51
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Dhara S, Ansari MA, Lahiri GK. Host–Guest Feature of DPPP Bridged Arene–Ruthenium Clip Derived Molecular Rectangle. Inorg Chem 2019; 58:10991-10999. [DOI: 10.1021/acs.inorgchem.9b01468] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Suman Dhara
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India
| | - Mohd. Asif Ansari
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India
| | - Goutam Kumar Lahiri
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India
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52
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Singh J, Park DW, Kim DH, Singh N, Kang SC, Chi KW. Coordination-Driven Self-Assembly of Triazole-Based Apoptosis-Inducible Metallomacrocycles. ACS OMEGA 2019; 4:10810-10817. [PMID: 31460178 PMCID: PMC6649141 DOI: 10.1021/acsomega.9b00093] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 06/10/2019] [Indexed: 06/10/2023]
Abstract
Ru(II)-metallomacrocycles containing 4-pyridyl-1,2,3-triazole moiety were realized by coordination-driven self-assembly. All new compounds were characterized by electrospray ionisation mass spectrometry, elemental analysis, and 1H and 13C NMR spectroscopic techniques. The molecular structure of metallomacrocycle 8 was determined by single-crystal X-ray crystallography. The anticancer activities of metallomacrocycles 5-8 were evaluated by cytotoxicity, cell cycle analysis, and related protein expression. Metallomacrocycle 7 showed the highest cytotoxicity in HepG2 human hepatocellular carcinoma cells. In addition, apoptotic HepG2 cells were analyzed when metallomacrocycle 7 was treated. Our results suggest that metallomacrocycle 7 induces liver cancer cell death by increasing apoptosis and cell cycle arrest and that it has potential use as an agent for the treatment of human hepatocellular carcinoma.
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Affiliation(s)
- Jatinder Singh
- Department
of Chemistry, University of Ulsan, Ulsan 44776, Republic of Korea
| | - Dae Won Park
- Department
of Oriental Medicine Biotechnology, College of Life Sciences, Kyung Hee University, Yongin 17104, Republic of Korea
| | - Dong Hwan Kim
- Department
of Chemistry, University of Ulsan, Ulsan 44776, Republic of Korea
| | - Nem Singh
- Department
of Chemistry, University of Ulsan, Ulsan 44776, Republic of Korea
| | - Se Chan Kang
- Department
of Oriental Medicine Biotechnology, College of Life Sciences, Kyung Hee University, Yongin 17104, Republic of Korea
| | - Ki-Whan Chi
- Department
of Chemistry, University of Ulsan, Ulsan 44776, Republic of Korea
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53
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Feng H, Gao W, Lin Y, Jin G. Selective Synthesis of Discrete Mono‐, Interlocked‐, and Borromean Ring Ensembles Based on a
π
‐Electron‐Deficient Ligand. Chem Asian J 2019; 14:2712-2718. [DOI: 10.1002/asia.201900741] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Indexed: 12/14/2022]
Affiliation(s)
- Hui‐Jun Feng
- Shanghai Key Laboratory of Molecular Catalysis and Innovative MaterialsState Key Laboratory of Molecular Engineering of PolymersDepartment of ChemistryFudan University Shanghai 200433 P. R. China
| | - Wen‐Xi Gao
- Shanghai Key Laboratory of Molecular Catalysis and Innovative MaterialsState Key Laboratory of Molecular Engineering of PolymersDepartment of ChemistryFudan University Shanghai 200433 P. R. China
| | - Yue‐Jian Lin
- Shanghai Key Laboratory of Molecular Catalysis and Innovative MaterialsState Key Laboratory of Molecular Engineering of PolymersDepartment of ChemistryFudan University Shanghai 200433 P. R. China
| | - Guo‐Xin Jin
- Shanghai Key Laboratory of Molecular Catalysis and Innovative MaterialsState Key Laboratory of Molecular Engineering of PolymersDepartment of ChemistryFudan University Shanghai 200433 P. R. China
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54
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Gao WX, Feng HJ, Lin YJ, Jin GX. Covalent Post-assembly Modification Triggers Structural Transformations of Borromean Rings. J Am Chem Soc 2019; 141:9160-9164. [DOI: 10.1021/jacs.9b02985] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Wen-Xi Gao
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers, Department of Chemistry, Fudan University, Shanghai 200433, P. R. China
| | - Hui-Jun Feng
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers, Department of Chemistry, Fudan University, Shanghai 200433, P. R. China
| | - Yue-Jian Lin
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers, Department of Chemistry, Fudan University, Shanghai 200433, P. R. China
| | - Guo-Xin Jin
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers, Department of Chemistry, Fudan University, Shanghai 200433, P. R. China
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55
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Coordination-driven self-assembly of a molecular figure-eight knot and other topologically complex architectures. Nat Commun 2019; 10:2057. [PMID: 31053709 PMCID: PMC6499799 DOI: 10.1038/s41467-019-10075-6] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 04/08/2019] [Indexed: 11/10/2022] Open
Abstract
Over the past decades, molecular knots and links have captivated the chemical community due to their promising mimicry properties in molecular machines and biomolecules and are being realized with increasing frequency with small molecules. Herein, we describe how to utilize stacking interactions and hydrogen-bonding patterns to form trefoil knots, figure-eight knots and [2]catenanes. A transformation can occur between the unique trefoil knot and its isomeric boat-shaped tetranuclear macrocycle by the complementary concentration effect. Remarkably, the realization and authentication of the molecular figure-eight knot with four crossings fills the blank about 41 knot in knot tables. The [2]catenane topology is obtained because the selective naphthalenediimide (NDI)-based ligand, which can engender favorable aromatic donor-acceptor π interactions due to its planar, electron-deficient aromatic surface. The stacking interactions and hydrogen-bond interactions play important roles in these self-assembly processes. The advantages provide an avenue for the generation of structurally and topologically complex supramolecular architectures. Molecular knots and links continue to fascinate synthetic chemists. Here, the authors use stacking and hydrogen-bonding interactions between a set of similar building blocks to construct several complex molecular topologies, including a figure-eight knot and a trefoil knot.
