1
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Yao Q, Yuan K, Li M, Zhao Y, Liu Y, Zhao X. Synergistic regulation of chloride anion recognition using a triple-functional sites receptor with two different cationic effectors. J Comput Chem 2024; 45:1630-1641. [PMID: 38539259 DOI: 10.1002/jcc.27357] [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: 12/08/2023] [Revised: 03/02/2024] [Accepted: 03/16/2024] [Indexed: 06/04/2024]
Abstract
The synergistic regulation of the multi-functional sites on one receptor molecule with different cationic effectors for anion recognition is scarce to be well understood from the experiment and theory. In this work, a new anion receptor with three functional zones including ether hole, biurea and double bipyridine groups (EUPR) is designed expecting to enhance the chloride anion recognition together with a rational synthesis path being proposed based on four simple and mature organic reaction steps. The conformational structures of the designed receptor EUPR and the binding behaviors for three kinds of ions (Cl-, Na+, and Ag+) are deeply investigated by using density functional theoretical calculations. It is found that Cl- binding via the hydrogen bond interaction can be significantly enhanced and synergistically regulated by the two kinds of cations and the corresponding conformational changes of receptor EUPR. Especially, the conformational pre-organization of receptor caused by the encapsulation of sodium ion into ether hole is benefit to the binding for Cl- in both thermodynamics and kinetics. Na+ binding, in turn, can ever be enhanced by chloride anion, whereas it seems that Ag+ binding cannot always be enhanced by chloride anion, reflecting an electrical complementary matching and mutual enhancement effect for different counter ions. Moreover, solvent effect calculations indicate that EUPR may be an ideal candidate structure for Cl- recognition by strategy of counter ion enhancement in water. Additionally, a visual study of intermolecular noncovalent interaction (NCI) and molecular electrostatic potential (ESP) are used for the analysis on the nature of interactions between receptor and bound ions.
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Affiliation(s)
- Qingqing Yao
- College of Chemical Engineering and Technology, Key Laboratory for New Molecule Materials Design and Function of Gansu Universities, Gansu Key Laboratory of Advanced Optoelectronic Functional Materials, Tianshui Normal University, Tianshui, China
| | - Kun Yuan
- College of Chemical Engineering and Technology, Key Laboratory for New Molecule Materials Design and Function of Gansu Universities, Gansu Key Laboratory of Advanced Optoelectronic Functional Materials, Tianshui Normal University, Tianshui, China
| | - Mengyang Li
- School of Physics, Xidian University, Xi'an, China
| | - Yaoxiao Zhao
- School of Materials Science and Chemical Engineering, Xi'an Technological University, Xi'an, China
| | - Yanzhi Liu
- College of Chemical Engineering and Technology, Key Laboratory for New Molecule Materials Design and Function of Gansu Universities, Gansu Key Laboratory of Advanced Optoelectronic Functional Materials, Tianshui Normal University, Tianshui, China
| | - Xiang Zhao
- School of Chemistry, Xi'an Jiaotong University, Xi'an, China
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2
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Paderni D, Macedi E, Giacomazzo GE, Formica M, Giorgi L, Valtancoli B, Rossi P, Paoli P, Conti L, Fusi V, Giorgi C. A new biphenol-dipicolylamine based ligand and its dinuclear Zn 2+ complex as fluorescent sensors for ibuprofen and ketoprofen in aqueous solution. Dalton Trans 2024; 53:9495-9509. [PMID: 38767612 DOI: 10.1039/d4dt00935e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
In this work, the study of the new ligand 3,3'-bis[N,N-bis(pyridine-2-ylmethyl)aminomethyl]-2,2'-dihydroxybiphenyl (L) is reported, where a central 2,2'-biphenol (BPH) fluorophore was functionalized at 3,3'-positions with two dipicolylamine (DPA) side arms as receptor units. Following the synthesis and full chemical-physical characterization, the acid-base and Zn2+-coordination abilities of L were investigated through a combination of potentiometric, UV-Vis, fluorescence, NMR, XRD and DFT measurements. The optical properties of the ligand turned out to be strongly dependent on the pH, being straightforwardly associated with the protonation state of the BPH moiety, whereas its peculiar design allowed to form stable mono and dinuclear Zn2+ complexes. In the latter species, the presence of two Zn2+ ions coordinatively unsaturated and placed at close distance to each other, prompted us to test their usefulness as metallo-receptors for two environmental pollutants of great relevance, ibuprofen and ketoprofen. Potentiometric and fluorescence investigations evidenced that these important non-steroidal anti-inflammatory drugs (NSAIDs) are effectively coordinated by the metallo-receptors and, of relevance, both the stability and the fluorescence properties of the resulting ternary adducts are markedly affected by the different chemical architectures of the two substrates. This study aims at highlighting the promising perspectives arising from the use of polyamino phenolic ligands as chemosensors for H+/Zn2+ and other additional anionic targets in their metal-complexed forms.
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Affiliation(s)
- Daniele Paderni
- Department of Pure and Applied Sciences, University of Urbino, via Ca' le Suore, 2-4, 61029 Urbino, Italy.
| | - Eleonora Macedi
- Department of Pure and Applied Sciences, University of Urbino, via Ca' le Suore, 2-4, 61029 Urbino, Italy.
| | - Gina Elena Giacomazzo
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, FI, Italy.
| | - Mauro Formica
- Department of Pure and Applied Sciences, University of Urbino, via Ca' le Suore, 2-4, 61029 Urbino, Italy.
| | - Luca Giorgi
- Department of Pure and Applied Sciences, University of Urbino, via Ca' le Suore, 2-4, 61029 Urbino, Italy.
| | - Barbara Valtancoli
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, FI, Italy.
| | - Patrizia Rossi
- Department of Industrial Engineering, University of Florence, via S. Marta 3, 50139 Florence, Italy
| | - Paola Paoli
- Department of Industrial Engineering, University of Florence, via S. Marta 3, 50139 Florence, Italy
| | - Luca Conti
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, FI, Italy.
| | - Vieri Fusi
- Department of Pure and Applied Sciences, University of Urbino, via Ca' le Suore, 2-4, 61029 Urbino, Italy.
| | - Claudia Giorgi
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, FI, Italy.
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3
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Malecka-Baturo K, Daniels M, Dehaen W, Radecka H, Radecki J, Grabowska I. Voltammetric Sensing of Chloride Based on a Redox-Active Complex: A Terpyridine-Co(II)-Dipyrromethene Functionalized Anion Receptor Deposited on a Gold Electrode. Molecules 2024; 29:2102. [PMID: 38731593 PMCID: PMC11085611 DOI: 10.3390/molecules29092102] [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: 03/07/2024] [Revised: 04/16/2024] [Accepted: 04/29/2024] [Indexed: 05/13/2024] Open
Abstract
A redox-active complex containing Co(II) connected to a terpyridine (TPY) and dipyrromethene functionalized anion receptor (DPM-AR) was created on a gold electrode surface. This host-guest supramolecular system based on a redox-active layer was used for voltammetric detection of chloride anions in aqueous solutions. The sensing mechanism was based on the changes in the redox activity of the complex observed upon binding of the anion to the receptor. The electron transfer coefficient (α) and electron transfer rate constant (k0) for the modified gold electrodes were calculated based on Cyclic Voltammetry (CV) experiments results. On the other hand, the sensing abilities were examined using Square Wave Voltammetry (SWV). More importantly, the anion receptor was selective to chloride, resulting in the highest change in Co(II) current intensity and allowing to distinguish chloride, sulfate and bromide. The proposed system displayed the highest sensitivity to Cl- with a limit of detection of 0.50 fM. The order of selectivity was: Cl- > SO42- > Br-, which was confirmed by the binding constants (K) and reaction coupling efficiencies (RCE).
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Affiliation(s)
- Kamila Malecka-Baturo
- Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Tuwima Street 10, 10-748 Olsztyn, Poland; (K.M.-B.); (H.R.)
| | - Mathias Daniels
- Sustainable Chemistry for Metals and Molecules, Department of Chemistry, KU Leuven, Leuven Chem&Tech, Celestijnenlaan 200F, B-3001 Leuven, Belgium (W.D.)
| | - Wim Dehaen
- Sustainable Chemistry for Metals and Molecules, Department of Chemistry, KU Leuven, Leuven Chem&Tech, Celestijnenlaan 200F, B-3001 Leuven, Belgium (W.D.)
| | - Hanna Radecka
- Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Tuwima Street 10, 10-748 Olsztyn, Poland; (K.M.-B.); (H.R.)
| | - Jerzy Radecki
- Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Tuwima Street 10, 10-748 Olsztyn, Poland; (K.M.-B.); (H.R.)
| | - Iwona Grabowska
- Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Tuwima Street 10, 10-748 Olsztyn, Poland; (K.M.-B.); (H.R.)
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4
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Gibb CD, Tran TH, Gibb BC. Assessing Weak Anion Binding to Small Peptides. J Phys Chem B 2024; 128:3605-3613. [PMID: 38592238 PMCID: PMC11033870 DOI: 10.1021/acs.jpcb.4c00657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 03/11/2024] [Accepted: 03/22/2024] [Indexed: 04/10/2024]
Abstract
Since Hofmeister's seminal studies in the late 19th century, it has been known that salts and buffers can drastically affect the properties of peptides and proteins. These Hofmeister effects can be conceived of in terms of three distinct phenomena/mechanisms: water-salt interactions that indirectly induce the salting-out of a protein by water sequestration by the salt, and direct salt-protein interactions that can either salt-in or salt-out the protein. Unfortunately, direct salt-protein interactions responsible for Hofmeister effects are weak and difficult to quantify. As such, they are frequently construed of as being nonspecific. Nevertheless, there has been considerable effort to better specify these interactions. Here, we use pentapeptides to demonstrate the utility of the H-dimension of nuclear magnetic resonance (NMR) spectroscopy to assess anion binding using N-H signal shifts. We qualify binding using these, demonstrating the upfield shifts induced by anion association and revealing how they are much larger than the corresponding downfield shifts induced by magnetic susceptibility and other ionic strength change effects. We also qualify binding in terms of how the pattern of signal shifts changes with point mutations. In general, we find that the observed upfield shifts are small compared with those induced by anion binding to amide-based hosts, and MD simulations suggest that this is so. Thus, charge-diffuse anions associate mostly with the nonpolar regions of the peptide rather than directly interacting with the amide N-H groups. These findings reveal the utility of 1H NMR spectroscopy for qualifying affinity to peptides─even when affinity constants are very low─and serve as a benchmark for using NMR spectroscopy to study anion binding to more complex systems.
