51
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Supramolecular Host–Guest Assemblies of [M6Cl14]2–, M = Mo, W, Clusters with γ-Cyclodextrin for the Development of CLUSPOMs. INORGANICS 2023. [DOI: 10.3390/inorganics11020077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023] Open
Abstract
Host–guest assemblies open up opportunities for developing novel functional CLUSPOM multicomponent systems based on transition metal clusters (CLUS), polyoxometalates (POMs) and macrocyclic organic ligands. In water–ethanol solution γ-cyclodextrin (γ-CD) interacts with halide metal clusters [M6Cl14]2– (M = Mo, W) to form sandwich-type structures. The supramolecular association between the clusters and CDs, however, remains weak in solution, and the interactions are not strong enough to prevent the hydrolysis of the inorganic guest. Although analysis of the resulting crystal structures reveals inclusion complexation, 1H NMR experiments in solution show no specific affinity between the two components. The luminescent properties of the host–guest compounds in comparison with the initial cluster complexes are also studied to evaluate the influence of CD.
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52
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Hohenschutz M, Bauduin P, Lopez CG, Förster B, Richtering W. Superchaotropic Nano-ion Binding as a Gelation Motif in Cellulose Ether Solutions. Angew Chem Int Ed Engl 2023; 62:e202210208. [PMID: 36346946 PMCID: PMC10107358 DOI: 10.1002/anie.202210208] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 10/19/2022] [Accepted: 11/08/2022] [Indexed: 11/10/2022]
Abstract
Nanometer-sized anions (nano-ions) like polyoxometalates and boron clusters exhibit so-called superchaotropic behavior, which describes their strong binding to hydrated non-ionic matter in water. We show here that nano-ions, at millimolar concentrations, dramatically enhance the viscosity and induce gelation of aqueous solutions of non-ionic cellulose ethers (CEs), a class of widely utilized polymers known for their thickening and gel-forming ability. These phenomena arise from an interplay of attractive forces and repulsive electrostatic forces between CE-chains upon nano-ion binding. The attractive forces manifest themselves as aggregation of CE-chains into a physically crosslinked polymer network (gel). In turn, the electrostatic repulsions hamper the viscosity increase and gelation. Superchaotropic nano-ion binding emerges as a novel and general physical crosslinking motif for CE-solutions and exceeds by far the conventional thickening effects of classical salts and ionic surfactants.
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Affiliation(s)
- Max Hohenschutz
- RWTH Aachen University, Institute of Physical Chemistry, Landoltweg 2, 52074, Aachen, Germany
| | - Pierre Bauduin
- Institut de Chimie Séparative de Marcoule, ICSM, CEA, CNRS, ENSCM, Univ Montpellier, Marcoule, France
| | - Carlos G Lopez
- RWTH Aachen University, Institute of Physical Chemistry, Landoltweg 2, 52074, Aachen, Germany
| | - Beate Förster
- Forschungszentrum Jülich GmbH, Ernst Ruska-Centrum für Mikroskopie und Spektroskopie mit Elektronen (ER-C-1), 52425, Jülich, Germany
| | - Walter Richtering
- RWTH Aachen University, Institute of Physical Chemistry, Landoltweg 2, 52074, Aachen, Germany.,DWI-Leibniz-Institute for Interactive Materials e.V., RWTH-Aachen University, Forckenbeckstraße 50, 52074, Aachen, Germany
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53
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Li MS, Dong YW, Pang XY, Chai H, Wang X, Jiang W. The Influence of Small Biomolecules, Salts and Buffers on the Molecular Recognition of Amide Naphthotube in Aqueous Solutions. Chemistry 2023; 29:e202202972. [PMID: 36196913 DOI: 10.1002/chem.202202972] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Indexed: 11/18/2022]
Abstract
We found the binding affinities of amide naphthotube to neutral organic molecules in water are not influenced by most of small biomolecules, inorganic salts, and PBS and Tris buffers but are reduced in HEPES buffer through competitive binding. Nevertheless, salts do change the binding affinities of amide naphthotube to charged molecules through a screening effect.
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Affiliation(s)
- Ming-Shuang Li
- Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, and Department of Chemistry, Southern University of Science and Technology (SUSTech), Xueyuan Blvd 1088, Shenzhen, 518055, P. R. China
| | - Yi-Wei Dong
- Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, and Department of Chemistry, Southern University of Science and Technology (SUSTech), Xueyuan Blvd 1088, Shenzhen, 518055, P. R. China
| | - Xin-Yu Pang
- Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, and Department of Chemistry, Southern University of Science and Technology (SUSTech), Xueyuan Blvd 1088, Shenzhen, 518055, P. R. China
| | - Hongxin Chai
- Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, and Department of Chemistry, Southern University of Science and Technology (SUSTech), Xueyuan Blvd 1088, Shenzhen, 518055, P. R. China.,Shenzhen Xinhua Middle School, Shenzhen, 518109, P. R. China
| | - Xiaoping Wang
- Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, and Department of Chemistry, Southern University of Science and Technology (SUSTech), Xueyuan Blvd 1088, Shenzhen, 518055, P. R. China
| | - Wei Jiang
- Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, and Department of Chemistry, Southern University of Science and Technology (SUSTech), Xueyuan Blvd 1088, Shenzhen, 518055, P. R. China
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54
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Hu JH, Yu ZC, Zhang JY, Liu ZN, Hou RX, Xiong Y, Redshaw C, Tao Z, Xiao X. Supramolecular self-assembly between symmetric tetramethyl cucurbit[6]uril and dimethylphenylpiperazine hydrochloride. Polyhedron 2023. [DOI: 10.1016/j.poly.2022.116241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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55
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Zhang J, Gabel D, Assaf KI, Nau WM. A Fluorescein-Substituted Perbrominated Dodecaborate Cluster as an Anchor Dye for Large Macrocyclic Hosts and Its Application in Indicator Displacement Assays. Org Lett 2022; 24:9184-9188. [PMID: 36507622 DOI: 10.1021/acs.orglett.2c03615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Perhalogenated boron clusters derived from B12Br122-, a superchaotropic dianion with a globular icosahedral shape, serve as inorganic cavity binders for cyclodextrins (CDs), in particular for large CDs (γ-CD and δ-CD), with high binding affinity (Ka > 106 M-1) in aqueous solution. This opens the door for applications of this anchoring moiety by linking it to organic residues, prominently fluorescent dyes. We report here the synthesis of a novel fluorescein-substituted perbrominated dodecaborate cluster by a copper(I)-catalyzed azide-alkyne click reaction. The formation of host-guest inclusion complexes between the dodecaborate-modified fluorescein dye and CDs can be readily followed by optical titrations, which afforded a binding constant of ∼1 × 104 M-1 with γ-CD; that is, the cluster functionalization allows binding of an otherwise nonbinding dye to the macrocycle ("anchor dye"). The formation of the 1:1 host-guest inclusion complex between the dye and γ-CD occurs over a broad range of pH values, which allows its application as a sensitive reporter pair according to the indicator displacement method, e.g., for drug detection. In addition, the substituted dye shows outer-wall binding to cucurbiturils through the dodecaborate moiety, leading to the formation of aggregates and significant fluorescence quenching of the dye.
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Affiliation(s)
- Jinling Zhang
- Jacobs University Bremen, School of Science, Campus Ring 1, 28759 Bremen, Germany
| | - Detlef Gabel
- Jacobs University Bremen, School of Science, Campus Ring 1, 28759 Bremen, Germany
| | - Khaleel I Assaf
- Department of Chemistry, Faculty of Science, Al-Balqa Applied University, 19117 Al-Salt, Jordan
| | - Werner M Nau
- Jacobs University Bremen, School of Science, Campus Ring 1, 28759 Bremen, Germany
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56
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Jiang Y, Cai Z, Yuan Q, Cao W, Hu Z, Sun H, Wang XB, Sun Z. Highly Structured Water Networks in Microhydrated Dodecaborate Clusters. J Phys Chem Lett 2022; 13:11787-11794. [PMID: 36516831 DOI: 10.1021/acs.jpclett.2c03537] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
We report a combined photoelectron spectroscopy and theoretical investigation of a series of size-selected hydrated closo-dodecaborate clusters B12X122-·nH2O (X = H, F, or I; n = 1-6). Distinct structural arrangements of water clusters from monomer to hexamer can be achieved by using different B12X122- bases, illustrating the evident solute specificity. Because B-H···H-O dihydrogen bonds are stronger than O···H-O hydrogen bonds in water, the added water molecules are arranged in a unified binding mode by forming highly structured water networks manipulated by B12H122-. As a comparison, the hydrated B12F122- clusters display similar water evolution for n values of 1 and 2 but different binding modes for larger clusters, while water networks in B12I122- share similarities with the free water clusters. This finding provides a consistent picture of the structural diversity of hydrogen bonding networks in microhydrated dodecaborates and a molecular-level understanding of microsolvation dynamics in aqueous borate chemistry.
