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Wang Z, Xia S, Deng X, Baryshnikov G, Kuklin A, Ågren H, Zhang H. Platinum group nanoparticles doped BCN matrix: Efficient catalysts for the electrocatalytic reduction of nitrate to ammonia. J Colloid Interface Sci 2024; 664:84-95. [PMID: 38460387 DOI: 10.1016/j.jcis.2024.02.211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 02/23/2024] [Accepted: 02/29/2024] [Indexed: 03/11/2024]
Abstract
The effective treatment of nitrate (NO3-) in water as a nitrogen source and electrocatalytic NO3- reduction to ammonia (NH3) (NRA) have become preferred methods for NO3--to-NH3 conversion. Achieving efficient NO3--to-NH3 conversion requires the design and development of electrode materials with high activity and efficiency for the electrocatalytic NRA reaction. Herein, based on the special properties of dodecahydro-closo-dodecaborate anions, a BCN matrix, loaded with platinum-group nanoparticles (namely, Pd/BCN, Pt/BCN, and Ru/BCN), was prepared using a simple method for the electrocatalytic NRA reaction. Results showed that Pd/BCN exerts the best catalytic effect on the NRA reaction. The NH3 production rate reached 12.71 mg h-1 mgcat.-1 at -1.0 V vs. RHE. Faraday efficiency reached 91.79 %, which can be attributed to the more uniform distribution of the nanoparticles. Furthermore, Pd/BCN exhibited high cycling stability and resistance to ionic interference. Moreover, the density functional theory calculations indicated that small and well-distributed Pd nanoclusters in the BCN matrix have a large active surface area and promote the catalytic process. This study provides a new strategy to design catalysts for green ammonia synthesis.
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Affiliation(s)
- Zhengxi Wang
- School of Nuclear Technology and Chemistry & Biology, Hubei Key Laboratory of Radiation Chemistry and Functional Materials, Hubei University of Science and Technology, Xianning 437100, PR China
| | - Shiying Xia
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, PR China; Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Wuhan 430072, PR China
| | - Xuefan Deng
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, PR China; Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Wuhan 430072, PR China.
| | - Glib Baryshnikov
- Department of Science and Technology, Linköping University, Norrköping 60174, Sweden.
| | - Artem Kuklin
- Department of Physics and Astronomy, Division of X-ray Photon Science, Uppsala University, Lägerhyddsvägen 1, SE-75121 Uppsala, Sweden
| | - Hans Ågren
- Department of Physics and Astronomy, Division of X-ray Photon Science, Uppsala University, Lägerhyddsvägen 1, SE-75121 Uppsala, Sweden
| | - Haibo Zhang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, PR China; Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Wuhan 430072, PR China.
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2
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Wang ZX, Chen X, Liu X, Li WZ, Ye YY, Xu SY, Zhang H, Wang XQ. Chaotropic Effect-Induced Self-Assembly of the Malachite Green and Boron Cluster for Toxicity Regulation and Photothermal Therapy. ACS APPLIED MATERIALS & INTERFACES 2023; 15:55486-55494. [PMID: 37995715 DOI: 10.1021/acsami.3c13664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2023]
Abstract
Malachite green (MG), a toxic antibacterial agent, is widely used in the farming industry. Effectively regulating the biotoxicity of this highly water-soluble cationic dye is challenging. Here, we present a novel strategy to reduce the biotoxicity of MG through the self-assembly of MG and the closo-dodecaborate cluster ([B12H12]2-) driven by the chaotropic effect. [B12H12]2- and MG in an aqueous solution can rapidly form an insoluble cubic-type supramolecular complex (B12-MG), and the original toxicity of MG is completely suppressed. Surprisingly, this supramolecular complex, B12-MG, has a strong UV-vis absorption peak at 600-800 nm and significant photothermal conversion efficiency under 660 nm laser irradiation. On this basis, B12-MG, the supramolecular complex, can be used as an efficient photothermal agent for antimicrobial photothermal therapy (PTT) both in vitro and in vivo. As a molecular chaperone of MG, [B12H12]2- not only can be applied as an antidote to regulate the biotoxicity of MG but also provides a novel method for the construction of photothermal agents for PTT based on the chaotropic effect.