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Affiliation(s)
- Corinne
L. D. Gibb
- Department of Chemistry, Tulane University School of Science and Engineering, New Orleans, Louisiana 70118, United States
| | - Thien H. Tran
- Department of Chemistry, Tulane University School of Science and Engineering, New Orleans, Louisiana 70118, United States
| | - Bruce C. Gibb
- Department of Chemistry, Tulane University School of Science and Engineering, New Orleans, Louisiana 70118, United States
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5
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Patrick SC, Beer PD, Davis JJ. Solvent effects in anion recognition. Nat Rev Chem 2024; 8:256-276. [PMID: 38448686 DOI: 10.1038/s41570-024-00584-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/25/2024] [Indexed: 03/08/2024]
Abstract
Anion recognition is pertinent to a range of environmental, medicinal and industrial applications. Recent progress in the field has relied on advances in synthetic host design to afford a broad range of potent recognition motifs and novel supramolecular structures capable of effective binding both in solution and at derived molecular films. However, performance in aqueous media remains a critical challenge. Understanding the effects of bulk and local solvent on anion recognition by host scaffolds is imperative if effective and selective detection in real-world media is to be viable. This Review seeks to provide a framework within which these effects can be considered both experimentally and theoretically. We highlight proposed models for solvation effects on anion binding and discuss approaches to retain strong anion binding in highly competitive (polar) solvents. The synthetic design principles for exploiting the aforementioned solvent effects are explored.
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Affiliation(s)
| | - Paul D Beer
- Department of Chemistry, University of Oxford, Oxford, UK
| | - Jason J Davis
- Department of Chemistry, University of Oxford, Oxford, UK.
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6
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Wilmore JT, Beer PD. Exploiting the Mechanical Bond Effect for Enhanced Molecular Recognition and Sensing. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2309098. [PMID: 38174657 DOI: 10.1002/adma.202309098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 12/20/2023] [Indexed: 01/05/2024]
Abstract
The ubiquity of charged species in biological and industrial processes has resulted in ever-increasing interest in their selective recognition, detection, and environmental remediation. Building on the established coordination chemistry principles of the chelate and macrocyclic effects, and host preorganization, supramolecular chemists seek to construct specific 3D binding cavities reminiscent of biotic systems to enhance host-guest binding affinity and selectivity. Mechanically interlocked molecules (MIMs) present a wholly unique platform for synthetic host design, wherein topologies afforded by the mechanical bond enable the decoration of 3D cavities for non-covalent interactions with a range of target guest geometries. Notably, MIM host systems exhibit mechanical bond effect augmented affinities and selectivities for a variety of charged guest species, compared to non-interlocked acyclic and macrocycle host analogs. Furthermore, the modular nature of MIM synthesis facilitates incorporation of optical and electrochemical reporter groups, enabling fabrication of highly sensitive and specific molecular sensors. This review discusses the development of recognition and sensing MIMs, from the first reports in the late 20th century through to the present day, delineating how their topologically preorganized and dynamic host cavities enhance charged guest recognition and sensing, demonstrating the mechanical bond effect as a potent tool in future chemosensing materials.
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Affiliation(s)
- Jamie T Wilmore
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Rd, Oxford, OX1 3TA, UK
| | - Paul D Beer
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Rd, Oxford, OX1 3TA, UK
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7
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Jurek P, Szymański MP, Szumna A. Remote control of anion binding by CH-based receptors. Chem Commun (Camb) 2024; 60:3417-3420. [PMID: 38441137 DOI: 10.1039/d3cc06038a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2024]
Abstract
We show that the substitution of tetra(benzimidazole)resorcin[4]arenes with electron withdrawing groups on the upper rim enhances anion binding at the opposite edge by more than three orders of magnitude. Moreover, selective anion binding at either the OH/NH or CH binding sites is demonstrated.
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Affiliation(s)
- Paulina Jurek
- Institute of Organic Chemistry Polish Academy of Sciences, Kasprzaka 44/52, Warsaw 01-224, Poland.
| | - Marek P Szymański
- Institute of Organic Chemistry Polish Academy of Sciences, Kasprzaka 44/52, Warsaw 01-224, Poland.
| | - Agnieszka Szumna
- Institute of Organic Chemistry Polish Academy of Sciences, Kasprzaka 44/52, Warsaw 01-224, Poland.
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8
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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: 0] [Impact Index Per Article: 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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9
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Goodwin RJ, White NG. Clever cryptand cage coordinates contaminants. Nat Chem 2024; 16:299-300. [PMID: 38365943 DOI: 10.1038/s41557-024-01459-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2024]
Affiliation(s)
- Rosemary J Goodwin
- Research School of Chemistry, Australian National University, Canberra, Australian Capital Territory, Australia
| | - Nicholas G White
- Research School of Chemistry, Australian National University, Canberra, Australian Capital Territory, Australia.
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10
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Gomez-Vega J, Vasquez-Cornejo A, Juárez-Sánchez O, Corona-Martínez DO, Ochoa-Terán A, López-Gastelum KA, Sotelo-Mundo RR, Santacruz-Ortega H, Gálvez-Ruiz JC, Pérez-González R, Lara KO. Thiourea-Based Receptors for Anion Recognition and Signaling. ACS OMEGA 2024; 9:4412-4422. [PMID: 38313514 PMCID: PMC10832000 DOI: 10.1021/acsomega.3c06861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Revised: 11/20/2023] [Accepted: 11/27/2023] [Indexed: 02/06/2024]
Abstract
This work reports on two thiourea-based receptors with pyridine and amine units including 1-naphthyl (MT1N) and 4-nytrophenyl (MT4N) as signaling units. For both compounds, their affinity and signaling ability toward various anions of different geometry and basicity in DMSO were studied using UV-vis, fluorescence, and 1H NMR techniques. Anion recognition studies revealed that both MT1N and MT4N have, in general, high affinities toward basic anions. In this regard, a higher acidity of the MT4N receptor was demonstrated. Furthermore, MT4N has a higher affinity for fluoride (log K1 = 5.98) than for the other anions and can effectively detect it through colorimetric changes that can be monitored by the UV-vis technique. The interaction between receptors and anions mainly involves the hydrogens of the amino and thiourea groups of the former. Complementary single-crystal X-ray diffraction studies and molecular modeling at the DFT level were also performed.
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Affiliation(s)
- Jancarlo Gomez-Vega
- Departamento
de Investigación en Polímeros y Materiales, Universidad de Sonora, Rosales y Encinas s/n, Col. Centro CP, 83000 Hermosillo, Sonora, Mexico
| | - Adrian Vasquez-Cornejo
- Departamento
de Investigación en Polímeros y Materiales, Universidad de Sonora, Rosales y Encinas s/n, Col. Centro CP, 83000 Hermosillo, Sonora, Mexico
| | - Octavio Juárez-Sánchez
- Departamento
de Investigación en Física, Universidad de Sonora, Rosales y Encinas s/n, Col. Centro CP, 83000 Hermosillo, Sonora, Mexico
| | - David O. Corona-Martínez
- Departamento
de Ciencias Químico Biológicas, Universidad de Sonora, Rosales y Encinas s/n, Col. Centro CP, 83000 Hermosillo, Sonora, Mexico
| | - Adrián Ochoa-Terán
- Centro
de Graduados e Investigación en Química, Instituto Tecnológico de Tijuana, Blvd. Industrial S/N CP, 22510 Tijuana, Baja California, Mexico
| | - Karla A. López-Gastelum
- Laboratorio
de Estructura Biomolecular, Centro de Investigación en Alimentación
y Desarrollo, A. C., Gustavo Enrique Astiazaran
Rosas, No. 46. CP, 83304 Hermosillo, Sonora, Mexico
| | - Rogerio R. Sotelo-Mundo
- Laboratorio
de Estructura Biomolecular, Centro de Investigación en Alimentación
y Desarrollo, A. C., Gustavo Enrique Astiazaran
Rosas, No. 46. CP, 83304 Hermosillo, Sonora, Mexico
| | - Hisila Santacruz-Ortega
- Departamento
de Investigación en Polímeros y Materiales, Universidad de Sonora, Rosales y Encinas s/n, Col. Centro CP, 83000 Hermosillo, Sonora, Mexico
| | - Juan Carlos Gálvez-Ruiz
- Departamento
de Ciencias Químico Biológicas, Universidad de Sonora, Rosales y Encinas s/n, Col. Centro CP, 83000 Hermosillo, Sonora, Mexico
| | - Refugio Pérez-González
- Departamento
de Investigación en Polímeros y Materiales, Universidad de Sonora, Rosales y Encinas s/n, Col. Centro CP, 83000 Hermosillo, Sonora, Mexico
| | - Karen Ochoa Lara
- Departamento
de Investigación en Polímeros y Materiales, Universidad de Sonora, Rosales y Encinas s/n, Col. Centro CP, 83000 Hermosillo, Sonora, Mexico
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11
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Haridas SV, von Delius M. Synthesis and supramolecular properties of all- cis-2,4,6-trifluorocyclohexane-1,3,5-triol. Chem Commun (Camb) 2024; 60:606-609. [PMID: 38099916 PMCID: PMC10783651 DOI: 10.1039/d3cc05510h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Accepted: 12/07/2023] [Indexed: 01/12/2024]
Abstract
We report the synthesis of all-cis fluorinated cyclohexanes bearing three hydroxy, ether or ester functionalities in the non-fluorinated positions. These tripodal molecules have a high dipole moment of up to 6.3 debye and were successfully used to bind anions and form gels.
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Affiliation(s)
- Shyamkumar V Haridas
- Institute of Organic Chemistry, Ulm University, Albert-Einstein-Allee 11, Ulm 89081, Germany.
| | - Max von Delius
- Institute of Organic Chemistry, Ulm University, Albert-Einstein-Allee 11, Ulm 89081, Germany.
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12
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Shen G, Zhong L, Liu G, Yang L, Wen X, Chen G, Zhao J, Hou C, Wang X. Synthesis of rare-earth metal-organic frameworks to construct high-resolution sensing array for multiplex anions detection, cell imaging and blood phosphorus monitoring. J Colloid Interface Sci 2023; 652:1925-1936. [PMID: 37690300 DOI: 10.1016/j.jcis.2023.09.010] [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: 07/06/2023] [Revised: 08/27/2023] [Accepted: 09/02/2023] [Indexed: 09/12/2023]
Abstract
Accurate detection and differentiation of multiple anions is still a difficult problem due to their wide variety, structural similarity, and mutual interference. Hence, four rare-earth metal-organic frameworks (RE-MOFs) including Dy-MOFs, Er-MOFs, Tb-MOFs and Y-MOFs are successfully prepared by using TCPP as the ligand and rare-earth ions as the metal center via coordination chelation. It is found that 7 anions can light up their fluorescence. Thus, a high-resolution sensing array based on RE-MOFs nanoprobes is employed to differentiate these anions from intricate analytes in real-time scenarios. The distinctive host-guest response promotes the RE-MOFs nanoprobes to selectively extract the target anions from the complex samples. By taking advantage of the cross-response between RE-MOFs nanoprobes and anions, it allows to create an array for detecting target analytes using pattern recognition. Additionally, RE-MOFs nanoprobes also facilitate the quantitative analysis of these anions (PO43-, H2PO4-, HPO42-, F-, S2-, CO32- and C2O42-). More importantly, the exceptional effectiveness of this method has been demonstrated through various successful applications, including quality monitoring of 8 toothpaste brands, intracellular phosphate imaging, and blood phosphorus detection in mice with vascular calcification. These findings provide robust evidence for the efficacy and reliability of the RE-MOFs nanoprobes array for anion recognition.
