51
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Huang SY, Pierre VC. Achieving Selectivity for Phosphate over Pyrophosphate in Ethanol with Iron(III)-Based Fluorescent Probes. JACS AU 2022; 2:1604-1609. [PMID: 35911450 PMCID: PMC9326827 DOI: 10.1021/jacsau.2c00200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Two iron(III)-based molecular receptors employing 1,2-hydroxypyridinone ligands were developed for phosphate recognition and fluorescence sensing via indicator displacement assay (IDA). The tetra- and pentadentate ligands enable anion recognition by the iron(III) center via its remaining one or two open coordination sites. Weak protective coordination of fluorescein at those sites prevents the formation of μ-oxo dimers in aerated solutions. Its rapid and selective displacement by inorganic phosphate results in a 20-fold increase in the fluorescence of the indicator. Both receptors exhibit high affinity for inorganic phosphate and high selectivity over common competing anions, including halides, acetate, carbonate, and, remarkably, pyrophosphate as well as arsenate. Coordination of phosphate to the iron(III) center was confirmed by ATR-IR and 31P NMR spectroscopy.
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52
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Qiao M, Zhang R, Liu S, Liu J, Ding L, Fang Y. Imidazolium-Modified Bispyrene-Based Fluorescent Aggregates for Discrimination of Multiple Anions in Aqueous Solution. ACS APPLIED MATERIALS & INTERFACES 2022; 14:32706-32718. [PMID: 35817757 DOI: 10.1021/acsami.2c07047] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
A great number of anions exist in biological systems and natural environment, and are highly relevant to human health and environment quality. It is necessary to develop simple and effective sensors to differentiate and identify those similar or different anions. Here, an imidazolium-modified bispyrene-based fluorescent amphiphilic probe DPyDIM was synthesized and its aggregates were applied to detect and discriminate various anions. The fluorescent aggregates exhibit ratiometric responses to different types of anions. Moreover, the ratiometric responses to different types of anions are featured with multiple-wavelength cross-reactivity. The collection of fluorescence variation at four typical wavelengths can generate distinct recognition patterns to specific anions. The heat map and principal component analysis results verify that this single fluorescent sensor system can effectively and sensitively identify 16 kinds of anions that belong to phosphorus-containing, sulfur-containing anions, and anionic surfactants. The cross-reactive sensing of the amphiphilic fluorescent aggregates was attributed to the different influences on the aggregation behaviors of the probes by different anions. The present work provides a promising strategy for effective detection and discrimination of multiple anions by employing dynamic fluorescent aggregates as a sensing platform.
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Affiliation(s)
- Min Qiao
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, PR China
| | - Ruowen Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, PR China
| | - Shanshan Liu
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, PR China
| | - Jing Liu
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, PR China
| | - Liping Ding
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, PR China
| | - Yu Fang
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, PR China
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53
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Mondal A, Toyoda R, Costil R, Feringa BL. Chemically Driven Rotatory Molecular Machines. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202206631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Anirban Mondal
- University of Groningen: Rijksuniversiteit Groningen Stratingh Institute for Chemistry NETHERLANDS
| | - Ryojun Toyoda
- University of Groningen: Rijksuniversiteit Groningen Stratingh Institute for Chmistry NETHERLANDS
| | - Romain Costil
- University of Groningen: Rijksuniversiteit Groningen Stratingh Institute for Chemistry NETHERLANDS
| | - Ben L Feringa
- University of Groningen Stratingh Institute for Chemistry, Faculty of Science and Engineering Nijenborgh 4 9747 AG Groningen NETHERLANDS
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54
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Hollstein S, Shyshov O, Hanževački M, Zhao J, Rudolf T, Jäger CM, von Delius M. Dynamic Covalent Self-Assembly of Chloride- and Ion-Pair-Templated Cryptates. Angew Chem Int Ed Engl 2022; 61:e202201831. [PMID: 35384202 PMCID: PMC9400851 DOI: 10.1002/anie.202201831] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Indexed: 12/17/2022]
Abstract
While supramolecular hosts capable of binding and transporting anions and ion pairs are now widely available, self‐assembled architectures are still rare, even though they offer an inherent mechanism for the release of the guest ion(s). In this work, we report the dynamic covalent self‐assembly of tripodal, urea‐based anion cryptates that are held together by two orthoester bridgeheads. These hosts exhibit affinity for anions such as Cl−, Br− or I− in the moderate range that is typically advantageous for applications in membrane transport. In unprecedented experiments, we were able to dissociate the Cs⋅Cl ion pair by simultaneously assembling suitably sized orthoester hosts around the Cs+ and the Cl− ion.
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Affiliation(s)
- Selina Hollstein
- Institute of Organic Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Oleksandr Shyshov
- Institute of Organic Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Marko Hanževački
- Department of Chemical and Environmental Engineering, University of Nottingham University Park, Nottingham, NG7 2RD, UK
| | - Jie Zhao
- Institute of Organic Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Tamara Rudolf
- Institute of Organic Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Christof M Jäger
- Department of Chemical and Environmental Engineering, University of Nottingham University Park, Nottingham, NG7 2RD, UK
| | - Max von Delius
- Institute of Organic Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
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55
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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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56
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Derrick JS, Loipersberger M, Nistanaki SK, Rothweiler AV, Head-Gordon M, Nichols EM, Chang CJ. Templating Bicarbonate in the Second Coordination Sphere Enhances Electrochemical CO 2 Reduction Catalyzed by Iron Porphyrins. J Am Chem Soc 2022; 144:11656-11663. [PMID: 35749266 DOI: 10.1021/jacs.2c02972] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Bicarbonate-based electrolytes are ubiquitous in aqueous electrochemical CO2 reduction, particularly in heterogenous catalysis, where they demonstrate improved catalytic performance relative to other buffers. In contrast, the presence of bicarbonate in organic electrolytes and its roles in homogeneous electrocatalysis remain underexplored. Here, we investigate the influence of bicarbonate on iron porphyrin-catalyzed electrochemical CO2 reduction. We show that bicarbonate is a viable proton donor in organic electrolyte (pKa = 20.8 in dimethyl sulfoxide) and that urea pendants in the second coordination sphere can be used to template bicarbonate in the vicinity of a molecular iron porphyrin catalyst. The templated binding of bicarbonate increases its acidity, resulting in a 1500-fold enhancement in catalytic rates relative to unmodified parent iron porphyrin. This work emphasizes the importance of bicarbonate speciation in wet organic electrolytes and establishes second-sphere bicarbonate templating as a design strategy to harness this adventitious acid and enhance CO2 reduction catalysis.
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Affiliation(s)
- Jeffrey S Derrick
- Department of Chemistry, University of California, Berkeley, California 94720, United States.,Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Matthias Loipersberger
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Sepand K Nistanaki
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Aila V Rothweiler
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Martin Head-Gordon
- Department of Chemistry, University of California, Berkeley, California 94720, United States.,Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Eva M Nichols
- Department of Chemistry, The University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
| | - Christopher J Chang
- Department of Chemistry, University of California, Berkeley, California 94720, United States.,Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States.,Department of Molecular and Cell Biology, University of California, Berkeley, California 94720, United States
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57
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Barišić D, Lešić F, Tireli Vlašić M, Užarević K, Bregović N, Tomišić V. Anion binding by receptors containing NH donating groups – What do anions prefer? Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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58
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Begato F, Penasa R, Licini G, Zonta C. Chiroptical Enhancement of Chiral Dicarboxylic Acids from Confinement in a Stereodynamic Supramolecular Cage. ACS Sens 2022; 7:1390-1394. [PMID: 35472260 PMCID: PMC9150167 DOI: 10.1021/acssensors.2c00038] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
![]()
The fundamental implications
that chirality has in science and
technology require continuous efforts for the development of fast,
economic, and reliable quantitative methods for enantiopurity assessment.
Among the different analytical approaches, chiroptical techniques
in combination with supramolecular methodologies have shown promising
results in terms of both costs and time analysis. In this article,
a tris(2-pyridylmethyl)amines (TPMA)-based supramolecular
cage is able to amplify the circular dichroism (CD) signal of a series
of chiral dicarboxylic acids also in the presence of a complex mixture.
This feature has been used to quantify tartaric acid in wines and
to discriminate different matrixes using principal component analysis
(PCA) of the raw CD data.
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Affiliation(s)
- Federico Begato
- Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131 Padova, Italy
| | - Roberto Penasa
- Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131 Padova, Italy
| | - Giulia Licini
- Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131 Padova, Italy
| | - Cristiano Zonta
- Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131 Padova, Italy
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59
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Al Isawi WA, Zeller M, Mezei G. Supramolecular Incarceration and Extraction of Tetrafluoroberyllate from Water by Nanojars. Inorg Chem 2022; 61:8611-8622. [PMID: 35617675 DOI: 10.1021/acs.inorgchem.2c01198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The previously unexplored noncovalent binding of the highly toxic tetrafluoroberyllate anion (BeF42-) and its extraction from water into organic solvents are presented. Nanojars resemble anion-binding proteins in that they also possess an inner anion binding pocket lined by a multitude of H-bond donors (OH groups), which wrap around the incarcerated anion and completely isolate it from the surrounding medium. The BeF4-binding propensity of [BeF4⊂{CuII(OH)(pz)}n]2- (pz = pyrazolate; n = 27-32) nanojars of different sizes is investigated using an array of techniques including mass spectrometry, paramagnetic 1H, 9Be, and 19F NMR spectroscopy, and X-ray crystallography, along with thermal stability studies in solution and chemical stability studies toward acidity and Ba2+ ions. The latter is found to be unable to precipitate the insoluble BaBeF4 from nanojar solutions, indicating a very strong binding of the BeF42- anion by nanojars. 9Be and 19F NMR spectroscopy allows for the unprecedented direct probing of the incarcerated anion in a nanojar and, along with 1H NMR studies, reveals the fluxional structure of nanojars and their inner anion-binding pockets. Single-crystal X-ray diffraction provides the crystal and molecular structures of (Bu4N)2[BeF4⊂{Cu(OH)(pz)}32], which contains a novel Cux-ring combination (x = 9 + 14 + 9), (Bu4N)2[BeF4⊂{Cu(OH)(pz)}8+14+9], and (Bu4N)2[BeF4⊂{Cu(OH)(pz)}6+12+10] and offers detailed structural parameters related to the supramolecular binding of BeF42- in these nanojars. The extraction of BeF42- from water into organic solvents, including the highly hydrophobic solvent n-heptane, demonstrates that nanojars are efficient binding and extracting agents not only for oxoanions but also for fluoroanions.