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Affiliation(s)
- Yanrong Jiang
- State Key Laboratory of Precision Spectroscopy, School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China
- Center for Transformative Science, ShanghaiTech University, Shanghai 201210, China
| | - Zhaojie Cai
- State Key Laboratory of Precision Spectroscopy, School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China
| | - Qinqin Yuan
- Physical Sciences Division, Pacific Northwest National Laboratory, 902 Battelle Boulevard, P.O. Box 999, Richland, Washington 99352, United States
| | - Wenjin Cao
- Physical Sciences Division, Pacific Northwest National Laboratory, 902 Battelle Boulevard, P.O. Box 999, Richland, Washington 99352, United States
| | - Zhubin Hu
- State Key Laboratory of Precision Spectroscopy, School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China
| | - Haitao Sun
- State Key Laboratory of Precision Spectroscopy, School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China
- Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi 030006, China
- NYU-ECNU Center for Computational Chemistry at NYU Shanghai, Shanghai 200062, China
| | - Xue-Bin Wang
- Physical Sciences Division, Pacific Northwest National Laboratory, 902 Battelle Boulevard, P.O. Box 999, Richland, Washington 99352, United States
| | - Zhenrong Sun
- State Key Laboratory of Precision Spectroscopy, School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China
- Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi 030006, China
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57
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Horáček O, Nováková L, Tüzün E, Grüner B, Švec F, Kučera R. Advanced Tool for Chiral Separations of Anionic and Zwitterionic (Metalla)carboranes: Supercritical Fluid Chromatography. Anal Chem 2022; 94:17551-17558. [PMID: 36475613 DOI: 10.1021/acs.analchem.2c03895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The continuous expansion of research in the field of stable carboranes and their wide potential in the drug design require carrying out fundamental studies regarding their chiral separations. Although supercritical fluid chromatography (SFC) is a viable technique for fast enantioseparations, no investigation concerning boron cluster compounds has been done yet. We aimed at the development of a straightforward method enabling chiral separations of racemic mixtures of anionic cluster carboranes and metallacarboranes that represent an analytical challenge. The fast gradient screening testing nine polysaccharide-based columns was used. The key parameters affecting the selectivity were the type of chiral selector, the type of alcohol, and the base in cosolvent. Moreover, the addition of acetonitrile or water to the cosolvent was identified as an effective tool for decreasing the analysis time while preserving the resolution. After the optimization, the chiral separations of 19 out of 20 selected compounds were achieved in less than 10 min. These results demonstrate the clear advantage of SFC over chiral separations using HPLC in terms of both analysis time and structural variety of successfully separated compounds.
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Affiliation(s)
- Ondřej Horáček
- Department of Pharmaceutical Chemistry and Pharmaceutical Analysis, Faculty of Pharmacy in Hradec Králové, Charles University, 500 05 Hradec Králové, Czech Republic
| | - Lucie Nováková
- Department of Analytical Chemistry, Faculty of Pharmacy in Hradec Králové, Charles University, 500 05 Hradec Králové, Czech Republic
| | - Ece Tüzün
- Institute of Inorganic Chemistry, Czech Academy of Sciences, 25068 Řež, Czech Republic.,Department of Inorganic Chemistry, Faculty of Science, Charles University, Prague 2, 2030 Hlavova, Czech Republic
| | - Bohumír Grüner
- Institute of Inorganic Chemistry, Czech Academy of Sciences, 25068 Řež, Czech Republic
| | - František Švec
- Department of Analytical Chemistry, Faculty of Pharmacy in Hradec Králové, Charles University, 500 05 Hradec Králové, Czech Republic
| | - Radim Kučera
- Department of Pharmaceutical Chemistry and Pharmaceutical Analysis, Faculty of Pharmacy in Hradec Králové, Charles University, 500 05 Hradec Králové, Czech Republic
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58
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Casimiro A, Nijmeijer K. On the impact of the type of anion on the properties of solid-state electrolytes. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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59
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Fukunishi Y, Higo J, Kasahara K. Computer simulation of molecular recognition in biomolecular system: from in silico screening to generalized ensembles. Biophys Rev 2022; 14:1423-1447. [PMID: 36465086 PMCID: PMC9703445 DOI: 10.1007/s12551-022-01015-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 11/06/2022] [Indexed: 11/29/2022] Open
Abstract
Prediction of ligand-receptor complex structure is important in both the basic science and the industry such as drug discovery. We report various computation molecular docking methods: fundamental in silico (virtual) screening, ensemble docking, enhanced sampling (generalized ensemble) methods, and other methods to improve the accuracy of the complex structure. We explain not only the merits of these methods but also their limits of application and discuss some interaction terms which are not considered in the in silico methods. In silico screening and ensemble docking are useful when one focuses on obtaining the native complex structure (the most thermodynamically stable complex). Generalized ensemble method provides a free-energy landscape, which shows the distribution of the most stable complex structure and semi-stable ones in a conformational space. Also, barriers separating those stable structures are identified. A researcher should select one of the methods according to the research aim and depending on complexity of the molecular system to be studied.
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Affiliation(s)
- Yoshifumi Fukunishi
- Cellular and Molecular Biotechnology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 2-3-26, Aomi, Koto-Ku, Tokyo, 135-0064 Japan
| | - Junichi Higo
- Graduate School of Information Science, University of Hyogo, 7-1-28 Minatojima Minamimachi, Chuo-Ku, Kobe, Hyogo 650-0047 Japan ,Research Organization of Science and Technology, Ritsumeikan University, 1-1-1 Noji-Higashi, Kusatsu, Shiga 525-8577 Japan
| | - Kota Kasahara
- College of Life Sciences, Ritsumeikan University, 1-1-1 Noji-Higashi, Kusatsu, Shiga 525-8577 Japan
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60
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Ya. Zakharova L, Vasilieva EA, Mirgorodskaya AB, Zakharov SV, Pavlov RV, Kashapova NE, Gaynanova GA. Hydrotropes: solubilization of nonpolar compounds and modification of surfactant solutions. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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61
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Niu Z, You Z, Lu WW, Wang Z, Wang C. Preparation and characterisation of tough and porous polyvinyl alcohol/POC membrane for biomedical applications. BIOSURFACE AND BIOTRIBOLOGY 2022. [DOI: 10.1049/bsb2.12053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Zuoliang Niu
- State Key Laboratory of Oral Diseases West China Hospital of Stomatology Sichuan University Chengdu China
| | - Ziying You
- State Key Laboratory of Oral Diseases West China Hospital of Stomatology Sichuan University Chengdu China
| | - William W. Lu
- Department of Orthopaedics and Traumatology The University of Hong Kong Hong Kong China
| | - Zhenming Wang
- State Key Laboratory of Oral Diseases West China Hospital of Stomatology Sichuan University Chengdu China
| | - Chenglin Wang
- State Key Laboratory of Oral Diseases West China Hospital of Stomatology Sichuan University Chengdu China
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62
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Rando C, Vázquez J, Sokolov J, Kokan Z, Nečas M, Šindelář V. Highly Efficient and Selective Recognition of Dicyanoaurate(I) by a Bambusuril Macrocycle in Water. Angew Chem Int Ed Engl 2022; 61:e202210184. [DOI: 10.1002/anie.202210184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Indexed: 11/12/2022]
Affiliation(s)
- Carola Rando
- Department of Chemistry Faculty of Science Masaryk University Kamenice 5 62500 Brno Czech Republic
- RECETOX Faculty of Science Masaryk University Kamenice 5 62500 Brno Czech Republic
| | - Julián Vázquez
- Department of Chemistry Faculty of Science Masaryk University Kamenice 5 62500 Brno Czech Republic
- RECETOX Faculty of Science Masaryk University Kamenice 5 62500 Brno Czech Republic
| | - Jan Sokolov
- Department of Chemistry Faculty of Science Masaryk University Kamenice 5 62500 Brno Czech Republic
- RECETOX Faculty of Science Masaryk University Kamenice 5 62500 Brno Czech Republic
| | - Zoran Kokan
- Department of Chemistry Faculty of Science Masaryk University Kamenice 5 62500 Brno Czech Republic
- RECETOX Faculty of Science Masaryk University Kamenice 5 62500 Brno Czech Republic
| | - Marek Nečas
- Department of Chemistry Faculty of Science Masaryk University Kamenice 5 62500 Brno Czech Republic
| | - Vladimír Šindelář
- Department of Chemistry Faculty of Science Masaryk University Kamenice 5 62500 Brno Czech Republic
- RECETOX Faculty of Science Masaryk University Kamenice 5 62500 Brno Czech Republic
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63
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Fabre B, Falaise C, Cadot E. Polyoxometalates-Functionalized Electrodes for (Photo)Electrocatalytic Applications: Recent Advances and Prospects. ACS Catal 2022. [DOI: 10.1021/acscatal.2c01847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bruno Fabre
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226, F-35000 Rennes, France
| | - Clément Falaise
- Institut Lavoisier de Versailles (UMR-CNRS 8180), UVSQ, Université Paris-Saclay, 45 Avenue des Etats-Unis, 78000 Versailles, France
| | - Emmanuel Cadot
- Institut Lavoisier de Versailles (UMR-CNRS 8180), UVSQ, Université Paris-Saclay, 45 Avenue des Etats-Unis, 78000 Versailles, France
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64
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Two quality and stability indicating imaged CIEF methods for mRNA vaccines. Electrophoresis 2022; 43:1971-1983. [DOI: 10.1002/elps.202200123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 08/11/2022] [Accepted: 08/13/2022] [Indexed: 11/07/2022]
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65
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Rando C, Vázquez J, Sokolov J, Kokan Z, Necas M, Sindelar V. Highly Efficient and Selective Recognition of Dicyanoaurate(I) by a Bambusuril Macrocycle in Water. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202210184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Carola Rando
- Masaryk University Faculty of Science: Masarykova univerzita Prirodovedecka Fakulta Department of Chemistry CZECH REPUBLIC
| | - Julián Vázquez
- Masaryk University Faculty of Science: Masarykova univerzita Prirodovedecka Fakulta Department of Chemistry CZECH REPUBLIC
| | - Jan Sokolov
- Masaryk University Faculty of Science: Masarykova univerzita Prirodovedecka Fakulta Department of Chemistry CZECH REPUBLIC
| | - Zoran Kokan
- Masaryk University Faculty of Science: Masarykova univerzita Prirodovedecka Fakulta Deparment of Chemistry CZECH REPUBLIC
| | - Marek Necas
- Masaryk University Faculty of Science: Masarykova univerzita Prirodovedecka Fakulta Department of Chemistry CZECH REPUBLIC
| | - Vladimir Sindelar
- Masaryk University Department of Chemistry Kamenice 5 62500 Brno CZECH REPUBLIC
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66
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Ivanov AA, Haouas M, Evtushok DV, Pozmogova TN, Golubeva TS, Molard Y, Cordier S, Falaise C, Cadot E, Shestopalov MA. Stabilization of Octahedral Metal Halide Clusters by Host-Guest Complexation with γ-Cyclodextrin: Toward Nontoxic Luminescent Compounds. Inorg Chem 2022; 61:14462-14469. [PMID: 36041168 DOI: 10.1021/acs.inorgchem.2c02468] [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
γ-Cyclodextrin (γ-CD) interacts in aqueous solution with octahedral halide clusters Na2[{M6X8}Cl6] (M = Mo, W; X = Br, I) to form robust inclusion supramolecular complexes [{M6X8}Cl6@2γ-CD]2-. Single-crystal X-ray diffraction analyses revealed two conformational organizations within the adduct depending on the nature of the inner halide X within the {M6X8} core. Using 35Cl NMR and UV-vis as complementary techniques, the kinetics of the hydrolysis process were shown to increase with the following order: {W6I8} < {W6Br8} ≈ {Mo6I8} < {Mo6Br8}. The complexation with γ-CD drastically enhances the hydrolytic stability of luminescent [{M6X8}Cl6]2- cluster-based units, which was quantitatively proved by the same techniques. The resulting host-guest complexation provides a protective shell against contact with water and offers promising horizons for octahedral clusters in biology as revealed by the low dark cytotoxicity and cellular uptake.