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Affiliation(s)
- Gongle Shen
- Wuxi School of Medicine, Jiangnan University, Wuxi 214122, PR China
| | - Linling Zhong
- Wuxi School of Medicine, Jiangnan University, Wuxi 214122, PR China
| | - Guizhu Liu
- Wuxi School of Medicine, Jiangnan University, Wuxi 214122, PR China
| | - Liu Yang
- Wuxi School of Medicine, Jiangnan University, Wuxi 214122, PR China
| | - Xin Wen
- Wuxi School of Medicine, Jiangnan University, Wuxi 214122, PR China
| | - Guanxi Chen
- Wuxi School of Medicine, Jiangnan University, Wuxi 214122, PR China
| | - Jiangqi Zhao
- College of Materials Science and Engineering, Sichuan University, Chengdu 610065, PR China
| | - Changjun Hou
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing 400044, PR China
| | - Xianfeng Wang
- Wuxi School of Medicine, Jiangnan University, Wuxi 214122, PR China; Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing 400044, PR China.
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13
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Novikov AP, Zagidullin KA, Volkov MA, German KE, Nevolin IM, Grigoriev MS. Influence of the organic cation on the formation of hexahalotechnetates: X-ray, thermal and comparative analyses of non-covalent interactions. Dalton Trans 2023; 52:17538-17547. [PMID: 37962484 DOI: 10.1039/d3dt03235c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Abstract
In this work, we have reviewed non-covalent interactions in technetium hexahalide compounds and obtained eight new compounds of the CatnTcHal6 type, where Cat = dimethylammonium, tetramethylammonium, caffeinium, benzothiazolium, nicotinamidium, and pyrazolium, and Hal = Cl, Br. SCXRD studies were carried out for new compounds. In some compounds, halide anions and/or crystallization water were present. In the compounds obtained, an essential influence on the formation of structures and crystal packing is exerted by the molecules of crystallization water and halide ions. Diethylammonium and nicotinamidium compounds, whose structures do not contain other ions and contain sufficiently strong non-covalent interactions, best bind hexahalotechnetates. π-Stacking interactions, anion-π interactions, and halogen bonds were found in the structures. The percentage contribution of the H⋯Hal/Hal⋯H interactions in the transition from fluorine to bromine in TcHal62- anions decreases, while the contribution of interactions of other types increases. The greatest variety of interactions in anions is observed for compounds of caffeinium and nicotinamidium with TcBr62-. The paper considers the processes of thermolysis of some new and previously known CatnTcHal6 compounds with various cations. It is shown that the thermal stability of the compounds is only due to the properties of the organic cation and does not depend on the nature of the halogen. The proposed stages of the process of thermolysis of the TcHal62- anion, accompanied by the reduction of technetium to metal, have been established.
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Affiliation(s)
- Anton P Novikov
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences (IPCE RAS), 31 Bldg 4, Leninsky prosp., Moscow, 119071, Russian Federation.
| | - Karim A Zagidullin
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences (IPCE RAS), 31 Bldg 4, Leninsky prosp., Moscow, 119071, Russian Federation.
| | - Mikhail A Volkov
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences (IPCE RAS), 31 Bldg 4, Leninsky prosp., Moscow, 119071, Russian Federation.
| | - Konstantin E German
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences (IPCE RAS), 31 Bldg 4, Leninsky prosp., Moscow, 119071, Russian Federation.
| | - Iurii M Nevolin
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences (IPCE RAS), 31 Bldg 4, Leninsky prosp., Moscow, 119071, Russian Federation.
| | - Mikhail S Grigoriev
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences (IPCE RAS), 31 Bldg 4, Leninsky prosp., Moscow, 119071, Russian Federation.
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14
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Salvadori K, Onali A, Mathez G, Eigner V, Dendisová M, Matějka P, Mullerová M, Brancale A, Cuřínová P. An Insight into Anion Extraction by Amphiphiles: Hydrophobic Microenvironments as a Requirement for the Extractant Selectivity. ACS OMEGA 2023; 8:44221-44228. [PMID: 38027376 PMCID: PMC10666219 DOI: 10.1021/acsomega.3c06767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 10/13/2023] [Accepted: 10/18/2023] [Indexed: 12/01/2023]
Abstract
Coupling of electron-deficient urea units with aliphatic chains gives rise to amphiphilic compounds that bind to phosphate and benzoate anions in the hydrogen bonding competitive solvent (DMSO) with KAss = 6 580 M-1 and KAss = 4 100 M-1, respectively. The anchoring of these receptor moieties to the dendritic support does not result in a loss of anion binding and enables new applications. Due to the formation of a microenvironment in the dendrimer, the high selectivity of the prepared compound toward benzoate is maintained even in the presence of aqueous media during extraction experiments. In the presence of binding sites at 5 mM concentration, the amount of benzoate corresponding to the full binding site occupancy is transferred into the chloroform phase from its 10 mM aqueous solution. A thorough investigation of the extraction behavior of the dendrimer reported here, supported by a series of molecular dynamics simulations, provides new insight into the fundamental principles of extraction of inorganic anions by amphiphiles.
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Affiliation(s)
- Karolína Salvadori
- Department
of Physical Chemistry, University of Chemistry
and Technology Prague, Technická 5, Prague 6 16628, Czech Republic
- Department
of Bioorganic Chemistry and Biomaterials, Institute of Chemical Process Fundamentals of the CAS, v.v.i., Rozvojová 135, Prague 6 16502, Czech Republic
| | - Alessia Onali
- Department
of Organic Chemistry, University of Chemistry
and Technology Prague, Technická 5, Prague 6 16628, Czech Republic
| | - Gregory Mathez
- Department
of Organic Chemistry, University of Chemistry
and Technology Prague, Technická 5, Prague 6 16628, Czech Republic
| | - Václav Eigner
- Department
of Solid-State Chemistry, University of
Chemistry and Technology Prague, Technická 5, Prague 6 16628, Czech Republic
| | - Marcela Dendisová
- Department
of Physical Chemistry, University of Chemistry
and Technology Prague, Technická 5, Prague 6 16628, Czech Republic
| | - Pavel Matějka
- Department
of Physical Chemistry, University of Chemistry
and Technology Prague, Technická 5, Prague 6 16628, Czech Republic
| | - Monika Mullerová
- Department
of Bioorganic Chemistry and Biomaterials, Institute of Chemical Process Fundamentals of the CAS, v.v.i., Rozvojová 135, Prague 6 16502, Czech Republic
| | - Andrea Brancale
- Department
of Organic Chemistry, University of Chemistry
and Technology Prague, Technická 5, Prague 6 16628, Czech Republic
| | - Petra Cuřínová
- Department
of Organic Chemistry, University of Chemistry
and Technology Prague, Technická 5, Prague 6 16628, Czech Republic
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15
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Dong S, Yu Z, Guo L, Yang Y, Tu C, Krishna R, Luo F. Neutral MOF Anion Receptor: Radical-Promoted Precise Anion Recognition. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2304054. [PMID: 37469243 DOI: 10.1002/smll.202304054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 07/10/2023] [Indexed: 07/21/2023]
Abstract
Precise ion recognition plays a key role in the anionic decontamination in water. However, the established anionic recognition based on neutral or cationic anion receptor is still restricted by the inherent limitation, such as narrow application scope in organic solvent rather than water for neutral anion receptor and poor selectivity due to non-directional electrostatic interaction for cationic anion receptor. Herein, for the first time, a neutral metal-organic framework (MOF) anion receptor is shown, enabling precise anion recognition, for example, the presence of a variety of 1000-fold competitive anions does not affect the selective adsorption of the target anion at all. A radical-dominating anion-recognition mechanism is proposed for rationalizing the efficacy of the neutral MOF.
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Affiliation(s)
- Shuyu Dong
- School of Chemistry, Biology and Materials Science, East China University of Technology, Nanchang, 330013, P. R. China
| | - Zhiwu Yu
- High Magnetic Field Laboratory Chinese Academy of Sciences Hefei, Hefei, Anhui, 230031, P. R. China
| | - Liecheng Guo
- School of Chemistry, Biology and Materials Science, East China University of Technology, Nanchang, 330013, P. R. China
| | - Yuting Yang
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing, 655011, P. R. China
| | - Changzheng Tu
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing, 655011, P. R. China
| | - Rajamani Krishna
- Van't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, Amsterdam, 1098 XH, The Netherlands
| | - Feng Luo
- School of Chemistry, Biology and Materials Science, East China University of Technology, Nanchang, 330013, P. R. China
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16
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Zavalishin MN, Gamov GA, Kiselev AN, Aleksandriiskii VV, Medvedeva AS. Vitamin B 6-based fluorescence chemosensor for selective detection of F - ions: design, synthesis, and characterization. Photochem Photobiol Sci 2023; 22:2483-2497. [PMID: 37747667 DOI: 10.1007/s43630-023-00463-9] [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: 05/18/2023] [Accepted: 07/18/2023] [Indexed: 09/26/2023]
Abstract
The present paper reports on the synthesis and characterization of a new chemosensor for fluoride ions, a hydrazone derived from pyridoxal 5'-phosphate and benzothiazole. The structure of the chemosensor was confirmed using 1H and 13C NMR, FT-IR and mass spectroscopy. The conformational diversity of the chemosensor influencing the sensor activity was studied by the quantum chemistry methods on the B3LYP/6-311++G(d, p) (H, C, N, O, P, S) level, and the optimal structure of the chemosensor was chosen. The selective capability of detecting F- in the aqueous solution, which also contains Cl-, Br-, I-, NCS-, ClO4-, HSO4-, and NO3- was demonstrated. The detection limit (LOD) for fluoride ions was 0.22 µM as determined by the 3σ method. The turn-on effect in the presence of fluoride ions is based on the deprotonation of the chemosensor and its subsequent aggregation in DMSO. In addition, the chemosensor was used for the detection and estimation of F- in real samples using fluorescence spectroscopy.
