151
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Danon JJ, Krüger A, Leigh DA, Lemonnier JF, Stephens AJ, Vitorica-Yrezabal IJ, Woltering SL. Braiding a molecular knot with eight crossings. Science 2017; 355:159-162. [DOI: 10.1126/science.aal1619] [Citation(s) in RCA: 180] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Accepted: 12/13/2016] [Indexed: 01/16/2023]
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152
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Lewis JEM, Winn J, Goldup SM. Stepwise, Protecting Group Free Synthesis of [4]Rotaxanes. Molecules 2017; 22:E89. [PMID: 28075366 PMCID: PMC6155830 DOI: 10.3390/molecules22010089] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 12/22/2016] [Accepted: 12/25/2016] [Indexed: 11/16/2022] Open
Abstract
Despite significant advances in the last three decades towards high yielding syntheses of rotaxanes, the preparation of systems constructed from more than two components remains a challenge. Herein we build upon our previous report of an active template copper-catalyzed azide-alkyne cycloaddition (CuAAC) rotaxane synthesis with a diyne in which, following the formation of the first mechanical bond, the steric bulk of the macrocycle tempers the reactivity of the second alkyne unit. We have now extended this approach to the use of 1,3,5-triethynylbenzene in order to successively prepare [2]-, [3]- and [4]rotaxanes without the need for protecting group chemistry. Whilst the first two iterations proceeded in good yield, the steric shielding that affords this selectivity also significantly reduces the efficacy of the active template (AT)-CuAAC reaction of the third alkyne towards the preparation of [4]rotaxanes, resulting in severely diminished yields.
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Affiliation(s)
- James E M Lewis
- Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, UK.
| | - Joby Winn
- School of Biological and Chemical Sciences, Queen Mary University of London, Mile End Road, London E1 4NS, UK.
| | - Stephen M Goldup
- Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, UK.
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153
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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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154
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Shyshov O, Brachvogel R, Bachmann T, Srikantharajah R, Segets D, Hampel F, Puchta R, von Delius M. Adaptive Behavior of Dynamic Orthoester Cryptands. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201609855] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Oleksandr Shyshov
- Institute of Organic Chemistry and Advanced Materials University of Ulm Albert-Einstein-Allee 11 89081 Ulm Germany
| | - René‐Chris Brachvogel
- Institute of Organic Chemistry and Advanced Materials University of Ulm Albert-Einstein-Allee 11 89081 Ulm Germany
| | - Tobias Bachmann
- Department of Chemistry and Pharmacy, Institute of Organic Chemistry, and Computer Chemistry Center (CCC) Friedrich-Alexander Universität Erlangen-Nürnberg (FAU) Henkestrasse 42 91054 Erlangen Germany
| | - Rubitha Srikantharajah
- Institute of Particle Technology (LFG) and Interdisciplinary Center for Functional Particle Systems (FPS) Friedrich-Alexander Universität Erlangen-Nürnberg (FAU) Cauerstrasse 4 91058 Erlangen Germany
| | - Doris Segets
- Institute of Particle Technology (LFG) and Interdisciplinary Center for Functional Particle Systems (FPS) Friedrich-Alexander Universität Erlangen-Nürnberg (FAU) Cauerstrasse 4 91058 Erlangen Germany
| | - Frank Hampel
- Department of Chemistry and Pharmacy, Institute of Organic Chemistry, and Computer Chemistry Center (CCC) Friedrich-Alexander Universität Erlangen-Nürnberg (FAU) Henkestrasse 42 91054 Erlangen Germany
| | - Ralph Puchta
- Department of Chemistry and Pharmacy, Institute of Organic Chemistry, and Computer Chemistry Center (CCC) Friedrich-Alexander Universität Erlangen-Nürnberg (FAU) Henkestrasse 42 91054 Erlangen Germany
| | - Max von Delius
- Institute of Organic Chemistry and Advanced Materials University of Ulm Albert-Einstein-Allee 11 89081 Ulm Germany
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155
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Shyshov O, Brachvogel R, Bachmann T, Srikantharajah R, Segets D, Hampel F, Puchta R, von Delius M. Adaptive Behavior of Dynamic Orthoester Cryptands. Angew Chem Int Ed Engl 2016; 56:776-781. [DOI: 10.1002/anie.201609855] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2016] [Revised: 11/22/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Oleksandr Shyshov
- Institute of Organic Chemistry and Advanced Materials University of Ulm Albert-Einstein-Allee 11 89081 Ulm Germany
| | - René‐Chris Brachvogel
- Institute of Organic Chemistry and Advanced Materials University of Ulm Albert-Einstein-Allee 11 89081 Ulm Germany
| | - Tobias Bachmann
- Department of Chemistry and Pharmacy, Institute of Organic Chemistry, and Computer Chemistry Center (CCC) Friedrich-Alexander Universität Erlangen-Nürnberg (FAU) Henkestrasse 42 91054 Erlangen Germany
| | - Rubitha Srikantharajah
- Institute of Particle Technology (LFG) and Interdisciplinary Center for Functional Particle Systems (FPS) Friedrich-Alexander Universität Erlangen-Nürnberg (FAU) Cauerstrasse 4 91058 Erlangen Germany
| | - Doris Segets
- Institute of Particle Technology (LFG) and Interdisciplinary Center for Functional Particle Systems (FPS) Friedrich-Alexander Universität Erlangen-Nürnberg (FAU) Cauerstrasse 4 91058 Erlangen Germany
| | - Frank Hampel
- Department of Chemistry and Pharmacy, Institute of Organic Chemistry, and Computer Chemistry Center (CCC) Friedrich-Alexander Universität Erlangen-Nürnberg (FAU) Henkestrasse 42 91054 Erlangen Germany
| | - Ralph Puchta
- Department of Chemistry and Pharmacy, Institute of Organic Chemistry, and Computer Chemistry Center (CCC) Friedrich-Alexander Universität Erlangen-Nürnberg (FAU) Henkestrasse 42 91054 Erlangen Germany
| | - Max von Delius
- Institute of Organic Chemistry and Advanced Materials University of Ulm Albert-Einstein-Allee 11 89081 Ulm Germany
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156
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Sharma S, Thorat SH, Gonnade RG, Jasinski JP, Butcher R, Haridas V. Engineering Molecular Topology: A Pseudopeptidic Macrocyclic Figure-Eight Motif. European J Org Chem 2016. [DOI: 10.1002/ejoc.201601365] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Sakshi Sharma
- Department of Chemistry; Indian Institute of Technology Delhi (IITD); Hauz Khas 110016 New Delhi India
| | - Shridhar H. Thorat
- Center for Materials Characterization; CSIR-National Chemical Laboratory; 411008 Pune India
| | - Rajesh G. Gonnade
- Center for Materials Characterization; CSIR-National Chemical Laboratory; 411008 Pune India
| | - Jerry P Jasinski
- Department of Chemistry; Keene State College; 229 Main Street 03435 Keene New Hampshire USA
| | - Ray Butcher
- Department of Chemistry; Howard University; 525 College Street NW 20059 Washington DC USA
| | - V. Haridas
- Department of Chemistry; Indian Institute of Technology Delhi (IITD); Hauz Khas 110016 New Delhi India
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157
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Gil-Ramírez G, Hoekman S, Kitching MO, Leigh DA, Vitorica-Yrezabal IJ, Zhang G. Tying a Molecular Overhand Knot of Single Handedness and Asymmetric Catalysis with the Corresponding Pseudo-D 3-Symmetric Trefoil Knot. J Am Chem Soc 2016; 138:13159-13162. [PMID: 27667319 PMCID: PMC5152939 DOI: 10.1021/jacs.6b08421] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Indexed: 11/28/2022]
Abstract
We report the stereoselective synthesis of a left-handed trefoil knot from a tris(2,6-pyridinedicarboxamide) oligomer with six chiral centers using a lanthanide(III) ion template. The oligomer folds around the lanthanide ion to form an overhand knot complex of single handedness. Subsequent joining of the overhand knot end groups by ring-closing olefin metathesis affords a single enantiomer of the trefoil knot in 90% yield. The knot topology and handedness were confirmed by NMR spectroscopy, mass spectrometry, and X-ray crystallography. The pseudo-D3-symmetric knot was employed as an asymmetric catalyst in Mukaiyama aldol reactions, generating enantioselectivities of up to 83:17 er, which are significantly higher than those obtained with a comparable unknotted ligand complex.