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56
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Shan W, Lin Y, Hahn FE, Jin G. Selektive Synthese von Iridium(III)‐Metalla[2]catenanen durch Präorganisation der Komponenten über π‐π‐Wechselwirkungen. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201900556] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Wei‐Long Shan
- State Key Laboratory of Molecular Engineering of PolymersDepartment of ChemistryFudan University Shanghai 200433 V. R. China
| | - Yue‐Jian Lin
- State Key Laboratory of Molecular Engineering of PolymersDepartment of ChemistryFudan University Shanghai 200433 V. R. China
| | - F. Ekkehardt Hahn
- Institut für Anorganische und Analytische ChemieWestfälische Wilhelms-Universität Münster Corrensstraße 30 48149 Münster Deutschland
| | - Guo‐Xin Jin
- State Key Laboratory of Molecular Engineering of PolymersDepartment of ChemistryFudan University Shanghai 200433 V. R. China
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57
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Shan W, Lin Y, Hahn FE, Jin G. Highly Selective Synthesis of Iridium(III) Metalla[2]catenanes through Component Pre‐Orientation by π⋅⋅⋅π Stacking. Angew Chem Int Ed Engl 2019; 58:5882-5886. [DOI: 10.1002/anie.201900556] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Indexed: 01/27/2023]
Affiliation(s)
- Wei‐Long Shan
- State Key Laboratory of Molecular Engineering of PolymersDepartment of ChemistryFudan University Shanghai 200433 P. R. China
| | - Yue‐Jian Lin
- State Key Laboratory of Molecular Engineering of PolymersDepartment of ChemistryFudan University Shanghai 200433 P. R. China
| | - F. Ekkehardt Hahn
- Institut für Anorganische und Analytische ChemieWestfälische Wilhelms-Universität Münster Corrensstraße 30 48149 Münster Germany
| | - Guo‐Xin Jin
- State Key Laboratory of Molecular Engineering of PolymersDepartment of ChemistryFudan University Shanghai 200433 P. R. China
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58
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Siddiqui MM, Saha R, Mukherjee PS. Ruthenium(II) Metalla[2]catenanes and Macrocycles via Donor-Dependent Self-Assembly. Inorg Chem 2019; 58:4491-4499. [DOI: 10.1021/acs.inorgchem.9b00019] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Mujahuddin M. Siddiqui
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Rupak Saha
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Partha Sarathi Mukherjee
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
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59
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Facile construction of Zn(II)-porphyrin-cored [5]rotaxane and its controllable aggregation behaviours. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2018.10.035] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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60
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Singh J, Kim DH, Kim EH, Singh N, Kim H, Hadiputra R, Jung J, Chi KW. Selective and quantitative synthesis of a linear [3]catenane by two component coordination-driven self-assembly. Chem Commun (Camb) 2019; 55:6866-6869. [DOI: 10.1039/c9cc03336j] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Coordination-driven self-assembly and synergistic non-covalent intercycler interactions (π–π, CH–π and CH–N) for the selective formation of a linear [3]catenane.
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Affiliation(s)
- Jatinder Singh
- Department of Chemistry
- University of Ulsan
- Ulsan 44610
- Republic of Korea
| | - Dong Hwan Kim
- Department of Chemistry
- University of Ulsan
- Ulsan 44610
- Republic of Korea
| | - Eun-Hee Kim
- Protein Structure Group
- Korea Basic Science Institute
- Ochang
- Chungbuk 28119
- Republic of Korea
| | - Nem Singh
- Department of Chemistry
- University of Ulsan
- Ulsan 44610
- Republic of Korea
| | - Hyunuk Kim
- Energy Materials Laboratory
- Korea Institute of Energy Research
- Daejeon 34129
- Republic of Korea
| | - Rizky Hadiputra
- Department of Chemistry
- University of Ulsan
- Ulsan 44610
- Republic of Korea
| | - Jaehoon Jung
- Department of Chemistry
- University of Ulsan
- Ulsan 44610
- Republic of Korea
| | - Ki-Whan Chi
- Department of Chemistry
- University of Ulsan
- Ulsan 44610
- Republic of Korea
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61
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Gou XX, Peng JX, Das R, Wang YY, Han YF. On/off fluorescence emission induced by encapsulation, exchange and reversible encapsulation of a BODIPY-guest in self-assembled organometallic cages. Dalton Trans 2019; 48:7236-7241. [DOI: 10.1039/c8dt05103h] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A reversible fluorescence turn off/on switch induced by the encapsulation and release of a guest molecule within an organometallic cage was presented.
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Affiliation(s)
- Xing-Xing Gou
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry
- FM & EM International Joint Laboratory
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710127
| | - Jia-Xin Peng
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry
- FM & EM International Joint Laboratory
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710127
| | - Rajorshi Das
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry
- FM & EM International Joint Laboratory
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710127
| | - Yao-Yu Wang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry
- FM & EM International Joint Laboratory
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710127
| | - Ying-Feng Han
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry
- FM & EM International Joint Laboratory
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710127
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62
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Gupta G, Cherukommu S, Srinivas G, Lee SW, Mun SH, Jung J, Nagesh N, Lee CY. BODIPY-based Ru(II) and Ir(III) organometallic complexes of avobenzone, a sunscreen material: Potent anticancer agents. J Inorg Biochem 2018; 189:17-29. [DOI: 10.1016/j.jinorgbio.2018.08.009] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2018] [Revised: 08/08/2018] [Accepted: 08/09/2018] [Indexed: 12/14/2022]
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63
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Coordination-driven self-assembly and anticancer studies of thiophene-derived donor and arene ruthenium acceptors. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.05.035] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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64
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Lu Y, Zhang HN, Jin GX. Molecular Borromean Rings Based on Half-Sandwich Organometallic Rectangles. Acc Chem Res 2018; 51:2148-2158. [PMID: 29987929 DOI: 10.1021/acs.accounts.8b00220] [Citation(s) in RCA: 123] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Over the last two decades, interlocked molecular species have received considerable attention, not only because of their intriguing structures and topological importance, but also because of their potential applications as smart materials, nanoscale devices, and molecular machines. Through judicious choice of metal centers and their adjoining ligands, a range of interesting interlocked structures have been realized by coordination-driven self-assembly. In addition, researchers have extensively developed synthetic methodologies for the construction of organized self-assemblies. One fascinating and challenging synthetic target in this field is the family of molecular Borromean rings, which consist of three chemically independent rings that are locked in such a way that no two of the three rings are linked with each other. Toward this goal, we have developed a template-free self-assembly method for synthesizing molecular Borromean rings by rationally designing metal-containing precursors and organic ligands. In this Account, we present our recent work, focusing on interlocked structures comprising half-sandwich iridium- and rhodium-based organometallic assemblies obtained by rational design. We first describe a series of template-free self-assembled organometallic molecular Borromean rings, which we constructed from preorganized binuclear half-sandwich molecular clips and suitable pyridyl ligands. These molecular Borromean rings can be sorted into four types according to their different bridging ligands, including those based on metallaligands, dihalogenated ligands, naphthazarin and π-acceptor ligands. By single-crystal X-ray crystallographic analysis, NMR experiment, and DFT calculation, we discuss their driving forces and the inter-ring interactions. Furthermore, we took advantage of the dissimilarity in their interactions to realize selective, reversible conversions between molecular Borromean rings and monomeric rectangles by the use of suitable solvents or guest molecules. Subsequently, a stepwise chemoseparation method based on molecular Borromean rings was established, with the molecular Borromean rings used in the separation being recoverable and recyclable. Due to their structural complexity and difficult synthesis, useful guidelines or rules to help design complicated interlocked molecules are highly desirable. We also highlight our efforts to develop empirical guidelines to uncover the relationship between the aspect ratio of metallarectangles and the formation or stability of molecular Borromean rings. An empirical formula has further been established to show the approximate ratio of lengths of the short arm and the long arm in molecular Borromean rings based on π-π (or p-π) stacking. We then demonstrate how to use these guidelines to design new molecular Borromean rings and further lead to other interlocked structures, for example, [2]- and [3]catenane structures. Taken together, our results may lead to a promising future for the design of fascinating and useful interlocked structures by coordination-driven self-assembly.