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Affiliation(s)
- M N Zavalishin
- Research Institute of Thermodynamics and Kinetics of Chemical Processes, Ivanovo State University of Chemistry and Technology, Sheremetevskii Pr. 7, 153000, Ivanovo, Russia.
| | - G A Gamov
- Research Institute of Thermodynamics and Kinetics of Chemical Processes, Ivanovo State University of Chemistry and Technology, Sheremetevskii Pr. 7, 153000, Ivanovo, Russia
| | - A N Kiselev
- Research Institute of Thermodynamics and Kinetics of Chemical Processes, Ivanovo State University of Chemistry and Technology, Sheremetevskii Pr. 7, 153000, Ivanovo, Russia
| | - V V Aleksandriiskii
- Research Institute of Thermodynamics and Kinetics of Chemical Processes, Ivanovo State University of Chemistry and Technology, Sheremetevskii Pr. 7, 153000, Ivanovo, Russia
| | - A S Medvedeva
- Research Institute of Thermodynamics and Kinetics of Chemical Processes, Ivanovo State University of Chemistry and Technology, Sheremetevskii Pr. 7, 153000, Ivanovo, Russia
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17
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Butler SM, Hountondji M, Berry SN, Tan J, Macia L, Jolliffe KA. A macrocyclic fluorescent probe for the detection of citrate. Org Biomol Chem 2023; 21:8548-8553. [PMID: 37846461 DOI: 10.1039/d3ob01442h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2023]
Abstract
We present a macrocyclic fluorescent probe for the detection of citrate. This receptor binds citrate through hydrogen-bonding interactions in aqueous solutions, and exhibits a turn-on in fluorescence in response to binding. The presence of common biologically relevant dicarboxylate species does not significantly impact the fluorescence response. We have demonstrated the utility of this probe with the staining of murine splenocytes, and identified different basal levels of citrate present in immune cell subsets via flow cytometry analysis.
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Affiliation(s)
- Stephen M Butler
- School of Chemistry, The University of Sydney, NSW, 2006, Australia.
- Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, The University of Sydney, 2006, NSW, Australia
| | - Maria Hountondji
- School of Chemistry, The University of Sydney, NSW, 2006, Australia.
- Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, The University of Sydney, 2006, NSW, Australia
| | - Stuart N Berry
- School of Chemistry, The University of Sydney, NSW, 2006, Australia.
| | - Jian Tan
- The Charles Perkins Centre, The University of Sydney, NSW 2006, Australia
- School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, NSW 2006, Australia
| | - Laurence Macia
- The Charles Perkins Centre, The University of Sydney, NSW 2006, Australia
- School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, NSW 2006, Australia
- Sydney Cytometry, The University of Sydney, NSW 2006, Australia
| | - Katrina A Jolliffe
- School of Chemistry, The University of Sydney, NSW, 2006, Australia.
- Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, The University of Sydney, 2006, NSW, Australia
- The University of Sydney Nano Institute (Sydney Nano), The University of Sydney, NSW 2006, Australia
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18
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Wagay SA, Ali R. Facile synthesis and anion binding studies of fluorescein/benzo-12-crown-4 ether based bis-dipyrromethane (DPM) receptors. RSC Adv 2023; 13:30420-30428. [PMID: 37849701 PMCID: PMC10578460 DOI: 10.1039/d3ra05171d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 10/10/2023] [Indexed: 10/19/2023] Open
Abstract
Two novel fluorescein as well as benzo-12-crown-4 ether functionalized dipyrromethane receptors (DPM3 and DPM4) have successfully been synthesized. The anion (used as their TBA salts) binding studies of thus prepared DPM3 and DPM4 receptors were evaluated by the UV-visible spectrophotometric titrations. Binding affinities as well as the stoichiometry were determined through the UV-visible titrations data with the involvement of the BindFit (v0.5) package available online at https://supramolecular.org. Moreover, binding events were validated by means of the comparison of the partial 1H-NMR spectrum of the simple host molecule with that of the host-guest complex, and the 1 : 1 stoichiometry were further confirmed by the Job's method of continuous variation. From the results, we observed the binding constant (Ka) values of DPM3/DPM4 with various tested anions in the range of 516.07 M-1 to 63789.81 M-1, depending upon the nature/shape/size of the anions. Moreover, the anion-π interactions were confirmed by the partial 1H-NMR spectral data, and further supported by the literature reported systems. The authors hope that such types of valued receptors will be benefitted in future for the recognizing/binding of a variety of biologically important anions.
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Affiliation(s)
- Shafieq Ahmad Wagay
- Organic and Supramolecular Functional Materials Research Laboratory, Department of Chemistry Jamia Millia Islamia, Okhla New Delhi 110025 India +91-7011867613
| | - Rashid Ali
- Organic and Supramolecular Functional Materials Research Laboratory, Department of Chemistry Jamia Millia Islamia, Okhla New Delhi 110025 India +91-7011867613
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19
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Weiße A, Seichter W, Mazik M. Supramolecular Motifs in the Crystal Structures of Triethylbenzene Derivatives Bearing Pyridinium Subunits in Combination with Pyrimidinyl or Pyridinyl Groups. Molecules 2023; 28:6485. [PMID: 37764259 PMCID: PMC10535844 DOI: 10.3390/molecules28186485] [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: 07/09/2023] [Revised: 08/13/2023] [Accepted: 08/23/2023] [Indexed: 09/29/2023] Open
Abstract
A series of mono- and dicationic 1,3,5-trisubstituted 2,4,6-triethylbenzenes containing pyridinium groups in combination with aminopyrimidine-/aminopyridine-based recognition units were synthesized and crystallographically studied. The combination of neutral and ionic building blocks represents a promising strategy for the development of effective and selective artificial receptors for anionic substrates. In the crystalline state, the investigated compounds show a tendency to bind the counterion PF6- in the cavity formed by the three functionalized side-arms. The intermolecular interactions with the PF6- ion comprise N-H∙∙∙F and C-H∙∙∙F bonds. Detailed analysis of various supramolecular motifs, including interactions with solvent molecules, provides deeper insights into the processes of molecular recognition. The information obtained is useful in the development of new receptor molecules for anions and in the selection of the most appropriate counterion.
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Affiliation(s)
| | | | - Monika Mazik
- Institut für Organische Chemie, Technische Universität Bergakademie Freiberg, Leipziger Straße 29, 09596 Freiberg, Germany; (A.W.); (W.S.)
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20
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Assaf KI, Nau WM. Large anion binding in water. Org Biomol Chem 2023; 21:6636-6651. [PMID: 37548417 DOI: 10.1039/d3ob00975k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/08/2023]
Abstract
Large water-soluble anions with chaotropic character display surprisingly strong supramolecular interactions in water, for example, with macrocyclic receptors, polymers, biomembranes, and other hydrophobic cavities and interfaces. The high affinity is traced back to a hitherto underestimated driving force, the chaotropic effect, which is orthogonal to the common hydrophobic effect. This review focuses on the binding of large anions with water-soluble macrocyclic hosts, including cyclodextrins, cucurbiturils, bambusurils, biotinurils, and other organic receptors. The high affinity of large anions to molecular receptors has been implemented in several lines of new applications, which are highlighted herein.
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Affiliation(s)
- Khaleel I Assaf
- Constructor University, School of Science, Campus Ring 1, 28759 Bremen, Germany.
- Department of Chemistry, Faculty of Science, Al-Balqa Applied University, 19117 Al-Salt, Jordan.
| | - Werner M Nau
- Constructor University, School of Science, Campus Ring 1, 28759 Bremen, Germany.
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21
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Ong WSY, Ji K, Pathiranage V, Maydew C, Baek K, Villones RLE, Meloni G, Walker AR, Dodani SC. Rational Design of the β-Bulge Gate in a Green Fluorescent Protein Accelerates the Kinetics of Sulfate Sensing. Angew Chem Int Ed Engl 2023; 62:e202302304. [PMID: 37059690 PMCID: PMC10330437 DOI: 10.1002/anie.202302304] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 04/11/2023] [Accepted: 04/12/2023] [Indexed: 04/16/2023]
Abstract
Detection of anions in complex aqueous media is a fundamental challenge with practical utility that can be addressed by supramolecular chemistry. Biomolecular hosts such as proteins can be used and adapted as an alternative to synthetic hosts. Here, we report how the mutagenesis of the β-bulge residues (D137 and W138) in mNeonGreen, a bright, monomeric fluorescent protein, unlocks and tunes the anion preference at physiological pH for sulfate, resulting in the turn-off sensor SulfOFF-1. This unprecedented sensing arises from an enhancement in the kinetics of binding, largely driven by position 138. In line with these data, molecular dynamics (MD) simulations capture how the coordinated entry and gating of sulfate into the β-barrel is eliminated upon mutagenesis to facilitate binding and fluorescence quenching.
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Affiliation(s)
- Whitney S. Y. Ong
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, 800 W. Campbell Road, Richardson, Texas 75080-3021, USA
| | - Ke Ji
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, 800 W. Campbell Road, Richardson, Texas 75080-3021, USA
| | - Vishaka Pathiranage
- Department of Chemistry, Wayne State University, 42 W. Warren Ave. Detroit, MI 48202, USA
| | - Caden Maydew
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, 800 W. Campbell Road, Richardson, Texas 75080-3021, USA
| | - Kiheon Baek
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, 800 W. Campbell Road, Richardson, Texas 75080-3021, USA
| | - Rhiza Lyne E. Villones
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, 800 W. Campbell Road, Richardson, Texas 75080-3021, USA
| | - Gabriele Meloni
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, 800 W. Campbell Road, Richardson, Texas 75080-3021, USA
| | - Alice R. Walker
- Department of Chemistry, Wayne State University, 42 W. Warren Ave. Detroit, MI 48202, USA
| | - Sheel C. Dodani
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, 800 W. Campbell Road, Richardson, Texas 75080-3021, USA
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22
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Bąk KM, Patrick SC, Li X, Beer PD, Davis JJ. Engineered Binding Microenvironments in Halogen Bonding Polymers for Enhanced Anion Sensing. Angew Chem Int Ed Engl 2023; 62:e202300867. [PMID: 36749115 PMCID: PMC10946961 DOI: 10.1002/anie.202300867] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 02/07/2023] [Accepted: 02/07/2023] [Indexed: 02/08/2023]
Abstract
Mimicking Nature's polymeric protein architectures by designing hosts with binding cavities screened from bulk solvent is a promising approach to achieving anion recognition in competitive media. Accomplishing this, however, can be synthetically demanding. Herein we present a synthetically tractable approach, by directly incorporating potent supramolecular anion-receptive motifs into a polymeric scaffold, tuneable through a judicious selection of the co-monomer. A comprehensive analysis of anion recognition and sensing is demonstrated with redox-active, halogen bonding polymeric hosts. Notably, the polymeric hosts consistently outperform their monomeric analogues, with especially large halide binding enhancements of ca. 50-fold observed in aqueous-organic solvent mixtures. These binding enhancements are rationalised by the generation and presentation of low dielectric constant binding microenvironments from which there is appreciable solvent exclusion.