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Affiliation(s)
| | | | | | - David A. Leigh
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
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158
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Baggi G, Loeb SJ. Rotationally Active Ligands: Dialing-Up the Co-conformations of a [2]Rotaxane for Metal Ion Binding. Angew Chem Int Ed Engl 2016; 55:12533-7. [DOI: 10.1002/anie.201607281] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Indexed: 12/16/2022]
Affiliation(s)
- Giorgio Baggi
- 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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159
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Baggi G, Loeb SJ. Rotationally Active Ligands: Dialing-Up the Co-conformations of a [2]Rotaxane for Metal Ion Binding. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201607281] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Giorgio Baggi
- 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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160
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Howlader P, Mukherjee PS. Face and edge directed self-assembly of Pd 12 tetrahedral nano-cages and their self-sorting. Chem Sci 2016; 7:5893-5899. [PMID: 30034731 PMCID: PMC6024303 DOI: 10.1039/c6sc02012g] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2016] [Accepted: 05/19/2016] [Indexed: 12/22/2022] Open
Abstract
Reactions of a cis-blocked Pd(ii) 90° acceptor [cis-(tmeda)Pd(NO3)2] (M) with 1,4-di(1H-tetrazol-5-yl)benzene (H2L1 ) and [1,3,5-tri(1H-tetrazol-5-yl)benzene] (H3L2 ) in 1 : 1 and 3 : 2 molar ratios respectively, yielded soft metallogels G1 and G2 [tmeda = N,N,N',N'-tetramethylethane-1,2-diamine]. Post-metalation of the gels G1 and G2 with M yielded highly water-soluble edge and face directed self-assembled Pd12 tetrahedral nano-cages T1 and T2, respectively. Such facile conversion of Pd(ii) gels to discrete tetrahedral metallocages is unprecedented. Moreover, distinct self-sorting of these two tetrahedral cages of similar sizes was observed in the self-assembly of M with a mixture of H2L1 and H3L2 in aqueous medium. The edge directed tetrahedral cage (T1) was successfully used to perform Michael reactions of a series of water insoluble nitro-olefins assisted by encapsulation into the cage in aqueous medium.
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Affiliation(s)
- Prodip Howlader
- Inorganic and Physical Chemistry Department , Indian Institute of Science , Bangalore-560012 , India . ; ; Tel: +91-80-22933352
| | - Partha Sarathi Mukherjee
- Inorganic and Physical Chemistry Department , Indian Institute of Science , Bangalore-560012 , India . ; ; Tel: +91-80-22933352
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161
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Galán A, Aragay G, Ballester P. A chiral "Siamese-Twin" calix[4]pyrrole tetramer. Chem Sci 2016; 7:5976-5982. [PMID: 30034738 PMCID: PMC6024643 DOI: 10.1039/c6sc01843b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Accepted: 05/26/2016] [Indexed: 11/21/2022] Open
Abstract
We describe our results in the attempted template syntheses of oligomacrocycle calix[4]pyrrole dimer 4, using Hay coupling reaction conditions, tetraalkynyl calix[4]pyrrole 5 as starting material and two bipyridyl N-oxides of different length as templates. We found that the short bis-N-oxide 3 was not an efficient template for the macrocyclization reaction producing an insoluble crude reaction mixture containing exclusively oligomerization and polycondensation products. On the other hand, when we used the long bis-N-oxide 6 as template we obtained a soluble crude reaction mixture in which we did not detect the expected calix[4]pyrrole dimer 4. Instead, we isolated, in low yield, an encapsulation complex of the bis-N-oxide 6 in a partially reacted calix[4]pyrrole dimer. The major isolated species was an unprecedented calix[4]pyrrole tetramer encapsulating two molecules of 6. The complex adopted a chiral helical-like conformation in the solid state resembling the previously described so-called "Siamese-Twin porphyrins".
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Affiliation(s)
- Albano Galán
- Institute of Chemical Research of Catalonia (ICIQ) , The Barcelona Institute of Science and Technology , Avgda. Països Catalans 16 , 43007 , Tarragona , Spain .
| | - Gemma Aragay
- Institute of Chemical Research of Catalonia (ICIQ) , The Barcelona Institute of Science and Technology , Avgda. Països Catalans 16 , 43007 , Tarragona , Spain .
| | - Pablo Ballester
- Institute of Chemical Research of Catalonia (ICIQ) , The Barcelona Institute of Science and Technology , Avgda. Països Catalans 16 , 43007 , Tarragona , Spain .
- Institution for Research and Advanced Studies (ICREA) , Passeig Lluís Companys, 23 , 08018 Barcelona , Spain
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162
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Wang X, Wang Y, Yang H, Fang H, Chen R, Sun Y, Zheng N, Tan K, Lu X, Tian Z, Cao X. Assembled molecular face-rotating polyhedra to transfer chirality from two to three dimensions. Nat Commun 2016; 7:12469. [PMID: 27555330 PMCID: PMC4999497 DOI: 10.1038/ncomms12469] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Accepted: 07/06/2016] [Indexed: 12/19/2022] Open
Abstract
In nature, protein subunits on the capsids of many icosahedral viruses form rotational patterns, and mathematicians also incorporate asymmetric patterns into faces of polyhedra. Chemists have constructed molecular polyhedra with vacant or highly symmetric faces, but very little is known about constructing polyhedra with asymmetric faces. Here we report a strategy to embellish a C3h truxene unit with rotational patterns into the faces of an octahedron, forming chiral octahedra that exhibit the largest molar ellipticity ever reported, to the best of our knowledge. The directionalities of the facial rotations can be controlled by vertices to achieve identical rotational directionality on each face, resembling the homo-directionality of virus capsids. Investigations of the kinetics and mechanism reveal that non-covalent interaction among the faces is essential to the facial homo-directionality. Protein subunits on the capsids of icosahedral viruses can form patterns with rotational symmetry, which are difficult to recreate in the laboratory. Here the authors report a strategy to construct 3D chiral polyhedra with rotational faces from 2D chiral truxene-based units through dynamic covalent chemistry.