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Affiliation(s)
- Zi-Xin Wang
- Interdisciplinary Institute of NMR and Molecular Sciences, Key Laboratory of Coal Conversion and New Carbon Materials of Hubei Province, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan, Hubei 430081, P. R. China
| | - Xiaofang Chen
- Department of Infectious Disease, Fujian Medical University Union Hospital, Fuzhou, Fujian 350000, P. R. China
| | - Xinyu Liu
- Interdisciplinary Institute of NMR and Molecular Sciences, Key Laboratory of Coal Conversion and New Carbon Materials of Hubei Province, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan, Hubei 430081, P. R. China
| | - Wen-Zhen Li
- Interdisciplinary Institute of NMR and Molecular Sciences, Key Laboratory of Coal Conversion and New Carbon Materials of Hubei Province, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan, Hubei 430081, P. R. China
| | - Yu-Yuan Ye
- Interdisciplinary Institute of NMR and Molecular Sciences, Key Laboratory of Coal Conversion and New Carbon Materials of Hubei Province, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan, Hubei 430081, P. R. China
| | - Shi-Yuan Xu
- Interdisciplinary Institute of NMR and Molecular Sciences, Key Laboratory of Coal Conversion and New Carbon Materials of Hubei Province, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan, Hubei 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, Hubei 430072, P. R. China
| | - Xiao-Qiang Wang
- Interdisciplinary Institute of NMR and Molecular Sciences, Key Laboratory of Coal Conversion and New Carbon Materials of Hubei Province, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan, Hubei 430081, P. R. China
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3
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Al-Joumhawy MK, Chang JC, Assaf KI, Bassil BS, Gabel D. Functionalization of Dodecaborates by Mild and Efficient Pd-Catalyzed Formation of B-C Bonds with Boronic Acids. Chemistry 2023; 29:e202302466. [PMID: 37792566 DOI: 10.1002/chem.202302466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 10/02/2023] [Accepted: 10/04/2023] [Indexed: 10/06/2023]
Abstract
Hybrid organic-inorganic molecules have recently received great interest due to their unique properties, which give access to their implementation in biological and material sciences. Herein, a new synthetic approach for the direct-linkage of the purely inorganic dodecaborate cluster to organic building blocks through B-C bond is established, using boronic acids as functional groups on the organic moiety, reacting under Suzuki-Miyaura coupling conditions with iodo-undecahydridododecaborate. The choices of ligand (DavePhos) and solvent (N-methylpyrrolidone for electron-poor, CD3 CN for electron-rich groups) are essential for the successful coupling. Ultimately, the newly described methodology is found to be functional-group tolerant covering a wide spectrum of substrates including electron-poor arenes.
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Affiliation(s)
| | - Jui-Chi Chang
- School of Science, Constructor University, Campus Ring 1, 28759, Bremen, Germany
| | - Khaleel I Assaf
- Department of Chemistry, Faculty of Science, Al-Balqa Applied University, 19117, Al-Salt, Jordan
| | - Bassem S Bassil
- School of Science, Constructor University, Campus Ring 1, 28759, Bremen, Germany
| | - Detlef Gabel
- School of Science, Constructor University, Campus Ring 1, 28759, Bremen, Germany
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Abstract
Large water-soluble anions with chaotropic character display surprisingly strong supramolecular interactions in water, for example, with macrocyclic receptors, polymers, biomembranes, and other hydrophobic cavities and interfaces. The high affinity is traced back to a hitherto underestimated driving force, the chaotropic effect, which is orthogonal to the common hydrophobic effect. This review focuses on the binding of large anions with water-soluble macrocyclic hosts, including cyclodextrins, cucurbiturils, bambusurils, biotinurils, and other organic receptors. The high affinity of large anions to molecular receptors has been implemented in several lines of new applications, which are highlighted herein.
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Affiliation(s)
- Khaleel I Assaf
- Constructor University, School of Science, Campus Ring 1, 28759 Bremen, Germany.
- Department of Chemistry, Faculty of Science, Al-Balqa Applied University, 19117 Al-Salt, Jordan.
| | - Werner M Nau
- Constructor University, School of Science, Campus Ring 1, 28759 Bremen, Germany.
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5
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Supramolecular chemistry of anionic boron clusters and its applications in biology. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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6
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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: 3] [Impact Index Per Article: 1.5] [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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Casimiro A, Lugger J, Lub J, Nijmeijer K. Non-Globular Organic Ionic Plastic Crystal Containing a 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] [MESH Headings] [Grants] [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
- Membrane Materials and ProcessesDepartment of Chemical Engineering and ChemistryEindhoven University of TechnologyP.O. Box 5135600 MBEindhovenThe Netherlands
| | - Jody Lugger
- Membrane Materials and ProcessesDepartment of Chemical Engineering and ChemistryEindhoven University of TechnologyP.O. Box 5135600 MBEindhovenThe Netherlands
| | - Johan Lub
- Stimuli-responsive Functional Materials and DevicesDepartment of Chemical Engineering and ChemistryEindhoven University of TechnologyP.O. Box 5135600 MBEindhovenThe Netherlands
| | - Kitty Nijmeijer
- Membrane Materials and ProcessesDepartment of Chemical Engineering and ChemistryEindhoven University of TechnologyP.O. Box 5135600 MBEindhovenThe Netherlands
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8
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Boron-induced activation of Ru nanoparticles anchored on carbon nanotubes for the enhanced pH-independent hydrogen evolution reaction. J Colloid Interface Sci 2022; 616:338-346. [PMID: 35219199 DOI: 10.1016/j.jcis.2022.02.072] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 02/10/2022] [Accepted: 02/17/2022] [Indexed: 12/29/2022]
Abstract
As a promising dopant, electron deficient B atom not only tunes the electronic structure of electrocatalysts for improving their intrinsic catalytic activities, but also combines with hydroxy radical as strong adsorption sites for accelerating the water dissociation during the hydrogen evolution reaction (HER). In this paper, we report an electrocatalyst based on boron-modified Ru anchored on carbon nanotubes (B-Ru@CNT) that shows impressive HER activity in acidic and alkaline media. The boron-rich closo-[B12H12]2- borane was selected as a moderately strong reductant for the in situ reduction of a Ru salt, which yielded B-doped Ru nanoparticles. The experimental and theoretical results indicate that the incorporation of B not only weakens the Ru-H bond and downshifts the d-bond centre of Ru from the Fermi level by reducing the electron density at Ru but also accelerates the water dissociation reaction by providing B sites, which strongly adsorb OH* intermediates, and nearby Ru sites, which act as sites for the adsorption of the H* intermediate, thus boosting the HER performance and enhancing the HER kinetics. As a result of the tuning of the electronic structure via B doping, B-Ru@CNT showed excellent HER performance, yielding overpotentials of 17 and 62 mV at a current density of 10 mA cm-2 in alkaline and acidic solutions, respectively. These results indicate that our synthetic method is a promising route to B-doped metallic Ru with enhanced pH-independent HER performance.