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Affiliation(s)
- Wisam A Al Isawi
- Department of Chemistry, Western Michigan University, Kalamazoo, Michigan 49008, United States
| | - Matthias Zeller
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Gellert Mezei
- Department of Chemistry, Western Michigan University, Kalamazoo, Michigan 49008, United States
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60
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Martínez-Aguirre MA, Ortega-Valdovinos LR, Villamil-Ramos R, Yatsimirsky AK. Anion Recognition by Benzoxaborole. J Org Chem 2022; 87:7734-7746. [PMID: 35612515 DOI: 10.1021/acs.joc.2c00324] [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 binding types (H-bonding or coordinate) and stability constants for complexes of 11 mono- and di-anions with benzoxaborole (1) were determined by 1H and 11B NMR titrations in DMSO or MeCN. Compared to phenylboronic acid (PBA), 1 is a stronger Lewis acid and a poorer H-bond donor with only one B-OH group, which is expected therefore to recognize anions mostly through the coordinate bonding. This is the case however only with F-, HPO42-, and PhPO32- anions, which are coordinately bonded to 1, and partially with SO42-, which forms only the H-bonded complex with PBA, but both H-bonded and coordinate complexes with 1. The majority of tested anions (AcO-, PhPO3H-, (PhO)2PO2-, Cl-, and Br-) form H-bonded complexes with both 1 and PBA, whereas H2PO4- changes the binding mode from coordinate for PBA to H-bonded for 1. The preferable binding type for each anion is confirmed by calculations of DFT-optimized structures of the anion complexes of 1. The preferable binding type can be rationalized considering the effects of the steric hindrance, more significant for the coordinate bonding, and of increased anion basicity, which is favorable for both binding types, but enhances the strength of coordinate bonding more significantly than the strength of H-bonding.
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Affiliation(s)
| | | | - Raúl Villamil-Ramos
- Centro de Investigaciones Químicas-IICBA, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, C.P. 62209 Cuernavaca, Morelos, México
| | - Anatoly K Yatsimirsky
- Facultad de Química, Universidad Nacional Autónoma de México, 04510 México D.F., México
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61
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Hollstein S, Shyshov O, Hanževački M, Zhao J, Rudolf T, Jäger CM, Delius M. Dynamisch kovalente Selbstassemblierung von Chlorid‐ und Ionenpaar‐templierten Kryptaten. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202201831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Selina Hollstein
- Institut für Organische Chemie Universität Ulm Albert-Einstein-Allee 11 89081 Ulm Deutschland
| | - Oleksandr Shyshov
- Institut für Organische Chemie Universität Ulm Albert-Einstein-Allee 11 89081 Ulm Deutschland
| | - Marko Hanževački
- Department of Chemical and Environmental Engineering University of Nottingham University Park Nottingham NG7 2RD Großbritannien
| | - Jie Zhao
- Institut für Organische Chemie Universität Ulm Albert-Einstein-Allee 11 89081 Ulm Deutschland
| | - Tamara Rudolf
- Institut für Organische Chemie Universität Ulm Albert-Einstein-Allee 11 89081 Ulm Deutschland
| | - Christof M. Jäger
- Department of Chemical and Environmental Engineering University of Nottingham University Park Nottingham NG7 2RD Großbritannien
| | - Max Delius
- Institut für Organische Chemie Universität Ulm Albert-Einstein-Allee 11 89081 Ulm Deutschland
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62
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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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63
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Chen L, Wu X, Gilchrist AM, Gale PA. Organoplatinum Compounds as Anion‐Tuneable Uphill Hydroxide Transporters. Angew Chem Int Ed Engl 2022; 61:e202116355. [PMID: 35192743 PMCID: PMC9310596 DOI: 10.1002/anie.202116355] [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: 11/30/2021] [Indexed: 11/12/2022]
Abstract
Active transport of ions uphill, creating a concentration gradient across a cell membrane, is essential for life. It remains a significant challenge to develop synthetic systems that allow active uphill transport. Here, a transport process fuelled by organometallic compounds is reported that creates a pH gradient. The hydrolysis reaction of PtII complexes results in the formation of aqua complexes that established rapid transmembrane movement (“flip‐flop”) of neutral Pt−OH species, leading to protonation of the OH group in the inner leaflet, generating OH− ions, and so increasing the pH in the intravesicular solution. The organoplatinum complex effectively transports bound hydroxide ions across the membrane in a neutral complex. The initial net flow of the PtII complex into the vesicles generates a positive electric potential that can further drive uphill transport because the electric potential is opposed to the chemical potential of OH−. The OH− ions equilibrate with this transmembrane electric potential but cannot remove it due to the relatively low permeability of the charged species. As a result, effective hydroxide transport against its concentration gradient can be achieved, and multiple additions can continuously drive the generation of OH− against its concentration gradient up to ΔpH>2. Moreover, the external addition of different anions can control the generation of OH− depending on their anion binding affinity. When anions displayed very high binding affinities towards PtII compounds, such as halides, the external anions could dissipate the pH gradient. In contrast, a further pH increase was observed for weak binding anions, such as sulfate, due to the increase of positive electric potential.
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Affiliation(s)
- Li‐Jun Chen
- School of Chemistry The University of Sydney Sydney NSW 2006 Australia
| | - Xin Wu
- School of Chemistry The University of Sydney Sydney NSW 2006 Australia
| | | | - Philip A. Gale
- School of Chemistry The University of Sydney Sydney NSW 2006 Australia
- The University of Sydney Nano Institute (SydneyNano) The University of Sydney Sydney NSW 2006 Australia
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64
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Karges J, Cohen SM. Preorganized Homochiral Pyrrole-Based Receptors That Display Enantioselective Anion Binding. European J Org Chem 2022; 2022:e202101346. [PMID: 36778753 PMCID: PMC9912926 DOI: 10.1002/ejoc.202101346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Herein, a new scaffold for anion recognition based on a tripodal tris(pyrrolamide) motif is presented. The receptors were able to bind to a variety of anions with high affinity. Using density functional theory methods, the three-dimensional geometry of the receptor-anion complex was calculated. These calculations show that the receptors bind anions via a preorganized cavity of amide and pyrrole hydrogen bond donor groups. Based on these findings, homochiral tris(pyrrolamide) receptors were prepared, which produced as much as a 1.6-fold greater affinity for (S)-(+)-mandelate over (R)-(-)-mandelate, demonstrating the ability to differentiate between these enantiomeric anions. The interaction of (S)-(+)-mandelate and (R)-(-)-mandelate within the homochiral receptor was examined by solution NMR spectroscopy and density functional theory calculations. These findings indicate that the preorganized positioning of the pyrrole groups and subsequent sterics allows to differentiate between the stereoisomeric anions.
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Affiliation(s)
- Johannes Karges
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Seth M. Cohen
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
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65
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Valderrey V, Gawlitza K, Rurack K. Thiourea‐ and Amino‐Substituted Benzoxadiazole Dyes with Large Stokes Shifts as Red‐Emitting Probe Monomers for Imprinted Polymer Layers Targeting Carboxylate‐Containing Antibiotics. Chemistry 2022; 28:e202104525. [PMID: 35224792 PMCID: PMC9310751 DOI: 10.1002/chem.202104525] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Indexed: 12/23/2022]
Abstract
Bifunctional fluorescent molecular oxoanion probes based on the benzoxadiazole (BD) chromophore are described which integrate a thiourea binding motif and a polymerizable 2‐aminoethyl methacrylate unit in the 4,7‐positions of the BD core. Concerted charge transfer in this electron donor‐acceptor‐donor architecture endows the dyes with strongly Stokes shifted (up to >250 nm) absorption and fluorescence. Binding of electron‐rich carboxylate guests at the thiourea receptor leads to further analyte‐induced red‐shifts of the emission, shifting the fluorescence maximum of the complexes to ≥700 nm. Association constants for acetate are ranging from 1–5×105 M−1 in acetonitrile. Integration of one of the fluorescent probes through its polymerizable moiety into molecularly imprinted polymers (MIPs) grafted from the surface of submicron silica cores yielded fluorescent MIP‐coated particle probes for the selective detection of antibiotics containing aliphatic carboxylate groups such as enoxacin (ENOX) at micromolar concentrations in highly polar solvents like acetonitrile.