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Affiliation(s)
- Ye Lu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200433, China
| | - Hai-Ning Zhang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200433, China
| | - Guo-Xin Jin
- State Key Laboratory of Molecular Engineering of Polymers, Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200433, China
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65
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Kim DH, Singh N, Oh J, Kim EH, Jung J, Kim H, Chi KW. Coordination-Driven Self-Assembly of a Molecular Knot Comprising Sixteen Crossings. Angew Chem Int Ed Engl 2018; 57:5669-5673. [PMID: 29569315 DOI: 10.1002/anie.201800638] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Indexed: 02/06/2023]
Abstract
Molecular knots have become highly attractive to chemists because of their prospective properties in mimicking biomolecules and machines. Only a few examples of molecular knots from the billions tabulated by mathematicians have been realized and molecular knots with more than eight crossings have not been reported to date. We report here the coordination-driven [8+8] self-assembly of a higher-generation molecular knot comprising as many as sixteen crossings. Its solid-state X-ray crystal structure and multinuclear 2D NMR findings confirmed its architecture and topology. The formation of this molecular knot appears to depend on the functionalities and geometries of donor and acceptor in terms of generating appropriate angles and strong π-π interactions supported by hydrophobic effects. This study shows coordination-driven self-assembly offers a powerful potential means of synthesizing more and more complicated molecular knots and of understanding differences between the properties of knotted and unknotted structures.
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Affiliation(s)
- Dong Hwan Kim
- Department of Chemistry, University of Ulsan, Ulsan, 44610, Republic of Korea
| | - Nem Singh
- Department of Chemistry, University of Ulsan, Ulsan, 44610, Republic of Korea
| | - Jihun Oh
- Department of Chemistry, University of Ulsan, Ulsan, 44610, Republic of Korea
| | - Eun-Hee Kim
- Protein Structure Group, Korea Basic Science Institute, Ochang, Chungbuk, 28119, Republic of Korea
| | - Jaehoon Jung
- Department of Chemistry, University of Ulsan, Ulsan, 44610, Republic of Korea
| | - Hyunuk Kim
- Energy Materials Laboratory, Korea Institute of Energy Research, Daejeon, 34129, Republic of Korea
| | - Ki-Whan Chi
- Department of Chemistry, University of Ulsan, Ulsan, 44610, Republic of Korea
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66
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Kim DH, Singh N, Oh J, Kim EH, Jung J, Kim H, Chi KW. Coordination-Driven Self-Assembly of a Molecular Knot Comprising Sixteen Crossings. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201800638] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Dong Hwan Kim
- Department of Chemistry; University of Ulsan; Ulsan 44610 Republic of Korea
| | - Nem Singh
- Department of Chemistry; University of Ulsan; Ulsan 44610 Republic of Korea
| | - Jihun Oh
- Department of Chemistry; University of Ulsan; Ulsan 44610 Republic of Korea
| | - Eun-Hee Kim
- Protein Structure Group; Korea Basic Science Institute; Ochang Chungbuk 28119 Republic of Korea
| | - Jaehoon Jung
- Department of Chemistry; University of Ulsan; Ulsan 44610 Republic of Korea
| | - Hyunuk Kim
- Energy Materials Laboratory; Korea Institute of Energy Research; Daejeon 34129 Republic of Korea
| | - Ki-Whan Chi
- Department of Chemistry; University of Ulsan; Ulsan 44610 Republic of Korea
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67
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Govindarajan R, Divya D, Nagarajaprakash R, Manimaran B. Synthesis and Characterization of Aminoquinonato Bridged Re(I)-Based Amide Functionalized Dinuclear Metallastirrups and Tetranuclear Lemniscate Metallacycles. ChemistrySelect 2018. [DOI: 10.1002/slct.201800296] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
| | - Dhanaraj Divya
- Department of Chemistry; Pondicherry University; Puducherry 605014 India
| | | | - Bala. Manimaran
- Department of Chemistry; Pondicherry University; Puducherry 605014 India
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68
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Singh N, Singh J, Kim D, Kim DH, Kim EH, Lah MS, Chi KW. Coordination-Driven Self-Assembly of Heterotrimetallic Barrel and Bimetallic Cages Using a Cobalt Sandwich-Based Tetratopic Donor. Inorg Chem 2018; 57:3521-3528. [DOI: 10.1021/acs.inorgchem.7b02653] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Nem Singh
- Department of Chemistry, University of Ulsan, Ulsan 44610, Republic of Korea
| | - Jatinder Singh
- Department of Chemistry, University of Ulsan, Ulsan 44610, Republic of Korea
| | - Dongwook Kim
- Department of Chemistry, Ulsan National Institute of Science & Technology, Ulsan 44919, Republic of Korea
| | - Dong Hwan Kim
- Department of Chemistry, University of Ulsan, Ulsan 44610, Republic of Korea
| | - Eun-Hee Kim
- Republic of Korea Protein Structure Group, Korea Basic Science Institute, Ochang, Chungbuk 28119, Republic of Korea
| | - Myoung Soo Lah
- Department of Chemistry, Ulsan National Institute of Science & Technology, Ulsan 44919, Republic of Korea
| | - Ki-Whan Chi
- Department of Chemistry, University of Ulsan, Ulsan 44610, Republic of Korea
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69
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Guo BB, Gao WX, Lin YJ, Jin GX. Construction of half-sandwich multinuclear complexes including tunnel architectures via C–H-activation-directed assembly. Dalton Trans 2018; 47:7701-7708. [DOI: 10.1039/c8dt01140k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Half-sandwich bi-, tetra-, hexa- and octanuclear complexes were prepared via C–H-activation-directed assembly based on three aromatic ligands. A series of tunnel architectures were observed in the complexes, with guest molecules in certain parts.