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Affiliation(s)
- Xinchang Wang
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Yu Wang
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.,Collaborative Innovation Centre of Chemistry for Energy Materials, Xiamen University, Xiamen 361005, China
| | - Huayan Yang
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.,Collaborative Innovation Centre of Chemistry for Energy Materials, Xiamen University, Xiamen 361005, China
| | - Hongxun Fang
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Ruixue Chen
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.,Collaborative Innovation Centre of Chemistry for Energy Materials, Xiamen University, Xiamen 361005, China
| | - Yibin Sun
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.,Collaborative Innovation Centre of Chemistry for Energy Materials, Xiamen University, Xiamen 361005, China
| | - Nanfeng Zheng
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.,Collaborative Innovation Centre of Chemistry for Energy Materials, Xiamen University, Xiamen 361005, China
| | - Kai Tan
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Xin Lu
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.,Collaborative Innovation Centre of Chemistry for Energy Materials, Xiamen University, Xiamen 361005, China
| | - Zhongqun Tian
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.,Collaborative Innovation Centre of Chemistry for Energy Materials, Xiamen University, Xiamen 361005, China
| | - Xiaoyu Cao
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.,Collaborative Innovation Centre of Chemistry for Energy Materials, Xiamen University, Xiamen 361005, China
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163
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Jiang B, Zhang J, Zheng W, Chen LJ, Yin GQ, Wang YX, Sun B, Li X, Yang HB. Construction of Alkynylplatinum(II) Bzimpy-Functionalized Metallacycles and Their Hierarchical Self-Assembly Behavior in Solution Promoted by Pt⋅⋅⋅Pt and π-π Interactions. Chemistry 2016; 22:14664-71. [DOI: 10.1002/chem.201601682] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Indexed: 12/24/2022]
Affiliation(s)
- Bo Jiang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; 3663 N. Zhongshan Road Shanghai 200062 P.R. China
| | - Jing Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; 3663 N. Zhongshan Road Shanghai 200062 P.R. China
| | - Wei Zheng
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; 3663 N. Zhongshan Road Shanghai 200062 P.R. China
| | - Li-Jun Chen
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; 3663 N. Zhongshan Road Shanghai 200062 P.R. China
| | - Guang-Qiang Yin
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; 3663 N. Zhongshan Road Shanghai 200062 P.R. China
| | - Yu-Xuan Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; 3663 N. Zhongshan Road Shanghai 200062 P.R. China
| | - Bin Sun
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; 3663 N. Zhongshan Road Shanghai 200062 P.R. China
| | - Xiaopeng Li
- Department of Chemistry and Biochemistry; Texas State University; San Marcos TX 78666 USA
| | - Hai-Bo Yang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; 3663 N. Zhongshan Road Shanghai 200062 P.R. China
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164
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Liu H, Hu WJ, Liu YA, Li JS, Jiang B, Wen K. Tetranitro-oxacalix[4]crown-Based Host–Guest Recognition Motif and a Related [2]Rotaxane-Based Molecular Switch. J Org Chem 2016; 81:6457-62. [DOI: 10.1021/acs.joc.6b01082] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hua Liu
- Shanghai
Advanced Research Institute, Chinese Academy of Science, Shanghai 201210, China
| | - Wen-Jing Hu
- Shanghai
Advanced Research Institute, Chinese Academy of Science, Shanghai 201210, China
| | - Yahu A. Liu
- Medicinal
Chemistry, ChemBridge Research Laboratories, San Diego, California 92127, United States
| | - Jiu-Sheng Li
- Shanghai
Advanced Research Institute, Chinese Academy of Science, Shanghai 201210, China
| | - Biao Jiang
- Shanghai
Advanced Research Institute, Chinese Academy of Science, Shanghai 201210, China
| | - Ke Wen
- Shanghai
Advanced Research Institute, Chinese Academy of Science, Shanghai 201210, China
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165
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Creating complex molecular topologies by configuring DNA four-way junctions. Nat Chem 2016; 8:907-14. [PMID: 27657865 DOI: 10.1038/nchem.2564] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Accepted: 05/26/2016] [Indexed: 12/27/2022]
Abstract
The realization of complex topologies at the molecular level represents a grand challenge in chemistry. This necessitates the manipulation of molecular interactions with high precision. Here we show that single-stranded DNA (ssDNA) knots and links can be created by utilizing the inherent topological properties that pertain to the DNA four-way junction, at which the two helical strands form a node and can be configured conveniently and connected for complex topological construction. Using this strategy, we produced series of ssDNA topoisomers with the same sequences. By finely designing the curvature and torsion, double-stranded DNA knots were accessed by hybridizing and ligating the complementary strands with the knotted ssDNA templates. Furthermore, we demonstrate the use of a constructed ssDNA knot both to probe the topological conversion catalysed by DNA topoisomerase and to study the DNA replication under topological constraint.
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166
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Yu G, Zhou J, Shen J, Tang G, Huang F. Cationic pillar[6]arene/ATP host-guest recognition: selectivity, inhibition of ATP hydrolysis, and application in multidrug resistance treatment. Chem Sci 2016; 7:4073-4078. [PMID: 30155051 PMCID: PMC6013913 DOI: 10.1039/c6sc00531d] [Citation(s) in RCA: 121] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Accepted: 03/02/2016] [Indexed: 12/23/2022] Open
Abstract
Due to the differences in the cavity size of the hosts and the charge and length of the guests, a cationic water-soluble pillar[6]arene (WP6) selectively complexes with ATP to form a stable 1 : 1 inclusion complex WP6⊃ATP. This host-guest complexation was utilized to efficiently inhibit the hydrolysis of ATP, arising from the existence of the hydrophobic cavity of WP6. A folic acid functionalized diblock copolymer (FA-PEG-b-PAA) was employed to PEGylate WP6 to endow the polyion complex (PIC) micelles with specific targeting ability, preferentially delivering WP6 to folate receptor over-expressing KB cell. This host-guest complexation was further used to block the efflux pump to transport anticancer drugs out of cells by cutting off the energy source, which enhanced the efficacy of the cancer chemotherapy of DOX·HCl towards drug resistant MCF-7/ADR cell. This supramolecular method provides an extremely distinct strategy to potentially overcome multidrug resistance (MDR).