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Affiliation(s)
- Anton A Ivanov
- Institut Lavoisier de Versailles, UMR 8180 CNRS, UVSQ, Université Paris-Saclay, 78035 Versailles, France.,Nikolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk 630090, Russia
| | - Mohamed Haouas
- Institut Lavoisier de Versailles, UMR 8180 CNRS, UVSQ, Université Paris-Saclay, 78035 Versailles, France
| | - Darya V Evtushok
- Nikolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk 630090, Russia
| | - Tatiana N Pozmogova
- Nikolaev Institute of Inorganic Chemistry SB RAS, Novosibirsk 630090, Russia
| | - Tatiana S Golubeva
- Novosibirsk State University, Novosibirsk 630090, Russia.,Federal Research Center Institute of Cytology and Genetics SB RAS, Novosibirsk 630090, Russia
| | - Yann Molard
- Université de Rennes, CNRS, ISCR - UMR 6226, ScanMAT - UMS 2001, F-35000 Rennes, France
| | - Stéphane Cordier
- Université de Rennes, CNRS, ISCR - UMR 6226, ScanMAT - UMS 2001, F-35000 Rennes, France
| | - Clément Falaise
- Institut Lavoisier de Versailles, UMR 8180 CNRS, UVSQ, Université Paris-Saclay, 78035 Versailles, France
| | - Emmanuel Cadot
- Institut Lavoisier de Versailles, UMR 8180 CNRS, UVSQ, Université Paris-Saclay, 78035 Versailles, France
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67
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Borkowski AK, Thompson WH. Shining (Infrared) Light on the Hofmeister Series: Driving Forces for Changes in the Water Vibrational Spectra in Alkali-Halide Salt Solutions. J Phys Chem B 2022; 126:6700-6712. [PMID: 36004804 DOI: 10.1021/acs.jpcb.2c03957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The Hofmeister series is frequently used to rank ions based on their behavior from chaotropes ("structure breakers"), which weaken the surrounding hydrogen-bond network, to kosmotropes ("structure makers"), which enhance it. Here, we use fluctuation theory to investigate the energetic and entropic driving forces underlying the Hofmeister series for aqueous alkali-halide solutions. Specifically, we exploit the OH stretch infrared (IR) spectrum in isotopically dilute HOD/D2O solutions as a probe of the effect of the salt on the water properties for different concentrations and choice of halide anion. Fluctuation theory is used to calculate the temperature derivative of these IR spectra, including decomposition of the derivative into different energetic contributions. These contributions are used to determine the thermodynamic driving forces in terms of effective internal energy and entropic contributions. This analysis implicates entropic contributions as the key factor in the Hofmeister series behavior of the OH stretch IR spectra, while the effective internal energy is nearly ion-independent.
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Affiliation(s)
- Ashley K Borkowski
- Department of Chemistry, University of Kansas, Lawrence, Kansas 66045, United States
| | - Ward H Thompson
- Department of Chemistry, University of Kansas, Lawrence, Kansas 66045, United States
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68
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Holohan C, Feely N, Li P, Curran G, Lee GU. Role of detergents and nuclease inhibitors in the extraction of RNA from eukaryotic cells in complex matrices. NANOSCALE 2022; 14:12153-12161. [PMID: 35968721 DOI: 10.1039/d2nr02850f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The potential for liquid biopsy samples to be used in place of more invasive tissue biopsies has become increasingly revalent as it has been found that nucleic acids (NAs) present in the blood of cancer patients originate from tumors. Nanomagnetic extraction has proven to be a highly effective means to rapidly prepare NA from clinical samples for molecular diagnostics. In this article, the lysis reaction used to extract RNA from the human epithelial melanoma cells have been optimized using silica coated superparamagnetic nanoparticles (SPM NP). The lysis buffer (LB) is composed of several agents that denature cells, i.e., surfactant and guanidinium isothiocyanate (GITC), and agents that inhibit the degradation of circulated nucleic acids (cfNAs). The surfactant Triton X-100 has been widely used in LB but has been placed on the European Union REACH list. We have compared the qRT-PCR sensitivity resulting from LBs composed of Triton X-100 to several sustainable surfactants, i.e., Tergitol 15-S-7, Tergitol 15-S-9 and Tween-20. Surprisingly, the inclusion of these surfactants in the LB was not found to significantly improve cell lysis, and subsequently the sensitivity of qRT-PCR. The role of the sample matrix was also examined by performing extractions from solutions containing up to 30 mg mL-1 serum albumin. The qRT-PCR sensitivity was found to decrease as the concentration of this protein was increased; however, this was linked to an increased RNase activity and not the concentration of the protein itself. These results lead us to recommend a reformulation of LB for clinical samples, and to conclude that sensitive qRT-PCR RNA analysis can be performed in serum with the timely addition of an RNase inhibitor.
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Affiliation(s)
- Cian Holohan
- Conway Institute for Biomedical Research and School of Chemistry, University College Dublin, Ireland.
| | - Nathan Feely
- Conway Institute for Biomedical Research and School of Chemistry, University College Dublin, Ireland.
| | - Peng Li
- Magnostics Ltd, 2 Clifton Lane, Monkstown, Co Dublin, Ireland
| | - Gerard Curran
- Magnostics Ltd, 2 Clifton Lane, Monkstown, Co Dublin, Ireland
| | - Gil U Lee
- Conway Institute for Biomedical Research and School of Chemistry, University College Dublin, Ireland.
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69
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Abstract
The quantification of anion binding by molecular receptors within lipid bilayers remains challenging. Here we measure anion binding in lipid bilayers by creating a fluorescent macrocycle featuring a strong sulfate affinity. We find the determinants of anion binding in lipid bilayers to be different from those expected that govern anion binding in solution. Charge-dense anions H2PO4- and Cl- that prevail in dimethyl sulfoxide fail to bind to the macrocycle in lipids. In stark contrast, ClO4- and I- that hardly bind in dimethyl sulfoxide show surprisingly significant affinities for the macrocycle in lipids. We reveal a lipid bilayer anion binding principle that depends on anion polarisability and bilayer penetration depth of complexes leading to unexpected advantages of charge-diffuse anions. These insights enhance our understanding of how biological systems select anions and guide the design of functional molecular systems operating at biomembrane interfaces.
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70
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Water-Soluble Chalcogenide W 6-Clusters: On the Way to Biomedical Applications. Int J Mol Sci 2022; 23:ijms23158734. [PMID: 35955875 PMCID: PMC9369320 DOI: 10.3390/ijms23158734] [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: 07/19/2022] [Revised: 08/04/2022] [Accepted: 08/04/2022] [Indexed: 11/17/2022] Open
Abstract
Despite the great potential of octahedral tungsten cluster complexes in fields of biomedical applications such as X-ray computed tomography or angiography, there is only one example of a water-soluble W6Q8-cluster that has been reported in the literature. Herein we present the synthesis and a detailed characterization including X-ray structural analysis, NMR, IR, UV-Vis spectroscopies, HR-MS spectrometry, and the electrochemical behavior of two new cluster complexes of the general formula W6Q8L6 with phosphine ligands containing a hydrophilic carboxylic group, which makes the complexes soluble in an aqueous medium. The hydrolytic stability of the clusters' aqueous solutions allows us to investigate for the first time the influence of W6-clusters on cell viability. The results obtained clearly demonstrate their very low cytotoxicity, comparable to the least-toxic clusters presented in the literature.
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71
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Hu JH, Cen R, Liu M, Shan PH, Prior TJ, Redshaw C, Huang Y, Tao Z, Xiao X. Cucurbit[6]uril-based supramolecular frameworks formed through outer surface interactions and application for iodine adsorption. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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72
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Schmid P, Hohenschutz M, Graß X, Witzmann M, Touraud D, Diat O, Pfitzner A, Bauduin P. Counterion effect on α-Keggin polyoxometalates in water: The peculiar role of H+ on their salting-in effect and co-assembly with organics. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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73
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Grimm LM, Spicher S, Tkachenko B, Schreiner PR, Grimme S, Biedermann F. The Role of Packing, Dispersion, Electrostatics, and Solvation in High-Affinity Complexes of Cucurbit[n]urils with Uncharged Polar Guests. Chemistry 2022; 28:e202200529. [PMID: 35612260 PMCID: PMC9401061 DOI: 10.1002/chem.202200529] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Indexed: 12/21/2022]
Abstract
The rationalization of non‐covalent binding trends is both of fundamental interest and provides new design concepts for biomimetic molecular systems. Cucurbit[n]urils (CBn) are known for a long time as the strongest synthetic binders for a wide range of (bio)organic compounds in water. However, their host‐guest binding mechanism remains ambiguous despite their symmetric and simple macrocyclic structure and the wealth of literature reports. We herein report experimental thermodynamic binding parameters (ΔG, ΔH, TΔS) for CB7 and CB8 with a set of hydroxylated adamantanes, di‐, and triamantanes as uncharged, rigid, and spherical/ellipsoidal guests. Binding geometries and binding energy decomposition were obtained from high‐level theory computations. This study reveals that neither London dispersion interactions, nor electronic energies or entropic factors are decisive, selectivity‐controlling factors for CBn complexes. In contrast, peculiar host‐related solvation effects were identified as the major factor for rationalizing the unique behavior and record‐affinity characteristics of cucurbit[n]urils.