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Affiliation(s)
- Bei-Bei Guo
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials
- State Key Laboratory of Molecular Engineering of Polymers
- Collaborative Innovation Center of Chemistry for Energy Materials
- Department of Chemistry
- Fudan University
| | - Wen-Xi Gao
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials
- State Key Laboratory of Molecular Engineering of Polymers
- Collaborative Innovation Center of Chemistry for Energy Materials
- Department of Chemistry
- Fudan University
| | - Yue-Jian Lin
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials
- State Key Laboratory of Molecular Engineering of Polymers
- Collaborative Innovation Center of Chemistry for Energy Materials
- Department of Chemistry
- Fudan University
| | - Guo-Xin Jin
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials
- State Key Laboratory of Molecular Engineering of Polymers
- Collaborative Innovation Center of Chemistry for Energy Materials
- Department of Chemistry
- Fudan University
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70
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Zhang HN, Gao WX, Deng YX, Lin YJ, Jin GX. Stacking-interaction-induced host–guest chemistry and Borromean rings based on a polypyridyl ligand. Chem Commun (Camb) 2018; 54:1559-1562. [DOI: 10.1039/c7cc09448e] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Template-free molecular Borromean rings and open-ended molecular capsules were constructed via precisely controlled stacking interactions.
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Affiliation(s)
- Hai-Ning Zhang
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials
- State Key Laboratory of Molecular Engineering of Polymers
- Collaborative Innovation Center of Chemistry for Energy Materials
- Department of Chemistry
- Fudan University
| | - Wen-Xi Gao
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials
- State Key Laboratory of Molecular Engineering of Polymers
- Collaborative Innovation Center of Chemistry for Energy Materials
- Department of Chemistry
- Fudan University
| | - Yu-Xin Deng
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials
- State Key Laboratory of Molecular Engineering of Polymers
- Collaborative Innovation Center of Chemistry for Energy Materials
- Department of Chemistry
- Fudan University
| | - Yue-Jian Lin
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials
- State Key Laboratory of Molecular Engineering of Polymers
- Collaborative Innovation Center of Chemistry for Energy Materials
- Department of Chemistry
- Fudan University
| | - Guo-Xin Jin
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials
- State Key Laboratory of Molecular Engineering of Polymers
- Collaborative Innovation Center of Chemistry for Energy Materials
- Department of Chemistry
- Fudan University
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71
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Affiliation(s)
- Ye Lu
- State Key Laboratory of Molecular Engineering of Polymers, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry; Fudan University; Shanghai 200433 China
| | - Yuejian Lin
- State Key Laboratory of Molecular Engineering of Polymers, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry; Fudan University; Shanghai 200433 China
| | - Zhenhua Li
- State Key Laboratory of Molecular Engineering of Polymers, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry; Fudan University; Shanghai 200433 China
| | - Guoxin Jin
- State Key Laboratory of Molecular Engineering of Polymers, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry; Fudan University; Shanghai 200433 China
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72
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Pilgrim BS, Roberts DA, Lohr TG, Ronson TK, Nitschke JR. Signal transduction in a covalent post-assembly modification cascade. Nat Chem 2017. [DOI: 10.1038/nchem.2839] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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73
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Zhang YY, Gao WX, Lin YJ, Mi LW, Jin GX. Syntheses, Structures, and Solution Studies of Multicomponent Macrocycles and Cages Based on Versatile Ligands. Chemistry 2017. [PMID: 28639372 DOI: 10.1002/chem.201702244] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Different types of multinuclear half-sandwich rhodium macrocycles and cages were designed and synthesized by using two similar multifunctional hydroxamate ligands (pyrazine-2-hydroxamic acid (NaHL1 ) and 4,4'-bipyridine-2-hydroxamic acid (KHL2 )) featuring one monodentate site and two pairs of chelating sites. The RhIII -PdII heterometallic macrocycles were constructed by using the semi-open palladium(II) source [Pd(en)Cl2 ] with two free acceptor sites. However, only one kind of macrocycle was found when the shorter ligand L1 was used, while in for the larger ligand, various spectroscopic techniques demonstrated the coexistence of hexanuclear and octanuclear macrocycles in solution and the proportions of both components depended on concentration and temperature. The palladium salt Pd(NO3 )2 , as a source of "naked" Pd2+ , was introduced to assemble the cuboid-shaped cage composed of two types of metal ions and three types of organic ligands. In addition, two silver(I)-containing mixed-metal complexes bridged by pyrazine were obtained, in which two forms of decanuclear complex with C2v and C2h point symmetry cocrystallized-one is a polymeric structure and the other is a discrete cage. However, the third form, with D2 point symmetry, was found in the larger cage.
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Affiliation(s)
- Ying-Ying Zhang
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai, 200433, P. R. China.,Center for Advanced Materials Research, Zhongyuan University of Technology, Zhengzhou, 451191, P. R. China
| | - Wen-Xi Gao
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai, 200433, P. R. China
| | - Yue-Jian Lin
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai, 200433, P. R. China
| | - Li-Wei Mi
- Center for Advanced Materials Research, Zhongyuan University of Technology, Zhengzhou, 451191, P. R. China
| | - Guo-Xin Jin
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai, 200433, P. R. China
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74
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Flexible ligated ruthenium(II) self-assemblies sensitizes glioma tumor initiating cells in vitro. Oncotarget 2017; 8:60188-60200. [PMID: 28947963 PMCID: PMC5601131 DOI: 10.18632/oncotarget.19028] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Accepted: 06/18/2017] [Indexed: 11/25/2022] Open
Abstract
The tumorigenic potentials of residual cancer stem-like cells within tumors represent limitations of current cancer therapies. Here, the authors describe the effects of synthesized flexible, ligated, supramolecular self-assembled chair type tetranuclear ruthenium (II) metallacycles (2–5) on glioblastoma and glioma stem like cells. These self-assemblies were observed to be selectively toxic to glioma cells and CD133-positive glioma stem like cells population. Of the self-assembled compounds tested, metallacycle 4 more efficiently induced glioma stem like cells death within a brain cancer cell population and simultaneously inhibited the formation of free-floating gliospheres by reducing the sphere size. Detailed cell death studies revealed that treatment with metallacycle 4 reduced mitochondrial membrane potentials (an indicator of apoptosis) of glioma stem like cells. These results shows the elimination of cancer stem-like cells using an appropriate ligand binding adaptor offers a potential means of developing metal-based compounds for the treatment of chemo-resistant tumors.