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Affiliation(s)
- Krzysztof M. Bąk
- Department of ChemistryUniversity of OxfordSouth Parks RoadOxfordOX1 3QZUK
| | - Sophie C. Patrick
- Department of ChemistryUniversity of OxfordSouth Parks RoadOxfordOX1 3QZUK
| | - Xiaoxiong Li
- Department of ChemistryUniversity of OxfordSouth Parks RoadOxfordOX1 3QZUK
| | - Paul D. Beer
- Department of ChemistryUniversity of OxfordSouth Parks RoadOxfordOX1 3QZUK
| | - Jason J. Davis
- Department of ChemistryUniversity of OxfordSouth Parks RoadOxfordOX1 3QZUK
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23
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Rashid A, Mondal S, Ghosh P. Iridium(III) complex of fluorinated cyclometalating ligands and imidazolium-bipyridine as an effective lifetime based phosphates sensor. Inorganica Chim Acta 2023. [DOI: 10.1016/j.ica.2023.121453] [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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24
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Sudan S, Chen DW, Berton C, Fadaei-Tirani F, Severin K. Synthetic Receptors with Micromolar Affinity for Chloride in Water. Angew Chem Int Ed Engl 2023; 62:e202218072. [PMID: 36628647 DOI: 10.1002/anie.202218072] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 01/09/2023] [Accepted: 01/10/2023] [Indexed: 01/12/2023]
Abstract
A water-soluble coordination cage was obtained by reaction of Pd(NO3 )2 with a 1,3-di(pyridin-3-yl)benzene ligand featuring a short PEG chain. The cavity of the metal-organic cage contains one nitrate anion, which is readily replaced by chloride. The apparent association constant for chloride binding in buffered aqueous solution is Ka =1.8(±0.1)×105 M-1 . This value is significantly higher than what has been reported for other macrocyclic chloride receptors. The heavier halides Br- and I- compete with binding or self-assembly, but the receptor displays very good selectivity over common anions such as phosphate, acetate, carbonate, and sulfate. A further increase of the chloride binding affinity by a factor of 3 was achieved using a fluorinated dipyridyl ligand.
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Affiliation(s)
- Sylvain Sudan
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| | - Damien W Chen
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| | - Cesare Berton
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| | - Farzaneh Fadaei-Tirani
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| | - Kay Severin
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
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25
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Biswas R, Banerjee S. Luminescence Sensing of Biomacromolecules Heparin and Protamine in 100% Human Serum and Plasma by Supramolecular Polymeric Assemblies. Biomacromolecules 2023; 24:766-774. [PMID: 36627763 DOI: 10.1021/acs.biomac.2c01219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Heparin, an anionic biomacromolecule, is routinely used as an anticoagulant during medical surgery to prevent blood clot formation and in the treatment of several heart, lung, and circulatory disorders having a higher risk of blood clotting. We herein report supramolecular polymeric nanoassemblies of cationic pyrene-tagged bis-imidazolium amphiphiles for heparin detection with high sensitivity and selectivity in aqueous buffer, plasma, and serum media. The nano-assemblies exhibited cyan-green excimeric emission in aqueous media, and their multivalent array of positive surface charges allowed them to form co-assemblies with heparin, resulting in significantly enhanced emission. This provided a convenient method for heparin detection in buffer at nanomolar concentrations, and most notably, a ratiometric fluorescence response was obtained even in highly competitive 100% human serum and 100% human plasma in a clinically relevant concentration range. Moreover, using the heparin-based luminescent co-assemblies, protamine sulfate, a clinically administered antidote to heparin, was also detected in 100% human serum and 100% human plasma at sub-micromolar concentrations.
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Affiliation(s)
- Rakesh Biswas
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Nadia, Mohanpur 741246, India
| | - Supratim Banerjee
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Nadia, Mohanpur 741246, India
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26
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Kataev EA. Converting pH probes into "turn-on" fluorescent receptors for anions. Chem Commun (Camb) 2023; 59:1717-1727. [PMID: 36722999 DOI: 10.1039/d2cc06194e] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Recognition of anions by synthetic receptors is an integral part of supramolecular chemistry continuing to expand and find new application areas in our daily life. Many applications require visualization of anion recognition events, and the generated analytical signal is used to quantify anions in solution. Transferring a binding event to a measured signal is a challenging task. The design of a synthetic receptor must involve not only the perfectly positioned binding sites with complementary noncovalent interactions for a guest but should also realize the sensing mechanism that generates a strong analytical response upon guest binding. This feature article outlines the design concept for the construction of "turn-on" fluorescent receptors for anions involving fluorescent pH probes. Applications of this concept for the construction of synthetic fluorescent receptors for inorganic anions and nucleotides are described. Features of the obtained receptors and possible competing binding and sensing processes in solution are analyzed to understand the scope and limitations of the approach.
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Affiliation(s)
- Evgeny A Kataev
- Department of Chemistry and Pharmacy, University of Erlangen-Nürnberg, Nikolaus-Fiebiger-Str. 10, 91058 Erlangen, Germany.
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27
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Alexander C, Thom JA, Kenwright AM, Christensen KE, Sørensen TJ, Faulkner S. Chelating chloride using binuclear lanthanide complexes in water. Chem Sci 2023; 14:1194-1204. [PMID: 36756316 PMCID: PMC9891377 DOI: 10.1039/d2sc05417e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Accepted: 12/27/2022] [Indexed: 12/28/2022] Open
Abstract
Halide recognition by supramolecular receptors and coordination complexes in water is a long-standing challenge. In this work, we report chloride binding in water and in competing media by pre-organised binuclear kinetically inert lanthanide complexes, bridged by flexible -(CH2)2- and -(CH2)3- spacers, forming [Ln2(DO3A)2C-2] and [Ln2(DO3A)2C-3], respectively. These hydrophilic, neutral lanthanide coordination complexes are shown to bind chloride with apparent association constants of up to 105 M-1 in water and in buffered systems. Hydroxide bridging was observed in these complexes at basic pH, which was proven to be overcome by chloride. Thus, these lanthanide complexes show promise towards chloride recognition in biology and beyond. The results described here have clearly identified a new area of anion coordination chemistry that is ripe for detailed exploration.
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Affiliation(s)
- Carlson Alexander
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford 12 Mansfield Road Oxford OX1 3TA UK
| | - James A Thom
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford 12 Mansfield Road Oxford OX1 3TA UK
| | - Alan M Kenwright
- Department of Chemistry, University of Durham South Road Durham DH1 3LE UK
| | - Kirsten E Christensen
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford 12 Mansfield Road Oxford OX1 3TA UK
| | - Thomas Just Sørensen
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford 12 Mansfield Road Oxford OX1 3TA UK
- Nano-Science Centre and Department of Chemistry, University of Copenhagen 2100 København Ø Denmark
| | - Stephen Faulkner
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford 12 Mansfield Road Oxford OX1 3TA UK
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28
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Fan D, Du J, Dang J, Wang C, Mo Y. The strength and selectivity of perfluorinated nano-hoops and buckybowls for anion binding and the nature of anion-π interactions. J Comput Chem 2023; 44:138-148. [PMID: 35147229 DOI: 10.1002/jcc.26820] [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: 11/12/2021] [Revised: 01/17/2022] [Accepted: 01/21/2022] [Indexed: 12/31/2022]
Abstract
Perfluorinated cycloparaphenylenes (F-[n]CPP, n = 5-8), boron nitride nanohoop (F-[5]BNNH), and buckybowls (F-BBs) were proposed as anion receptors via anion-π interactions with halide anions (Cl- , Br- and I- ), and remarkable binding strengths up to -294.8 kJ/mol were computationally verified. The energy decomposition approach based on the block-localized wavefunction method, which combines the computational efficiency of molecular orbital theory and the chemical intuition of ab initio valence bond theory, was applied to the above anion-π complexes, in order to elucidate the nature and selectivity of these interactions. The overall attraction is mainly governed by the frozen energy component, in which the electrostatic interaction is included. Remarkable binding strengths with F-[n]CPPs can be attributed to the accumulated anion-π interactions between the anion and each conjugated ring on the hoop, while for F-BBs, additional stability results from the curved frameworks, which distribute electron densities unequally on π-faces. Interestingly, the strongest host was proved to be the F-[5]BNNH, which exhibits the most significant anisotropy of the electrostatic potential surface due to the difference in the electronegativities of nitrogen and boron. The selectivity of each host for anions was explored and the importance of the often-overlooked Pauli exchange repulsion was illustrated. Chloride anion turns out to be the most favorable anion for all receptors, due to the smallest ionic radius and the weakest destabilizing Pauli exchange repulsion.
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Affiliation(s)
- Dan Fan
- Key Laboratory for Macromolecular Science of Shaanxi Province, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi'an, China
| | - Juan Du
- Key Laboratory for Macromolecular Science of Shaanxi Province, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi'an, China
| | - Jingshuang Dang
- Key Laboratory for Macromolecular Science of Shaanxi Province, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi'an, China
| | - Changwei Wang
- Key Laboratory for Macromolecular Science of Shaanxi Province, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi'an, China
| | - Yirong Mo
- Department of Nanoscience, Joint School of Nanoscience and Nanoengineering, University of North Carolina at Greensboro, Greensboro, North Carolina, USA
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29
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Development and Application of Ruthenium(II) and Iridium(III) Based Complexes for Anion Sensing. Molecules 2023; 28:molecules28031231. [PMID: 36770897 PMCID: PMC9920910 DOI: 10.3390/molecules28031231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 01/18/2023] [Accepted: 01/20/2023] [Indexed: 01/31/2023] Open
Abstract
Improvements in the design of receptors for the detection and quantification of anions are desirable and ongoing in the field of anion chemistry, and remarkable progress has been made in this direction. In this regard, the development of luminescent chemosensors for sensing anions is an imperative and demanding sub-area in supramolecular chemistry. This decade, in particular, witnessed advancements in chemosensors based on ruthenium and iridium complexes for anion sensing by virtue of their modular synthesis and rich chemical and photophysical properties, such as visible excitation wavelength, high quantum efficiency, high luminescence intensity, long lifetimes of phosphorescence, and large Stokes shifts, etc. Thus, this review aims to summarize the recent advances in the development of ruthenium(II) and iridium(III)-based complexes for their application as luminescent chemosensors for anion sensing. In addition, the focus was devoted to designing aspects of polypyridyl complexes of these two transition metals with different recognition motifs, which upon interacting with different inorganic anions, produces desirable quantifiable outputs.
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30
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Macedi E, Giorgi L, Formica M, Rossi P, Paderni D, Paoli P, Fusi V. A Tetranuclear Copper(II)/Calcium(II) Complex as Dual Chemosensor for Colorimetric and Fluorescent Detection of Non-Steroidal Anti-Inflammatory Drugs. Chempluschem 2023; 88:e202200364. [PMID: 36658696 DOI: 10.1002/cplu.202200364] [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: 10/18/2022] [Revised: 01/04/2023] [Indexed: 01/06/2023]
Abstract
The tetranuclear Cu2+ /Ca2+ /Ca2+ /Cu2+ complex based on Malten ligand has been investigated as a platform for anion binding. Simple organic carboxylates and non-steroidal anti-inflammatory drugs (NSAIDs) have been tested, revealing the ability of the platform to bind them. The receiving platform hosts at least two guests in solution although a third anion can be bound, as suggested by X-ray diffraction analysis. The addition of the anions is accompanied by a color change of the solution, making the system a colorimetric sensor for carboxylates (LOD values comprised between 3.6 and 20.7 ppm). A fluorescent system consisting of the 2-(3-oxido-6-oxoxanthen-9-yl)benzoate (fluorescein anion) linked to the tetranuclear platform has been also prepared and used in a chemosensing ensemble approach to signal the presence of the selected anions (Log K between 2.6 and 5.6 for the addition of two guests). The latter also works in a paper strip test, offering the chemosensor a possible practical application.
