytes in water is a challenging task. Homooxacalix[3]arene-based receptor 1, which is selective toward primary ammoniums in organic solvents, was transferred into water following two different strategies: direct solubilization and micellar incorporation. Extensive 1H NMR studies showed that recognition of ammoniums is only observed in the case of micellar incorporation, highlighting the beneficial effect of the microenvironment of the micellar core. The selectivity of the system for primary ammoniums over secondary and tertiary ones was also maintained. The hydrophobic effect plays an important role in the recognition properties, which are counterion-dependent due to the energy penalty for the dissociation of certain ammonium salts in the apolar micellar core. This study shows that the straightforward self-assembly process used for the encapsulation of artificial receptors in micelles is an efficient strategy for developing water-soluble nanosized supramolecular recognition systems.
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Affiliation(s)
- Romain Carpentier
- Université libre de Bruxelles (ULB), Ecole polytechnique de Bruxelles, Engineering of Molecular NanoSystems, Avenue F.D. Roosevelt 50, CP165/64, B-1050 Brussels, Belgium.,Université libre de Bruxelles (ULB), Laboratoire de Chimie Organique, Avenue F.D. Roosevelt 50, CP160/06, B-1050 Brussels, Belgium
| | - Simon Lambert
- Université libre de Bruxelles (ULB), Ecole polytechnique de Bruxelles, Engineering of Molecular NanoSystems, Avenue F.D. Roosevelt 50, CP165/64, B-1050 Brussels, Belgium.,Université libre de Bruxelles (ULB), Laboratoire de Chimie Organique, Avenue F.D. Roosevelt 50, CP160/06, B-1050 Brussels, Belgium
| | - Emilio Brunetti
- Université libre de Bruxelles (ULB), Ecole polytechnique de Bruxelles, Engineering of Molecular NanoSystems, Avenue F.D. Roosevelt 50, CP165/64, B-1050 Brussels, Belgium.,Université libre de Bruxelles (ULB), Laboratoire de Chimie Organique, Avenue F.D. Roosevelt 50, CP160/06, B-1050 Brussels, Belgium
| | - Ivan Jabin
- Université libre de Bruxelles (ULB), Laboratoire de Chimie Organique, Avenue F.D. Roosevelt 50, CP160/06, B-1050 Brussels, Belgium
| | - Kristin Bartik
- Université libre de Bruxelles (ULB), Ecole polytechnique de Bruxelles, Engineering of Molecular NanoSystems, Avenue F.D. Roosevelt 50, CP165/64, B-1050 Brussels, Belgium
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Abstract
The quantification of anion binding by molecular receptors within lipid bilayers remains challenging. Here we measure anion binding in lipid bilayers by creating a fluorescent macrocycle featuring a strong sulfate affinity. We find the determinants of anion binding in lipid bilayers to be different from those expected that govern anion binding in solution. Charge-dense anions H2PO4- and Cl- that prevail in dimethyl sulfoxide fail to bind to the macrocycle in lipids. In stark contrast, ClO4- and I- that hardly bind in dimethyl sulfoxide show surprisingly significant affinities for the macrocycle in lipids. We reveal a lipid bilayer anion binding principle that depends on anion polarisability and bilayer penetration depth of complexes leading to unexpected advantages of charge-diffuse anions. These insights enhance our understanding of how biological systems select anions and guide the design of functional molecular systems operating at biomembrane interfaces.