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Affiliation(s)
- Guocan Yu
- State Key Laboratory of Chemical Engineering , Center for Chemistry of High-Performance & Novel Materials , Department of Chemistry , Zhejiang University , Hangzhou 310027 , P. R. China . ; ; Tel: +86-571-8795-3189
| | - Jiong Zhou
- State Key Laboratory of Chemical Engineering , Center for Chemistry of High-Performance & Novel Materials , Department of Chemistry , Zhejiang University , Hangzhou 310027 , P. R. China . ; ; Tel: +86-571-8795-3189
| | - Jie Shen
- Department of Chemistry , Institute of Chemical Biology and Pharmaceutical Chemistry , Zhejiang University , Hangzhou 310027 , P. R. China
| | - Guping Tang
- Department of Chemistry , Institute of Chemical Biology and Pharmaceutical Chemistry , Zhejiang University , Hangzhou 310027 , P. R. China
| | - Feihe Huang
- State Key Laboratory of Chemical Engineering , Center for Chemistry of High-Performance & Novel Materials , Department of Chemistry , Zhejiang University , Hangzhou 310027 , P. R. China . ; ; Tel: +86-571-8795-3189
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167
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Marcos V, Stephens AJ, Jaramillo-Garcia J, Nussbaumer AL, Woltering SL, Valero A, Lemonnier JF, Vitorica-Yrezabal IJ, Leigh DA. Allosteric initiation and regulation of catalysis with a molecular knot. Science 2016; 352:1555-9. [DOI: 10.1126/science.aaf3673] [Citation(s) in RCA: 167] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Accepted: 05/17/2016] [Indexed: 12/24/2022]
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168
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Frank M, Ahrens J, Bejenke I, Krick M, Schwarzer D, Clever GH. Light-Induced Charge Separation in Densely Packed Donor–Acceptor Coordination Cages. J Am Chem Soc 2016; 138:8279-87. [DOI: 10.1021/jacs.6b04609] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Marina Frank
- Institute
for Inorganic Chemistry, Georg-August University Göttingen, Tammannstraße
4, 37077 Göttingen, Germany
| | - Jennifer Ahrens
- Max-Planck-Institute for Biophysical Chemistry, Am Fassberg 11, 37077 Göttingen, Germany
| | - Isabel Bejenke
- Institute
for Inorganic Chemistry, Georg-August University Göttingen, Tammannstraße
4, 37077 Göttingen, Germany
| | - Marcel Krick
- Institute
for Inorganic Chemistry, Georg-August University Göttingen, Tammannstraße
4, 37077 Göttingen, Germany
| | - Dirk Schwarzer
- Max-Planck-Institute for Biophysical Chemistry, Am Fassberg 11, 37077 Göttingen, Germany
| | - Guido H. Clever
- Institute
for Inorganic Chemistry, Georg-August University Göttingen, Tammannstraße
4, 37077 Göttingen, Germany
- Faculty
of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn-Straße
6, 44227 Dortmund, Germany
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169
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Bilbeisi RA, Prakasam T, Lusi M, El Khoury R, Platas-Iglesias C, Charbonnière LJ, Olsen JC, Elhabiri M, Trabolsi A. [C-H···anion] interactions mediate the templation and anion binding properties of topologically non-trivial metal-organic structures in aqueous solutions. Chem Sci 2016; 7:2524-2531. [PMID: 28660022 PMCID: PMC5477011 DOI: 10.1039/c5sc04246a] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2015] [Accepted: 02/09/2016] [Indexed: 02/03/2023] Open
Abstract
Two synthetic approaches-temperature variation and anion templation-allowed for the selective formation of a [2]catenane ([2]C4+ ) or a trefoil knot (TK6+ ), or for the enhanced formation of a Solomon link (SL8+ ), all from a simple set of starting materials (Zn(ii) acetate, diformylpyridine (DFP) and a diamino-2,2'-bipyridine (DAB)) in mixed aqueous solutions. The catenane formed exclusively at 90 °C in a 1 : 1 mixed solvent of D2O and MeOD. In the presence of bromide ion as template, TK6+ formed exclusively at 50 °C in the same solvent. In the solid state, TK6+ hosts two bromide ions in its central cavity by forming six Csp2 -H hydrogen bonds. In D2O, TK6+ , which was originally prepared as a trifluoroacetate (TFA) salt, was found to exchange two TFA counterions for two monovalent anions of different sizes and shapes, which lodged within the knot's central cavity. In contrast to bromide, the larger triflate anion (CF3SO3-) promoted the formation of SL8+ , which was characterized by 1H NMR spectroscopy and mass spectrometry. Two dimensional heteronuclear 19F-1H-HOSEY NMR experiments detected CH···F interactions inside the cavity of SL8+ . Thus, the product distribution of this dynamic link forming system is sensitive to temperature and the size and shape of the anion template, and one of the products, TK6+ , is capable of binding a variety of monovalent anions in D2O with high affinity (with log β2 values of 4 to 6 being typical).
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Affiliation(s)
- Rana A Bilbeisi
- New York University Abu Dhabi (NYUAD) , Experimental Research Building (C1), Saadiyat Island , Abu Dhabi , UAE .
| | - Thirumurugan Prakasam
- New York University Abu Dhabi (NYUAD) , Experimental Research Building (C1), Saadiyat Island , Abu Dhabi , UAE .
| | - Matteo Lusi
- New York University Abu Dhabi (NYUAD) , Experimental Research Building (C1), Saadiyat Island , Abu Dhabi , UAE .
| | - Roberto El Khoury
- New York University Abu Dhabi (NYUAD) , Experimental Research Building (C1), Saadiyat Island , Abu Dhabi , UAE .
| | - Carlos Platas-Iglesias
- Centro de Investigaciones Científicas Avanzadas (CICA) and Departamento de Química Fundamental , Universidade de Coruña , Campus da Zapateira, Rúa da Fraga 10 , 15008 A Coruña , Spain
| | - Loïc J Charbonnière
- Laboratoire d'Ingénierie Moléculaire Appliquée à l'Analyse , IPHC , UMR 7178 CNRS/UdS , ECPM , 25 rue Becquerel , 67087 Strasbourg , France
| | - John-Carl Olsen
- School of Sciences , Indiana University Kokomo , Kokomo , IN 46904 , USA
| | - Mourad Elhabiri
- Laboratoire de Chimie Bioorganique et Médicinale , UMR 7509 CNRS/UdS , ECPM , 25 rue Becquerel , 67087 Strasbourg , France .
| | - Ali Trabolsi
- New York University Abu Dhabi (NYUAD) , Experimental Research Building (C1), Saadiyat Island , Abu Dhabi , UAE .
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170
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Vidonne A, Kosikova T, Philp D. Exploiting recognition-mediated assembly and reactivity in [2]rotaxane formation. Chem Sci 2016; 7:2592-2603. [PMID: 28660031 PMCID: PMC5477148 DOI: 10.1039/c5sc04805b] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Accepted: 01/15/2016] [Indexed: 01/26/2023] Open
Abstract
A small molecular reaction network exploits recognition-mediated reactive processes in order to drive the assembly and formation of both a self-replicating linear template (thread) and a [2]rotaxane, in which the linear template is encircled by a diamide macrocycle. Complementary recognition sites, placed at strategic positions on the reactive building blocks, drive these assembly and replication processes. Template-instructed experiments show that the thread is capable of efficient self-replication and that no cross-catalytic relationships exist between the thread and the [2]rotaxane. The rate of [2]rotaxane formation is insensitive to the addition of a preformed template, however, [2]rotaxane formation does show enhanced diastereoselectivity, most likely originating from its recognition-mediated formation through a ternary reactive complex.
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Affiliation(s)
- Annick Vidonne
- School of Chemistry and EaStCHEM , University of St Andrews , North Haugh St Andrews , Fife KY16 9ST , UK . ; ; Tel: +44 (0)1334 467264
| | - Tamara Kosikova
- School of Chemistry and EaStCHEM , University of St Andrews , North Haugh St Andrews , Fife KY16 9ST , UK . ; ; Tel: +44 (0)1334 467264
| | - Douglas Philp
- School of Chemistry and EaStCHEM , University of St Andrews , North Haugh St Andrews , Fife KY16 9ST , UK . ; ; Tel: +44 (0)1334 467264
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171
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Zhang Y, Legrand YM, van der Lee A, Barboiu M. Ligand- and Metal-Driven Selection of Flexible Adaptive Dynamic Host Receptors. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600126] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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172
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Wang Q, Yu C, Zhang C, Long H, Azarnoush S, Jin Y, Zhang W. Dynamic covalent synthesis of aryleneethynylene cages through alkyne metathesis: dimer, tetramer, or interlocked complex? Chem Sci 2016; 7:3370-3376. [PMID: 29997831 PMCID: PMC6007092 DOI: 10.1039/c5sc04977f] [Citation(s) in RCA: 84] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2015] [Accepted: 02/12/2016] [Indexed: 11/21/2022] Open
Abstract
A modular dynamic covalent approach towards rigid aryleneethynylene covalent organic polyhedrons (COPs) and the mechanistic features were explored.