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Affiliation(s)
- Laura M Grimm
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Sebastian Spicher
- Mulliken Center for Theoretical Chemistry, Institute of Physical and Theoretical Chemistry, University of Bonn, Beringstraße 4, 53115, Bonn, Germany
| | - Boryslav Tkachenko
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392, Giessen, Germany
| | - Peter R Schreiner
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392, Giessen, Germany
| | - Stefan Grimme
- Mulliken Center for Theoretical Chemistry, Institute of Physical and Theoretical Chemistry, University of Bonn, Beringstraße 4, 53115, Bonn, Germany
| | - Frank Biedermann
- Institute of Nanotechnology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
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74
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Zhao K, Fan G, Liu J, Liu F, Li J, Zhou X, Ni Y, Yu M, Zhang YM, Su H, Liu Q, Cheng F. Boosting the Kinetics and Stability of Zn Anodes in Aqueous Electrolytes with Supramolecular Cyclodextrin Additives. J Am Chem Soc 2022; 144:11129-11137. [PMID: 35700394 DOI: 10.1021/jacs.2c00551] [Citation(s) in RCA: 89] [Impact Index Per Article: 44.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The hydrophobic internal cavity and hydrophilic external surface of cyclodextrins (CDs) render promising electrochemical applications. Here, we report a comparative and mechanistic study on the use of CD molecules (α-, β-, and γ-CD) as electrolyte additives for rechargeable Zn batteries. The addition of α-CD in aqueous ZnSO4 solution reduces nucleation overpotential and activation energy of Zn plating and suppresses H2 generation. Computational, spectroscopic, and electrochemical studies reveal that α-CD preferentially adsorbs in parallel on the Zn surface via secondary hydroxyl groups, suppressing water-induced side reactions of hydrogen evolution and hydroxide sulfate formation. Additionally, the hydrophilic exterior surface of α-CD with intense electron density simultaneously facilitates Zn2+ deposition and alleviates Zn dendrite formation. A formulated 3 M ZnSO4 + 10 mM α-CD electrolyte enables homogenous Zn plating/stripping (average Coulombic efficiency ∼ 99.90%) at 1 mA cm-2 in Zn|Cu cells and a considerable capacity retention of 84.20% after 800 cycles in Zn|V2O5 full batteries. This study provides insight into the use of supramolecular macrocycles to modulate and enhance the interface stability and kinetics of metallic anodes for aqueous battery chemistry.
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Affiliation(s)
- Kang Zhao
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Engineering Research Center of High-efficiency Energy Storage (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Guilan Fan
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Engineering Research Center of High-efficiency Energy Storage (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Jiuding Liu
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Engineering Research Center of High-efficiency Energy Storage (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Fangming Liu
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Engineering Research Center of High-efficiency Energy Storage (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Jinhan Li
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Engineering Research Center of High-efficiency Energy Storage (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Xunzhu Zhou
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Engineering Research Center of High-efficiency Energy Storage (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Youxuan Ni
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Engineering Research Center of High-efficiency Energy Storage (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, P. R. China.,Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, P. R. China
| | - Meng Yu
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Engineering Research Center of High-efficiency Energy Storage (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, P. R. China.,Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, P. R. China
| | - Ying-Ming Zhang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Hui Su
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, P. R. China
| | - Qinghua Liu
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, P. R. China
| | - Fangyi Cheng
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Engineering Research Center of High-efficiency Energy Storage (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, P. R. China.,Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, P. R. China
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75
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Hu X, Guo D. Superchaotropic Boron Clusters as Membrane Carriers for the Transport of Hydrophilic Cargos. Angew Chem Int Ed Engl 2022; 61:e202204979. [DOI: 10.1002/anie.202204979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Indexed: 11/08/2022]
Affiliation(s)
- Xin‐Yue Hu
- College of Chemistry Key Laboratory of Functional Polymer Materials (Ministry of Education) State Key Laboratory of Elemento-Organic Chemistry Nankai University Tianjin 300071 China
| | - Dong‐Sheng Guo
- College of Chemistry Key Laboratory of Functional Polymer Materials (Ministry of Education) State Key Laboratory of Elemento-Organic Chemistry Nankai University Tianjin 300071 China
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76
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Bhattacharya S, Barba-Bon A, Zewdie TA, Müller AB, Nisar T, Chmielnicka A, Rutkowska IA, Schürmann CJ, Wagner V, Kuhnert N, Kulesza PJ, Nau WM, Kortz U. Discrete, Cationic Palladium(II)-Oxo Clusters via f-Metal Ion Incorporation and their Macrocyclic Host-Guest Interactions with Sulfonatocalixarenes. Angew Chem Int Ed Engl 2022; 61:e202203114. [PMID: 35384204 PMCID: PMC9324968 DOI: 10.1002/anie.202203114] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Indexed: 12/28/2022]
Abstract
We report on the discovery of the first two examples of cationic palladium(II)‐oxo clusters (POCs) containing f‐metal ions, [PdII6O12M8{(CH3)2AsO2}16(H2O)8]4+ (M=CeIV, ThIV), and their physicochemical characterization in the solid state, in solution and in the gas phase. The molecular structure of the two novel POCs comprises an octahedral {Pd6O12}12− core that is capped by eight MIV ions, resulting in a cationic, cubic assembly {Pd6O12MIV8}20+, which is coordinated by a total of 16 terminal dimethylarsinate and eight water ligands, resulting in the mixed PdII‐CeIV/ThIV oxo‐clusters [PdII6O12M8{(CH3)2AsO2}16(H2O)8]4+ (M=Ce, Pd6Ce8; Th, Pd6Th8). We have also studied the formation of host‐guest inclusion complexes of Pd6Ce8 and Pd6Th8 with anionic 4‐sulfocalix[n]arenes (n=4, 6, 8), resulting in the first examples of discrete, enthalpically‐driven supramolecular assemblies between large metal‐oxo clusters and calixarene‐based macrocycles. The POCs were also found to be useful as pre‐catalysts for electrocatalytic CO2‐reduction and HCOOH‐oxidation.
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Affiliation(s)
- Saurav Bhattacharya
- Department of Life Sciences and Chemistry, Jacobs University, Campus Ring 1, 28759, Bremen, Germany
| | - Andrea Barba-Bon
- Department of Life Sciences and Chemistry, Jacobs University, Campus Ring 1, 28759, Bremen, Germany
| | - Tsedenia A Zewdie
- Department of Life Sciences and Chemistry, Jacobs University, Campus Ring 1, 28759, Bremen, Germany
| | - Anja B Müller
- Department of Life Sciences and Chemistry, Jacobs University, Campus Ring 1, 28759, Bremen, Germany
| | - Talha Nisar
- Department of Physics and Earth Sciences, Jacobs University, Campus Ring 1, 28759, Bremen, Germany
| | - Anna Chmielnicka
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093, Warsaw, Poland
| | - Iwona A Rutkowska
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093, Warsaw, Poland
| | | | - Veit Wagner
- Department of Physics and Earth Sciences, Jacobs University, Campus Ring 1, 28759, Bremen, Germany
| | - Nikolai Kuhnert
- Department of Life Sciences and Chemistry, Jacobs University, Campus Ring 1, 28759, Bremen, Germany
| | - Pawel J Kulesza
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093, Warsaw, Poland
| | - Werner M Nau
- Department of Life Sciences and Chemistry, Jacobs University, Campus Ring 1, 28759, Bremen, Germany
| | - Ulrich Kortz
- Department of Life Sciences and Chemistry, Jacobs University, Campus Ring 1, 28759, Bremen, Germany
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77
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Mahfouz N, Ghaida FA, El Hajj Z, Diab M, Floquet S, Mehdi A, Naoufal D. Recent Achievements on Functionalization within closo‐Decahydrodecaborate [B
10
H
10
]
2−
Clusters. ChemistrySelect 2022. [DOI: 10.1002/slct.202200770] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Nadine Mahfouz
- Laboratoire de Chimie de Coordination Inorganique et Organométallique LCIO Université Libanaise Faculté des Sciences Hadat, Liban
- Ecole Doctorale en Sciences et Technologies PRASE Université Libanaise Hadat, Liban
- Institut Charles Gerhardt ICGM Université de Montpellier CNRS, ENSCM Montpellier France
| | - Fatima Abi Ghaida
- Laboratoire de Chimie de Coordination Inorganique et Organométallique LCIO Université Libanaise Faculté des Sciences Hadat, Liban
- Ecole Doctorale en Sciences et Technologies PRASE Université Libanaise Hadat, Liban
| | - Zeinab El Hajj
- Laboratoire de Chimie de Coordination Inorganique et Organométallique LCIO Université Libanaise Faculté des Sciences Hadat, Liban
- Ecole Doctorale en Sciences et Technologies PRASE Université Libanaise Hadat, Liban
- Institut Lavoisier de Versailles CNRS UVSQ Université Paris-Saclay 45 av. des Etats-Unis 78035 Versailles France
| | - Manal Diab
- Laboratoire de Chimie de Coordination Inorganique et Organométallique LCIO Université Libanaise Faculté des Sciences Hadat, Liban
| | - Sebastien Floquet
- Institut Lavoisier de Versailles CNRS UVSQ Université Paris-Saclay 45 av. des Etats-Unis 78035 Versailles France
| | - Ahmad Mehdi
- Institut Charles Gerhardt ICGM Université de Montpellier CNRS, ENSCM Montpellier France
| | - Daoud Naoufal
- Laboratoire de Chimie de Coordination Inorganique et Organométallique LCIO Université Libanaise Faculté des Sciences Hadat, Liban
- Ecole Doctorale en Sciences et Technologies PRASE Université Libanaise Hadat, Liban
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78
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Hu X, Guo D. Superchaotropic Boron Clusters as Membrane Carriers for the Transport of Hydrophilic Cargos. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202204979] [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)
- Xin‐Yue Hu
- College of Chemistry Key Laboratory of Functional Polymer Materials (Ministry of Education) State Key Laboratory of Elemento-Organic Chemistry Nankai University Tianjin 300071 China
| | - Dong‐Sheng Guo
- College of Chemistry Key Laboratory of Functional Polymer Materials (Ministry of Education) State Key Laboratory of Elemento-Organic Chemistry Nankai University Tianjin 300071 China
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79
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Casimiro A, Lugger J, Lub J, Nijmeijer K. Non-globular organic ionic plastic crystal containing crown-ether moiety - Tuning its behaviour using sodium salts. Chemphyschem 2022; 23:e202200258. [PMID: 35561265 PMCID: PMC9400962 DOI: 10.1002/cphc.202200258] [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: 04/14/2022] [Indexed: 11/24/2022]
Abstract
Organic ionic plastic crystals (OIPCs) are a class of soft materials showing positional order while still allowing orientational freedom. Due to their motional freedom in the solid state, they possess plasticity, non‐flammability and high ionic conductivity. OIPC behavior is typically exhibited by ‘simple’ globular molecules allowing molecular rotation, whereas the interactions that govern the formation of OIPC phases in complex non‐globular molecules are less understood. To better understand these interactions, a new family of non‐globular OIPCs containing a 15‐crown‐5 ether moiety was synthetized and characterized. The 15C5BA molecule prepared does not exhibit the sought‐after behavior because of its non‐globular nature and strong intermolecular H‐bonds that restrict orientational motion. However, the OIPC behavior was successfully obtained through complexation of the crown‐ether moiety with sodium salts containing chaotropic anions. Those anions weaken the interactions between the molecules, allowing rotational freedom and tuning of the thermal and morphological properties of the OIPC.