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9
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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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10
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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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11
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12
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Al-Joumhawy M, Cendoya P, Shmalko A, Marei T, Gabel D. Improved synthesis of halo- and oxonium derivatives of dodecahydrido‑closo-dodecaborate(2-). J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.121967] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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13
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Chen L, Chen Y, Zhang Y, Liu Y. Photo‐Controllable Catalysis and Chiral Monosaccharide Recognition Induced by Cyclodextrin Derivatives. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202017001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Lei Chen
- College of Chemistry State Key Laboratory of Elemento-Organic Chemistry Nankai University Tianjin 300071 P. R. China
| | - Yong Chen
- College of Chemistry State Key Laboratory of Elemento-Organic Chemistry Nankai University Tianjin 300071 P. R. China
| | - Yi Zhang
- College of Chemistry State Key Laboratory of Elemento-Organic Chemistry Nankai University Tianjin 300071 P. R. China
| | - Yu Liu
- College of Chemistry State Key Laboratory of Elemento-Organic Chemistry Nankai University Tianjin 300071 P. R. China
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Photo‐Controllable Catalysis and Chiral Monosaccharide Recognition Induced by Cyclodextrin Derivatives. Angew Chem Int Ed Engl 2021; 60:7654-7658. [DOI: 10.1002/anie.202017001] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 01/03/2021] [Indexed: 01/30/2023]
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Improvement of Water Solubility of Mercaptoundecahydrododecaborate (BSH)-Peptides by Conjugating with Ethylene Glycol Linker and Interaction with Cyclodextrin. Processes (Basel) 2021. [DOI: 10.3390/pr9010167] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
We previously developed a conjugate consisting of 10B cluster BSH and tri-arginine peptide (BSH-3R). This could potentially be used as a boron agent for boron neutron capture therapy; however, it possesses poor water solubility and thus needs to be improved for use as medicine. In this study, we devised several means of improving the water solubility of BSH-3R. As one of them, we used cyclodextrin (CD), which was expected to improve the water solubility resulting from interaction of the BSH-3R with CD. We evaluated the solubility of BSH-3R in aqueous CD solution by using reverse-phase high-performance liquid chromatography. As we expected, the solubility of BSH-3R was increased in a manner dependent on the addition of β-CD and γ-CD in aqueous solution. Furthermore, we synthesized BSH conjugated to oligoarginine having various chain lengths (BSH-nR) and BSH-3R with ethylene glycol linkers introduced between BSH and 3R (BSH-nEg-3R). The water solubility of these BSH peptides was also evaluated and the results showed that the introduction of nEg to BSH-3R markedly improved the water solubility. Furthermore, we found that the water solubility of these peptides can be further improved by also applying CD.
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Fink K, Goszczyński TM. Solid-State, Thermal Synthesis of Peptide/Protein-Boron Cluster Conjugates. Methods Mol Biol 2021; 2355:93-104. [PMID: 34386953 DOI: 10.1007/978-1-0716-1617-8_9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Anionic boron clusters can be used to increase the pharmaceutical properties of the peptides. Here, we describe the method of synthesis of peptide/protein-boron cluster conjugates using solid-state, thermal reaction on two different peptides: thymosin β4 (Tβ4) and lysozyme. 1,4-dioxane oxonium derivatives of anionic boron clusters are used as donors of boron clusters. This procedure allows to conjugate anionic boron clusters to native peptides without loss of the activity of the peptides.
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Affiliation(s)
- Krzysztof Fink
- Laboratory of Biomedical Chemistry, Department of Experimental Oncology, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wroclaw, Poland
| | - Tomasz M Goszczyński
- Laboratory of Biomedical Chemistry, Department of Experimental Oncology, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wroclaw, Poland.