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Affiliation(s)
- Eleonora Macedi
- Department of Pure and Applied Sciences, University of Urbino "Carlo Bo", Via della Stazione 4, 61029, Urbino, Italy
| | - Luca Giorgi
- Department of Pure and Applied Sciences, University of Urbino "Carlo Bo", Via della Stazione 4, 61029, Urbino, Italy
| | - Mauro Formica
- Department of Pure and Applied Sciences, University of Urbino "Carlo Bo", Via della Stazione 4, 61029, Urbino, Italy
| | - Patrizia Rossi
- Department of Industrial Engineering, University of Florence, via S. Marta 3, 50139, Florence, Italy
| | - Daniele Paderni
- Department of Pure and Applied Sciences, University of Urbino "Carlo Bo", Via della Stazione 4, 61029, Urbino, Italy
| | - Paola Paoli
- Department of Industrial Engineering, University of Florence, via S. Marta 3, 50139, Florence, Italy
| | - Vieri Fusi
- Department of Pure and Applied Sciences, University of Urbino "Carlo Bo", Via della Stazione 4, 61029, Urbino, Italy
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31
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Naithani S, Goswami T, Thetiot F, Kumar S. Imidazo[4,5-f][1,10]phenanthroline based luminescent probes for anion recognition: Recent achievements and challenges. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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32
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Antonio A, Dworzak MR, Korman KJ, Yap GPA, Bloch ED. Anion Binding as a Strategy for the Synthesis of Porous Salts. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2022; 34:10823-10831. [PMID: 36590703 PMCID: PMC9799027 DOI: 10.1021/acs.chemmater.2c01476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 10/25/2022] [Indexed: 06/17/2023]
Abstract
Porous salts have recently emerged as a promising new class of ultratunable permanently microporous solids. These adsorbents, which were first reported as ionic solids based on porous cations and anions, can be isolated from a wide variety of charged, permanently porous coordination cages. A challenge in realizing the full tunability of such systems, however, lies in the fact that the majority of coordination cages for which surface areas have been reported are comprised of charge-balanced inorganic and organic building blocks that result in neutral cages. As such, most reported permanently porous coordination cages cannot be used as reagents in the synthesis of porous salts. Here, we show that the facile reaction of TBAX (TBA+ = tetra-n-butylammonium; X = F- and Cl-) with molybdenum paddlewheel-based coordination cages of the M4L4 and M24L24 lantern and cuboctahedra structure types, respectively, affords charged cages by virtue of coordination of halide anions to the internal and/or external metal sites on these structures, as confirmed by single-crystal X-ray diffraction, X-ray photoelectron spectroscopy, and nuclear magnetic resonance (NMR) spectroscopy. At a practical level, the TBAX/cage reactions, which are fully reversible upon isolation of the cage with the appropriate solvent, solubilize otherwise rigorously insoluble cages. This method significantly increases the solution processability of these highly porous solids. Toward the formation of new porous salts, halide binding also serves to incorporate charge on neutral cages and make them amenable to simple salt metathesis reactions to afford new porous salts based on anions and cations with intrinsic porosity. A combination of diffraction methods and a suite of spectroscopic tools confirms speciation of the isolated solids, which represent a new class of highly tunable porous salts. Ultimately, this work represents a roadmap for the preparation of new porous solids and showcases the utility and broad applicability of anion binding as a strategy for the synthesis of porous salts.
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33
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Kerckhoffs A, Moss I, Langton MJ. Photo-switchable anion binding and catalysis with a visible light responsive halogen bonding receptor. Chem Commun (Camb) 2022; 59:51-54. [PMID: 36440635 DOI: 10.1039/d2cc05199k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Photo-switchable receptors allow for photo-control over guest binding and release with spatial and temporal precision. Here we report the first halogen bonding photo-switchable anion receptors in which chloride binding may be reversibly modulated by irradiation with red and blue light, with over a 50-fold enhancement in chloride binding affinity observed for the Z isomer. We demonstrate that this switchable binding enables unprecedented photo-controlled catalysis of XB-mediated halide abstractions and a Mukaiyama Aldol reaction.
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Affiliation(s)
- Aidan Kerckhoffs
- Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA, UK.
| | - Isabelle Moss
- Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA, UK.
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34
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Tobolska A, Głowacz K, Ciosek-Skibińska P, Bal W, Wróblewski W, Wezynfeld NE. Dual mode of voltammetric studies on Cu(II) complexes of His2 peptides: phosphate and peptide sequence recognition. Dalton Trans 2022; 51:18143-18151. [PMID: 36385190 DOI: 10.1039/d2dt03078k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Copper(II) complexes of peptides with a histidine residue at the second position (His2 peptides) provide a unique profile of electrochemical behavior, offering signals of both Cu(II) reduction and Cu(II) oxidation. Furthermore, their structures with vacant positions in the equatorial coordination plane could facilitate interactions with other biomolecules. In this work, we designed a library of His2 peptides based on the sequence of Aβ5-9 (RHDSG), an amyloid beta peptide derivative. The changes in the Aβ5-9 sequence highly affect the Cu(II) oxidation signals, altered further by anionic species. As a result, Cu(II) complexes of Arg1 peptides without Asp residues were chosen as the most promising peptide-based molecular receptors for phosphates. The voltammetric data on Cu(II) oxidation for binary Cu(II)-His2 peptide complexes and ternary Cu(II)-His2 peptide/phosphate systems were also tested for His2 peptide recognition. We achieved a highly promising identification of subtle modifications in the peptide sequence. Thus, we introduce voltammetric measurement as a potential novel tool for peptide sequence recognition.
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Affiliation(s)
- Aleksandra Tobolska
- Chair of Medical Biotechnology, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland. .,Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland
| | - Klaudia Głowacz
- Chair of Medical Biotechnology, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland.
| | - Patrycja Ciosek-Skibińska
- Chair of Medical Biotechnology, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland.
| | - Wojciech Bal
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawińskiego 5a, 02-106 Warsaw, Poland
| | - Wojciech Wróblewski
- Chair of Medical Biotechnology, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland.
| | - Nina E Wezynfeld
- Chair of Medical Biotechnology, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland.
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35
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Varadwaj PR. Tetrel Bonding in Anion Recognition: A First Principles Investigation. Molecules 2022; 27:molecules27238449. [PMID: 36500544 PMCID: PMC9738195 DOI: 10.3390/molecules27238449] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 11/17/2022] [Accepted: 11/21/2022] [Indexed: 12/12/2022] Open
Abstract
Twenty-five molecule-anion complex systems [I4Tt···X-] (Tt = C, Si, Ge, Sn and Pb; X = F, Cl, Br, I and At) were examined using density functional theory (ωB97X-D) and ab initio (MP2 and CCSD) methods to demonstrate the ability of the tetrel atoms in molecular entities, I4Tt, to recognize the halide anions when in close proximity. The tetrel bond strength for the [I4C···X-] series and [I4Tt···X-] (Tt = Si, Sn; X = I, At), was weak-to-moderate, whereas that in the remaining 16 complexes was dative tetrel bond type with very large interaction energies and short Tt···X close contact distances. The basis set superposition error corrected interaction energies calculated with the highest-level theory applied, [CCSD(T)/def2-TZVPPD], ranged from -3.0 to -112.2 kcal mol-1. The significant variation in interaction energies was realized as a result of different levels of tetrel bonding environment between the interacting partners at the equilibrium geometries of the complex systems. Although the ωB97X-D computed intermolecular geometries and interaction energies of a majority of the [I4Tt···X-] complexes were close to those predicted by the highest level of theory, the MP2 results were shown to be misleading for some of these systems. To provide insight into the nature of the intermolecular chemical bonding environment in the 25 molecule-anion complexes investigated, we discussed the charge-density-based topological and isosurface features that emanated from the application of the quantum theory of atoms in molecules and independent gradient model approaches, respectively.
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Affiliation(s)
- Pradeep R. Varadwaj
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo 7-3-1, Tokyo 113-8656, Japan; or
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Johannesburg 2050, South Africa
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36
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Docker A, Tse YC, Tay HM, Taylor AJ, Zhang Z, Beer PD. Anti‐Hofmeister Anion Selectivity via a Mechanical Bond Effect in Neutral Halogen‐Bonding [2]Rotaxanes. Angew Chem Int Ed Engl 2022; 61:e202214523. [PMID: 36264711 PMCID: PMC10100147 DOI: 10.1002/anie.202214523] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Indexed: 11/18/2022]
Abstract
Exceptionally strong halogen bonding (XB) donor-chloride interactions are exploited for the chloride anion template synthesis of neutral XB [2]rotaxane host systems which contain perfluoroaryl-functionalised axle components, including a remarkably potent novel 4,6-dinitro-1,3-bis-iodotriazole motif. Halide anion recognition properties in aqueous-organic media, determined via extensive 1 H NMR halide anion titration experiments, reveal the rotaxane host systems exhibit dramatically enhanced affinities for hydrophilic Cl- and Br- , but conversely diminished affinities for hydrophobic I- , relative to their non-interlocked axle counterparts. Crucially, this mechanical bond effect induces a binding selectivity which directly opposes Hofmeister bias. Free-energy analysis of this mechanical bond enhancement demonstrates anion recognition by neutral XB interlocked host systems as a rare and general strategy to engineer anti-Hofmeister bias anion selectivity in synthetic receptor design.
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Affiliation(s)
- Andrew Docker
- Department of Chemistry University of Oxford Chemistry Research Laboratory 12 Mansfield Road Oxford OX1 3TA UK
| | - Yuen Cheong Tse
- Department of Chemistry University of Oxford Chemistry Research Laboratory 12 Mansfield Road Oxford OX1 3TA UK
| | - Hui Min Tay
- Department of Chemistry University of Oxford Chemistry Research Laboratory 12 Mansfield Road Oxford OX1 3TA UK
| | - Andrew J. Taylor
- Department of Chemistry University of Oxford Chemistry Research Laboratory 12 Mansfield Road Oxford OX1 3TA UK
| | - Zongyao Zhang
- Department of Chemistry University of Oxford Chemistry Research Laboratory 12 Mansfield Road Oxford OX1 3TA UK
| | - Paul D. Beer
- Department of Chemistry University of Oxford Chemistry Research Laboratory 12 Mansfield Road Oxford OX1 3TA UK
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37
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Flint AJ, Davis AP. Vancomycin mimicry: towards new supramolecular antibiotics. Org Biomol Chem 2022; 20:7694-7712. [PMID: 36165239 DOI: 10.1039/d2ob01381a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Vancomycin is the best-known of the glycopeptide group antibiotics (GPAs), a family of agents which operate by binding the C-terminal deptide D-Ala-D-Ala. This anionic epitope is an interesting target because it plays a central role in bacterial cell wall synthesis, and is not readily modified by evolution. Accordingly, vancomycin has been in use for >60 years but has only provoked limited resistance. Agents which mimic vancomycin but are easier to synthesise and modify could serve as valuable weapons against pathogenic bacteria, broadening the scope of the GPAs and addressing the resistance that does exist. This article gives an overview of vancomycin's structure and action, surveys past work on vancomycin mimicry, and makes the case for renewed effort in the future.