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Affiliation(s)
- Anna Casimiro
- Eindhoven University of Technology: Technische Universiteit Eindhoven, Chemical Engineering and Chemistry, Het Kranenveld 14, 5612 AZ, Eindhoven, NETHERLANDS
| | - Jody Lugger
- Eindhoven University of Technology: Technische Universiteit Eindhoven, Chemical Engineering and Chemistry, NETHERLANDS
| | - Johan Lub
- Eindhoven University of Technology: Technische Universiteit Eindhoven, Chemical Engineering and Chemistry, NETHERLANDS
| | - Kitty Nijmeijer
- Technische Universiteit Eindhoven, Membrane Materials and Processes, De Zaale, NETHERLANDS
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80
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Rahman T, Petrus E, Segado M, Martin NP, Palys LN, Rambaran MA, Ohlin CA, Bo C, Nyman M. Predicting the Solubility of Inorganic Ion Pairs in Water. Angew Chem Int Ed Engl 2022; 61:e202117839. [DOI: 10.1002/anie.202117839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Indexed: 11/09/2022]
Affiliation(s)
- Tasnim Rahman
- Department of Chemistry Oregon State University Corvallis OR 97331 USA
| | - Enric Petrus
- Institute of Chemical Research of Catalonia (ICIQ) Barcelona Institute of Science & Technology (BIST) Av. Països Catalans 16 43007 Tarragona Spain
| | - Mireia Segado
- Institute of Chemical Research of Catalonia (ICIQ) Barcelona Institute of Science & Technology (BIST) Av. Països Catalans 16 43007 Tarragona Spain
| | - Nicolas P. Martin
- Department of Chemistry Oregon State University Corvallis OR 97331 USA
| | - Lauren N. Palys
- Department of Chemistry Oregon State University Corvallis OR 97331 USA
| | - Mark A. Rambaran
- Department of Chemistry Faculty of Science and Technology Umeå University 901 87 Umeå Sweden
| | - C. Andre Ohlin
- Department of Chemistry Faculty of Science and Technology Umeå University 901 87 Umeå Sweden
| | - Carles Bo
- Institute of Chemical Research of Catalonia (ICIQ) Barcelona Institute of Science & Technology (BIST) Av. Països Catalans 16 43007 Tarragona Spain
- Departament de Química Física i Inorgànica Universitat Rovira i Virgili (URV) Marcel lí Domingo s/n 43007 Tarragona Spain
| | - May Nyman
- Department of Chemistry Oregon State University Corvallis OR 97331 USA
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81
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Bhattacharya S, Barba‐Bon A, Zewdie TA, Müller AB, Nisar T, Chmielnicka A, Rutkowska IA, Schürmann CJ, Wagner V, Kuhnert N, Kulesza PJ, Nau WM, Kortz U. Discrete, Cationic Palladium(II)‐Oxo Clusters via f‐Metal Ion Incorporation and their Macrocyclic Host‐Guest Interactions with Sulfonatocalixarenes. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202203114] [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)
- Saurav Bhattacharya
- Department of Life Sciences and Chemistry Jacobs University Campus Ring 1 28759 Bremen Germany
| | - Andrea Barba‐Bon
- Department of Life Sciences and Chemistry Jacobs University Campus Ring 1 28759 Bremen Germany
| | - Tsedenia A. Zewdie
- Department of Life Sciences and Chemistry Jacobs University Campus Ring 1 28759 Bremen Germany
| | - Anja B. Müller
- Department of Life Sciences and Chemistry Jacobs University Campus Ring 1 28759 Bremen Germany
| | - Talha Nisar
- Department of Physics and Earth Sciences Jacobs University Campus Ring 1 28759 Bremen Germany
| | - Anna Chmielnicka
- Faculty of Chemistry University of Warsaw Pasteura 1 02-093 Warsaw Poland
| | - Iwona A. Rutkowska
- Faculty of Chemistry University of Warsaw Pasteura 1 02-093 Warsaw Poland
| | | | - Veit Wagner
- Department of Physics and Earth Sciences Jacobs University Campus Ring 1 28759 Bremen Germany
| | - Nikolai Kuhnert
- Department of Life Sciences and Chemistry Jacobs University Campus Ring 1 28759 Bremen Germany
| | - Pawel J. Kulesza
- Faculty of Chemistry University of Warsaw Pasteura 1 02-093 Warsaw Poland
| | - Werner M. Nau
- Department of Life Sciences and Chemistry Jacobs University Campus Ring 1 28759 Bremen Germany
| | - Ulrich Kortz
- Department of Life Sciences and Chemistry Jacobs University Campus Ring 1 28759 Bremen Germany
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82
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Gil A, Carbó JJ. Computational Modelling of the Interactions Between Polyoxometalates and Biological Systems. Front Chem 2022; 10:876630. [PMID: 35494630 PMCID: PMC9046717 DOI: 10.3389/fchem.2022.876630] [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: 02/15/2022] [Accepted: 03/21/2022] [Indexed: 11/27/2022] Open
Abstract
Polyoxometalates (POMs) structures have raised considerable interest for the last years in their application to biological processes and medicine. Within this area, our mini-review shows that computational modelling is an emerging tool, which can play an important role in understanding the interaction of POMs with biological systems and the mechanisms responsible of their activity, otherwise difficult to achieve experimentally. During recent years, computational studies have mainly focused on the analysis of POM binding to proteins and other systems such as lipid bilayers and nucleic acids, and on the characterization of reaction mechanisms of POMs acting as artificial metalloproteases and phosphoesterases. From early docking studies locating binding sites, molecular dynamics (MD) simulations have allowed to characterize the nature of POM···protein interactions, and to evaluate the effect of the charge, size, and shape of the POM on protein affinity, including also, the atomistic description of chaotropic character of POM anions. Although these studies rely on the interaction with proteins and nucleic acid models, the results could be extrapolated to other biomolecules such as carbohydrates, triglycerides, steroids, terpenes, etc. Combining MD simulations with quantum mechanics/molecular mechanics (QM/MM) methods and DFT calculations on cluster models, computational studies are starting to shed light on the factors governing the activity and selectivity for the hydrolysis of peptide and phosphoester bonds catalysed by POMs.
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Affiliation(s)
- Adrià Gil
- ARAID Foundation, Zaragoza, Spain
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH) CSIC, Universidad de Zaragoza, Zaragoza, Spain
- Faculdade de Ciências, BioISI—Biosystems and Integrative Sciences Institute, Universidade de Lisboa, Lisboa, Portugal
- *Correspondence: Adrià Gil, ; Jorge J. Carbó,
| | - Jorge J. Carbó
- Department de Química Física i Inorgànica, Universitat Rovira i Virgili, Tarragona, Spain
- *Correspondence: Adrià Gil, ; Jorge J. Carbó,
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83
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Kubik S. When Molecules Meet in Water-Recent Contributions of Supramolecular Chemistry to the Understanding of Molecular Recognition Processes in Water. Chemistry 2022; 11:e202200028. [PMID: 35373466 PMCID: PMC8977507 DOI: 10.1002/open.202200028] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 03/17/2022] [Indexed: 12/19/2022]
Abstract
Molecular recognition processes in water differ from those in organic solvents in that they are mediated to a much greater extent by solvent effects. The hydrophobic effect, for example, causes molecules that only weakly interact in organic solvents to stay together in water. Such water‐mediated interactions can be very efficient as demonstrated by many of the synthetic receptors discussed in this review, some of which have substrate affinities matching or even surpassing those of natural binders. However, in spite of considerable success in designing such receptors, not all factors determining their binding properties in water are fully understood. Existing concepts still provide plausible explanations why the reorganization of water molecules often causes receptor‐substrate interactions in water to be strongly exothermic rather than entropically favored as predicted by the classical view of the hydrophobic effect.