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Rohdenburg M, Yang Z, Su P, Bernhardt E, Yuan Q, Apra E, Grabowsky S, Laskin J, Jenne C, Wang XB, Warneke J. Properties of gaseous closo-[B 6X 6] 2- dianions (X = Cl, Br, I). Phys Chem Chem Phys 2020; 22:17713-17724. [PMID: 32728676 DOI: 10.1039/d0cp02581j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Electronic structure, collision-induced dissociation (CID) and bond properties of closo-[B6X6]2- (X = Cl-I) are investigated in direct comparison with their closo-[B12X12]2- analogues. Photoelectron spectroscopy (PES) and theoretical investigations reveal that [B6X6]2- dianions are electronically significantly less stable than the corresponding [B12X12]2- species. Although [B6Cl6]2- is slightly electronically unstable, [B6Br6]2- and [B6I6]2- are intrinsically stable dianions. Consistent with the trend in the electron detachment energy, loss of an electron (e- loss) is observed in CID of [B6X6]2- (X = Cl, Br) but not for [B6I6]2-. Halogenide loss (X- loss) is common for [B6X6]2- (X = Br, I) and [B12X12]2- (X = Cl, Br, I). Meanwhile, X˙ loss is only observed for [B12X12]2- (X = Br, I) species. The calculated reaction enthalpies of the three competing dissociation pathways (e-, X- and X˙ loss) indicated a strong influence of kinetic factors on the observed fragmentation patterns. The repulsive Coulomb barrier (RCB) determines the transition state for the e- and X- losses. A significantly lower RCB for X- loss than for e- loss was found in both experimental and theoretical investigations and can be rationalized by the recently introduced concept of electrophilic anions. The positive reaction enthalpies for X- losses are significantly lower for [B6X6]2- than for [B12X12]2-, while enthalpies for X˙ losses are higher. These observations are consistent with a difference in bond character of the B-X bonds in [B6X6]2- and [B12X12]2-. A complementary bonding analysis using QTAIM, NPA and ELI-D based methods suggests that B-X bonds in [B12X12]2- have a stronger covalent character than in [B6X6]2-, in which X has a stronger halide character.
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Affiliation(s)
- Markus Rohdenburg
- Institut für Angewandte und Physikalische Chemie, Universität Bremen, Fachbereich 2-Biologie/Chemie, 28359 Bremen, Germany
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Cubic platinum nanoparticles capped with Cs2[closo-B12H12] as an effective oxidation catalyst for converting methane to ethanol. J Colloid Interface Sci 2020; 566:135-142. [DOI: 10.1016/j.jcis.2020.01.047] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 01/13/2020] [Accepted: 01/14/2020] [Indexed: 11/20/2022]
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19
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Kang B, Tang H, Zhao Z, Song S. Hofmeister Series: Insights of Ion Specificity from Amphiphilic Assembly and Interface Property. ACS OMEGA 2020; 5:6229-6239. [PMID: 32258857 PMCID: PMC7114165 DOI: 10.1021/acsomega.0c00237] [Citation(s) in RCA: 137] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 03/13/2020] [Indexed: 05/04/2023]
Abstract
Hofmeister series (HS), ion specific effect, or lyotropic sequence acts as a pivotal part in a number of biological and physicochemical phenomena, e.g., changing the solubility of hydrophobic solutes, the cloud points of polymers and nonionic surfactants, the activities of various enzymes, the action of ions on an ion-channel, and the surface tension of electrolyte solutions, etc. This review focused on how ion specificity influences the critical micelle concentration (CMC) and how the thermoresponsive behavior of surfactants, and the dynamic transition of the aggregate, controls the aggregate transition and gel formation and tunes the properties of air/water interfaces (Langmuir monolayer and interfacial free energy). Recent progress of the ion specific effect in bulk phase and at interfaces in amphiphilic systems and gels is summarized. Applications and a molecular level theoretical explanation of HS are discussed comprehensively. This review is aimed to supply a fresh and comprehensive understanding of Hofmiester phenomena in surfactants, polymers, colloids, and interface science and to provide a guideline to design the microstructures and templates for preparation of nanomaterials.
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Affiliation(s)
- Beibei Kang
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255000, P. R. China
| | - Huicheng Tang
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255000, P. R. China
| | - Zengdian Zhao
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255000, P. R. China
| | - Shasha Song
- School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255000, P. R. China
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20
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Luo Y, Zhao X, Cai P, Pan Y. One-pot synthesis of an anionic cyclodextrin-stabilized bifunctional gold nanoparticles for visual chiral sensing and catalytic reduction. Carbohydr Polym 2020; 237:116127. [PMID: 32241398 DOI: 10.1016/j.carbpol.2020.116127] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Revised: 02/20/2020] [Accepted: 03/04/2020] [Indexed: 12/11/2022]
Abstract
A facile one-pot synthetic method for preparing gold nanoparticles by employing sugammadex (SUG), a carboxylic acid functionalized γ-cyclodextrin derivative, as reducing-cum-stabilizing agent herein was reported for the first time. The SUG protected gold nanoparticles (SUG-AuNPs) can work as a colorimetric sensor for visual chiral recognition of α-amino acids enantiomers, especially for lysine (Lys) and asparagine (Asn) enantiomers. The chiral recognition assay was successfully applied to determining the enantiometric excess of L-Lys and L-Asn ranging from -100 % to 100 % respectively. Moreover, the prepared SUG-AuNPs was found to exhibit efficient catalytic activity towards the reduction of toxic 4-nitrophenol by NaBH4 and the efficiency of the system was further demonstrated through the reduction of other typical nitroaromatics under mild condition. The as-synthesized SUG-AuNPs shows good performance for both chiral sensing and reduction activity and thus may facilitate the practical application in the area of both chiral discrimination and catalysis.