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Affiliation(s)
- Alister J Flint
- University of Bristol, School of Chemistry, Cantock's Close, Bristol, BS8 1TS, UK.
| | - Anthony P Davis
- University of Bristol, School of Chemistry, Cantock's Close, Bristol, BS8 1TS, UK.
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38
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Kumari M, Dey K, Bera SK, Lahiri GK. Indazole-Derived Mono-/Diruthenium and Heterotrinuclear Complexes: Switchable Binding Mode, Electronic Form, and Anion Sensing Events. Inorg Chem 2022; 61:16122-16140. [PMID: 36149433 DOI: 10.1021/acs.inorgchem.2c02628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The article deals with the newer classes of mononuclear: [(acac)2RuIII(H-Iz)(Iz-)] 1, [(acac)2RuIII(H-Iz)2]ClO4 [1]ClO4/[1']ClO4, and [(bpy)2RuII(H-Iz)(Iz-)]ClO4 [2]ClO4, mixed-valent unsymmetric dinuclear: [(acac)2RuIII(μ-Iz-)2RuII(bpy)2]ClO4 [3]ClO4, and heterotrinuclear: [(acac)2RuIII(μ-Iz-)2MII(μ-Iz-)2RuIII(acac)2] (M = Co:4a, Ni:4b, Cu:4c, and Zn:4d) complexes (H-Iz = indazole, Iz- = indazolate, acac = acetylacetonate, and bpy = 2,2'-bipyridine). Structural characterization of all the aforestated complexes established their molecular identities including varying binding modes (Na and Nb donors and 1H-indazole versus 2H-indazole) of the heterocyclic H-Iz/Iz- in the complexes. Unlike [1']ClO4 containing two NH protons at the backface of H-Iz units, the corresponding [1]ClO4 was found to be unstable due to the deprotonation of its positively charged quaternary nitrogen center, and this resulted in the eventual formation of the parent complex 1. A combination of experimental and density functional theory calculations indicated the redox noninnocent feature of Iz- in the complexes along the redox chain. The absence of intervalence charge transfer transition in the near-infrared region of the (Iz-)2-bridged unsymmetric mixed-valent RuIIIRuII state in [3]ClO4 suggested negligible intramolecular electronic coupling corresponding to a class I setup (Robin and Day classification). Heterotrinuclear complexes (4a-4d) exhibited varying spin configurations due to spin-spin interactions between the terminal Ru(III) ions and the central M(II) ion. Though both [3]ClO4 and 4a-4d displayed ligand (Iz-/Iz•)-based oxidation, reductions were preferentially taken place at the bpy and metal (RuIII/RuII) centers, respectively. Unlike 1 or [2]ClO4 containing one free NH proton at the backface of H-Iz, [1']ClO4 with two H-Iz units could selectively and effectively recognize F-, OAc-, and CN- among the tested anions: F-, OAc-, CN-, Cl-, Br-, I-, SCN-, HSO4-, and Η2PΟ4- in CH3CN via intermolecular NH···anion hydrogen bonding interaction. The difference in the sensing feature between [1']ClO4 and 1/[2]ClO4 could be rationalized by their pKa values of 8.4 and 11.3/10.8, respectively.
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Affiliation(s)
- Maya Kumari
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India
| | - Krishnendu Dey
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India
| | - Sudip Kumar Bera
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India
| | - Goutam Kumar Lahiri
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India
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39
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Lauer JC, Bhat AS, Barwig C, Fritz N, Kirschbaum T, Rominger F, Mastalerz M. [2+3] Amide Cages by Oxidation of [2+3] Imine Cages – Revisiting Molecular Hosts for Highly Efficient Nitrate Binding. Chemistry 2022; 28:e202201527. [PMID: 35699158 PMCID: PMC9544679 DOI: 10.1002/chem.202201527] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Indexed: 11/16/2022]
Abstract
The pollution of groundwater with nitrate is a serious issue because nitrate can cause several diseases such as methemoglobinemia or cancer. Therefore, selective removal of nitrate by efficient binding to supramolecular hosts is highly desired. Here we describe how to make [2+3] amide cages in very high to quantitative yields by applying an optimized Pinnick oxidation protocol for the conversion of corresponding imine cages. By NMR titration experiments of the eight different [2+3] amide cages with nitrate, chloride and hydrogen sulfate we identified one cage with an unprecedented high selectivity towards nitrate binding vs. chloride (S=705) or hydrogensulfate (S>13500) in CD2Cl2/CD3CN (1 : 3). NMR experiments as well as single‐crystal structure comparison of host‐guest complexes give insight into structure‐property‐relationships.
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Affiliation(s)
- Jochen C. Lauer
- Organisch-Chemisches Institut Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Avinash S. Bhat
- Organisch-Chemisches Institut Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Chantal Barwig
- Organisch-Chemisches Institut Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Nathalie Fritz
- Organisch-Chemisches Institut Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Tobias Kirschbaum
- Organisch-Chemisches Institut Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Frank Rominger
- Organisch-Chemisches Institut Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Michael Mastalerz
- Organisch-Chemisches Institut Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
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40
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Shen X, Li M, Zhou T, Huang J. Benzo[
b
]naphtho[1,2‐
d
]thiophene Sulfoxides: Biomimetic Synthesis, Photophysical Properties, and Applications. Angew Chem Int Ed Engl 2022; 61:e202203908. [DOI: 10.1002/anie.202203908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Indexed: 11/08/2022]
Affiliation(s)
- Xian‐Yan Shen
- School of Pharmacy Tongji Medical College Huazhong University of Science and Technology Wuhan 430030, Hubei Province China
| | - Man Li
- Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of Education School of Chemistry and Chemical Engineering Huazhong University of Science and Technology Wuhan 430030, Hubei Province China
| | - Tai‐Ping Zhou
- Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of Education School of Chemistry and Chemical Engineering Huazhong University of Science and Technology Wuhan 430030, Hubei Province China
| | - Ji‐Rong Huang
- School of Pharmacy Tongji Medical College Huazhong University of Science and Technology Wuhan 430030, Hubei Province China
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41
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Shen XY, Li M, Zhou TP, Huang JR. Benzo[b]naphtho[1,2‐d]thiophene Sulfoxides: Biomimetic Synthesis, Photophysical Properties, and Applications. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202203908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Xian-Yan Shen
- Huazhong University of Science and Technology Tongji Medical College School of Pharmacy CHINA
| | - Man Li
- Huazhong University of Science and Technology School of Chemistry and Chemical Engineering CHINA
| | - Tai-Ping Zhou
- Huazhong University of Science and Technology School of Chemistry and Chemical Engineering CHINA
| | - Ji-Rong Huang
- Huazhong University of Science and Technology Tongji Medical College School of Pharmacy 13 Hangkong Road 430030 Wuhan CHINA
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Gomez-Vega J, Soto-Cruz JM, Juárez-Sánchez O, Santacruz-Ortega H, Gálvez-Ruiz JC, Corona-Martínez DO, Pérez-González R, Ochoa Lara K. Tritopic Bis-Urea Receptors for Anion and Ion-Pair Recognition. ACS OMEGA 2022; 7:22244-22255. [PMID: 35811876 PMCID: PMC9260929 DOI: 10.1021/acsomega.2c00935] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 06/07/2022] [Indexed: 06/15/2023]
Abstract
This work reports on the synthesis and characterization of three tritopic receptors and their binding properties toward various anions, as their tetrabutylammonium salts, and three alkali metal-acetate salts by UV-vis, fluorescence, 1H, 7Li, 23Na, and 39K NMR in MeCN/dimethyl sulfoxide (DMSO) 9:1 (v/v). Molecular recognition studies showed that the receptors have good affinity for oxyanions. Furthermore, these compounds are capable of ion-pair recognition of the alkali metal-acetate salts studied through a cooperative mechanism. Additionally, molecular modeling at the density functional theory (DFT) level of some lithium and sodium acetate complexes illustrates the ion-pair binding capacity of receptors. The anion is recognized through strong hydrogen bonds of the NH- groups from the two urea sites, while the cation interacts with the oxygen atoms of the polyether spacer. This work demonstrates that these compounds are good receptors for anions and ion pairs.
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Affiliation(s)
- Jancarlo Gomez-Vega
- Departamento de Investigación en Polímeros y Materiales, Universidad de Sonora, Rosales y Encinas s/n, Col. Centro, CP 83000 Hermosillo, Sonora, México
| | - Jesús Martín Soto-Cruz
- Departamento de Investigación en Polímeros y Materiales, Universidad de Sonora, Rosales y Encinas s/n, Col. Centro, CP 83000 Hermosillo, Sonora, México
| | - Octavio Juárez-Sánchez
- Departamento de Investigación en Física, Universidad de Sonora, Rosales y Encinas s/n, Col. Centro, CP 83000 Hermosillo, Sonora, México
| | - Hisila Santacruz-Ortega
- Departamento de Investigación en Polímeros y Materiales, Universidad de Sonora, Rosales y Encinas s/n, Col. Centro, CP 83000 Hermosillo, Sonora, México
| | - Juan Carlos Gálvez-Ruiz
- Departamento de Ciencias Químico Biológicas, Universidad de Sonora, Rosales y Encinas s/n, Col. Centro, CP 83000 Hermosillo, Sonora, México
| | - David Octavio Corona-Martínez
- Departamento de Ciencias Químico Biológicas, Universidad de Sonora, Rosales y Encinas s/n, Col. Centro, CP 83000 Hermosillo, Sonora, México
| | - Refugio Pérez-González
- Departamento de Investigación en Polímeros y Materiales, Universidad de Sonora, Rosales y Encinas s/n, Col. Centro, CP 83000 Hermosillo, Sonora, México
| | - Karen Ochoa Lara
- Departamento de Investigación en Polímeros y Materiales, Universidad de Sonora, Rosales y Encinas s/n, Col. Centro, CP 83000 Hermosillo, Sonora, México
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43
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Abdurakhmanova ER, Cmoch P, Szumna A. Three modes of interactions between anions and phenolic macrocycles: a comparative study. Org Biomol Chem 2022; 20:5095-5103. [PMID: 35699382 DOI: 10.1039/d2ob00880g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Macrocyclic polyphenolic compounds such as resorcin[4]arenes can be considered as multidentate anion receptors. In the current work, we combine new experimental data and reports from the previous literature (solution data and deposited crystal structures from the CCDC) to systematically analyze binding motifs between resorcin[4]arene derivatives and anions, determine the role of supporting interactions from CH donors, ion pairing and estimate their relative strength. We have found that in medium polarity solvents (THF) anion binding is a main driving force for the formation of complexes between resorcinarenes and Alk4NX salts. Three binding modes have been detected using 1H NMR and DOSY, depending on the type of additional interactions. Mode I was observed for upper-rim unsubstituted resorcinarenes, which use OH groups and aromatic CH from the upper rim as hydrogen bond donors to form multidentate and multivalent binding sites at the upper rim. Mode II was observed for upper-rim halogenated resorcinarenes (tetrabromo- and tetraiodo-derivatives), which use OH groups and aliphatic CH atoms from the bridges to support the chelation of anions between aromatic units. This binding mode is also multidentate and multivalent, but weaker and more anion-selective than mode I (works effectively for chlorides but not for bromides). For O-substituted derivatives, mode III is observed, with anions bound in a nest formed by aromatic CH atoms in the lower rim (multidentate but monovalent binding). The relative strength of these three binding modes, their solvent-dependence, and emergence in the crystal structures (CCDC) have been evaluated.