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Affiliation(s)
- Stefan Kubik
- Technische Universität Kaiserslautern, Fachbereich Chemie - Organische Chemie, Erwin-Schrödinger-Straße 54, 67663, Kaiserslautern, Germany
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84
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He X, Ewing AG. Simultaneous Counting of Molecules in the Halo and Dense-Core of Nanovesicles by Regulating Dynamics of Vesicle Opening. Angew Chem Int Ed Engl 2022; 61:e202116217. [PMID: 35129861 PMCID: PMC9306628 DOI: 10.1002/anie.202116217] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Indexed: 01/09/2023]
Abstract
We report the discovery that in the presence of chaotropic anions (SCN−) the opening of nanometer biological vesicles at an electrified interface often becomes a two‐step process (around 30 % doublet peaks). We have then used this to independently count molecules in each subvesicular compartment, the halo and protein dense‐core, and the fraction of catecholamine binding to the dense‐core is 68 %. Moreover, we differentiated two distinct populations of large dense‐core vesicles (LDCVs) and quantified their content, which might correspond to immature (43 %) and mature (30 %) LDCVs, to reveal differences in their biogenesis. We speculate this is caused by an increase in the electrostatic attraction between protonated catecholamine and the negatively charged dense‐core following adsorption of SCN−.
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Affiliation(s)
- Xiulan He
- Department of Chemistry and Molecular Biology, University of Gothenburg, Kemivägen 10, 41296, Gothenburg, Sweden
| | - Andrew G Ewing
- Department of Chemistry and Molecular Biology, University of Gothenburg, Kemivägen 10, 41296, Gothenburg, Sweden
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85
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Horáček O, Marvalová J, Štilcová K, Holub J, Grüner B, Kučera R. Reversed-phase chromatography as an effective tool for the chiral separation of anionic and zwitterionic carboranes using polysaccharide-based chiral selectors. J Chromatogr A 2022; 1672:463051. [DOI: 10.1016/j.chroma.2022.463051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 04/08/2022] [Accepted: 04/09/2022] [Indexed: 12/01/2022]
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86
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Li WZ, Chen H, Shen MN, Yang Z, Fan Z, Xiao J, Chen J, Zhang H, Wang Z, Wang XQ. Chaotropic Effect Stabilized Radical-Containing Supramolecular Organic Frameworks for Photothermal Therapy. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2108055. [PMID: 35253981 DOI: 10.1002/smll.202108055] [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: 01/10/2022] [Revised: 02/07/2022] [Indexed: 06/14/2023]
Abstract
Radical-containing frameworks (RCFs) have emerged as promising functional materials in various fields due to the combination of the highly ordered frame structure and the fascinating property of organic radicals. Here, the first example of radical-containing supramolecular organic frameworks (SOFs) fabricated by the chaotropic effect between closo-dodecaborate cluster (B12 H122- ) and 2,4,6-tri(4-pyridyl)-1,3,5-triazine (TPT3+ ) is presented. The SOFs can be easily synthesized by stirring the B12 H122- and the TPT3+ in aqueous solution through self-assembly. Upon 435 nm light irradiation, the SOFs exhibits photochromic behavior from slight yellow (SOF-1) to dark purple (SOF-2). Electron paramagnetic resonance spectroscopy also reveals that stable radicals are generated in situ after light irradiation. Powder X-ray diffraction demonstrates the SOFs maintain their structural stabilities upon light irradiation. More interestingly, the radical-containing SOFs exhibit efficient photothermal effect under 660 nm light irradiation, which can be applied as photothermal agent for antibacterial application both in vitro and in vivo. This work highlights the construction of RCFs through supramolecular self-assembly, which may arouse applications in energy, catalysis, photoluminescence, and biomedical fields.
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Affiliation(s)
- Wen-Zhen Li
- The State Key Laboratory of Refractories and Metallurgy, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan, 430081, P. R. China
| | - Hao Chen
- National Demonstration Center for Experimental Chemistry, Engineering Research Center of Organosilicon Compounds Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, P. R. China
| | - Meng-Na Shen
- The State Key Laboratory of Refractories and Metallurgy, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan, 430081, P. R. China
| | - Ziqiong Yang
- National Demonstration Center for Experimental Chemistry, Engineering Research Center of Organosilicon Compounds Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, P. R. China
| | - Zhengyu Fan
- National Demonstration Center for Experimental Chemistry, Engineering Research Center of Organosilicon Compounds Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, P. R. China
| | - Ju Xiao
- The State Key Laboratory of Refractories and Metallurgy, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan, 430081, P. R. China
| | - Junling Chen
- The State Key Laboratory of Refractories and Metallurgy, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan, 430081, P. R. China
| | - Haibo Zhang
- National Demonstration Center for Experimental Chemistry, Engineering Research Center of Organosilicon Compounds Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, P. R. China
| | - Zhengxi Wang
- Non-power Nuclear Technology Collaborative Innovation Center, Hubei Key Laboratory of Radiation Chemistry and Functional Materials, Hubei University of Science and Technology, Xianning, Hubei, 437100, P. R. China
| | - Xiao-Qiang Wang
- The State Key Laboratory of Refractories and Metallurgy, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan, 430081, P. R. China
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87
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Zhang ZH, Chen LX, Zhang YQ, Zhu QJ, Chen K, Tao Z. CdS-Based Catalysts Derived from TMeQ[6]/[Cd xCl y] n--Based Frameworks for Oxidation Benzylamine. Inorg Chem 2022; 61:5607-5615. [PMID: 35357176 DOI: 10.1021/acs.inorgchem.2c00096] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The anion-induced outer surface interaction of Q[n]s is an important driving force in the construction of Q[n]-based supramolecular frameworks. In this work, a symmetric tetramethyl-substituted cucurbit[6]uril (TMeQ[6]) is selected as the basic structural block. Using the anion-induced outer surface interaction of Q[n]s derived from [CdxCly]n- anions formed by Cd2+ cations in a HCl medium, four different TMeQ[6]-[CdxCly]n--based supramolecular frameworks are constructed. Three of the most common TMeQ[6]-[CdxCly]n--based supramolecular frameworks are selected for further vulcanization, and three different CdS/TMeQ[6]-based framework catalysts with different structures and properties are obtained. The catalytic activities of these three CdS/TMeQ[6]-based framework catalysts are investigated by the coupling photocatalytic reaction of aminobenzyl, and the results showed that the catalytic activities of the three catalysts are all higher than that of pure CdS. Therefore, this work establishes that it is possible to establish a method for synthesizing the Q[n]-based framework-supported catalysts by first synthesizing TMeQ[6]-[CdxCly]n--based supramolecular frameworks and then forming Q[n]-based framework supported catalysts by sulfurization or reduction.
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Affiliation(s)
- Zhi Hua Zhang
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, People's Republic of China
| | - Li Xia Chen
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, People's Republic of China
| | - Yun Qian Zhang
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, People's Republic of China
| | - Qian Jiang Zhu
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, People's Republic of China
| | - Kai Chen
- Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China
| | - Zhu Tao
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, People's Republic of China
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88
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Abstract
The membrane translocation of hydrophilic substances constitutes a challenge for their application as therapeutic compounds and labelling probes1–4. To remedy this, charged amphiphilic molecules have been classically used as carriers3,5. However, such amphiphilic carriers may cause aggregation and non-specific membrane lysis6,7. Here we show that globular dodecaborate clusters, and prominently B12Br122−, can function as anionic inorganic membrane carriers for a broad range of hydrophilic cargo molecules (with molecular mass of 146–4,500 Da). We show that cationic and neutral peptides, amino acids, neurotransmitters, vitamins, antibiotics and drugs can be carried across liposomal membranes. Mechanistic transport studies reveal that the carrier activity is related to the superchaotropic nature of these cluster anions8–12. We demonstrate that B12Br122− affects cytosolic uptake of different small bioactive molecules, including the antineoplastic monomethyl auristatin F, the proteolysis targeting chimera dBET1 and the phalloidin toxin, which has been successfully delivered in living cells for cytoskeleton labelling. We anticipate the broad and distinct delivery spectrum of our superchaotropic carriers to be the starting point of conceptually distinct cell-biological, neurobiological, physiological and pharmaceutical studies. The superchaotropic nature of globular boron cluster anions enables direct passage of a wide range of molecules across lipid membranes.
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89
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Polymeric Surfactant P84/Polyoxometalate α-PW12O403−—A Model System to Investigate the Interplay between Chaotropic and Hydrophobic Effects. COLLOIDS AND INTERFACES 2022. [DOI: 10.3390/colloids6010016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Low charge density nanometric ions were recently shown to bind strongly to neutral hydrated matter in aqueous solution. This phenomenon, called the (super-)chaotropic effect, arises from the partial dehydration of both the nano-ion and the solute, leading to a significant gain in enthalpy. Here, we investigate the chaotropic effect of the polyoxometalate α-PW12O403− on the triblock copolymer P84: (EO)19(PO)43(EO)19 with (EO)19 the polyethoxylated and (PO)43 the polypropoxylated chains. The combination of phase diagrams, spectroscopic (nuclear magnetic resonance) and scattering (small angle neutron/X-ray scattering) techniques revealed that: (i) below the micellization temperature of P84, PW12O403− exclusively binds to the propylene oxide moiety of P84 unimers; and (ii) above the micellization temperature, PW12O403− mostly adsorbs on the ethylene oxide micellar corona. The preferential binding of the PW12O403− to the PPO chain over the PEO chains suggests that the binding is driven by the chaotropic effect and is reinforced by the hydrophobic effect. At higher temperatures, copolymer micellization leads to the displacement of PW12O403− from the PPO chain to the PEO chains. This study deepens our understanding of the subtle interplay between the chaotropic and hydrophobic effects in complex salt-organic matter solutions.