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Affiliation(s)
- Virginia Valderrey
- Chemical and Optical Sensing Division Bundesanstalt für Materialforschung und -prüfung (BAM) Richard-Willstätter-Straße 11 12489 Berlin Germany
| | - Kornelia Gawlitza
- Chemical and Optical Sensing Division Bundesanstalt für Materialforschung und -prüfung (BAM) Richard-Willstätter-Straße 11 12489 Berlin Germany
| | - Knut Rurack
- Chemical and Optical Sensing Division Bundesanstalt für Materialforschung und -prüfung (BAM) Richard-Willstätter-Straße 11 12489 Berlin Germany
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66
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Kato R, Ito K, Sue K, Okumura H, Hattori T. Optical Sensing of Phenylurea Pesticides by Hydrogen Bonding with Carboxylate Dyess. ANAL LETT 2022. [DOI: 10.1080/00032719.2022.2059494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Affiliation(s)
- Ryo Kato
- Cooperative Research Facility Center, Toyohashi University of Technology, Toyohashi, Japan
| | - Kouta Ito
- Department of Electrical & Electronic Information Engineering, Toyohashi University of Technology, Toyohashi, Japan
| | - Koushiro Sue
- Department of Electrical & Electronic Information Engineering, Toyohashi University of Technology, Toyohashi, Japan
| | - Hiroki Okumura
- Department of Materials Science, Toyohashi University of Technology, Toyohashi, Japan
| | - Toshiaki Hattori
- Department of Electrical & Electronic Information Engineering, Toyohashi University of Technology, Toyohashi, Japan
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67
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Hu QP, Zhou H, Huang TY, Ao YF, Wang DX, Wang QQ. Chirality Gearing in an Achiral Cage through Adaptive Binding. J Am Chem Soc 2022; 144:6180-6184. [DOI: 10.1021/jacs.2c02040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Qi-Ping Hu
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hao Zhou
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Teng-Yu Huang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yu-Fei Ao
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - De-Xian Wang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qi-Qiang Wang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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68
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Chen L, Wu X, Gilchrist AM, Gale PA. Organoplatinum Compounds as Anion‐Tuneable Uphill Hydroxide Transporters. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202116355] [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]
Affiliation(s)
- Li‐Jun Chen
- School of Chemistry The University of Sydney Sydney NSW 2006 Australia
| | - Xin Wu
- School of Chemistry The University of Sydney Sydney NSW 2006 Australia
| | | | - Philip A. Gale
- School of Chemistry The University of Sydney Sydney NSW 2006 Australia
- The University of Sydney Nano Institute (SydneyNano) The University of Sydney Sydney NSW 2006 Australia
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69
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A Simulation Model for the Non-Electrogenic Uniport Carrier-Assisted Transport of Ions across Lipid Membranes. MEMBRANES 2022; 12:membranes12030292. [PMID: 35323767 PMCID: PMC8955484 DOI: 10.3390/membranes12030292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Revised: 02/24/2022] [Accepted: 03/01/2022] [Indexed: 12/10/2022]
Abstract
Impressive work has been completed in recent decades on the transmembrane anion transport capability of small synthetic transporters from many different structural classes. However, very few predicting models have been proposed for the fast screening of compound libraries before spending time and resources on the laboratory bench for their synthesis. In this work, a new approach is presented which aims at describing the transport process by taking all the steps into explicit consideration, and includes all possible experiment-derived parameters. The algorithm is able to simulate the macroscopic experiments performed with lipid vesicles to assess the ion-transport ability of the synthetic transporters following a non-electrogenic uniport mechanism. While keeping calculation time affordable, the final goal is the curve-fitting of real experimental data—so, to obtain both an analysis and a predictive tool. The role and the relative weight of the different parameters is discussed and the agreement with the literature is shown by using the simulations of a virtual benchmark case. The fitting of real experimental curves is also shown for two transporters of different structural type.
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70
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Zhou D, Zhao B, Bai Y, Mukherjee S, Liu J, Bian H, Fang Y. Exploring the Structure and Complexation Dynamics of Azide Anion Recognition by Calix[4]pyrroles in Solution. J Phys Chem Lett 2022; 13:669-675. [PMID: 35023744 DOI: 10.1021/acs.jpclett.1c03962] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The structure and anion recognition dynamics between calix[4]pyrroles and azide (N3-) anions in the form of its TBA+ and Na+ salts were investigated in dimethyl sulfoxide solutions by Fourier transform infrared (FTIR) spectroscopy and ultrafast IR spectroscopy. Vibrational energy redistribution of the N3- anion in the complex is accelerated through hydrogen bonding interactions with the N-H proton of the receptor. Rotational dynamics of the bound N3- is greatly restricted, demonstrating a distinct countercation effect. The detailed binding modes of N3- with the receptor were further evaluated by the density functional theoretical (DFT) calculations and nuclear magnetic resonance (NMR) spectroscopy. All of these measurements support the notion that the calix[4]pyrroles are capable of capturing the azide anion in solution. However, the calix[4]pyrroles may not necessarily undergo a conformational change to a cone-like geometry when they bind to the azide anion in the solution.
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Affiliation(s)
- Dexia Zhou
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Boxu Zhao
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Yimin Bai
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Somnath Mukherjee
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Jing Liu
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Hongtao Bian
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Yu Fang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China
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71
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Niedbała P, Ceborska M, Mehmet M, Ignacak W, Jurczak J, Dąbrowa K. Anion Recognition by a Pincer-Type Host Constructed from Two Polyamide Macrocyclic Frameworks Jointed by a Photo-Addressable Azobenzene Switch. MATERIALS (BASEL, SWITZERLAND) 2022; 15:692. [PMID: 35057408 PMCID: PMC8777895 DOI: 10.3390/ma15020692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 01/04/2022] [Accepted: 01/10/2022] [Indexed: 12/10/2022]
Abstract
A sterically crowded light-responsive host 1 was synthetized with a 93% yield by applying a post-functionalization protocol utilizing the double amidation of 4,4'-azodibenzoyl dichloride with a readily available 26-membered macrocyclic amine. X-ray structures of two hydrates of trans-1 demonstrate a very different alignment of the azobenzene linkage, which is involved in T-shape or parallel-displaced π⋯π stacking interactions with the pyridine-2,6-dicarboxamide moieties from the macrocyclic backbone. Despite the rigidity of the macrocyclic framework, which generates a large steric hindrance around the azobenzene chromophore, the host 1 retains the ability to undergo a reversible cis⟷trans isomerization upon irradiation with UVA (368 nm) and blue (410 nm) light. Moreover, thermal cis→trans back-isomerization (ΔG0 = 106.5 kJ∙mol-1, t½ = 141 h) is markedly slowed down as compared to the non-macrocyclic analog. 1H NMR titration experiments in DMSO-d6/0.5% water solution reveal that trans-1 exhibits a strong preference for dihydrogenphosphate (H2PO4-) over other anions (Cl-, MeCO2-, and PhCO2-), whereas the photogenerated metastable cis-1 shows lower affinity for the H2PO4- anion.
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Affiliation(s)
- Patryk Niedbała
- Institute of Organic Chemistry, Polish Academy of Sciences, 01-224 Warsaw, Poland; (P.N.); (M.M.); (W.I.)
| | - Magdalena Ceborska
- Institute of Physical Chemistry, Polish Academy of Sciences, 01-224 Warsaw, Poland;
| | - Mart Mehmet
- Institute of Organic Chemistry, Polish Academy of Sciences, 01-224 Warsaw, Poland; (P.N.); (M.M.); (W.I.)
| | - Wiktor Ignacak
- Institute of Organic Chemistry, Polish Academy of Sciences, 01-224 Warsaw, Poland; (P.N.); (M.M.); (W.I.)
| | - Janusz Jurczak
- Institute of Organic Chemistry, Polish Academy of Sciences, 01-224 Warsaw, Poland; (P.N.); (M.M.); (W.I.)
| | - Kajetan Dąbrowa
- Institute of Organic Chemistry, Polish Academy of Sciences, 01-224 Warsaw, Poland; (P.N.); (M.M.); (W.I.)
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72
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Choi SH, Lee JS, Choi WJ, Seo JW, Choi SJ. Nanomaterials for IoT Sensing Platforms and Point-of-Care Applications in South Korea. SENSORS (BASEL, SWITZERLAND) 2022; 22:610. [PMID: 35062576 PMCID: PMC8781063 DOI: 10.3390/s22020610] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 01/07/2022] [Accepted: 01/08/2022] [Indexed: 05/03/2023]
Abstract
Herein, state-of-the-art research advances in South Korea regarding the development of chemical sensing materials and fully integrated Internet of Things (IoT) sensing platforms were comprehensively reviewed for verifying the applicability of such sensing systems in point-of-care testing (POCT). Various organic/inorganic nanomaterials were synthesized and characterized to understand their fundamental chemical sensing mechanisms upon exposure to target analytes. Moreover, the applicability of nanomaterials integrated with IoT-based signal transducers for the real-time and on-site analysis of chemical species was verified. In this review, we focused on the development of noble nanostructures and signal transduction techniques for use in IoT sensing platforms, and based on their applications, such systems were classified into gas sensors, ion sensors, and biosensors. A future perspective for the development of chemical sensors was discussed for application to next-generation POCT systems that facilitate rapid and multiplexed screening of various analytes.