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Affiliation(s)
- Yuanqing Luo
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Xiaoyong Zhao
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Pengfei Cai
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Yuanjiang Pan
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China.
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21
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Su P, Smith AJ, Warneke J, Laskin J. Gas-Phase Fragmentation of Host-Guest Complexes of Cyclodextrins and Polyoxometalates. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2019; 30:1934-1945. [PMID: 31414375 DOI: 10.1007/s13361-019-02266-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 06/11/2019] [Accepted: 06/11/2019] [Indexed: 06/10/2023]
Abstract
Gas-phase fragmentation pathways of host-guest complexes of cyclodextrins (CDs) and polyoxometalates (POMs) were examined using collision-induced dissociation (CID). The host-guest complexes studied here were composed of two different classes of POMs-Keggin (PW12O403-) and Lindqvist (M6O192-, M = Mo, W)-and three types of CDs (α-, β-, and γ-CD) differing in the diameter of the inner cavity. The CD-POM complexes were generated either by mixing methanol solutions of POM and CD or through a one-step acidic condensation of tetraoxometalates MO42- (M = Mo, W) with CDs for complexes with Keggin and Lindqvist anions, respectively, and introduced into the gas phase using electrospray ionization (ESI). We observe distinct differences in fragmentation pathways of the complexes of Keggin and Lindqvist POMs under high- and low-energy CID conditions. Specifically, direct dissociation and proton transfer from CD to POM accompanied by the separation of fragments is observed in CID of Keggin CD-POM complexes. In contrast, dissociation of CD complexes with Lindqvist POMs is dominated by the simultaneous loss of multiple water molecules. This unusual fragmentation channel is attributed to dissociation of the POM cluster inside the CD cavity accompanied by covalent bond formation between the fragments and CD and elimination of multiple water molecules. The observed covalent coupling of metal oxide clusters opens up opportunities for derivatization of macrocyclic host molecules using collisional excitation of gaseous non-covalent complexes.
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Affiliation(s)
- Pei Su
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN, 47907, USA
| | - Andrew J Smith
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN, 47907, USA
| | - Jonas Warneke
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN, 47907, USA
- Wilhelm-Ostwald-Institut für Physikalische und Theoretische Chemie, Universität Leipzig, Linnestr. 2, 04103, Leipzig, Germany
| | - Julia Laskin
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN, 47907, USA.
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22
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Ivanov AA, Falaise C, Laouer K, Hache F, Changenet P, Mironov YV, Landy D, Molard Y, Cordier S, Shestopalov MA, Haouas M, Cadot E. Size-Exclusion Mechanism Driving Host–Guest Interactions between Octahedral Rhenium Clusters and Cyclodextrins. Inorg Chem 2019; 58:13184-13194. [DOI: 10.1021/acs.inorgchem.9b02048] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Anton A. Ivanov
- Institut Lavoisier de Versailles, UMR 8180 CNRS, UVSQ, Université Paris-Saclay, Versailles, France
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, Novosibirsk 630090, Russia
- The Federal Research Center of Fundamental and Translational Medicine, Novosibirsk 630117, Russia
| | - Clément Falaise
- Institut Lavoisier de Versailles, UMR 8180 CNRS, UVSQ, Université Paris-Saclay, Versailles, France
| | - Kevin Laouer
- Laboratoire d’Optique et Biosciences and Ecole Polytechnique, CNRS, INSERM, Institut polytechnique de Paris, Palaiseau 91128, France
| | - François Hache
- Laboratoire d’Optique et Biosciences and Ecole Polytechnique, CNRS, INSERM, Institut polytechnique de Paris, Palaiseau 91128, France
| | - Pascale Changenet
- Laboratoire d’Optique et Biosciences and Ecole Polytechnique, CNRS, INSERM, Institut polytechnique de Paris, Palaiseau 91128, France
| | - Yuri V. Mironov
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, Novosibirsk 630090, Russia
- Novosibirsk State University, Novosibirsk 630090, Russia
| | - David Landy
- Unité de Chimie Environnementale et Interactions sur le Vivant, ULCO, Dunkerque EA 4492, France
| | - Yann Molard
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS, Université de Rennes 1, Rennes, France
| | - Stéphane Cordier
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS, Université de Rennes 1, Rennes, France
| | - Michael A. Shestopalov
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, Novosibirsk 630090, Russia
- The Federal Research Center of Fundamental and Translational Medicine, Novosibirsk 630117, Russia
- Novosibirsk State University, Novosibirsk 630090, Russia
| | - Mohamed Haouas