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90
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Khlifi S, Marrot J, Haouas M, Shepard WE, Falaise C, Cadot E. Chaotropic Effect as an Assembly Motif to Construct Supramolecular Cyclodextrin-Polyoxometalate-Based Frameworks. J Am Chem Soc 2022; 144:4469-4477. [PMID: 35230838 DOI: 10.1021/jacs.1c12049] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In aqueous solution, low-charged polyoxometalates (POMs) exhibit remarkable self-assembly properties with nonionic organic matter that have been recently used to develop groundbreaking advances in host-guest chemistry, as well as in soft matter science. Herein, we exploit the affinity between a chaotropic POM and native cyclodextrins (α-, β-, and γ-CD) to enhance the structural and functional diversity of cyclodextrin-based open frameworks. First, we reveal that the Anderson-Evans type polyoxometalate [AlMo6O18(OH)6]3- represents an efficient inorganic scaffold to design open hybrid frameworks built from infinite cyclodextrin channels connected through the disk-shaped POM. A single-crystal X-ray analysis demonstrates that the resulting supramolecular architectures contain large cavities (up to 2 nm) where the topologies are dictated by the rotational symmetry of the organic macrocycle, generating honeycomb (bnn net) and checkerboard-like (pcu net) networks for α-CD (C6) and γ-CD (C8), respectively. On the other hand, the use of β-CD, a macrocycle with C7 ideal symmetry, led to a distorted-checkerboard-like network. The cyclodextrin-based frameworks built from an Anderson-Evans type POM are easily functionalizable using the molecular recognition properties of the macrocycle building units. As a proof of concept, we successfully isolated a series of compartmentalized functional frameworks by the entrapment of polyiodides or superchaotropic redox-active polyanions within the macrocyclic host matrix. This set of results paves the way for designing multifunctional supramolecular frameworks whose pore dimensions are controlled by the size of inorganic entities.
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Affiliation(s)
- Soumaya Khlifi
- Université Paris-Saclay, UVSQ, CNRS, UMR8180, Institut Lavoisier de Versailles, 78000 Versailles, France
| | - Jérôme Marrot
- Université Paris-Saclay, UVSQ, CNRS, UMR8180, Institut Lavoisier de Versailles, 78000 Versailles, France
| | - Mohamed Haouas
- Université Paris-Saclay, UVSQ, CNRS, UMR8180, Institut Lavoisier de Versailles, 78000 Versailles, France
| | - William E Shepard
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubain, 91192 Gif-sur-Yvette, France
| | - Clément Falaise
- Université Paris-Saclay, UVSQ, CNRS, UMR8180, Institut Lavoisier de Versailles, 78000 Versailles, France
| | - Emmanuel Cadot
- Université Paris-Saclay, UVSQ, CNRS, UMR8180, Institut Lavoisier de Versailles, 78000 Versailles, France
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91
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He X, Ewing AG. Simultaneous Counting of Molecules in the Halo and Dense‐Core of Nanovesicles by Regulating Dynamics of Vesicle Opening. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202116217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xiulan He
- Department of Chemistry and Molecular Biology University of Gothenburg Kemivägen 10 41296 Gothenburg Sweden
| | - Andrew G. Ewing
- Department of Chemistry and Molecular Biology University of Gothenburg Kemivägen 10 41296 Gothenburg Sweden
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92
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Yao S, Falaise C, Leclerc N, Roch-Marchal C, Haouas M, Cadot E. Improvement of the Hydrolytic Stability of the Keggin Molybdo- and Tungsto-Phosphate Anions by Cyclodextrins. Inorg Chem 2022; 61:4193-4203. [PMID: 35179360 DOI: 10.1021/acs.inorgchem.2c00095] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Keggin-type molybdo- and tungsto-phosphate polyoxoanions are among the most popular polyoxometalates (POMs) but suffer from their limited stability at low pH in aqueous solution. Their superchaotropic properties generate strong supramolecular complexes with cyclodextrins (CDs), which significantly affect the hydrolytic stability of POM. This chaotropically driven stabilization effect was systematically monitored by 31P NMR spectroscopy covering a wide range of pH (from 0 to 8) and varying the nature of the CD (α-, β-, and γ-form). A shift of ca. two pH units of the stability domains of these POMs was found in the presence of two equivalents of γ-CD compared to pure water, leading to keep intact the PW12O403- anion without any decomposition up to pH 3.5 (versus 1.5 in pure water) and pH 2.5 for PMo12O403-, which begins to decompose even at pH 0 in pure water. The effect of the smaller CDs (α- and β-form) is much less pronounced (only 0.5 pH units shift of the stability domain) confirming the importance of host-guest size matching to form a sandwich-type inclusion complex and thus protect the POM structure against basic hydrolysis. Such complexation was further supported by 183W and 1H NMR spectroscopy. Finally, using quantitative 31P NMR analyses, the new speciation and formation constants of phospho-molybdates and phospho-tungstates in the presence of cyclodextrins are determined and compared to those previously reported in pure water or in the 50:50 water/1,4-dioxane mixture.
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Affiliation(s)
- Sa Yao
- Institut Lavoisier de Versailles, UMR 8180 CNRS, UVSQ, Université Paris-Saclay, Versailles 78035, France
| | - Clément Falaise
- Institut Lavoisier de Versailles, UMR 8180 CNRS, UVSQ, Université Paris-Saclay, Versailles 78035, France
| | - Nathalie Leclerc
- Institut Lavoisier de Versailles, UMR 8180 CNRS, UVSQ, Université Paris-Saclay, Versailles 78035, France
| | - Catherine Roch-Marchal
- Institut Lavoisier de Versailles, UMR 8180 CNRS, UVSQ, Université Paris-Saclay, Versailles 78035, France
| | - Mohamed Haouas
- Institut Lavoisier de Versailles, UMR 8180 CNRS, UVSQ, Université Paris-Saclay, Versailles 78035, France
| | - Emmanuel Cadot
- Institut Lavoisier de Versailles, UMR 8180 CNRS, UVSQ, Université Paris-Saclay, Versailles 78035, France
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93
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El Anwar S, Pazderová L, Bavol D, Bakardjiev M, Růžičková Z, Horáček O, Fojt L, Kučera R, Grűner B. Structurally rigidified cobalt bis(dicarbollide) derivatives, a chiral platform for labelling of biomolecules and new materials. Chem Commun (Camb) 2022; 58:2572-2575. [PMID: 35107456 DOI: 10.1039/d1cc06979a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
We report the difunctional modification of an anionic cobalta bis(dicarbollide)(1-) cluster with a B(8,8')-oxygen bridging unit that provides structural rigidity and an organic alkylazide substituent(s) on the carbon atoms of the metallacarborane cage. These ions present a good binding motif for incorporation into organic molecules using Huisgen-Sharpless (2+3) cycloaddition reactions. In addition, the compounds are chiral, as verified by separation of enantiomers using HPLC on chiral stationary phases (CSPs) and provide a high electrochemical peak in the window located outside of typical signals of biomolecules.
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Affiliation(s)
- Suzan El Anwar
- Institute of Inorganic Chemistry, Czech Academy of Sciences, 25068 Řež, Czech Republic.
| | - Lucia Pazderová
- Institute of Inorganic Chemistry, Czech Academy of Sciences, 25068 Řež, Czech Republic.
| | - Dmytro Bavol
- Institute of Inorganic Chemistry, Czech Academy of Sciences, 25068 Řež, Czech Republic.
| | - Mário Bakardjiev
- Institute of Inorganic Chemistry, Czech Academy of Sciences, 25068 Řež, Czech Republic.
| | - Zdeňka Růžičková
- Dpt. of Inorganic and General Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentská 95, 532 10 Pardubice, Czech Republic
| | - Ondřej Horáček
- Faculty of Pharmacy, Charles University, Akademika Heyrovskeho 1203, 500 05 Hradec Kráové, Czech Republic
| | - Lukáš Fojt
- Institute of Biophysics, Czech Academy of Sciences, Královopolská 135, 612 65 Brno, Czech Republic
| | - Radim Kučera
- Faculty of Pharmacy, Charles University, Akademika Heyrovskeho 1203, 500 05 Hradec Kráové, Czech Republic
| | - Bohumír Grűner
- Institute of Inorganic Chemistry, Czech Academy of Sciences, 25068 Řež, Czech Republic.
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94
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Marei T, Al-Joumhawy MK, Alnajjar MA, Nau WM, Assaf KI, Gabel D. Binding affinity of aniline-substituted dodecaborates to cyclodextrins. Chem Commun (Camb) 2022; 58:2363-2366. [PMID: 35080530 DOI: 10.1039/d1cc06524f] [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 new set of hybrid guest molecules bearing organic and inorganic residues have been studied for their recognition by cyclodextrins in aqueous solution. The guest molecules consist of nitroanilines linked through their amino group to the dodecahydrido-closo-dodecaborate cluster B12H122-, which serves as an anchor group. They show sizable affinity to cyclodextrins, and unexpected photophysical properties, with a very strong and low-energy charge-transfer band. The dodecaborate cluster increases the pKa of the anilines by 5.0 to 5.7 pH units, and the deprotonated forms of the o- and p-nitroaniline derivatives show strong charge transfer absorption bands in the visible part of the spectrum.
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Affiliation(s)
- Tarek Marei
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Bremen D-28759, Germany.
| | - Mahmoud K Al-Joumhawy
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Bremen D-28759, Germany.
| | - Mohammad A Alnajjar
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Bremen D-28759, Germany.
| | - Werner M Nau
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Bremen D-28759, Germany.
| | - Khaleel I Assaf
- Department of Chemistry, Faculty of Science, Al-Balqa Applied University, Al-Salt 19117, Jordan
| | - Detlef Gabel
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Bremen D-28759, Germany.