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Affiliation(s)
- Seung-Ho Choi
- Division of Materials of Science and Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea; (S.-H.C.); (J.-S.L.); (W.-J.C.); (J.-W.S.)
| | - Joon-Seok Lee
- Division of Materials of Science and Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea; (S.-H.C.); (J.-S.L.); (W.-J.C.); (J.-W.S.)
| | - Won-Jun Choi
- Division of Materials of Science and Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea; (S.-H.C.); (J.-S.L.); (W.-J.C.); (J.-W.S.)
| | - Jae-Woo Seo
- Division of Materials of Science and Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea; (S.-H.C.); (J.-S.L.); (W.-J.C.); (J.-W.S.)
| | - Seon-Jin Choi
- Division of Materials of Science and Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea; (S.-H.C.); (J.-S.L.); (W.-J.C.); (J.-W.S.)
- Institute of Nano Science and Technology, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea
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73
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Wezenberg SJ, Chen LJ, Bos JE, Feringa BL, Howe ENW, Wu X, Siegler MA, Gale PA. Photomodulation of Transmembrane Transport and Potential by Stiff-Stilbene Based Bis(thio)ureas. J Am Chem Soc 2022; 144:331-338. [PMID: 34932344 PMCID: PMC8759083 DOI: 10.1021/jacs.1c10034] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Indexed: 12/14/2022]
Abstract
Membrane transport proteins fulfill important regulatory functions in biology with a common trait being their ability to respond to stimuli in the environment. Various small-molecule receptors, capable of mediating transmembrane transport, have been successfully developed. However, to confer stimuli-responsiveness on them poses a fundamental challenge. Here we demonstrate photocontrol of transmembrane transport and electric potential using bis(thio)ureas derived from stiff-stilbene. UV-vis and 1H NMR spectroscopy are used to monitor E-Z photoisomerization of these bis(thio)ureas and 1H NMR titrations reveal stronger binding of chloride to the (Z)-form than to the (E)-form. Additional insight into the binding properties is provided by single crystal X-ray crystallographic analysis and DFT geometry optimization. Importantly, the (Z)-isomers are much more active in transmembrane transport than the respective (E)-isomers as shown through various assays. As a result, both membrane transport and depolarization can be modulated upon irradiation, opening up new prospects toward light-based therapeutics as well as physiological and optopharmacological tools for studying anion transport-associated diseases and to stimulate neuronal activity, respectively.
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Affiliation(s)
- Sander J. Wezenberg
- Leiden
Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands
- Stratingh
Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Li-Jun Chen
- School
of Chemistry, The University of Sydney, Sydney NSW 2006, Australia
| | - Jasper E. Bos
- Leiden
Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands
| | - Ben L. Feringa
- Stratingh
Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Ethan N. W. Howe
- School
of Chemistry, The University of Sydney, Sydney NSW 2006, Australia
| | - Xin Wu
- School
of Chemistry, The University of Sydney, Sydney NSW 2006, Australia
| | - Maxime A. Siegler
- Department
of Chemistry, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States
| | - Philip A. Gale
- School
of Chemistry, The University of Sydney, Sydney NSW 2006, Australia
- The
University of Sydney Nano Institute (SydneyNano), The University of
Sydney, Sydney NSW 2006, Australia
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74
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Quílez-Alburquerque J, García-Iriepa C, Marazzi M, Descalzo AB, Orellana G. Interaction of a 1,3-Dicarbonyl Toxin with Ru(II)-Biimidazole Complexes for Luminescence Sensing: A Spectroscopic and Photochemical Experimental Study Rationalized by Time-Dependent Density Functional Theory Calculations. Inorg Chem 2022; 61:328-337. [PMID: 34923820 PMCID: PMC8753653 DOI: 10.1021/acs.inorgchem.1c02887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Indexed: 12/05/2022]
Abstract
A family of ruthenium(II) complexes containing one 2,2'-biimidazole (bim) ligand and two polypyridyl (NN) ligands has been prepared and their photophysical and photochemical features have been tested in the presence of tenuazonic acid (TeA), a widespread food and feed mycotoxin of current concern. While not tested in in vivo studies, TeA and other secondary metabolites of Alternaria fungi are suspected to exert adverse effects on the human health, so sensors and rapid analytical procedures are required. It is well-known that 1,3-dicarbonyl compounds such as TeA are relatively easy to deprotonate (the pKa of TeA is 3.5), yielding an enolate anion stabilized by resonance. The chelating and hydrogen-donor features of bim allow simultaneous binding to the metal core and to the target β-diketonate delocalized anion. Such a binding induces changes in the blue absorption (40 nm bathochromic shift), red luminescence intensity (>75% quenching), and triplet lifetime (0.2 μs decrease) of the Ru(NN)2(bim)2+ luminophore. Moreover, we have computationally rationalized, by time-dependent density functional theory, the structure of the different adducts of Ru-bim complexes with TeA and the electronic nature of the spectral absorption bands and their change upon the addition of TeA.
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Affiliation(s)
- José Quílez-Alburquerque
- Department
of Organic Chemistry, Faculty of Chemistry, Universidad Complutense de Madrid, Madrid 28040, Spain
| | - Cristina García-Iriepa
- Departamento
de Química Analítica, Química Física e
Ingeniería Química, Universidad
de Alcalá, Alcalá
de Henares (Madrid) 28871, Spain
- Instituto
de Investigación Química “Andrés M. del
Río” (IQAR), Universidad de
Alcalá, Alcalá de
Henares (Madrid) 28871, Spain
| | - Marco Marazzi
- Departamento
de Química Analítica, Química Física e
Ingeniería Química, Universidad
de Alcalá, Alcalá
de Henares (Madrid) 28871, Spain
- Instituto
de Investigación Química “Andrés M. del
Río” (IQAR), Universidad de
Alcalá, Alcalá de
Henares (Madrid) 28871, Spain
| | - Ana B. Descalzo
- Department
of Organic Chemistry, Faculty of Chemistry, Universidad Complutense de Madrid, Madrid 28040, Spain
| | - Guillermo Orellana
- Department
of Organic Chemistry, Faculty of Chemistry, Universidad Complutense de Madrid, Madrid 28040, Spain
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75
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Wenzel M, Steup J, Ohto K, Weigand JJ. Recent Advances in Guanidinium Salt Based Receptors and Functionalized Materials for the Recognition of Anions. CHEM LETT 2022. [DOI: 10.1246/cl.210527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Marco Wenzel
- Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, 01062 Dresden, Germany
| | - Johannes Steup
- Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, 01062 Dresden, Germany
| | - Keisuke Ohto
- Department of Chemistry and Applied Chemistry, Saga University, 1-Honjo, Saga 840-8502, Japan
| | - Jan J. Weigand
- Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, 01062 Dresden, Germany
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76
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Arora S, Talwar D, Chetal M, Bhardwaj VK, Dawar A, Sidhu H, Kashyap S, Capalash N. Binding of periodate by non–covalent interaction: Synthesis, characterization, single crystal structure determination, antibacterial and anticancer studies of [Co(bpy)2CO3].IO4. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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77
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Aizawa T, Akine S, Saiki T, Nakamura T, Nabeshima T. Rotaxane formation by an allosteric pseudomacrocyclic anion receptor utilising kinetically labile copper( i) coordination properties. Dalton Trans 2022; 51:17277-17282. [DOI: 10.1039/d2dt03331c] [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
A pseudomacrocyclic receptor with hydrogen bonding units spontaneously generates a rotaxane with an anionic axle possessing large end groups.
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Affiliation(s)
- Taeko Aizawa
- Faculty of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| | - Shigehisa Akine
- Graduate School of Natural Science and Technology and WPI Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Toshiyuki Saiki
- Faculty of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| | - Takashi Nakamura
- Faculty of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| | - Tatsuya Nabeshima
- Faculty of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
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78
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Macreadie LK, Gilchrist AM, McNaughton DA, Ryder WG, Fares M, Gale PA. Progress in anion receptor chemistry. Chem 2022. [DOI: 10.1016/j.chempr.2021.10.029] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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79
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Guajardo Maturana R, Ortolan AO, Rodríguez-Kessler PL, Caramori GF, Parreira RLT, Muñoz-Castro A. Nature of hydride and halide encapsulation in Ag 8 cages: insights from the structure and interaction energy of [Ag 8(X){S 2P(O iPr) 2} 6] + (X = H -, F -, Cl -, Br -, I -) from relativistic DFT calculations. Phys Chem Chem Phys 2021; 24:452-458. [PMID: 34897316 DOI: 10.1039/d1cp04249a] [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
Unraveling the different contributing terms to an efficient anion encapsulation is a relevant issue for further understanding of the underlying factors governing the formation of endohedral species. Herein, we explore the favorable encapsulation of hydride and halide anions in the [Ag8(X){S2P(OPr)2}6]+ (X- = H, 1, F, 2, Cl, 3, Br, 4, and, I, 5) series on the basis of relativistic DFT-D level of theory. The resulting Ag8-X interaction is sizable, which decreases along the series: -232.2 (1) > -192.1 (2) > -165.5 (3) > -158.0 (4) > -144.2 kcal mol-1 (5), denoting a more favorable inclusion of hydride and fluoride anions within the silver cage. Such interaction is mainly stabilized by the high contribution from electrostatic type interactions (80.9 av%), with a lesser contribution from charge-transfer (17.4 av%) and London type interactions (1.7 av%). Moreover, the ionic character of the electrostatic contributions decreases from 90.7% for hydride to 68.6% for the iodide counterpart, in line with the decrease in hardness according to the Pearson's acid-base concept (HSAB) owing to the major role of higher electrostatic interaction terms related to the softer (Lewis) bases. Lastly, the [Ag8{S2P(OPr)2}6]2+ cluster is able to adapt its geometry in order to maximize the interaction towards respective monoatomic anion, exhibiting structural flexibility. Such insights shed light on the physical reasoning necessary for a better understanding of the different stabilizing and destabilizing contributions related to metal-based cavities towards favorable incorporation of different monoatomic anions.