A dynamic covalent approach towards rigid aryleneethynylene covalent organic polyhedrons (COPs) was explored. Our study on the relationship of the COP structures and the geometry of their building blocks reveals that the topology of aryleneethynylene COPs strongly depends on the size of the building blocks. A tetramer (D2h symmetric), dimer, or interlocked complex can be formed from monomers with the same face-to-edge angle but in different sizes. As alkyne metathesis is a self-exchange reaction and non-directional, the cyclooligomerization of multi-alkyne monomers involves both intramolecular cyclization and intermolecular metathesis reaction, resulting in complicated thermodynamic process disturbed by kinetic competition. Although a tetrahedron-shaped tetramer (Td symmetric) has comparable thermodynamic stability to a D2h symmetric tetramer, its formation is kinetically disfavored and was not observed experimentally. Aryleneethynylene COPs consist of purely unsaturated carbon backbones and exhibit large internal cavities, which would have interesting applications in host–guest chemistry and development of porous materials.
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Affiliation(s)
- Qi Wang
- Department of Chemistry and Biochemistry , University of Colorado , Boulder , Colorado 80309 , USA . ;
| | - Chao Yu
- Department of Chemistry and Biochemistry , University of Colorado , Boulder , Colorado 80309 , USA . ;
| | - Chenxi Zhang
- Department of Chemistry and Biochemistry , University of Colorado , Boulder , Colorado 80309 , USA . ;
| | - Hai Long
- National Renewable Energy Laboratory , Golden , Colorado 80401 , USA
| | - Setareh Azarnoush
- Department of Chemistry and Biochemistry , University of Colorado , Boulder , Colorado 80309 , USA . ;
| | - Yinghua Jin
- Department of Chemistry and Biochemistry , University of Colorado , Boulder , Colorado 80309 , USA . ;
| | - Wei Zhang
- Department of Chemistry and Biochemistry , University of Colorado , Boulder , Colorado 80309 , USA . ;
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173
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Fu X, Zhang Q, Rao SJ, Qu DH, Tian H. One-pot synthesis of a [c2]daisy-chain-containing hetero[4]rotaxane via a self-sorting strategy. Chem Sci 2016; 7:1696-1701. [PMID: 28808537 PMCID: PMC5535066 DOI: 10.1039/c5sc04844c] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Accepted: 01/12/2016] [Indexed: 12/15/2022] Open
Abstract
The construction and efficient synthesis of hetero[n]rotaxanes with high structural complexity are always attractive challenges. Herein, we demonstrate a facile one-pot preparation of a hetero[4]rotaxane, by employing a self-sorting strategy, which contains an interpenetrated dibenzo-24-crown-8 (DB24C8) based [c2]daisy chain structure and is ended with a benzo-21-crown-7 (B21C7) based rotaxane at each side. The key to the design involved encoding the selective threading using a steric hindrance-related "language", where highly selective self-assemblies occurred in a three-component self-sorting process, which included the threading of a benzylalkylammonium into a B21C7 and interpenetrated dimerized formation of a DB24C8 based [c2]daisy chain simultaneously; the precise pre-assembled system resulted in the efficient synthesis of hetero[4]rotaxane with a high-level of structural complexity under the "CuAAC" reaction.
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Affiliation(s)
- Xin Fu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals , East China University of Science and Technology , 130 Meilong Road , Shanghai , 200237 , China .
| | - Qi Zhang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals , East China University of Science and Technology , 130 Meilong Road , Shanghai , 200237 , China .
| | - Si-Jia Rao
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals , East China University of Science and Technology , 130 Meilong Road , Shanghai , 200237 , China .
| | - Da-Hui Qu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals , East China University of Science and Technology , 130 Meilong Road , Shanghai , 200237 , China .
| | - He Tian
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals , East China University of Science and Technology , 130 Meilong Road , Shanghai , 200237 , China .
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174
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Hua B, Shao L, Yu G, Huang F. Fluorescence indicator displacement detection based on pillar[5]arene-assisted dye deprotonation. Chem Commun (Camb) 2016; 52:10016-9. [DOI: 10.1039/c6cc04919b] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A fluorescence switch based on a pH-sensitive dye and a cationic pillar[5]arene was employed in fluorescence indicator displacement detection of phenolic contaminants.
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Affiliation(s)
- Bin Hua
- State Key Laboratory of Chemical Engineering
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- P. R. China
| | - Li Shao
- State Key Laboratory of Chemical Engineering
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- P. R. China
| | - Guocan Yu
- State Key Laboratory of Chemical Engineering
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- P. R. China
| | - Feihe Huang
- State Key Laboratory of Chemical Engineering
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- P. R. China
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175
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Wang W, Wang YX, Yang HB. Supramolecular transformations within discrete coordination-driven supramolecular architectures. Chem Soc Rev 2016; 45:2656-93. [DOI: 10.1039/c5cs00301f] [Citation(s) in RCA: 432] [Impact Index Per Article: 54.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
In this review, a comprehensive summary of supramolecular transformations within discrete coordination-driven supramolecular architectures, including helices, metallacycles, metallacages, etc., is presented.
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Affiliation(s)
- Wei Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- Department of Chemistry
- East China Normal University
- Shanghai 200062
- P. R. China
| | - Yu-Xuan Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- Department of Chemistry
- East China Normal University
- Shanghai 200062
- P. R. China
| | - Hai-Bo Yang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- Department of Chemistry
- East China Normal University
- Shanghai 200062
- P. R. China
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176
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Horner KE, Miller MA, Steed JW, Sutcliffe PM. Knot theory in modern chemistry. Chem Soc Rev 2016; 45:6432-6448. [DOI: 10.1039/c6cs00448b] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
This tutorial review provides an introduction to the mathematics of knots and topological concepts in the context of the chemical sciences.
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Affiliation(s)
- Kate E. Horner
- SPOCK Group
- Department of Mathematical Sciences
- Durham University
- Durham
- UK
| | | | | | - Paul M. Sutcliffe
- SPOCK Group
- Department of Mathematical Sciences
- Durham University
- Durham
- UK
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177
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Hu WB, Hu WJ, Liu YA, Li JS, Jiang B, Wen K. Multicavity macrocyclic hosts. Chem Commun (Camb) 2016; 52:12130-12142. [DOI: 10.1039/c6cc03651a] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Multicavity macrocyclic hosts are host molecules comprising more than one macrocyclic guest binding components connected through multipoint linkages.