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Affiliation(s)
- Esma R Abdurakhmanova
- Institute of Organic Chemistry Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland.
| | - Piotr Cmoch
- Institute of Organic Chemistry Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland.
| | - Agnieszka Szumna
- Institute of Organic Chemistry Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland.
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44
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Martinon TLM, Pierre VC. Luminescent Lanthanide Probes for Inorganic and Organic Phosphates. Chem Asian J 2022; 17:e202200495. [PMID: 35750633 PMCID: PMC9388549 DOI: 10.1002/asia.202200495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 06/19/2022] [Indexed: 11/09/2022]
Abstract
Inorganic and organic phosphates-including orthophosphate, nucleotides, and DNA-are some of the most fundamental anions in cellular biology, regulating numerous processes of both medical and environmental significance. The characteristic long lifetimes of emitting lanthanides, including the brighter europium(III) and terbium(III), make them ideally suited for the development of molecular probes for the detection of phosphates directly in complex aqueous media. Moreover, given their high oxophilicity and the exquisite sensitivity of their quantum yields to their hydration number, those luminescent lanthanides are perfect for the detection of phosphates. Herein we discuss the principles that have guided the recent developments of molecular probes selective for inorganic or organic phosphates and how these lanthanide complexes facilitate the study of numerous biological processes.
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Affiliation(s)
- Thibaut L M Martinon
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, MN 55455, USA
| | - Valérie C Pierre
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, MN 55455, USA
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45
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Hein R, Beer PD. Halogen bonding and chalcogen bonding mediated sensing. Chem Sci 2022; 13:7098-7125. [PMID: 35799814 PMCID: PMC9214886 DOI: 10.1039/d2sc01800d] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 05/10/2022] [Indexed: 11/21/2022] Open
Abstract
Sigma-hole interactions, in particular halogen bonding (XB) and chalcogen bonding (ChB), have become indispensable tools in supramolecular chemistry, with wide-ranging applications in crystal engineering, catalysis and materials chemistry as well as anion recognition, transport and sensing. The latter has very rapidly developed in recent years and is becoming a mature research area in its own right. This can be attributed to the numerous advantages sigma-hole interactions imbue in sensor design, in particular high degrees of selectivity, sensitivity and the capability for sensing in aqueous media. Herein, we provide the first detailed overview of all developments in the field of XB and ChB mediated sensing, in particular the detection of anions but also neutral (gaseous) Lewis bases. This includes a wide range of optical colorimetric and luminescent sensors as well as an array of electrochemical sensors, most notably redox-active host systems. In addition, we discuss a range of other sensor designs, including capacitive sensors and chemiresistors, and provide a detailed overview and outlook for future fundamental developments in the field. Importantly the sensing concepts and methodologies described herein for the XB and ChB mediated sensing of anions, are generically applicable for the development of supramolecular receptors and sensors in general, including those for cations and neutral molecules employing a wide array of non-covalent interactions. As such we believe this review to be a useful guide to both the supramolecular and general chemistry community with interests in the fields of host-guest recognition and small molecule sensing. Moreover, we also highlight the need for a broader integration of supramolecular chemistry, analytical chemistry, synthetic chemistry and materials science in the development of the next generation of potent sensors.
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Affiliation(s)
- Robert Hein
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford Mansfield Road Oxford OX1 3TA UK
| | - Paul D Beer
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford Mansfield Road Oxford OX1 3TA UK
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Towards Anion Recognition and Precipitation with Water-Soluble 1,2,4-Selenodiazolium Salts: Combined Structural and Theoretical Study. Int J Mol Sci 2022; 23:ijms23126372. [PMID: 35742815 PMCID: PMC9224156 DOI: 10.3390/ijms23126372] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 06/04/2022] [Accepted: 06/06/2022] [Indexed: 02/04/2023] Open
Abstract
The synthesis and structural characterization of a series of supramolecular complexes of bicyclic cationic pyridine-fused 1,2,4-selenodiazoles with various anions is reported. The binding of trifluoroacetate, tetrachloroaurate, tetraphenylborate, perrhenate, and pertechnetate anions in the solid state is regarded. All the anions interact with selenodiazolium cations exclusively via a pair of “chelating” Se⋯O and H⋯O non-covalent interactions, which make them an attractive, novel, non-classical supramolecular recognition unit or a synthon. Trifluoroacetate salts were conveniently generated via novel oxidation reaction of 2,2′-dipyridyl diselenide with bis(trifluoroacetoxy)iodo)benzene in the presence of corresponding nitriles. Isolation and structural characterization of transient 2-pyridylselenyl trifluoroacetate was achieved. X-ray analysis has demonstrated that the latter forms dimers in the solid state featuring very short and strong Se⋯O and Se⋯N ChB contacts. 1,2,4-Selenodiazolium trifluoroacetates or halides show good solubility in water. In contrast, (AuCl4)−, (ReO4)−, or (TcO4)− derivatives immediately precipitate from aqueous solutions. Structural features of these supramolecular complexes in the solid state are discussed. The nature and energies of the non-covalent interactions in novel assembles were studied by the theoretical methods. To the best of our knowledge, this is the first study that regards perrhenate and pertechnetate as acceptors in ChB interactions. The results presented here will be useful for further developments in anion recognition and precipitation involving cationic 1,2,4-selenodiazoles.
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Rashid A, Mondal S, Mondal S, Ghosh P. A bis‐heteroleptic imidazolium‐bipyridine functionalized iridium(III) complex for fluorescence lifetime‐based recognition and sensing of phosphates. Chem Asian J 2022; 17:e202200393. [DOI: 10.1002/asia.202200393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 06/01/2022] [Indexed: 11/11/2022]
Affiliation(s)
- Ambreen Rashid
- Indian Association for the Cultivation of Science School of Chemical Sciences INDIA
| | - Sahidul Mondal
- Indian Association for the Cultivation of Science School of Chemical Sciences INDIA
| | - Subal Mondal
- Indian Association for the Cultivation of Science School of Chemical Sciences INDIA
| | - Pradyut - Ghosh
- Indian Association for the Cultivation of Science School of Chemical Sciences 2A & 2B Raja S. C. Mullick RoadJadavpur 700032 Kolkata INDIA
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48
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Fernandes RS, Dey N. Anion binding studies with anthraimidazoledione-based positional isomers: A comprehensive analysis of different strategies for improved selectivity. Talanta 2022; 250:123703. [DOI: 10.1016/j.talanta.2022.123703] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 06/14/2022] [Accepted: 06/15/2022] [Indexed: 11/30/2022]
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49
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Goodwin RJ, Docker A, MacDermott‐Opeskin HI, Aitken HM, O'Mara ML, Beer PD, White NG. Hydroxy Groups Enhance [2]Rotaxane Anion Binding Selectivity. Chemistry 2022; 28:e202200389. [PMID: 35293643 PMCID: PMC9321576 DOI: 10.1002/chem.202200389] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Indexed: 11/25/2022]
Abstract
We report the synthesis of two [2]rotaxanes containing an interlocked three dimensional binding cavity formed from a pyridinium bis(amide) axle component containing two phenol donors, and an isophthalamide based macrocycle. In the competitive solvent mixture 1 : 1 CDCl3 : CD3OD, one of the receptors exhibits a much higher selectivity preference for chloride than an analogous rotaxane without the hydroxy groups. X‐ray crystal structures reveal the chloride anion guest encapsulated within the interlocked binding cavity, though not all of the hydrogen bond donors are utilised. Computational semi‐empirical simulations indicate that secondary intermolecular interactions occur between the axle hydroxy hydrogen bond donors and the [2]rotaxane macrocycle components, contributing to a more preorganised binding pocket, which may be responsible for the observed enhanced selectivity.
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Affiliation(s)
- Rosemary J. Goodwin
- Research School of Chemistry Australian National University Canberra ACT Australia
| | - Andrew Docker
- Department of Chemistry University of Oxford Chemistry Research Laboratory Mansfield Road Oxford OX1 3TA UK
| | | | - Heather M. Aitken
- Research School of Chemistry Australian National University Canberra ACT Australia
| | - Megan L. O'Mara
- Research School of Chemistry Australian National University Canberra ACT Australia
| | - Paul D. Beer
- Department of Chemistry University of Oxford Chemistry Research Laboratory Mansfield Road Oxford OX1 3TA UK
| | - Nicholas G. White
- Research School of Chemistry Australian National University Canberra ACT Australia
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50
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Characterizing the Properties of Anion-Binding Bis(cyclopeptides) with Solvent-Independent Energy Increments. CHEMISTRY 2022. [DOI: 10.3390/chemistry4020031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The binding energies of 121 complexes between anions and bis(cyclopeptides) differing in the structure and the number of linking units between the two cyclopeptide rings were analyzed. These Gibbs free energies were obtained in earlier work for different anions, under different conditions, and with different methods. The multiparametric analysis of a subset of 42 binding energies afforded linear relationships that allowed the relatively reliable estimation of the iodide and sulfate affinity of three structurally related bis(cyclopeptides) in water/methanol and water/acetonitrile mixtures at different solvent compositions. Three parameters were required to achieve a satisfactory correlation, namely, the Gibbs free energy of transferring the respective anion from water into the solvent mixture in which complex stability was determined, and the Kamlet–Taft parameters α and β. Based on these relationships, the anion affinities of the other bis(cyclopeptides) were evaluated, giving rise to a set of energy increments that allow quantifying the effects of the linker structure or the nature of the anion on binding affinity relative to the reference system.
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