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Affiliation(s)
- Raul Guajardo Maturana
- Universidad SEK, Facultad de Ciencias de la Salud, Instituto de Investigación Interdisciplinaren Ciencias Biomédicas SEK (I3CBSEK) Chile, Fernando Manterola 0789, Providencia, Santiago, Chile
| | - Alexandre O Ortolan
- Departamento de Química, Universidade Federal de Santa Catarina, Campus Universitário Trindade, CP 476, Florianópolis, SC, 88040-900, Brazil.
| | - Peter L Rodríguez-Kessler
- Laboratorio de Química Inorgánica y Materiales Moleculares, Facultad de Ingenieria, Universidad Autonoma de Chile, Llano Subercaceaux 2801, San Miguel, Santiago, Chile.
| | - Giovanni F Caramori
- Departamento de Química, Universidade Federal de Santa Catarina, Campus Universitário Trindade, CP 476, Florianópolis, SC, 88040-900, Brazil.
| | - Renato L T Parreira
- Núcleo de Pesquisa em Ciências Exatas e Tecnológicas, Universidade de Franca, Franca, SP, 14404-600, Brazil.
| | - Alvaro Muñoz-Castro
- Laboratorio de Química Inorgánica y Materiales Moleculares, Facultad de Ingenieria, Universidad Autonoma de Chile, Llano Subercaceaux 2801, San Miguel, Santiago, Chile.
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80
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Xiong S, He Q. Photoresponsive macrocycles for selective binding and release of sulfate. Chem Commun (Camb) 2021; 57:13514-13517. [PMID: 34842255 DOI: 10.1039/d1cc05506b] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A series of new photoresponsive macrocyclic anion receptors were synthesized via integration of an azobenzene unit and multiple anion binding sites. They exhibited highly selective binding to dianionic sulfate over other tested anions and the reversible release of sulfate could be triggered by visible light as inferred from mass spectroscopy, crystallographical analysis, NMR spectroscopy, and theoretical calculations.
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Affiliation(s)
- Shenglun Xiong
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineer Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, No. 2 Lushan Road (S), Yuelu District, Changsha 410082, P. R. China.
| | - Qing He
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineer Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, No. 2 Lushan Road (S), Yuelu District, Changsha 410082, P. R. China.
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81
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Dolgushin FM, Eremenko IL. Structural chemistry of host – guest molecular architectures based on mercury-containing macrocycles. RUSSIAN CHEMICAL REVIEWS 2021. [DOI: 10.1070/rcr4998] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Abstract
Metallomacrocycles that include several metal ions with the Lewis acid properties are peculiar antipodes of crown ethers (referred to as ‘anticrowns’ in the literature). Recently these architectures have been extensively investigated when searching for efficient and selective anion receptors. In this review, we analyze the data on the molecular and crystal structures of supramolecular complexes of mercury-containing macrocycles (hosts) with anions or neutral nucleophiles (guests). The emphasis is on the identification and systematization of the structure types of complexes in dependence of the guest molecule nature, as well as the macrocycle composition and structure. The factors affecting the selectivity of coordination and competitive ability of various electron donor moieties of guest molecules to binding to the macrocycle are considered. The data in the literature on the nonvalent host – guest and host – host interactions, which are responsible for the formation of molecular complexes and their supramolecular association in crystals, are analyzed. The formulated structural regularities of these coordination compounds with an unusual type of molecular architecture open ways to design directly promising molecular materials on their basis.
The bibliography includes 161 references.
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82
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Sandler I, Sharma S, Chan B, Ho J. Accurate Quantum Chemical Prediction of Gas-Phase Anion Binding Affinities and Their Structure-Binding Relationships. J Phys Chem A 2021; 125:9838-9851. [PMID: 34739245 DOI: 10.1021/acs.jpca.1c06648] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This paper systematically examines the performance of contemporary wavefunction and density functional theory methods to identify robust and cost-efficient methods for predicting gas-phase anion binding energies. This includes the local coupled cluster LNO-CCSD(T) and DLPNO-CCSD(T), as well as double-hybrid DSD-PBEP86-D3(BJ) and various hybrid functionals M06-2X, B3LYP-D3(BJ), ωB97M-V, and ωB97X-V. The focus is on dual-hydrogen-bonding anion receptors that are commonly found in supramolecular chemistry and organocatalysis, namely, (thio)ureas, deltamides, (thio)squaramides, and croconamides as well as the yet-to-be-explored rhodizonamides. Of the methods examined, M06-2X emerged as the overall best performing method as the other functionals including DSD-PBEP86-D3(BJ) and the local coupled cluster DLPNO-CCSD(T) method displayed systematic errors that increase with the degree of carbonylation of the receptors. Hybrid ONIOM models that employed semiempirical methods (PM7, GFN1-xTB, and GFN2-xTB) and "threefold"-corrected small-basis set potentials (HF-3c, B97-3c, and PBEh-3c) were explored, and the best models resulted in 50- to 500-fold reduction in CPU time compared to W1-local. These calculations provide important insight into the structure-binding relationships where there is a direct correlation between Brønsted acidity and anion binding affinity, though the strength of the correlation also depends on other factors such as hydrogen-bonding geometry and the geometrical distortion that the receptor needs to undergo to bind the anion.
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Affiliation(s)
- Isolde Sandler
- School of Chemistry, The University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Shaleen Sharma
- School of Chemistry, The University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Bun Chan
- Graduate School of Engineering, Nagasaki University, Bukyo-Machi 1-14, Nagasaki 852-8521, Japan
| | - Junming Ho
- School of Chemistry, The University of New South Wales, Sydney, New South Wales 2052, Australia
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83
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Gilchrist AM, Wang P, Carreira-Barral I, Alonso-Carrillo D, Wu X, Quesada R, Gale PA. Supramolecular methods: the 8-hydroxypyrene-1,3,6-trisulfonic acid (HPTS) transport assay. Supramol Chem 2021. [DOI: 10.1080/10610278.2021.1999956] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
| | - Patrick Wang
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
| | | | | | - Xin Wu
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
| | - Roberto Quesada
- Departmento De Química, Universidad De Burgos, Burgos, Spain
| | - Philip A. Gale
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
- The University of Sydney Nano Institute (Sydney Nano), The University of Sydney, Sydney, NSW 2006, Australia
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84
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Bunchuay T, Docker A, White NG, Beer PD. A new halogen bonding 1,2-iodo-triazolium-triazole benzene motif for anion recognition. Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115482] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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85
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de Azevedo Santos L, Cesario D, Vermeeren P, van der Lubbe SCC, Nunzi F, Fonseca Guerra C. σ-Electrons Responsible for Cooperativity and Ring Equalization in Hydrogen-Bonded Supramolecular Polymers. Chempluschem 2021; 87:e202100436. [PMID: 34709769 DOI: 10.1002/cplu.202100436] [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: 09/29/2021] [Revised: 10/18/2021] [Indexed: 11/08/2022]
Abstract
We have quantum chemically analyzed the cooperative effects and structural deformations of hydrogen-bonded urea, deltamide, and squaramide linear chains using dispersion-corrected density functional theory at BLYP-D3(BJ)/TZ2P level of theory. Our purpose is twofold: (i) reveal the bonding mechanism of the studied systems that lead to their self-assembly in linear chains; and (ii) rationalize the C-C bond equalization in the ring moieties of deltamide and squaramide upon polymerization. Our energy decomposition and Kohn-Sham molecular orbital analyses reveal cooperativity in all studied systems, stemming from the charge separation within the σ-electronic system by charge transfer from the carbonyl oxygen lone pair donor orbital of one monomer towards the σ* N-H antibonding acceptor orbital of the neighboring monomer. This key orbital interaction causes the C=O bonds to elongate, which, in turn, results in the contraction of the adjacent C-C single bonds that, ultimately, makes the ring moieties of deltamide and squaramide to become more regular. Notably, the π-electron delocalization plays a much smaller role in the total interaction between the monomers in the chain.