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Affiliation(s)
- Wei-Bo Hu
- Shanghai Advanced Research Institute
- Chinese Academy of Science
- Shanghai 201210
- China
- University of Chinese Academy of Sciences
| | - Wen-Jing Hu
- Shanghai Advanced Research Institute
- Chinese Academy of Science
- Shanghai 201210
- China
| | - Yahu A. Liu
- Genomics Institute of the Novartis Research Foundation
- San Diego
- USA
| | - Jiu-Sheng Li
- Shanghai Advanced Research Institute
- Chinese Academy of Science
- Shanghai 201210
- China
| | - Biao Jiang
- Shanghai Advanced Research Institute
- Chinese Academy of Science
- Shanghai 201210
- China
| | - Ke Wen
- Shanghai Advanced Research Institute
- Chinese Academy of Science
- Shanghai 201210
- China
- School of Physical Science and Technology
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178
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Song YH, Singh N, Jung J, Kim H, Kim EH, Cheong HK, Kim Y, Chi KW. Template-Free Synthesis of a Molecular Solomon Link by Two-Component Self-Assembly. Angew Chem Int Ed Engl 2015; 55:2007-11. [DOI: 10.1002/anie.201508257] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Revised: 11/19/2015] [Indexed: 01/07/2023]
Affiliation(s)
- Young Ho Song
- Department of Chemistry; University of Ulsan; Ulsan 680-749 Republic of Korea
| | - Nem Singh
- Department of Chemistry; University of Ulsan; Ulsan 680-749 Republic of Korea
| | - Jaehoon Jung
- Department of Chemistry; University of Ulsan; Ulsan 680-749 Republic of Korea
| | - Hyunuk Kim
- Energy Materials Laboratory; Korea Institute of Energy Research; Daejeon 305-343 Republic of Korea
| | - Eun-Hee Kim
- Protein Structure Group; Korea Basic Science Institute; 162 Yeongudanji-Ro, Ochang Chungbuk 28119 Republic of Korea
| | - Hae-Kap Cheong
- Protein Structure Group; Korea Basic Science Institute; 162 Yeongudanji-Ro, Ochang Chungbuk 28119 Republic of Korea
| | - Yousoo Kim
- Surface and Interface Science Laboratory; RIKEN; Wako, Saitama 351-0198 Japan
| | - Ki-Whan Chi
- Department of Chemistry; University of Ulsan; Ulsan 680-749 Republic of Korea
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179
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Song YH, Singh N, Jung J, Kim H, Kim EH, Cheong HK, Kim Y, Chi KW. Template-Free Synthesis of a Molecular Solomon Link by Two-Component Self-Assembly. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201508257] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Young Ho Song
- Department of Chemistry; University of Ulsan; Ulsan 680-749 Republic of Korea
| | - Nem Singh
- Department of Chemistry; University of Ulsan; Ulsan 680-749 Republic of Korea
| | - Jaehoon Jung
- Department of Chemistry; University of Ulsan; Ulsan 680-749 Republic of Korea
| | - Hyunuk Kim
- Energy Materials Laboratory; Korea Institute of Energy Research; Daejeon 305-343 Republic of Korea
| | - Eun-Hee Kim
- Protein Structure Group; Korea Basic Science Institute; 162 Yeongudanji-Ro, Ochang Chungbuk 28119 Republic of Korea
| | - Hae-Kap Cheong
- Protein Structure Group; Korea Basic Science Institute; 162 Yeongudanji-Ro, Ochang Chungbuk 28119 Republic of Korea
| | - Yousoo Kim
- Surface and Interface Science Laboratory; RIKEN; Wako, Saitama 351-0198 Japan
| | - Ki-Whan Chi
- Department of Chemistry; University of Ulsan; Ulsan 680-749 Republic of Korea
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180
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Zhou Y, Li L, Ye H, Zhang L, You L. Quantitative Reactivity Scales for Dynamic Covalent and Systems Chemistry. J Am Chem Soc 2015; 138:381-9. [DOI: 10.1021/jacs.5b11361] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Yuntao Zhou
- State
Key Laboratory of Structural Chemistry, Fujian Institute of Research
on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, PR China
| | - Lijie Li
- State
Key Laboratory of Structural Chemistry, Fujian Institute of Research
on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, PR China
- University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Hebo Ye
- State
Key Laboratory of Structural Chemistry, Fujian Institute of Research
on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, PR China
| | - Ling Zhang
- State
Key Laboratory of Structural Chemistry, Fujian Institute of Research
on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, PR China
| | - Lei You
- State
Key Laboratory of Structural Chemistry, Fujian Institute of Research
on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, PR China
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181
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Wang CX, Gao Y, Deng YX, Lin YJ, Han YF, Jin GX. Photochemical Modification of Carbene-Based Metallacycles: A Facile Route to Polycarbene Complexes and Their Derivatives. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00977] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chun-Xiang Wang
- Collaborative Innovation
Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, 220
Handan Road, 200433 Shanghai, People’s Republic of China
| | - Yang Gao
- Collaborative Innovation
Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, 220
Handan Road, 200433 Shanghai, People’s Republic of China
| | - Yu-Xin Deng
- Collaborative Innovation
Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, 220
Handan Road, 200433 Shanghai, People’s Republic of China
| | - Yue-Jian Lin
- Collaborative Innovation
Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, 220
Handan Road, 200433 Shanghai, People’s Republic of China
| | - Ying-Feng Han
- Collaborative Innovation
Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, 220
Handan Road, 200433 Shanghai, People’s Republic of China
| | - Guo-Xin Jin
- Collaborative Innovation
Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, 220
Handan Road, 200433 Shanghai, People’s Republic of China
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182
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White NG, MacLachlan MJ. Anion-templated hexagonal nanotubes. Chem Sci 2015; 6:6245-6249. [PMID: 30090242 PMCID: PMC6054046 DOI: 10.1039/c5sc02577j] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Accepted: 08/20/2015] [Indexed: 12/27/2022] Open
Abstract
Hydrogen bonding between bromide anions and a tetrahydroxytriptycene ligand was used to assemble crystalline hexagonal tubes with nanometer diameters in good yield. Use of a hexahydroxytriptycene ligand again gave hexagonal nanotubes, but containing the spontaneously-oxidised quinone-tetrahydroxy ligand. The surprisingly robust nanotubes are stable to heat, vacuum and water, and represent an unprecedented use of O-H···anion coordination to assemble complex three-dimensional structures.
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Affiliation(s)
- Nicholas G White
- Department of Chemistry , University of British Columbia , 2036 Main Mall , Vancouver , BC V6T 1Z1 , Canada .
| | - Mark J MacLachlan
- Department of Chemistry , University of British Columbia , 2036 Main Mall , Vancouver , BC V6T 1Z1 , Canada .
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183
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Yan T, Sun LY, Deng YX, Han YF, Jin GX. Facile Synthesis of Size-Tunable Functional Polyimidazolium Macrocycles through a Photochemical Closing Strategy. Chemistry 2015; 21:17610-3. [DOI: 10.1002/chem.201503709] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Indexed: 12/13/2022]
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184
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Zhao C, Huang B, Fu W, Chen J, Zhou J, Xie E. Fabrication of porous nanosheet-based Co 3 O 4 hollow nanocubes for electrochemical capacitors with high rate capability. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.08.057] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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185
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Prusty S, Krishnaswamy S, Bandi S, Chandrika B, Luo J, McIndoe JS, Hanan GS, Chand DK. Reversible Mechanical Interlocking of D-Shaped Molecular Karabiners bearing Coordination-Bond Loaded Gates: Route to Self-Assembled [2]Catenanes. Chemistry 2015; 21:15174-87. [DOI: 10.1002/chem.201502394] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2015] [Indexed: 12/17/2022]
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186
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Ravnik M, Čopar S, Žumer S. Particles with changeable topology in nematic colloids. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2015; 27:354111. [PMID: 26291540 DOI: 10.1088/0953-8984/27/35/354111] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We show that nematic colloids can serve as a highly variable and controllable platform for studying inclusions with changeable topology and their effects on the surrounding ordering fields. We explore morphing of toroidal and knotted colloidal particles into effective spheres, distinctively changing their Euler characteristic and affecting the surrounding nematic field, including topological defect structures. With toroidal particles, the inner nematic defect eventually transitions from a wide loop to a point defect (a small loop). Trefoil particles become linked with two knotted defect loops, mutually forming a three component link, that upon tightening transform into a two-component particle-defect loop link. For more detailed topological analysis, Pontryagin-Thom surfaces are calculated and visualised, indicating an interesting cascade of defect rewirings caused by the shape morphing of the knotted particles.