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75
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Lu Y, Deng YX, Lin YJ, Han YF, Weng LH, Li ZH, Jin GX. Molecular Borromean Rings Based on Dihalogenated Ligands. Chem 2017. [DOI: 10.1016/j.chempr.2017.06.006] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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76
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77
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Jo JH, Singh N, Kim D, Cho SM, Mishra A, Kim H, Kang SC, Chi KW. Coordination-Driven Self-Assembly Using Ditopic Pyridyl-Pyrazolyl Donor and p-Cymene Ru(II) Acceptors: [2]Catenane Synthesis and Anticancer Activities. Inorg Chem 2017; 56:8430-8438. [PMID: 28665136 DOI: 10.1021/acs.inorgchem.7b01101] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Coordination-driven self-assembly of m-bis[3-(4-pyridyl)pyrazolyl]xylene (L) and [(p-cymene)2Ru2(OO∩OO)2(OTf)2] (A1) (OO∩OO = 6,11-dioxido-5,12-naphthacenedione) in methanol resulted in a mixture of [2]catenane 1 and macrocycle 2, and self-assembly in nitromethane resulted in pure macrocycle 2, whereas the coordination-driven self-assembly of L and similar acceptors [(p-cymene)2Ru2(OO∩OO)2(OTf)2] [OO∩OO = 5,8-dioxido-1,4-naphthoquinonnato (A2); 2,5-dioxido-1,4-benzoquinonato (A3); oxalato (A4)] resulted in the formations of monomeric macrocycles 3-5, respectively. All self-assembled macrocycles were obtained in excellent yields (>90%) as triflate salts and were fully characterized by multinuclear NMR, elemental analysis, and electrospray ionization mass spectrometry (ESI-MS). The structures of [2]catenane 1 and macrocycles 5 were confirmed by single-crystal X-ray diffraction analysis. The X-ray structure of 1 confirmed an edge-to-face interaction between the tetracene moiety in parallel-displaced π-π stacks (3.5 Å), and CH···π (2.5 Å) stabilizes the [2]catenane topology. Macrocycles 2-5 were assessed for anticancer activities using human cancer cell lines of different origins, and the macrocycle 3 was found to exhibit the best inhibitory effect and to do so in a dose-dependent manner. Further examination with the Tali apoptosis assay suggested the growth inhibitory effect of 3 involved the induction of the programmed cell death, and this suggestion was supported by observations of PARP and caspase 3 cleavage after treating cells with 3. In addition, exposure to 3 increased the expression of Bax and repressed the expression of Bcl-2, thus indicating the involvement of macrocycle 3 upstream of Bax and Bcl-2 in the apoptotic signaling pathway. Macrocycle 3 also tended to repress metastasis as evidenced by changes in the transcriptional expressions E- and N-cadherin (markers of metastasis). Furthermore, a stability assay demonstrated macrocycle 3 remained stable at high concentration.
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Affiliation(s)
- Jae-Ho Jo
- Department of Chemistry, University of Ulsan , Ulsan 44610, Republic of Korea
| | - Nem Singh
- Department of Chemistry, University of Ulsan , Ulsan 44610, Republic of Korea
| | - Donghyuk Kim
- College of Life Science, Kyung Hee University , Yongin 17104, Republic of Korea
| | - Se Min Cho
- College of Life Science, Kyung Hee University , Yongin 17104, Republic of Korea
| | - Anurag Mishra
- Department of Chemistry, University of Ulsan , Ulsan 44610, Republic of Korea
| | - Hyunuk Kim
- Energy Materials Laboratory, Korea Institute of Energy Research , Daejeon 28119, Republic of Korea
| | - Se Chan Kang
- College of Life Science, Kyung Hee University , Yongin 17104, Republic of Korea
| | - Ki-Whan Chi
- Department of Chemistry, University of Ulsan , Ulsan 44610, Republic of Korea
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78
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A green strategy for the synthesis of sulfone derivatives of p-methylaminophenol: Kinetic evaluation and antibacterial susceptibility. Sci Rep 2017; 7:4436. [PMID: 28667267 PMCID: PMC5493611 DOI: 10.1038/s41598-017-04581-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Accepted: 05/16/2017] [Indexed: 11/21/2022] Open
Abstract
This is one of the few examples in which the diverse products have been synthesized just by changing the applied potential. The synthesis of sulfonyl derivatives of p-methylaminophenol were carried out by reaction of the electrogenerated p-methylquinoneimine with sulfinic acids. Various types of mono (MSP), bis (BSP) and tris (TSP) sulfonyl p-methyl aminophenols were obtained by changing the electrode potential, in one pot under green conditions. The mono sulfonyl-p-(methylamino)phenol derivatives (MSP) were assessed for their in vitro antibacterial activity against the gram positive (Staphylococcus aureus) and gram negative (Escherichia coli) strains. It was found that the tested compounds were more active against Staphylococcus aureus than Escherichia coli. We also found that the antimicrobial activity of MSP derivatives to vary in the order MSP4 (R = CH3) > MSP1 (R = p-tolyl) ≈ MSP2 (R = phenyl) > MSP3 (R = p-ClC6H4). Moreover, the observed homogeneous rate constants (kobs) of the reaction of p-methyl quinoneimine with sulfinic acids were estimated in various pH values, based on the EC and ECEC mechanisms, by comparing the simulated cyclic voltammograms with the experimental ones.