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Ren X, Wang Y, Meng Q, Jia H, Wang Y, Kong X, Duan C, Zhang Z. A Coumarin-based Colorimetric and Fluorescent Chemosensor for the “Naked-eye” Detection of Fluoride ion in 100 % Natural Water Medium Using Coated Chromatography Plates. ChemistrySelect 2016. [DOI: 10.1002/slct.201600822] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Xianxuan Ren
- Key Laboratory for Functional Material, Educational Department of Liaoning Province; University of Science and Technology Liaoning; Anshan 114051 P. R. China
| | - Yue Wang
- Key Laboratory for Functional Material, Educational Department of Liaoning Province; University of Science and Technology Liaoning; Anshan 114051 P. R. China
| | - Qingtao Meng
- Key Laboratory for Functional Material, Educational Department of Liaoning Province; University of Science and Technology Liaoning; Anshan 114051 P. R. China
- State Key Laboratory of Fine Chemicals; Dalian University of Technology; 2 Linggong Road, Dalian High-Tech Industrial Zone 116024 P. R. China
| | - Hongmin Jia
- Key Laboratory for Functional Material, Educational Department of Liaoning Province; University of Science and Technology Liaoning; Anshan 114051 P. R. China
| | - Yongfei Wang
- Key Laboratory for Functional Material, Educational Department of Liaoning Province; University of Science and Technology Liaoning; Anshan 114051 P. R. China
| | - Xiangfeng Kong
- Key Laboratory for Functional Material, Educational Department of Liaoning Province; University of Science and Technology Liaoning; Anshan 114051 P. R. China
| | - Chunying Duan
- State Key Laboratory of Fine Chemicals; Dalian University of Technology; 2 Linggong Road, Dalian High-Tech Industrial Zone 116024 P. R. China
| | - Zhiqiang Zhang
- Key Laboratory for Functional Material, Educational Department of Liaoning Province; University of Science and Technology Liaoning; Anshan 114051 P. R. China
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Tran QC, Bui VT, Dao VD, Lee JK, Choi HS. Ionic Liquid-Based Polymer Electrolytes via Surfactant-Assisted Polymerization at the Plasma-Liquid Interface. ACS APPLIED MATERIALS & INTERFACES 2016; 8:16125-16135. [PMID: 27281115 DOI: 10.1021/acsami.6b04947] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We first report an innovative method, which we refer to as interfacial liquid plasma polymerization, to chemically cross-link ionic liquids (ILs). By this method, a series of all-solid state, free-standing polymer electrolytes is successfully fabricated where ILs are used as building blocks and ethylene oxide-based surfactants are employed as an assisted-cross-linking agent. The thickness of the films is controlled by the plasma exposure time or the ratio of surfactant to ILs. The chemical structure and properties of the polymer electrolyte are characterized by scanning electron microscopy (SEM), Fourier transformation infrared spectroscopy (FTIR), nuclear magnetic resonance (NMR) spectroscopy, X-ray photoelectron spectroscopy (XPS), differential scanning calorimetry (DSC), and electrochemical impedance spectroscopy (EIS). Importantly, the underlying polymerization mechanism of the cross-linked IL-based polymer electrolyte is studied to show that fluoroborate or halide anions of ILs together with the aid of a small amount of surfactants having ethylene oxide groups are necessary to form cross-linked network structures of the polymer electrolyte. The ionic conductivity of the obtained polymer electrolyte is 2.28 × 10(-3) S·cm(-1), which is a relatively high value for solid polymer electrolytes synthesized at room temperature. This study can serve as a cornerstone for developing all-solid state polymer electrolytes with promising properties for next-generation electrochemical devices.
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Affiliation(s)
- Quoc Chinh Tran
- Department of Chemical Engineering and Applied Chemistry, Chungnam National University , 220 Gung-Dong, Yuseong-Gu, Daejeon 305-764, Republic of Korea
| | - Van-Tien Bui
- Department of Chemical Engineering and Applied Chemistry, Chungnam National University , 220 Gung-Dong, Yuseong-Gu, Daejeon 305-764, Republic of Korea
- Institute of Research and Development, Duy Tan University , R.809, K7/25 Quang Trung, Da Nang 550000, Viet Nam
| | - Van-Duong Dao
- Department of Chemical Engineering and Applied Chemistry, Chungnam National University , 220 Gung-Dong, Yuseong-Gu, Daejeon 305-764, Republic of Korea
| | - Joong-Kee Lee
- Energy Storage Research Center, Korea Institute of Science and Technology , P.O. Box 131, Cheongryang, Seoul 130-650, Republic of Korea
| | - Ho-Suk Choi
- Department of Chemical Engineering and Applied Chemistry, Chungnam National University , 220 Gung-Dong, Yuseong-Gu, Daejeon 305-764, Republic of Korea
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Mäkelä T, Minkkinen ME, Rissanen K. Ion Pair Binding in the Solid-State with Ditopic Crown Ether Uranyl Salophen Receptors. Inorg Chem 2016; 55:1339-46. [DOI: 10.1021/acs.inorgchem.5b02780] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Toni Mäkelä
- viz. University of Jyvaskyla, Department of Chemistry, Nanoscience Center, P.O. Box. 35, FI-40014 University of Jyvaskyla, Finland
| | - Miia-Elina Minkkinen
- viz. University of Jyvaskyla, Department of Chemistry, Nanoscience Center, P.O. Box. 35, FI-40014 University of Jyvaskyla, Finland
| | - Kari Rissanen
- viz. University of Jyvaskyla, Department of Chemistry, Nanoscience Center, P.O. Box. 35, FI-40014 University of Jyvaskyla, Finland
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Roy A, Saha T, Talukdar P. Turn-on fluorescent probe designed for fluoride ion sensing in aqueous media. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.06.086] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Borah S, Das BP, Konwar G, Mahanta SP, Gogoi N. Phenolic oxime based receptors for selective detection of fluoride. RSC Adv 2015. [DOI: 10.1039/c5ra15460j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The possibilities to employ phenol and oxime functionalities as fluoride recognition motif are investigated. The recognition involves H-bonding followed by deprotonation.
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