- Institut Lavoisier de Versailles, UMR 8180 CNRS, UVSQ, Université Paris-Saclay, Versailles, France
| | - Emmanuel Cadot
- Institut Lavoisier de Versailles, UMR 8180 CNRS, UVSQ, Université Paris-Saclay, Versailles, France
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23
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Assaf KI, Begaj B, Frank A, Nilam M, Mougharbel AS, Kortz U, Nekvinda J, Grüner B, Gabel D, Nau WM. High-Affinity Binding of Metallacarborane Cobalt Bis(dicarbollide) Anions to Cyclodextrins and Application to Membrane Translocation. J Org Chem 2019; 84:11790-11798. [DOI: 10.1021/acs.joc.9b01688] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Khaleel I. Assaf
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Campus Ring 1, D-28759 Bremen, Germany
- Department of Chemistry, Faculty of Science, Al-Balqa Applied University, Al-Salt 19117, Jordan
| | - Barbara Begaj
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Campus Ring 1, D-28759 Bremen, Germany
| | - Angelina Frank
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Campus Ring 1, D-28759 Bremen, Germany
| | - Mohamed Nilam
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Campus Ring 1, D-28759 Bremen, Germany
| | - Ali S. Mougharbel
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Campus Ring 1, D-28759 Bremen, Germany
| | - Ulrich Kortz
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Campus Ring 1, D-28759 Bremen, Germany
| | - Jan Nekvinda
- Institute of Inorganic Chemistry, Czech Academy of Sciences, v.v.i., Hlavní 1001, CZ-250 68 Řež, Czech Republic
| | - Bohumír Grüner
- Institute of Inorganic Chemistry, Czech Academy of Sciences, v.v.i., Hlavní 1001, CZ-250 68 Řež, Czech Republic
| | - Detlef Gabel
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Campus Ring 1, D-28759 Bremen, Germany
| | - Werner M. Nau
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Campus Ring 1, D-28759 Bremen, Germany
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24
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Sun S, Lu D, Huang Q, Liu Q, Yao Y, Shi Y. Reversible surface activity and self-assembly behavior and transformation of amphiphilic ionic liquids in water induced by a pillar[5]arene-based host-guest interaction. J Colloid Interface Sci 2019; 533:42-46. [DOI: 10.1016/j.jcis.2018.08.051] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 08/13/2018] [Accepted: 08/15/2018] [Indexed: 11/24/2022]
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25
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Larm NE, Madugula D, Lee MW, Baker GA. Polyhedral borane-capped coinage metal nanoparticles as high-performing catalysts for 4-nitrophenol reduction. Chem Commun (Camb) 2019; 55:7990-7993. [DOI: 10.1039/c9cc03428e] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Small (<5 nm) gold and silver nanoparticles and their bimetallic counterparts were prepared using the fundamental boron cluster [closo-B10H10]2− as the reducing and stabilizing agent.
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Affiliation(s)
| | | | - Mark W. Lee
- Department of Chemistry
- University of Missouri
- Columbia
- USA
| | - Gary A. Baker
- Department of Chemistry
- University of Missouri
- Columbia
- USA
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26
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Zhang S, Domínguez Z, Assaf KI, Nilam M, Thiele T, Pischel U, Schedler U, Nau WM, Hennig A. Precise supramolecular control of surface coverage densities on polymer micro- and nanoparticles. Chem Sci 2018; 9:8575-8581. [PMID: 30568782 PMCID: PMC6253680 DOI: 10.1039/c8sc03150a] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Accepted: 09/17/2018] [Indexed: 12/14/2022] Open
Abstract
We report herein the controlled surface functionalization of micro- and nanoparticles by supramolecular host-guest interactions. Our idea is to exploit the competition of two high-affinity guests for binding to the surface-bound supramolecular host cucurbit[7]uril (CB7). To establish our strategy, surface azide groups were introduced to hard-sphere (poly)methylmethacrylate particles with a grafted layer of poly(acrylic acid), and a propargyl derivative of CB7 was coupled to the surface by click chemistry. The amount of surface-bound CB7 was quantified with the high-affinity guest aminomethyladamantane (AMADA), which revealed CB7 surface coverage densities around 0.3 nmol cm-2 indicative of a 3D layer of CB7 binding sites on the surface. The potential for surface functionalization was demonstrated with an aminoadamantane-labeled rhodamine (Ada-Rho) as a second high-affinity guest. Simultaneous incubation of CB7-functionalized particles with both high-affinity guests, AMADA and Ada-Rho, revealed a simple linear relationship between the resulting surface coverage densities of the model fluorescent dye and the mole fraction of Ada-Rho in the incubation mixture. This suggests a highly modular supramolecular strategy for the stable immobilization of application-relevant molecules on particle surfaces and a precise control of their surface coverage densities.