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Affiliation(s)
- Lucas de Azevedo Santos
- Department of Theoretical Chemistry, Amsterdam Institute for Molecular and Life Sciences (AIMMS) Amsterdam Center for Multiscale Modeling (ACMM), Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081, HV Amsterdam, The Netherlands
| | - Diego Cesario
- Department of Theoretical Chemistry, Amsterdam Institute for Molecular and Life Sciences (AIMMS) Amsterdam Center for Multiscale Modeling (ACMM), Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081, HV Amsterdam, The Netherlands
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Via Elce di Sotto 8, I-06123, Perugia, Italy
| | - Pascal Vermeeren
- Department of Theoretical Chemistry, Amsterdam Institute for Molecular and Life Sciences (AIMMS) Amsterdam Center for Multiscale Modeling (ACMM), Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081, HV Amsterdam, The Netherlands
| | - Stephanie C C van der Lubbe
- Department of Theoretical Chemistry, Amsterdam Institute for Molecular and Life Sciences (AIMMS) Amsterdam Center for Multiscale Modeling (ACMM), Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081, HV Amsterdam, The Netherlands
| | - Francesca Nunzi
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Via Elce di Sotto 8, I-06123, Perugia, Italy
- Istituto di Scienze e Tecnologie Chimiche "Giulio Natta" (CNR-SCITEC), Via Elce di Sotto 8, 06123, Perugia, Italy
| | - Célia Fonseca Guerra
- Department of Theoretical Chemistry, Amsterdam Institute for Molecular and Life Sciences (AIMMS) Amsterdam Center for Multiscale Modeling (ACMM), Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081, HV Amsterdam, The Netherlands
- Leiden Institute of Chemistry, Gorlaeus Laboratories, Leiden University, Einsteinweg 55, 2333, CC Leiden, The Netherlands
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86
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Utilizing an Amino Acid Scaffold to Construct Heteroditopic Receptors Capable of Interacting with Salts under Interfacial Conditions. Int J Mol Sci 2021; 22:ijms221910754. [PMID: 34639095 PMCID: PMC8509731 DOI: 10.3390/ijms221910754] [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: 08/29/2021] [Revised: 09/28/2021] [Accepted: 09/29/2021] [Indexed: 11/17/2022] Open
Abstract
A 4-nitro-L-phenylalanine scaffold was used to construct effective ion pair receptors capable of binding anions in an enhanced manner with the assistance of alkali metal cations. A benzocrown ether was linked to a receptor platform via the amide function so as to support the squaramide function in anion binding and to allow all three NHs to act simultaneously. The binding properties of the receptors were determined using UV-vis, 1H NMR, 2D NMR, and DOSY spectroscopy in MeCN and in the solid state by X-ray measurements. Ion pair receptor 2 was found to interact with the most strongly with salts, and the removal of its key structural elements was shown to hinder the receptor action. The amide proton was recognized to switch from having involvement in an intramolecular hydrogen bond to interacting with anions upon complexation. Apart from carboxylates, which promote deprotonation, and other monovalent salts creating 1:1 complexes with the receptor, more complex equilibria were established upon the complexation of 2 with sulfates. Receptor 2 was shown to be capable of the extraction of ion pairs from the aqueous to organic phase and of the cation-enhanced transport chloride and sulfate anions across a bulk chloroform membrane. These features may open the door for its use in regulating ion concertation under interfacial conditions and acting as a potential drug to treat channelopathies.
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87
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Nakamura T. Development of Artificial Receptors Based on Assembly of Metal Complex Units and Desymmetrization of Molecular Components. CHEM LETT 2021. [DOI: 10.1246/cl.210418] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Takashi Nakamura
- Faculty of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
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88
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Ahmad M, Chattopadhayay S, Mondal D, Vijayakanth T, Talukdar P. Stimuli-Responsive Anion Transport through Acylhydrazone-Based Synthetic Anionophores. Org Lett 2021; 23:7319-7324. [PMID: 34519509 DOI: 10.1021/acs.orglett.1c02249] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Photoswitchable acylhydrazone-based synthetic anionophores are reported. Single-crystal X-ray structure and 1H NMR titration studies confirmed the chloride binding in solid and solution states. The ion transport activity of 1a was greatly attenuated through a phototriggered E to Z photoisomerization process, and the photoisomerized deactivated state showed high kinetic stability due to an intramolecular hydrogen bond. Switchable "OFF-ON" transport activity was achieved by the application of light and acid-catalyzed reactivation process.
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Affiliation(s)
- Manzoor Ahmad
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, Maharashtra, India
| | - Sandip Chattopadhayay
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, Maharashtra, India
| | - Debashis Mondal
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, Maharashtra, India
| | - Thangavel Vijayakanth
- The Shmunis School of Biomedicine and Cancer Research, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Pinaki Talukdar
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, Maharashtra, India
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89
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Liu W, Tan Y, Jones LO, Song B, Guo QH, Zhang L, Qiu Y, Feng Y, Chen XY, Schatz GC, Stoddart JF. PCage: Fluorescent Molecular Temples for Binding Sugars in Water. J Am Chem Soc 2021; 143:15688-15700. [PMID: 34505510 DOI: 10.1021/jacs.1c06333] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The development of synthetic receptors that recognize carbohydrates in water with high selectivity and specificity is challenging on account of their structural complexity and strong hydrophilicity. Here, we report on the design and synthesis of two pyrene-based, temple-shaped receptors for the recognition of a range of common sugars in water. These receptors rely on the use of two parallel pyrene panels, which serve as roofs and floors, capable of forming multiple [C-H···π] interactions with the axially oriented C-H bonds on glycopyranosyl rings in the carbohydrate-based substrates. In addition, eight polarized pyridinium C-H bonds, projecting from the roofs and floors of the temple receptors toward the binding cavities, form [C-H···O] hydrogen bonds, with the equatorially oriented OH groups on the sugars located inside the hydrophobic cavities. Four para-xylylene pillars play a crucial role in controlling the distance between the roof and floor. These temple receptors are highly selective for the binding of glucose and its derivatives. Furthermore, they show enhanced fluorescence upon binding with glucose in water, a property which is useful for glucose-sensing in aqueous solution.
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Affiliation(s)
- Wenqi Liu
- Department of Chemistry, 2145 Sheridan Road, Northwestern University, Evanston, Illinois 60208, United States
| | - Yu Tan
- School of Chemical Engineering and Technology, Sun Yat-sen University, Zhuhai 519082, China
| | - Leighton O Jones
- Department of Chemistry, 2145 Sheridan Road, Northwestern University, Evanston, Illinois 60208, United States
| | - Bo Song
- Department of Chemistry, 2145 Sheridan Road, Northwestern University, Evanston, Illinois 60208, United States
| | - Qing-Hui Guo
- Stoddart Institute of Molecular Science, Department of Chemistry, Zhejiang University, Hangzhou 310027, China.,ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou 311215, China
| | - Long Zhang
- Department of Chemistry, 2145 Sheridan Road, Northwestern University, Evanston, Illinois 60208, United States
| | - Yunyan Qiu
- Department of Chemistry, 2145 Sheridan Road, Northwestern University, Evanston, Illinois 60208, United States
| | - Yuanning Feng
- Department of Chemistry, 2145 Sheridan Road, Northwestern University, Evanston, Illinois 60208, United States
| | - Xiao-Yang Chen
- Department of Chemistry, 2145 Sheridan Road, Northwestern University, Evanston, Illinois 60208, United States
| | - George C Schatz
- Department of Chemistry, 2145 Sheridan Road, Northwestern University, Evanston, Illinois 60208, United States
| | - J Fraser Stoddart
- Department of Chemistry, 2145 Sheridan Road, Northwestern University, Evanston, Illinois 60208, United States.,School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia.,Stoddart Institute of Molecular Science, Department of Chemistry, Zhejiang University, Hangzhou 310027, China.,ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou 311215, China
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90
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Docker A, Guthrie CH, Kuhn H, Beer PD. Modulating Chalcogen Bonding and Halogen Bonding Sigma-Hole Donor Atom Potency and Selectivity for Halide Anion Recognition. Angew Chem Int Ed Engl 2021; 60:21973-21978. [PMID: 34297867 PMCID: PMC8518858 DOI: 10.1002/anie.202108591] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Indexed: 12/20/2022]
Abstract
A series of acyclic anion receptors containing chalcogen bond (ChB) and halogen bond (XB) donors integrated into a neutral 3,5‐bis‐triazole pyridine scaffold are described, in which systematic variation of the electronic‐withdrawing nature of the aryl substituents reveal a dramatic modulation in sigma‐hole donor atom potency for anion recognition. Incorporation of strongly electron‐withdrawing perfluorophenyl units appended to the triazole heterocycle telluro‐ or iodo‐ donor atoms, or directly linked to the tellurium donor atom dramatically enhances the anion binding potency of the sigma‐hole receptors, most notably for the ChB and XB receptors displaying over thirty‐fold and eight‐fold increase in chloride anion affinity, respectively, relative to unfluorinated analogues. Linear free energy relationships for a series of ChB based receptors reveal the halide anion recognition behaviour of the tellurium donor is highly sensitive to local electronic environments. This is especially the case for those directly appended to the Te centre (3⋅ChB), where a remarkable enhancement of strength of binding and selectivity for the lighter halides is observed as the electron‐withdrawing ability of the Te‐bonded aryl group increases, highlighting the exciting opportunity to fine‐tune anion affinity and selectivity in ChB‐based receptor systems.