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Affiliation(s)
- Miha Ravnik
- Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, 1000 Ljubljana, Slovenia
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187
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Lim NCH, Jackson SE. Molecular knots in biology and chemistry. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2015; 27:354101. [PMID: 26291690 DOI: 10.1088/0953-8984/27/35/354101] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Knots and entanglements are ubiquitous. Beyond their aesthetic appeal, these fascinating topological entities can be either useful or cumbersome. In recent decades, the importance and prevalence of molecular knots have been increasingly recognised by scientists from different disciplines. In this review, we provide an overview on the various molecular knots found in naturally occurring biological systems (DNA, RNA and proteins), and those created by synthetic chemists. We discuss the current knowledge in these fields, including recent developments in experimental and, in some cases, computational studies which are beginning to shed light into the complex interplay between the structure, formation and properties of these topologically intricate molecules.
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Affiliation(s)
- Nicole C H Lim
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK. Faculty of Sciences, Universiti Brunei Darussalam, Gadong BE 1410, Brunei Darussalam
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188
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Frasconi M, Fernando IR, Wu Y, Liu Z, Liu WG, Dyar SM, Barin G, Wasielewski MR, Goddard WA, Stoddart JF. Redox Control of the Binding Modes of an Organic Receptor. J Am Chem Soc 2015; 137:11057-68. [DOI: 10.1021/jacs.5b05618] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Marco Frasconi
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Isurika R. Fernando
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Yilei Wu
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
- Argonne-Northwestern
Solar Energy Research (ANSER) Center, Northwestern University, Evanston, Illinois 60208, United States
| | - Zhichang Liu
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Wei-Guang Liu
- Materials
and Process Simulation Center, California Institute of Technology, Pasadena, California 91125, United States
| | - Scott M. Dyar
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
- Argonne-Northwestern
Solar Energy Research (ANSER) Center, Northwestern University, Evanston, Illinois 60208, United States
| | - Gokhan Barin
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Michael R. Wasielewski
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
- Argonne-Northwestern
Solar Energy Research (ANSER) Center, Northwestern University, Evanston, Illinois 60208, United States
| | - William A. Goddard
- Materials
and Process Simulation Center, California Institute of Technology, Pasadena, California 91125, United States
- NanoCentury
KAIST Institute and Graduate School of EEWS (WCU), Korea Advanced Institute of Science and Technology (KAIST), 373-1 Guseong Dong, Yuseong Gu, Daejeon 305-701, Republic of Korea
| | - J. Fraser Stoddart
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
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189
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Zhang G, Gil-Ramírez G, Markevicius A, Browne C, Vitorica-Yrezabal IJ, Leigh DA. Lanthanide Template Synthesis of Trefoil Knots of Single Handedness. J Am Chem Soc 2015. [PMID: 26214819 DOI: 10.1021/jacs.5b07069] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
We report on the assembly of 2,6-pyridinedicarboxamide ligands (1) with point chirality about lanthanide metal ion (Ln(3+)) templates, in which the helical chirality of the resulting entwined 3:1 ligand:metal complexes is covalently captured by ring-closing olefin metathesis to form topologically chiral molecular trefoil knots of single handedness. The ligands do not self-sort (racemic ligands form a near-statistical mixture of homoleptic and heteroleptic lanthanide complexes), but the use of only (R,R)-1 leads solely to a trefoil knot of Λ-handedness, whereas (S,S)-1 forms the Δ-trefoil knot with complete stereoselectivity. The knots and their isomeric unknot macrocycles were characterized by NMR spectroscopy, mass spectrometry, and X-ray crystallography and the expression of the chirality that results from the topology of the knots studied by circular dichroism.
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Affiliation(s)
- Gen Zhang
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Guzmán Gil-Ramírez
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Augustinas Markevicius
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Colm Browne
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | | | - David A Leigh
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
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190
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Ayme JF, Beves JE, Campbell CJ, Gil-Ramírez G, Leigh DA, Stephens AJ. Strong and Selective Anion Binding within the Central Cavity of Molecular Knots and Links. J Am Chem Soc 2015; 137:9812-5. [DOI: 10.1021/jacs.5b06340] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Jean-François Ayme
- School
of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Jonathon E. Beves
- School
of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Christopher J. Campbell
- School
of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Guzmán Gil-Ramírez
- School
of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - David A. Leigh
- School
of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Alexander J. Stephens
- School
of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
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191
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Chen Q, Chen L, Jiang F, Hong M. Controllable Coordination Self-Assembly Based on Flexible Tripodal Ligands: From Finite Metallocages to Infinite Polycatenanes Step by Step. CHEM REC 2015; 15:711-27. [PMID: 26147708 DOI: 10.1002/tcr.201402095] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2014] [Indexed: 12/26/2022]
Abstract
This article describes the developments in coordination self-assembly based on flexible tripodal ligands with different metal species. Various finite metallocages such as M3 L2 , M6 L8 , M6 L4 , M4 L4 and different catenanes based on discrete metallocages constructed from flexible tripodal ligands with suitable metal species are presented here. Many M3 L2 metallocages based on ligands L(1) -L(12) and different two-coordinated metal species have been prepared, in which various Ag(I) salts and other metal species that have been protected by suitable groups, such as Zn(OAc)2 , ZnBr2 , and PdBr2 , have been used as effective acceptors. All of the M6 L8 -type metallocages are constructed from ligands L(2) or L(12) -L(20) and different four-coordinated metal species, such as various palladium(II) salts or NiCl2 , and have similar topological structures. Only a few discrete M6 L4 -type metallocages, based on ligands L(21) -L(24) , have been reported, using different strategies such as protecting groups and steric hindrance. All of the M4 L4 -type cages have similar topological structures and are constructed from ligands L(25) -L(29) with multiple donor sites. More intriguing interlocking ensembles constructed from discrete metallocages are also described here in detail, namely, three [2]catenanes based on ligands L(30) -L(32) and four polycatenanes based on ligands L(33) -L(34) .