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Affiliation(s)
- Shuai Zhang
- Department of Life Sciences and Chemistry , Jacobs University Bremen , Campus Ring 1 , D-28759 Bremen , Germany .
| | - Zoe Domínguez
- PolyAn GmbH , Rudolf-Baschant-Strasse 2 , D-13086 Berlin , Germany
| | - Khaleel I Assaf
- Department of Life Sciences and Chemistry , Jacobs University Bremen , Campus Ring 1 , D-28759 Bremen , Germany .
| | - Mohamed Nilam
- Department of Life Sciences and Chemistry , Jacobs University Bremen , Campus Ring 1 , D-28759 Bremen , Germany .
| | - Thomas Thiele
- CIQSO - Center for Research in Sustainable Chemistry , Department of Chemistry , University of Huelva , Campus de El Carmen , E-21071 Huelva , Spain
| | - Uwe Pischel
- PolyAn GmbH , Rudolf-Baschant-Strasse 2 , D-13086 Berlin , Germany
| | - Uwe Schedler
- CIQSO - Center for Research in Sustainable Chemistry , Department of Chemistry , University of Huelva , Campus de El Carmen , E-21071 Huelva , Spain
| | - Werner M Nau
- Department of Life Sciences and Chemistry , Jacobs University Bremen , Campus Ring 1 , D-28759 Bremen , Germany .
| | - Andreas Hennig
- Department of Life Sciences and Chemistry , Jacobs University Bremen , Campus Ring 1 , D-28759 Bremen , Germany .
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27
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Qi B, Li X, Sun L, Chen B, Chen H, Wu C, Zhang H, Zhou X. In situ synthesis of ultrafine metal clusters triggered by dodecaborate supramolecular organic frameworks. NANOSCALE 2018; 10:19846-19853. [PMID: 30335115 DOI: 10.1039/c8nr06917d] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Supramolecular nano-assemblies with tunable morphology have attracted extensive attention in composite material manufacturing and many other fields. Herein, a new class of shape-controlled dodecaborate-based supramolecular organic frameworks (BOFs), decorated with diverse ultrafine noble metal clusters (Au, Pd, Pt, Ag), has been successfully fabricated via the tunable host-guest assembly of cucurbit[n = 5,6,7,8]uril and Cs2[closo-B12H12]. Due to the unique dodecaborate-cucurbit[n]uril chaotropic effect, a breakthrough has been made in modulating the supramolecular frameworks in the urchin-like, network-like or octahedron-like structures without tedious chemical modifications or additional additives. More interestingly, Cs2[closo-B12H12], a prominent component in supramolecular structures, can also play dual roles as an excellent reductant and capping agent for the formation of metal clusters. The final product, i.e., BOFs decorated with ultrafine metal clusters (metal/BOFs) can be precipitated from aqueous solutions rapidly and they show high catalytic activity and recyclability in Suzuki reactions and in the selective reduction of furfural (FAL) to furfuryl alcohol (FOL).
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Affiliation(s)
- Bin Qi
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China.
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28
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Fink K, Kobak K, Kasztura M, Boratyński J, Goszczyński TM. Synthesis and Biological Activity of Thymosin β4-Anionic Boron Cluster Conjugates. Bioconjug Chem 2018; 29:3509-3515. [DOI: 10.1021/acs.bioconjchem.8b00646] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Krzysztof Fink
- Laboratory of Biomedical Chemistry, Department of Experimental Oncology, Hirszfeld Institute of Immunology and Experimental Therapy PAS, 12 Rudolf Weigl Street, 53-114 Wrocław, Poland
| | - Kamil Kobak
- Laboratory for Applied Research on Cardiovascular System, Department of Heart Diseases, Wrocław Medical University, 5 Rudolf Weigl Street, 50-981 Wrocław, Poland
| | - Monika Kasztura
- Laboratory for Applied Research on Cardiovascular System, Department of Heart Diseases, Wrocław Medical University, 5 Rudolf Weigl Street, 50-981 Wrocław, Poland
| | - Janusz Boratyński
- Laboratory of Biomedical Chemistry, Department of Experimental Oncology, Hirszfeld Institute of Immunology and Experimental Therapy PAS, 12 Rudolf Weigl Street, 53-114 Wrocław, Poland
| | - Tomasz M. Goszczyński
- Laboratory of Biomedical Chemistry, Department of Experimental Oncology, Hirszfeld Institute of Immunology and Experimental Therapy PAS, 12 Rudolf Weigl Street, 53-114 Wrocław, Poland
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29
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Assaf KI, Nau WM. The Chaotropic Effect as an Assembly Motif in Chemistry. Angew Chem Int Ed Engl 2018; 57:13968-13981. [PMID: 29992706 PMCID: PMC6220808 DOI: 10.1002/anie.201804597] [Citation(s) in RCA: 199] [Impact Index Per Article: 33.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 07/01/2018] [Indexed: 11/26/2022]
Abstract
Following up on scattered reports on interactions of conventional chaotropic ions (for example, I- , SCN- , ClO4- ) with macrocyclic host molecules, biomolecules, and hydrophobic neutral surfaces in aqueous solution, the chaotropic effect has recently emerged as a generic driving force for supramolecular assembly, orthogonal to the hydrophobic effect. The chaotropic effect becomes most effective for very large ions that extend beyond the classical Hofmeister scale and that can be referred to as superchaotropic ions (for example, borate clusters and polyoxometalates). In this Minireview, we present a continuous scale of water-solute interactions that includes the solvation of kosmotropic, chaotropic, and hydrophobic solutes, as well as the creation of void space (cavitation). Recent examples for the association of chaotropic anions to hydrophobic synthetic and biological binding sites, lipid bilayers, and surfaces are discussed.