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79
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Valero J, Lohmann F, Famulok M. Interlocked DNA topologies for nanotechnology. Curr Opin Biotechnol 2017; 48:159-167. [PMID: 28505598 DOI: 10.1016/j.copbio.2017.04.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2017] [Revised: 04/07/2017] [Accepted: 04/17/2017] [Indexed: 11/19/2022]
Abstract
Interlocked molecular architectures are well known in supramolecular chemistry and are widely used for various applications like sensors, molecular machines and logic gates. The use of DNA for constructing these interlocked structures has increased significantly within the current decade. Because of Watson-Crick base pairing rules, DNA is an excellent material for the self-assembly of well-defined interlocked nanoarchitectures. These DNA nanostructures exhibit sufficient stability, good solubility in aqueous media, biocompatibility, and can be easily combined with other biomolecules in bio-hybrid nano-assemblies. Therefore, the study of novel DNA-based interlocked systems is of interest for nanotechnology, synthetic biology, supramolecular chemistry, biotechnology, and for sensing purposes. Here we summarize recent developments and applications of interlocked supramolecular architectures made of DNA. Examples illustrating that these systems can be precisely controlled by switching on and off the molecular motion of its mechanically trapped components are discussed. Introducing different triggers into such systems creates molecular assemblies capable of performing logic gate operations and/or catalytic activity control. Interlocked DNA-based nanostructures thus represent promising frameworks for building increasingly complex and dynamic nanomachines with highly controllable functionality.
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Affiliation(s)
- Julián Valero
- Life and Medical Sciences (LIMES) Institute, Chemical Biology and Medicinal Chemistry Unit, c/o Kekulé Institut für Organische Chemie und Biochemie, Gerhard-Domagk-Strasse 1, 53121 Bonn, Germany; Center of Advanced European Studies and Research (CASEAR), Ludwig-Erhard-Allee 2, 53175 Bonn, Germany
| | - Finn Lohmann
- Life and Medical Sciences (LIMES) Institute, Chemical Biology and Medicinal Chemistry Unit, c/o Kekulé Institut für Organische Chemie und Biochemie, Gerhard-Domagk-Strasse 1, 53121 Bonn, Germany
| | - Michael Famulok
- Life and Medical Sciences (LIMES) Institute, Chemical Biology and Medicinal Chemistry Unit, c/o Kekulé Institut für Organische Chemie und Biochemie, Gerhard-Domagk-Strasse 1, 53121 Bonn, Germany; Center of Advanced European Studies and Research (CASEAR), Ludwig-Erhard-Allee 2, 53175 Bonn, Germany.
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80
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Zhu K, Baggi G, Vukotic VN, Loeb SJ. Reversible mechanical protection: building a 3D "suit" around a T-shaped benzimidazole axle. Chem Sci 2017; 8:3898-3904. [PMID: 28626559 PMCID: PMC5465563 DOI: 10.1039/c7sc00790f] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 03/14/2017] [Indexed: 12/13/2022] Open
Abstract
The T-shaped benzimidazolium/crown ether recognition motif was used to prepare suit[1]anes. These novel mechanically interlocked molecules (MIMs) were fully characterized by 1H and 13C NMR spectroscopy, single-crystal X-ray diffraction, UV-vis absorption and fluorescence spectroscopy. By conversion to a suit[1]ane, a simple benzimidazole was shown to be protected from deprotonation by strong base. Moreover, it was demonstrated that this unique three-dimensional encapsulation can be made reversible, thus introducing the concept of "reversible mechanical protection"; a protecting methodology that may have potential applications in synthetic organic chemistry and the design of molecular machinery.
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Affiliation(s)
- Kelong Zhu
- School of Chemistry , Sun Yat-Sen University , Guangzhou , 510275 , P. R. China .
| | - Giorgio Baggi
- Department of Chemistry and Biochemistry , University of Windsor , Windsor , Ontario N9B 3P4 , Canada .
| | - V Nicholas Vukotic
- Department of Chemistry and Biochemistry , University of Windsor , Windsor , Ontario N9B 3P4 , Canada .
| | - Stephen J Loeb
- Department of Chemistry and Biochemistry , University of Windsor , Windsor , Ontario N9B 3P4 , Canada .
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81
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Bhat IA, Jain R, Siddiqui MM, Saini DK, Mukherjee PS. Water-Soluble Pd 8L 4 Self-assembled Molecular Barrel as an Aqueous Carrier for Hydrophobic Curcumin. Inorg Chem 2017; 56:5352-5360. [PMID: 28394128 DOI: 10.1021/acs.inorgchem.7b00449] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A tetrafacial water-soluble molecular barrel (1) was synthesized by coordination driven self-assembly of a symmetrical tetrapyridyl donor (L) with a cis-blocked 90° acceptor [cis-(en)Pd(NO3)2] (en = ethane-1,2-diamine). The open barrel structure of (1) was confirmed by single crystal X-ray diffraction. The presence of a hydrophobic cavity with large windows makes it an ideal candidate for encapsulation and carrying hydrophobic drug like curcumin in an aqueous medium. The barrel (1) encapsulates curcumin inside its molecular cavity and protects highly photosensitive curcumin from photodegradation. The photostability of encapsulated curcumin is due to the absorption of a high proportion of the incident photons by the aromatic walls of 1 with a high absorption cross-sectional area, which helps the walls to shield the guest even against sunlight/UV radiations. As compared to free curcumin in water, we noticed a significant increase in solubility as well as cellular uptake of curcumin upon encapsulation inside the water-soluble molecular barrel (1) in aqueous medium. Fluorescence imaging confirmed that curcumin was delivered into HeLa cancer cells by the aqueous barrel (1) with the retention of its potential anticancer activity. While free curcumin is inactive toward cancer cells in aqueous medium at room temperature due to negligible solubility, the determined IC50 value of ∼14 μM for curcumin in aqueous medium in the presence of the barrel (1) reflects the efficiency of the barrel as a potential curcumin carrier in aqueous medium without any other additives. Thus, two major challenges of increasing the bioavailability and stability of curcumin in aqueous medium even in the presence of UV light have been addressed by using a new supramolecular water-soluble barrel (1) as a drug carrier.