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95
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Hollow SE, Johnstone TC. Encapsulation of closo-dodecaiodododecaborate in 2-hydroxypropyl-γ-cyclodextrin prevents hemolysis. Chem Commun (Camb) 2022; 58:2375-2378. [PMID: 35080538 DOI: 10.1039/d1cc06348k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Na2B12I12 has many of the properties desired by an X-ray contrast agent but is lethal at the concentrations needed for medical imaging. We demonstrate here that PBS solutions with >50 mM Na2B12I12 induce hemolysis, consistent with the previously reported superchaotropic nature of the anion. The presence of <1 equiv. of 2-hydroxypropyl-γ-cyclodextrin prevents hemolysis and suggests a strategy for exploiting B12I122- as an X-ray contrast agent.
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Affiliation(s)
- Sophia E Hollow
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064, USA.
| | - Timothy C Johnstone
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064, USA.
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96
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Rahman T, Petrus E, Segado M, Martin N, Palys L, Rambaran MA, Ohlin CA, Bo C, Nyman M. Predicting solubility of ion pairs in aqueous inorganic chemistry. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202117839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Tasnim Rahman
- Oregon State University Department of Chemistry UNITED STATES
| | - Enric Petrus
- ICIQ: Institut Catala d'Investigacio Quimica Chemistry SPAIN
| | - Mireia Segado
- ICIQ: Institut Catala d'Investigacio Quimica Chemistry SPAIN
| | - Nicolas Martin
- Oregon State University Department of Chemistry chemistry UNITED STATES
| | - Lauren Palys
- Oregon State University Department of Chemistry Chemistry UNITED STATES
| | | | | | - Carles Bo
- ICIQ: Institut Catala d'Investigacio Quimica Chemistry SPAIN
| | - May Nyman
- Oregon State University Department of Chemistry 153 Gilbert Hall 97331-4003 Corvallis UNITED STATES
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97
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Peng ZZ, Xu SY, Li WZ, Li L, Wang XQ, Wang W. Self-assembly of berberine and a boron cluster for antibacterial regulation. NEW J CHEM 2022. [DOI: 10.1039/d2nj00578f] [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
B12H122− and BBR can quickly form rod-shaped particles in aqueous solution with enhanced reactive oxygen species (ROS) generation ability.
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Affiliation(s)
- Zi-Ze Peng
- College of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, P. R. China
| | - Shi-Yuan Xu
- College of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, P. R. China
| | - Wen-Zhen Li
- College of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, P. R. China
| | - Lingling Li
- College of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, P. R. China
| | - Xiao-Qiang Wang
- College of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, P. R. China
| | - Wenjing Wang
- College of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, P. R. China
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98
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Shalima T, Mishra KA, Kaabel S, Ustrnul L, Bartkova S, Tõnsuaadu K, Heinmaa I, Aav R. Cyclohexanohemicucurbit[8]uril Inclusion Complexes With Heterocycles and Selective Extraction of Sulfur Compounds From Water. Front Chem 2021; 9:786746. [PMID: 34926407 PMCID: PMC8678634 DOI: 10.3389/fchem.2021.786746] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 11/04/2021] [Indexed: 11/13/2022] Open
Abstract
Solid-phase extraction that utilizes selective macrocyclic receptors can serve as a useful tool for removal of chemical wastes. Hemicucurbiturils are known to form inclusion complexes with suitably sized anions; however, their use in selective binding of non-charged species is still very limited. In this study, we found that cyclohexanohemicucurbit[8]uril encapsulates five- and six-membered sulfur- and oxygen-containing unsubstituted heterocycles, which is investigated by single-crystal X-ray diffraction, NMR spectroscopy, isothermal titration calorimetry, and thermogravimetry. The macrocycle acts as a promising selective sorption material for the extraction of sulfur heterocycles, such as 1,3-dithiolane and α-lipoic acid, from water.
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Affiliation(s)
- Tatsiana Shalima
- Department of Chemistry and Biotechnology, School of Science, Tallinn University of Technology, Tallinn, Estonia
| | - Kamini A Mishra
- Department of Chemistry and Biotechnology, School of Science, Tallinn University of Technology, Tallinn, Estonia
| | - Sandra Kaabel
- Department of Chemistry, McGill University, Montreal, QC, Canada
| | - Lukas Ustrnul
- Department of Chemistry and Biotechnology, School of Science, Tallinn University of Technology, Tallinn, Estonia
| | - Simona Bartkova
- Department of Chemistry and Biotechnology, School of Science, Tallinn University of Technology, Tallinn, Estonia
| | - Kaia Tõnsuaadu
- Laboratory of Inorganic Materials, School of Engineering, Institute of Materials and Environmental Technology, Tallinn University of Technology, Tallinn, Estonia
| | - Ivo Heinmaa
- Laboratory of Chemical Physics, National Institute of Chemical Physics and Biophysics, Tallinn, Estonia
| | - Riina Aav
- Department of Chemistry and Biotechnology, School of Science, Tallinn University of Technology, Tallinn, Estonia
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99
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Sieling T, Petersen T, Alpers T, Christoffers J, Klüner T, Brand I. CD Stretching Modes are Sensitive to the Microenvironment in Ionic Liquids. Chemistry 2021; 27:17808-17817. [PMID: 34510599 PMCID: PMC9298891 DOI: 10.1002/chem.202102346] [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: 06/30/2021] [Indexed: 11/26/2022]
Abstract
Knowledge of the structure of the electrical double layer in ionic liquids (IL) is crucial for their applications in electrochemical technologies. We report the synthesis and applicability of an imidazolium‐based amphiphilic ionic liquid with a perdeuterated alkyl chain for studies of electric potential‐dependent rearrangements, and changes in the microenvironment in a monolayer on a Au(111) surface. Electrochemical measurements show two states of the organization of ions on the electrode surface. In situ IR spectroscopy shows that the alkyl chains in imidazolium cations change their orientation depending on the adsorption state. The methylene‐d2 stretching modes in the perdeuterated IL display a reversible, potential‐dependent appearance of a new band. The presence of this mode also depends on the anion in the IL. Supported by quantum chemical calculations, this new mode is assigned to a second νas(CD2) band in alkyl‐chain fragments embedded in a polar environment of the anions/solvent present in the vicinity of the imidazolium cation and electrode. It is a measure of the potential‐dependent segregation between polar and nonpolar environments in the layers of an IL closest to the electrode.
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Affiliation(s)
- Thorben Sieling
- Institute of Chemistry, University of Oldenburg, 26111, Oldenburg, Germany
| | - Thorben Petersen
- Institute of Chemistry, University of Oldenburg, 26111, Oldenburg, Germany
| | - Torben Alpers
- Institute of Chemistry, University of Oldenburg, 26111, Oldenburg, Germany
| | - Jens Christoffers
- Institute of Chemistry, University of Oldenburg, 26111, Oldenburg, Germany
| | - Thorsten Klüner
- Institute of Chemistry, University of Oldenburg, 26111, Oldenburg, Germany
| | - Izabella Brand
- Institute of Chemistry, University of Oldenburg, 26111, Oldenburg, Germany
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100
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Alfaifi MY, Shati AA, Elbehairi SEI, Elshaarawy RFM, Gad EM. Fine-tuning of the pharmacological potential of novel thiazolium ionic liquids by anion alteration. RSC Adv 2021; 12:458-469. [PMID: 35424514 PMCID: PMC8978639 DOI: 10.1039/d1ra07128a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Accepted: 11/15/2021] [Indexed: 12/18/2022] Open
Abstract
A novel series of thiazolium ionic liquids (TILs) bound to chloride (2a–c), tetrafluoroborate (BF4) (3a–c), and bis-(trifluoromethanesulfonimide) (Tf2N) anions (4a–c) was synthesized and their physicochemical characteristics were investigated using various microanalytical techniques. The pharmacological potential of the new TILs was assessed as chemotherapeutic agents for bacterial infections and ovarian cancer (SKOV-3). Notably, ILs with the same cations become more bactericidal upon their binding with the strongest chaotropic anion (TN2f). The in vitro toxicity of the TILs toward ovarian carcinoma cell lines (SKOV-3) and normal human skin fibroblast cells (HSF) revealed that all tested TILs have the capacity to induce a dose- and time-dependent decline in SKOV-3 cell viability, with Tf2N-linked TILs (4a–c) having a preferable efficacy. In addition, the new compounds showed excellent selectivity for cancer cells (SKOV-3) over healthy cells (HSF). [iPBzTh][Tf2N] (4b) is the most cytotoxic and specific one and may act as a promising anti-ovarian cancer agent. A novel series of thiazolium ionic liquids (TILs) bound to chloride (2a–c), tetrafluoroborate (BF4) (3a–c), and bis-(trifluoromethanesulfonimide) (Tf2N) anions (4a–c) was synthesized and their physicochemical characteristics were investigated.![]()
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Affiliation(s)
- Mohammad Y Alfaifi
- Biology Department, Faculty of Science, King Khalid University 9004 Abha Saudi Arabia
| | - Ali A Shati
- Biology Department, Faculty of Science, King Khalid University 9004 Abha Saudi Arabia
| | - Serag Eldin I Elbehairi
- Biology Department, Faculty of Science, King Khalid University 9004 Abha Saudi Arabia.,Cell Culture Lab, Egyptian Organization for Biological Products and Vaccines (VACSERA Holding Company) Giza 12311 Egypt
| | - Reda F M Elshaarawy
- Chemistry Department, Faculty of Science, Suez University 43533 Suez Egypt.,Institut für Anorganische Chemie und Strukturchemie, Heinrich-Heine Universität Düsseldorf Düsseldorf Germany
| | - Emad M Gad
- Chemistry Department, Faculty of Science, Suez Canal University Ismalia Egypt
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