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Affiliation(s)
- Andrew Docker
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA, UK
| | - Charles H Guthrie
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA, UK
| | - Heike Kuhn
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA, UK
| | - Paul D Beer
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA, UK
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91
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Pacheco-Liñán PJ, Alonso-Moreno C, Carrillo-Hermosilla F, Garzón-Ruiz A, Martín C, Sáez C, Albaladejo J, Bravo I. Novel Fluorescence Guanidine Molecules for Selective Sulfate Anion Detection in Water Complex Samples over a Wide pH Range. ACS Sens 2021; 6:3224-3233. [PMID: 34464091 DOI: 10.1021/acssensors.1c00876] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Quantitative analysis of sulfate anions in water still remains an important challenge for the society. Among all the methodologies, the most successful one is based on optical supramolecular receptors because the presence of small concentrations of sulfate anion modifies the photophysical properties of the receptor. In this case, fluorescence anion sensors have been designed by the incorporation of guanidine motifs into fluorenyl cores. The photophysical behaviors of the new mono- (M) and bis-guanidine (B) derivatives were studied through pH dependence, solvent effects, and ion sensing on steady-state spectra and time-resolved fluorescence spectroscopy. In more detail, the results demonstrate that M is a highly selective and sensitive sulfate ion receptor in real water samples and, even more importantly, its function remains unchanged at different ranges of pH. The reason behind this resides on the fluorescence quenching produced by an internal charge-transfer process when the sulfate anion is complexed with M. It is worth noting that the global and partial affinity constants (1010 M-2 and 105 M-1, respectively) of complex formation are far above from the current sulfate sensors in water (104 M-1) which give an LOD of 0.10 μM in water with an analytical range of 2.5-10 μM. On the other hand, although it would seem, at first sight, that the B derivate will be the most promising one, the possibility of having two simultaneous protonation states reduces the complex formation and, therefore, its sensitivity to sulfate anions. The results presented here offer the possibility of using a new molecule in water environments, which opens the door to infinite applications such as the detection of trace amounts of sulfate ions in food or water.
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Affiliation(s)
- Pedro J. Pacheco-Liñán
- Departamento de Química-Física. Facultad de Farmacia de Albacete, Universidad de Castilla-La Mancha, Albacete 02071, Spain
| | - Carlos Alonso-Moreno
- Departamento de Inorgánica, Orgánica y Bioquímica. Centro de Innovación en Química Avanzada (ORFEO-CINQA). Facultad de Farmacia de Albacete, Universidad de Castilla-La Mancha, Albacete 02071, Spain
- Unidad NanoCRIB. Centro Regional de Investigaciones Biomédicas, Albacete 02071, Spain
| | - Fernando Carrillo-Hermosilla
- Departamento de Inorgánica, Orgánica y Bioquímica. Centro de Innovación en Química Avanzada (ORFEO-CINQA). Facultad de Ciencias y Tecnologías Químicas. Universidad de Castilla-La Mancha, Ciudad Real 13071, Spain
| | - Andrés Garzón-Ruiz
- Departamento de Química-Física. Facultad de Farmacia de Albacete, Universidad de Castilla-La Mancha, Albacete 02071, Spain
| | - Cristina Martín
- Departamento de Química-Física. Facultad de Farmacia de Albacete, Universidad de Castilla-La Mancha, Albacete 02071, Spain
- Unidad NanoCRIB. Centro Regional de Investigaciones Biomédicas, Albacete 02071, Spain
| | - Carla Sáez
- Departamento de Química-Física. Facultad de Farmacia de Albacete, Universidad de Castilla-La Mancha, Albacete 02071, Spain
- Unidad NanoCRIB. Centro Regional de Investigaciones Biomédicas, Albacete 02071, Spain
| | - José Albaladejo
- Departamento de Química Física, Facultad de Ciencias Químicas, Universidad de Castilla-La Mancha, Avenida Camilo José Cela, 10, Ciudad Real 13071, Spain
| | - Iván Bravo
- Departamento de Química-Física. Facultad de Farmacia de Albacete, Universidad de Castilla-La Mancha, Albacete 02071, Spain
- Unidad NanoCRIB. Centro Regional de Investigaciones Biomédicas, Albacete 02071, Spain
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92
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Heravi T, Shen J, Johnson S, Asplund MC, Dearden DV. Halide Size-Selective Binding by Cucurbit[5]uril-Alkali Cation Complexes in the Gas Phase. J Phys Chem A 2021; 125:7803-7812. [PMID: 34492182 DOI: 10.1021/acs.jpca.1c05060] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
We report data that suggest complexes with alkali cations capping the portals of cucurbit[5]uril (CB[5]) bind halide anions size-selectively as observed in the gas phase: Cl- binds inside the CB[5] cavity, Br- is observed both inside and outside, and I- binds weakly outside. This is reflected in sustained off-resonance irradiation collision-induced dissociation (SORI-CID) experiments: all detected Cl- complexes dissociate at higher energies, and Br- complexes exhibit unusual bimodal dissociation behavior, with part of the ion population dissociating at very low energies and the remainder dissociating at significantly higher energies comparable to those observed for Cl-. Decoherence cross sections measured in SF6 using cross-sectional areas by Fourier transform ion cyclotron resonance techniques for [CB[5] + M2X]+ (M = Na, X = Cl or Br) are comparable to or less than that of [CB[5] + Na]+ over a wide energy range, suggesting that Cl- or Br- in these complexes are bound inside the CB[5] cavity. In contrast, [CB[5] + K2Br]+ has a cross section measured about 20% larger than that of [CB[5] + Na]+, suggesting external binding that may correspond with the weakly bound component seen in SORI. While I- complexes with alkali cation caps were not observed, alkaline earth iodides with CB[5] yielded complexes with cross sections 5-10% larger than that of [CB[5] + Na]+, suggesting externally bound iodide. Geometry optimization at the M06-2X/6-31+G* level of ab initio theory suggests that internal anion binding is energetically favored by approximately 50-200 kJ mol-1 over external binding; thus, the externally bound complexes observed experimentally must be due to large energetic barriers hindering the passing of large anions through the CB[5] portal, preventing access to the interior. Calculation of the barriers to anion egress using MMFF//M06-2X/6-31+G* theory supports this idea and suggests that the size-selective binding we observe is due to anion size-dependent differences in the barriers.
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Affiliation(s)
- Tina Heravi
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - Jiewen Shen
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - Spencer Johnson
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - Matthew C Asplund
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - David V Dearden
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602, United States
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93
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Al Isawi WA, Salome AZ, Ahmed BM, Zeller M, Mezei G. Selective binding of anions by rigidified nanojars: sulfate vs. carbonate. Org Biomol Chem 2021; 19:7641-7654. [PMID: 34524323 DOI: 10.1039/d1ob01318a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Selective binding and transport of highly hydrophilic anions is ubiquitous in nature, as anion binding proteins can differentiate between similar anions with over a million-fold efficiency. While comparable selectivity has occasionally been achieved for certain anions using small, artificial receptors, the selective binding of certain anions, such as sulfate in the presence of carbonate, remains a very challenging task. Nanojars of the formula [anion⊂{Cu(OH)(pz)}n]2- (pz = pyrazolate; n = 27-33) are totally selective for either CO32- or SO42- over anions such as NO3-, ClO4-, BF4-, Cl-, Br- and I-, but cannot differentiate between the two. We hypothesized that rigidification of the nanojar outer shell by tethering pairs of pyrazole moieties together will restrict the possible orientations of the OH hydrogen-bond donor groups in the anion-binding cavity of nanojars, similarly to anion-binding proteins, and will lead to selectivity. Indeed, by using either homoleptic or heteroleptic nanojars of the general formula [anion⊂Cun(OH)n(L2-L6)y(pz)n-2y]2- (n = 26-31) based on a series of homologous ligands HpzCH2(CH2)xCH2pzH (x = 0-4; H2L2-H2L6), selectivity for carbonate (with L2 and with L4-L6/pz mixtures) or for sulfate (with L3) has been achieved. The synthesis of new ligands H2L3, H2L4 and H2L5, X-ray crystal structures of H2L4 and the tetrahydropyranyl-protected derivatives (THP)2L4 and (THP)2L5, synthesis and characterization by electrospray-ionization mass spectrometry (ESI-MS) of carbonate- and sulfate-nanojars derived from ligands H2L2-H2L6, as well as detailed selectivity studies for CO32-vs. SO42- using these novel nanojars are presented.
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Affiliation(s)
- Wisam A Al Isawi
- Department of Chemistry, Western Michigan University, Kalamazoo, Michigan 49008, USA.
| | - Austin Z Salome
- Department of Chemistry, Western Michigan University, Kalamazoo, Michigan 49008, USA.
| | - Basil M Ahmed
- Department of Chemistry, Western Michigan University, Kalamazoo, Michigan 49008, USA.
| | - Matthias Zeller
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, USA
| | - Gellert Mezei
- Department of Chemistry, Western Michigan University, Kalamazoo, Michigan 49008, USA.
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94
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Miao W, Li Z, Yu C, Hao E, Jiao L. Synthesis of pyrrolyl-BODIPY dyes through regioselective SN Ar reactions and application as a fluorescent sensor for fluoride anion. J PORPHYR PHTHALOCYA 2021. [DOI: 10.1142/s1088424621501042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Two pyrrolyl-BODIPY dyes with 3,5-di-[Formula: see text]-butyl-4-hydroxyphenyl group were synthesized through stepwise S[Formula: see text]Ar reactions of 3,5-dibromoBODIPYs, which were used as a fluorescent sensor for basic anions. The intermediate pyrrolyl-BODIPYs 2a–2b were regioselectively synthesized through an efficient S[Formula: see text]Ar reaction between 3,5-dibromoBODIPY 1a and pyrroles. The target pyrrolyl-BODIPYs 3a–3b with a 3,5-di-[Formula: see text]-butyl-4-hydroxyphenyl group at 3-position and a pyrrole substituent at 5-position were obtained through a second S[Formula: see text]Ar reaction between pyrrolyl-BODIPYs 2a–2b and high steric hindrance 2,6-dibutylphenol in 90% and 88% yields, respectively. In contrast, the reaction between pyrrolyl-BODIPYs 2a–2b and phenol gave pyrrolyl-BODIPYs 3c–3d with phenoxy substituent at 3-position. These pyrrolyl-BODIPYs 3a–2d show strong, sharp absorptions (551–604 nm) and emissions (564–634 nm) with high fluorescence quantum yields up to 0.86 in dichloromethane. Importantly, the 3,5-di-[Formula: see text]-butyl-4-hydroxyphenyl group of pyrrolyl-BODIPY 3a showed a turn-off fluorescent response toward fluoride anion.