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Affiliation(s)
- Imtiyaz Ahmad Bhat
- Department of Inorganic and Physical Chemistry, Indian Institute of Science , Bangalore 560012, India
| | - Ruchi Jain
- Department of Molecular Reproduction, Development and Genetics and Centre for Biosystems Science and Engineering, Indian Institute of Science , Bangalore 560012, India
| | - Mujahuddin M Siddiqui
- Department of Inorganic and Physical Chemistry, Indian Institute of Science , Bangalore 560012, India
| | - Deepak K Saini
- Department of Molecular Reproduction, Development and Genetics and Centre for Biosystems Science and Engineering, Indian Institute of Science , Bangalore 560012, India
| | - Partha Sarathi Mukherjee
- Department of Inorganic and Physical Chemistry, Indian Institute of Science , Bangalore 560012, India
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82
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Synthesizing topological structures containing RNA. Nat Commun 2017; 8:14936. [PMID: 28361879 PMCID: PMC5381007 DOI: 10.1038/ncomms14936] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Accepted: 02/15/2017] [Indexed: 12/27/2022] Open
Abstract
Though knotting and entanglement have been observed in DNA and proteins, their existence in RNA remains an enigma. Synthetic RNA topological structures are significant for understanding the physical and biological properties pertaining to RNA topology, and these properties in turn could facilitate identifying naturally occurring topologically nontrivial RNA molecules. Here we show that topological structures containing single-stranded RNA (ssRNA) free of strong base pairing interactions can be created either by configuring RNA-DNA hybrid four-way junctions or by template-directed synthesis with a single-stranded DNA (ssDNA) topological structure. By using a constructed ssRNA knot as a highly sensitive topological probe, we find that Escherichia coli DNA topoisomerase I has low RNA topoisomerase activity and that the R173A point mutation abolishes the unknotting activity for ssRNA, but not for ssDNA. Furthermore, we discover the topological inhibition of reverse transcription (RT) and obtain different RT-PCR patterns for an ssRNA knot and circle of the same sequence.
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83
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84
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Wang WZ, Gao C, Zhang Q, Ye XH, Qu DH. Supramolecular Helical Nanofibers Formed by Achiral Monomers and Their Reversible Sol-Gel Transition. Chem Asian J 2017; 12:410-414. [PMID: 28098435 DOI: 10.1002/asia.201601733] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 01/14/2017] [Indexed: 11/11/2022]
Abstract
Well-defined supramolecular helical nanofibers have been constructed by a rationally designed achiral monomer in aqueous solution based on the 1:2 host-guest combination between cucurbit[8]uril and a 4,4'-bipyridin-1-ium chloride (BPY+ ) salt derivative. The formed nanostructures could be adjusted by varying the concentration of monomer from helical nanofibers to a pH-responsive hydrogel.
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Affiliation(s)
- Wen-Zhi Wang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Meilong Road No. 130, Shanghai, 200237, China
| | - Chuan Gao
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Meilong Road No. 130, Shanghai, 200237, China
| | - Qi Zhang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Meilong Road No. 130, Shanghai, 200237, China
| | - Xu-Hao Ye
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Meilong Road No. 130, Shanghai, 200237, China
| | - Da-Hui Qu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Meilong Road No. 130, Shanghai, 200237, China
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85
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Zhang L, Lin L, Liu D, Lin YJ, Li ZH, Jin GX. Stacking Interactions Induced Selective Conformation of Discrete Aromatic Arrays and Borromean Rings. J Am Chem Soc 2017; 139:1653-1660. [DOI: 10.1021/jacs.6b11968] [Citation(s) in RCA: 93] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Long Zhang
- Shanghai Key Laboratory of
Molecular Catalysis and Innovative Materials, State Key Laboratory
of Molecular Engineering of Polymers, Collaborative Innovation Center
of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200433, P. R. China
| | - Lin Lin
- Shanghai Key Laboratory of
Molecular Catalysis and Innovative Materials, State Key Laboratory
of Molecular Engineering of Polymers, Collaborative Innovation Center
of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200433, P. R. China
| | - Dong Liu
- Shanghai Key Laboratory of
Molecular Catalysis and Innovative Materials, State Key Laboratory
of Molecular Engineering of Polymers, Collaborative Innovation Center
of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200433, P. R. China
| | - Yue-Jian Lin
- Shanghai Key Laboratory of
Molecular Catalysis and Innovative Materials, State Key Laboratory
of Molecular Engineering of Polymers, Collaborative Innovation Center
of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200433, P. R. China
| | - Zhen-Hua Li
- Shanghai Key Laboratory of
Molecular Catalysis and Innovative Materials, State Key Laboratory
of Molecular Engineering of Polymers, Collaborative Innovation Center
of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200433, P. R. China
| | - Guo-Xin Jin
- Shanghai Key Laboratory of
Molecular Catalysis and Innovative Materials, State Key Laboratory
of Molecular Engineering of Polymers, Collaborative Innovation Center
of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200433, P. R. China
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86
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Cui X, Zhao W, Chen K, Ni XL, Zhang YQ, Tao Z. Outer Surface Interactions of Cucurbit[6]uril That Trigger the Assembly of Supramolecular Three-Dimensional Polycatenanes. Chemistry 2017; 23:2759-2763. [DOI: 10.1002/chem.201605045] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Indexed: 11/07/2022]
Affiliation(s)
- Xiaowei Cui
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province; Guizhou University; Guiyang 550025 China
| | - Wenxuan Zhao
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province; Guizhou University; Guiyang 550025 China
| | - Kai Chen
- Department Jiangsu 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
| | - Xin-Long Ni
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province; Guizhou University; Guiyang 550025 China
| | - Yuan-Qian Zhang
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province; Guizhou University; Guiyang 550025 China
| | - Zhu Tao
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province; Guizhou University; Guiyang 550025 China
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87
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Singh N, Kim D, Kim DH, Kim EH, Kim H, Lah MS, Chi KW. Selective synthesis of iridium(iii)-derived molecular Borromean rings, [2]catenane and ring-in-ring macrocycles via coordination-driven self-assembly. Dalton Trans 2017; 46:571-577. [DOI: 10.1039/c6dt04512j] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Unprecedented iridium(iii) derived molecular Borromean rings, 2[catenane] and ring-in-ring metallacycles were synthesizedviacoordination driven self-assembly using an iridium(iii)-based acceptor and dipyridyl donors.
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Affiliation(s)
- Nem Singh
- Department of Chemistry
- University of Ulsan
- Ulsan 44610
- Republic of Korea
| | - Dongwook Kim
- Department of Chemistry
- Ulsan National Institute of Science & Technology
- Ulsan 44919
- Republic of Korea
| | - Dong Hwan Kim
- Department of Chemistry
- University of Ulsan
- Ulsan 44610
- Republic of Korea
| | - Eun-Hee Kim
- Protein Structure Group
- Korea Basic Science Institute
- Ochang
- Republic of Korea
| | - Hyunuk Kim
- Energy Materials Laboratory
- Korea Institute of Energy Research
- Daejeon 28119
- Republic of Korea
| | - Myoung Soo Lah
- Department of Chemistry
- Ulsan National Institute of Science & Technology
- Ulsan 44919
- Republic of Korea
| | - Ki-Whan Chi
- Department of Chemistry
- University of Ulsan
- Ulsan 44610
- Republic of Korea
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88
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Liu N, Huang SL, Liu X, Luo HK, Hor TSA. Self-assembled [2]catenane in trapezoidal metallacycles with [Cp*Ir]-corners. Chem Commun (Camb) 2017; 53:12802-12805. [DOI: 10.1039/c7cc08009c] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The metallacyclic assembly of [2]catenanes was investigated by optimising the cavity size of trapezoidal rings.