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Affiliation(s)
- Khaleel I. Assaf
- Department of Life Sciences and ChemistryJacobs University BremenCampus Ring 128759BremenGermany
| | - Werner M. Nau
- Department of Life Sciences and ChemistryJacobs University BremenCampus Ring 128759BremenGermany
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30
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Zhang Y, Wang T, Wang L, Sun Y, Lin F, Liu J, Duttwyler S. RhIII
-Catalyzed Functionalization of closo
-Dodecaborates by Selective B−H Activation: Bypassing Competitive C−H Activation. Chemistry 2018; 24:15812-15817. [DOI: 10.1002/chem.201803455] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Indexed: 12/29/2022]
Affiliation(s)
- Yuanbin Zhang
- Department of Chemistry; Zhejiang University; 38 Zheda Road 310027 Hangzhou P. R. China
| | - Tao Wang
- Department of Chemistry; Zhejiang University; 38 Zheda Road 310027 Hangzhou P. R. China
| | - Lingyao Wang
- Department of Chemistry; Zhejiang University; 38 Zheda Road 310027 Hangzhou P. R. China
| | - Yuji Sun
- Department of Chemistry; Zhejiang University; 38 Zheda Road 310027 Hangzhou P. R. China
| | - Furong Lin
- Department of Chemistry; Zhejiang University; 38 Zheda Road 310027 Hangzhou P. R. China
| | - Jiyong Liu
- Department of Chemistry; Zhejiang University; 38 Zheda Road 310027 Hangzhou P. R. China
| | - Simon Duttwyler
- Department of Chemistry; Zhejiang University; 38 Zheda Road 310027 Hangzhou P. R. China
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31
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Affiliation(s)
- Khaleel I. Assaf
- Department of Life Sciences and Chemistry; Jacobs University Bremen; Campus Ring 1 28759 Bremen Deutschland
| | - Werner M. Nau
- Department of Life Sciences and Chemistry; Jacobs University Bremen; Campus Ring 1 28759 Bremen Deutschland
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32
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Li D, Qi L. Self-assembly of inorganic nanoparticles mediated by host-guest interactions. Curr Opin Colloid Interface Sci 2018. [DOI: 10.1016/j.cocis.2018.01.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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33
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Assaf KI, Alnajjar MA, Nau WM. Supramolecular assemblies through host-guest complexation between cucurbiturils and an amphiphilic guest molecule. Chem Commun (Camb) 2018; 54:1734-1737. [PMID: 29376528 DOI: 10.1039/c7cc09519h] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
We report the formation of supramolecular complexation between cucurbit[n]urils (CBn) and an amphiphilic pyridinium-functionalized anthracene (AnPy) in aqueous solution. The CB7 cavity is capable of accommodating the pyridinium moiety, while CB8 can encapsulate the pyridinium and anthracene moieties at once. The encapsulation of AnPy by CB7 leads to the formation of nanoparticles, while the complexation of AnPy with CB8 leads to the formation of nanorods.
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Affiliation(s)
- Khaleel I Assaf
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Campus Ring 1, 28759, Bremen, Germany.
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34
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Saini M, Verma A, Tomar K, Bharadwaj PK, Sadhu KK. Regioisomeric cryptand stabilized gold supraspheres and elongated dodecahedron supraparticles for reversible host–guest chemistry. Chem Commun (Camb) 2018; 54:12836-12839. [DOI: 10.1039/c8cc07589a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Addition of cryptand regioisomers 1 and 2 to AuNPs produces supraspheres and elongated dodecahedron supraparticles, respectively, apposite for host–guest chemistry.
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Affiliation(s)
- Meenaxi Saini
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee – 247667
- India
| | - Ashish Verma
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur – 208016
- India
| | - Kapil Tomar
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur – 208016
- India
| | - Parimal K. Bharadwaj
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur – 208016
- India
| | - Kalyan K. Sadhu
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee – 247667
- India
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35
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Qi B, Wu C, Xu L, Wang W, Cao J, Liu J, Zhang S, Gabel D, Zhang H, Zhou X. From boron clusters to gold clusters: new label-free colorimetric sensors. Chem Commun (Camb) 2017; 53:11790-11793. [DOI: 10.1039/c7cc06607d] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Based on boron clusters, AuNPs were successfully prepared and exhibited high performance in phase transfer and heavy-metal ion sensing.
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Affiliation(s)
- Bin Qi
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
- China
| | - Chenchen Wu
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
- China
| | - Ling Xu
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
- China
| | - Wenjing Wang
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
- China
| | - Jin Cao
- Hubei Gedian Humanwell Pharmaceutical Excipents Co
- Ltd. Gedian
- China
| | - Jun Liu
- Hunan University of Arts and Science
- Changde
- China
| | - Shuai Zhang
- Department of Life Sciences and Chemistry
- Jacobs University Bremen
- Germany
| | - Detlef Gabel
- Department of Life Sciences and Chemistry
- Jacobs University Bremen
- Germany
| | - Haibo Zhang
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
- China
| | - Xiaohai Zhou
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
- China
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