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Affiliation(s)
- Wei Miao
- Laboratory of Functionalized Molecular Solids, Ministry of Education, College of Chemistry and Material Science, Anhui Normal University, Wuhu, 241002, China
- Department of Nuclear Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, China
| | - Zhongxin Li
- Laboratory of Functionalized Molecular Solids, Ministry of Education, College of Chemistry and Material Science, Anhui Normal University, Wuhu, 241002, China
| | - Changjiang Yu
- Laboratory of Functionalized Molecular Solids, Ministry of Education, College of Chemistry and Material Science, Anhui Normal University, Wuhu, 241002, China
| | - Erhong Hao
- Laboratory of Functionalized Molecular Solids, Ministry of Education, College of Chemistry and Material Science, Anhui Normal University, Wuhu, 241002, China
| | - Lijuan Jiao
- Laboratory of Functionalized Molecular Solids, Ministry of Education, College of Chemistry and Material Science, Anhui Normal University, Wuhu, 241002, China
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95
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Vicent C, Valls A, Escorihuela J, Altava B, Luis S. Unveiling anion-induced folding in tripodal imidazolium receptors by ion-mobility mass spectrometry. Chem Commun (Camb) 2021; 57:8616-8619. [PMID: 34369516 DOI: 10.1039/d1cc02818a] [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
The anion-induced folding of tripodal imidazolium receptors has been investigated by NMR spectroscopy, electrospray ionization ion mobility mass spectrometry and DFT calculations. Such folding can be switched by anion release upon collision induced dissociation.
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Affiliation(s)
- Cristian Vicent
- Servei Central d'Instrumentació Científica (SCIC), Universitat Jaume I, Avda. Sos Baynat s/n, 12006 Castellón, Spain.
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96
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Al Isawi WA, Zeller M, Mezei G. Capped Nanojars: Synthesis, Solution and Solid-State Characterization, and Atmospheric CO 2 Sequestration by Selective Binding of Carbonate. Inorg Chem 2021; 60:13479-13492. [PMID: 34448565 DOI: 10.1021/acs.inorgchem.1c01826] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Nanojars are a class of supramolecular anion-incarcerating coordination complexes that self-assemble from Cu2+ ions, pyrazole, and a strong base in the presence of highly hydrophilic anions. In this work, we show that if the strong base (e.g., NaOH or Bu4NOH) is replaced by a weak base such as a trialkylamine, capped nanojars of the formula [{Cu3(μ3-OH)(μ-pz)3L3}CO3⊂{Cu(μ-OH)(μ-pz)}n] (pz = pyrazolate anion; L = neutral donor molecule; n = 27-31) are obtained instead of the conventional nanojars. Yet, to obtain capped nanojars, the conjugate acid side product originating from the weak base must be separated by transferring it to water either by precipitation of the water-insoluble capped nanojars or by liquid-liquid extraction. Full characterization using electrospray ionization mass spectrometry, UV-vis and variable-temperature 1H NMR spectroscopy in solution, and single-crystal X-ray diffraction, elemental analysis, and solubility studies in the solid state reveals similarities as well as drastic differences between capped nanojars and nanojars lacking the [Cu3(μ3-OH)(μ-pz)3L3]2+ cap. Acid-base reactivity studies demonstrate that capped nanojars are intermediates in the pH-controlled assembly-disassembly of nanojars. During the self-assembly of capped nanojars, CO2 is selectively sequestered from air in the presence of other atmospheric gases and converted to carbonate, the binding of which is selective in the presence of NO3-, ClO4-, BF4-, Cl-, and Br- ions.
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Affiliation(s)
- Wisam A Al Isawi
- Department of Chemistry, Western Michigan University, Kalamazoo, Michigan 49008, United States
| | - Matthias Zeller
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Gellert Mezei
- Department of Chemistry, Western Michigan University, Kalamazoo, Michigan 49008, United States
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97
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Supramolecular hydrogelation via host-guest anion recognition: Lamellar hydrogel materials for the release of cationic cargo. Chem 2021. [DOI: 10.1016/j.chempr.2021.06.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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98
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Docker A, Guthrie CH, Kuhn H, Beer PD. Modulating Chalcogen Bonding and Halogen Bonding Sigma‐Hole Donor Atom Potency and Selectivity for Halide Anion Recognition. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202108591] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Andrew Docker
- Department of Chemistry University of Oxford Chemistry Research Laboratory Mansfield Road Oxford OX1 3TA UK
| | - Charles H. Guthrie
- Department of Chemistry University of Oxford Chemistry Research Laboratory Mansfield Road Oxford OX1 3TA UK
| | - Heike Kuhn
- Department of Chemistry University of Oxford Chemistry Research Laboratory Mansfield Road Oxford OX1 3TA UK
| | - Paul D. Beer
- Department of Chemistry University of Oxford Chemistry Research Laboratory Mansfield Road Oxford OX1 3TA UK
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99
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Li C, Manick AD, Yang J, Givaudan D, Biletskyi B, Michaud-Chevalier S, Dutasta JP, Hérault D, Bugaut X, Chatelet B, Martinez A. The Chloroazaphosphatrane Motif for Halogen Bonding in Solution. Inorg Chem 2021; 60:11964-11973. [PMID: 34319095 DOI: 10.1021/acs.inorgchem.1c01005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Chloroazaphosphatranes, the corresponding halogenophosphonium cations of the Verkade superbases, were evaluated as a new motif for halogen bonding (XB). Their modulable synthesis allowed for synthetizing chloroazaphosphatranes with various substituents on the nitrogen atoms. The binding constants determined from NMR titration experiments for Cl-, Br-, I-, AcO-, and CN- anions are comparable to those obtained with conventional iodine-based monodentate XB receptors. Remarkably, the protonated azaphosphatrane counterparts display no affinity for anions under the same conditions. The strength of the XB interaction is, to some extent, related to the basicity of the corresponding Verkade superbase. The halogen bonding abilities of this new class of halogen donor motif were also revealed by the Δδ(31P) NMR shift observed in CD2Cl2 solution in the presence of triethylphosphine oxide (TEPO). Thus, chloroazaphosphatranes constitute a new class of halogen bond donors, expanding the repertory of XB motifs mainly based on CAr-I bonds.
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Affiliation(s)
- Chunyang Li
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France
| | | | - Jian Yang
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France
| | - David Givaudan
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France
| | - Bohdan Biletskyi
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France
| | | | - Jean-Pierre Dutasta
- Laboratoire de Chimie, École Normale Supérieure de Lyon, CNRS, 46 allée d'Italie, F-69364 Lyon, France
| | - Damien Hérault
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France
| | - Xavier Bugaut
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France
| | - Bastien Chatelet
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France
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100
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Wu H, Wang Y, Jones LO, Liu W, Zhang L, Song B, Chen XY, Stern CL, Schatz GC, Stoddart JF. Selective Separation of Hexachloroplatinate(IV) Dianions Based on Exo-Binding with Cucurbit[6]uril. Angew Chem Int Ed Engl 2021; 60:17587-17594. [PMID: 34031957 DOI: 10.1002/anie.202104646] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2021] [Revised: 05/13/2021] [Indexed: 01/10/2023]
Abstract
The recognition and separation of anions attracts attention from chemists, materials scientists, and engineers. Employing exo-binding of artificial macrocycles to selectively recognize anions remains a challenge in supramolecular chemistry. We report the instantaneous co-crystallization and concomitant co-precipitation between [PtCl6 ]2- dianions and cucurbit[6]uril, which relies on the selective recognition of these dianions through noncovalent bonding interactions on the outer surface of cucurbit[6]uril. The selective [PtCl6 ]2- dianion recognition is driven by weak [Pt-Cl⋅⋅⋅H-C] hydrogen bonding and [Pt-Cl⋅⋅⋅C=O] ion-dipole interactions. The synthetic protocol is highly selective. Recognition is not observed in combinations between cucurbit[6]uril and six other Pt- and Pd- or Rh-based chloride anions. We also demonstrated that cucurbit[6]uril is able to separate selectively [PtCl6 ]2- dianions from a mixture of [PtCl6 ]2- , [PdCl4 ]2- , and [RhCl6 ]3- anions. This protocol could be exploited to recover platinum from spent vehicular three-way catalytic converters and other platinum-bearing metal waste.
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Affiliation(s)
- Huang Wu
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL, 60208, USA
| | - Yu Wang
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL, 60208, USA
| | - Leighton O Jones
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL, 60208, USA
| | - Wenqi Liu
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL, 60208, USA
| | - Long Zhang
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL, 60208, USA
| | - Bo Song
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL, 60208, USA
| | - Xiao-Yang Chen
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL, 60208, USA
| | - Charlotte L Stern
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL, 60208, USA
| | - George C Schatz
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL, 60208, USA
| | - J Fraser Stoddart
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL, 60208, USA.,School of Chemistry, University of New South Wales, Sydney, NSW, 2052, Australia.,Institute of Molecular Science, Department of Chemistry, Zhejiang University, Hangzhou, 310027, China.,ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou, 311215, China
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