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Affiliation(s)
- Naifang Liu
- Institute of Materials Research and Engineering
- A*STAR (Agency for Science, Technology and Research)
- 2 Fusionopolis Way
- Innovis, #08-03
- Singapore 138634
| | - Sheng-Li Huang
- Institute of Materials Research and Engineering
- A*STAR (Agency for Science, Technology and Research)
- 2 Fusionopolis Way
- Innovis, #08-03
- Singapore 138634
| | - Xiaogang Liu
- Institute of Materials Research and Engineering
- A*STAR (Agency for Science, Technology and Research)
- 2 Fusionopolis Way
- Innovis, #08-03
- Singapore 138634
| | - He-Kuan Luo
- Institute of Materials Research and Engineering
- A*STAR (Agency for Science, Technology and Research)
- 2 Fusionopolis Way
- Innovis, #08-03
- Singapore 138634
| | - T. S. Andy Hor
- Institute of Materials Research and Engineering
- A*STAR (Agency for Science, Technology and Research)
- 2 Fusionopolis Way
- Innovis, #08-03
- Singapore 138634
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89
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Reta D, Moreira IDPR, Illas F. Calix[n]arene-based polyradicals: enhancing ferromagnetism by avoiding edge effects. Phys Chem Chem Phys 2017; 19:24264-24270. [DOI: 10.1039/c7cp04145d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The absence of edges in circular structures derived from 1,3-arylmethyl polyradical results in realistic molecules showing largely stabilized high-spin ground states.
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Affiliation(s)
- Daniel Reta
- Departament de Ciència de Materials i Química Física & Institut de Química Teòrica i Computacional (IQTCUB)
- Universitat de Barcelona
- 08028 Barcelona
- Spain
- School of Chemistry
| | - Ibério de P. R. Moreira
- Departament de Ciència de Materials i Química Física & Institut de Química Teòrica i Computacional (IQTCUB)
- Universitat de Barcelona
- 08028 Barcelona
- Spain
| | - Francesc Illas
- Departament de Ciència de Materials i Química Física & Institut de Química Teòrica i Computacional (IQTCUB)
- Universitat de Barcelona
- 08028 Barcelona
- Spain
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90
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Singh N, Jang S, Jo JH, Kim DH, Park DW, Kim I, Kim H, Kang SC, Chi KW. Coordination-Driven Self-Assembly and Anticancer Potency Studies of Ruthenium-Cobalt-Based Heterometallic Rectangles. Chemistry 2016; 22:16157-16164. [PMID: 27689935 DOI: 10.1002/chem.201603521] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Indexed: 12/30/2022]
Abstract
Three new cobalt-ruthenium heterometallic molecular rectangles, 1-3, were synthesized through the coordination-driven self-assembly of a new cobalt sandwich donor, (η5 -Cp)Co[C4 -trans-Ph2 (4-Py)2 ] (L; Cp: cyclopentyl; Py: pyridine), and one of three dinuclear precursors, [(p-cymene)2 Ru2 (OO∩OO)2 Cl2 ] [OO∩OO: oxalato (A1 ), 5,8-dioxido-1,4-naphthoquinone (A2 ), or 6,11-dioxido-5,12-naphthacenedione (A3 )]. All of the self-assembled architectures were isolated in very good yield (92-94 %) and were fully characterized by spectroscopic analysis; the molecular structures of 2 and 3 were determined by single-crystal X-ray diffraction analysis. The anticancer activities of bimetallic rectangles 1-3 were evaluated with a 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide (MTT) assay, an autophagy assay, and Western blotting. Rectangles 1-3 showed higher cytotoxicity than doxorubicin in AGS human gastric carcinoma cells. In addition, the autophagic activities and apoptotic cell death ratios were increased in AGS cells by treatment with 1-3; the rectangles induced autophagosome formation by promoting LC3-I to LC3-II conversion and apoptotic cell death by increasing caspase-3/7 activity. Our results suggest that rectangles 1-3 induce gastric cancer cell death by modulating autophagy and apoptosis and that they have potential use as agents for the treatment of human gastric cancer.
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Affiliation(s)
- Nem Singh
- Department of Chemistry, University of Ulsan, Ulsan, 44610, Republic of Korea
| | - Sunphil Jang
- Department of Oriental Biotechnology, College of Life Sciences, Kyung Hee University, Yongin, 17104, Republic of Korea
| | - Jae-Ho Jo
- Department of Chemistry, University of Ulsan, Ulsan, 44610, Republic of Korea
| | - Dong Hwan Kim
- Department of Chemistry, University of Ulsan, Ulsan, 44610, Republic of Korea
| | - Dae Won Park
- Department of Oriental Biotechnology, College of Life Sciences, Kyung Hee University, Yongin, 17104, Republic of Korea
| | - InHye Kim
- Department of Oriental Biotechnology, College of Life Sciences, Kyung Hee University, Yongin, 17104, Republic of Korea
| | - Hyunuk Kim
- Energy Materials Laboratory, Korea Institute of Energy Research, Daejeon, 34129, Republic of Korea.
| | - Se Chan Kang
- Department of Oriental Biotechnology, College of Life Sciences, Kyung Hee University, Yongin, 17104, Republic of Korea.
| | - Ki-Whan Chi
- Department of Chemistry, University of Ulsan, Ulsan, 44610, Republic of Korea.
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91
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Li L, Cong Y, He L, Wang Y, Wang J, Zhang FM, Bu W. Multiple stimuli-responsive supramolecular gels constructed from metal–organic cycles. Polym Chem 2016. [DOI: 10.1039/c6py01580h] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Two supramolecular networks are constructed from a crown ether based metal–organic cycle and dibenzylammonium based poly(ε-caprolactone)s through multiple host–guest interactions. One of the networks can form organogels at higher concentrations, which show multiple stimuli-responsive behaviors.
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Affiliation(s)
- Lijie Li
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou City
- China
| | - Yong Cong
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou City
- China
| | - Lipeng He
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou City
- China
| | - Yongyue Wang
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou City
- China
| | - Jun Wang
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou City
- China
| | - Fu-Ming Zhang
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou City
- China
| | - Weifeng Bu
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou City
- China
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