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Affiliation(s)
- Qihui Chen
- State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter (FJIRSM), Chinese Academy of Sciences (CAS), Fuzhou, Fujian, 350002, P. R. China
| | - Lian Chen
- State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter (FJIRSM), Chinese Academy of Sciences (CAS), Fuzhou, Fujian, 350002, P. R. China
| | - Feilong Jiang
- State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter (FJIRSM), Chinese Academy of Sciences (CAS), Fuzhou, Fujian, 350002, P. R. China
| | - Maochun Hong
- State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter (FJIRSM), Chinese Academy of Sciences (CAS), Fuzhou, Fujian, 350002, P. R. China
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192
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Glasson CRK, Meehan GV, Davies M, Motti CA, Clegg JK, Lindoy LF. Post-Assembly Covalent Di- and Tetracapping of a Dinuclear [Fe2L3]4+ Triple Helicate and Two [Fe4L6]8+ Tetrahedra Using Sequential Reductive Aminations. Inorg Chem 2015; 54:6986-92. [DOI: 10.1021/acs.inorgchem.5b00940] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Christopher R. K. Glasson
- College of Science, Technology & Engineering, James Cook University, Townsville, Queensland 4811, Australia
| | - George V. Meehan
- College of Science, Technology & Engineering, James Cook University, Townsville, Queensland 4811, Australia
| | - Murray Davies
- College of Science, Technology & Engineering, James Cook University, Townsville, Queensland 4811, Australia
| | - Cherie A. Motti
- The Australian Institute of Marine Science, Townsville, Queensland 4810, Australia
| | - Jack K. Clegg
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane St. Lucia, Queensland 4072 Australia
| | - Leonard F. Lindoy
- College of Science, Technology & Engineering, James Cook University, Townsville, Queensland 4811, Australia
- School of
Chemistry, The University of Sydney, Building F11 Eastern Avenue, Sydney, New South Wales 2006, Australia
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193
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Beves JE, Danon JJ, Leigh DA, Lemonnier JF, Vitorica-Yrezabal IJ. A Solomon link through an interwoven molecular grid. Angew Chem Int Ed Engl 2015; 54:7555-9. [PMID: 25960366 PMCID: PMC4479027 DOI: 10.1002/anie.201502095] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Indexed: 11/21/2022]
Abstract
A molecular Solomon link was synthesized through the assembly of an interwoven molecular grid consisting of four bis(benzimidazolepyridyl)benzthiazolo[5,4-d]thiazole ligands and four zinc(II), iron(II), or cobalt(II) cations, followed by ring-closing olefin metathesis. NMR spectroscopy, mass spectrometry, and X-ray crystallography confirmed the doubly interlocked topology, and subsequent demetalation afforded the wholly organic Solomon link. The synthesis, in which each metal ion defines the crossing point of two ligand strands, suggests that interwoven molecular grids should be useful scaffolds for the rational construction of other topologically complex structures.
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Affiliation(s)
- Jonathon E Beves
- School of Chemistry, University of Edinburgh, The King's Buildings, West Mains Road, Edinburgh, EH9 3JJ (UK)
| | - Jonathan J Danon
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL (UK) http://www.catenane.net
| | - David A Leigh
- School of Chemistry, University of Edinburgh, The King's Buildings, West Mains Road, Edinburgh, EH9 3JJ (UK).
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL (UK) http://www.catenane.net.
| | - Jean-François Lemonnier
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL (UK) http://www.catenane.net
| | - Iñigo J Vitorica-Yrezabal
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL (UK) http://www.catenane.net
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194
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Beves JE, Danon JJ, Leigh DA, Lemonnier JF, Vitorica-Yrezabal IJ. A Solomon Link through an Interwoven Molecular Grid. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201502095] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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195
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Thorp-Greenwood FL, Kulak AN, Hardie MJ. An infinite chainmail of M6L6 metallacycles featuring multiple Borromean links. Nat Chem 2015; 7:526-31. [PMID: 25991533 DOI: 10.1038/nchem.2259] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Accepted: 04/01/2015] [Indexed: 12/29/2022]
Abstract
Borromean rings or links are topologically complex assemblies of three entangled rings where no two rings are interlinked in a chain-like catenane, yet the three rings cannot be separated. We report here a metallacycle complex whose crystalline network forms the first example of a new class of entanglement. The complex is formed from the self-assembly of CuBr2 with the cyclotriveratrylene-scaffold ligand (±)-tris(iso-nicotinoyl)cyclotriguaiacylene. Individual metallacycles are interwoven into a two-dimensional chainmail network where each metallacycle exhibits multiple Borromean-ring-like associations with its neighbours. This only occurs in the solid state, and also represents the first example of a crystalline infinite chainmail two-dimensional network. Crystals of the complex were twinned and have an unusual hollow tubular morphology that is likely to result from a localized dissolution-recrystallization process.
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Affiliation(s)
| | - Alexander N Kulak
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, UK
| | - Michaele J Hardie
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, UK
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196
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Baudron SA, Ruffin H, Hosseini MW. On Zn(II) 2,2'-bisdipyrrin circular helicates. Chem Commun (Camb) 2015; 51:5906-9. [PMID: 25727564 DOI: 10.1039/c5cc00724k] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Coordination of two 2,2'-bisdipyrrin ligands, bearing methyl ester or methylthioether peripheral groups, with Zn(II) cations leads not only to the formation of the expected linear helicates but also concomitantly to novel tri- and tetra-nuclear circular species that have been isolated and fully characterized in solution and by X-ray diffraction.
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Affiliation(s)
- Stéphane A Baudron
- Laboratoire de Tectonique Moléculaire, UMR CNRS 7140, icFRC, Université de Strasbourg, F-67000, Strasbourg, France.
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197
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Lee H, Elumalai P, Singh N, Kim H, Lee SU, Chi KW. Selective Synthesis of Ruthenium(II) Metalla[2]Catenane via Solvent and Guest-Dependent Self-Assembly. J Am Chem Soc 2015; 137:4674-7. [DOI: 10.1021/jacs.5b02573] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- HyeWoo Lee
- Department
of Chemistry, University of Ulsan, Ulsan 680-749, Republic of Korea
| | - Palani Elumalai
- Department
of Chemistry, University of Ulsan, Ulsan 680-749, Republic of Korea
| | - Nem Singh
- Department
of Chemistry, University of Ulsan, Ulsan 680-749, Republic of Korea
| | - Hyunuk Kim
- Energy
Materials Lab, Korea Institute of Energy Research, Daejeon 305-343, Republic of Korea
| | - Sang Uck Lee
- Department
of Applied Chemistry, Hanyang University, Ansan 426-791, Republic of Korea
| | - Ki-Whan Chi
- Department
of Chemistry, University of Ulsan, Ulsan 680-749, Republic of Korea
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198
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Giri C, Sahoo PK, Puttreddy R, Rissanen K, Mal P. Solvent-Free Ball-Milling Subcomponent Synthesis of Metallosupramolecular Complexes. Chemistry 2015; 21:6390-3. [DOI: 10.1002/chem.201500734] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Indexed: 11/08/2022]
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199
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Tabatabaei R, Dehghanpour S, Simpson J, Lipkowski J. Self-assembly of chelating, bridging N, N, N donor ligands and Cu(I), Cu(II), Cd(II), Hg(II): Molecular box versus coordination polymer. Polyhedron 2015. [DOI: 10.1016/j.poly.2014.12.036] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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200
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Roukala J, Zhu J, Giri C, Rissanen K, Lantto P, Telkki VV. Encapsulation of xenon by a self-assembled Fe4L6 metallosupramolecular cage. J Am Chem Soc 2015; 137:2464-7. [PMID: 25671394 DOI: 10.1021/ja5130176] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report (129)Xe NMR experiments showing that a Fe4L6 metallosupramolecular cage can encapsulate xenon in water with a binding constant of 16 M(-1). The observations pave the way for exploiting metallosupramolecular cages as economical means to extract rare gases as well as (129)Xe NMR-based bio-, pH, and temperature sensors. Xe in the Fe4L6 cage has an unusual chemical shift downfield from free Xe in water. The exchange rate between the encapsulated and free Xe was determined to be about 10 Hz, potentially allowing signal amplification via chemical exchange saturation transfer. Computational treatment showed that dynamical effects of Xe motion as well as relativistic effects have significant contributions to the chemical shift of Xe in the cage and enabled the replication of the observed linear temperature dependence of the shift.
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Affiliation(s)
- Juho Roukala
- NMR Research Group, Centre for Molecular Materials, University of Oulu , 90014 Oulu, Finland
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