1
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Chiba Y, Jin Z, Nakamura T, Nabeshima T. An Iron(II) Complex of a Tripodal 2,2´-Bipyridine with Perfluoroalkyl Linkers Showing Anion-Dependent fac/ mer Isomer Ratio. CHEM LETT 2022. [DOI: 10.1246/cl.220314] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yusuke Chiba
- Faculty of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| | - Zhehui Jin
- Faculty of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| | - Takashi Nakamura
- Faculty of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| | - Tatsuya Nabeshima
- Faculty of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
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2
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Li C, Ok M, Choi H, Jung JH. Metallosupramolecular polymers formed with silver(i) ions in aqueous solution. NEW J CHEM 2022. [DOI: 10.1039/d1nj05146f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Supramolecular polymers of a terpyridine-based ligand (L) at three different concentrations of AgNO3 (0, 0.5, and 1.0 equiv.).
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Affiliation(s)
- Chenxing Li
- Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Mirae Ok
- Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Heekyoung Choi
- Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Jong Hwa Jung
- Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University, Jinju, 52828, Republic of Korea
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3
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Aizawa T, Akine S, Saiki T, Nakamura T, Nabeshima T. Rotaxane formation by an allosteric pseudomacrocyclic anion receptor utilising kinetically labile copper( i) coordination properties. Dalton Trans 2022; 51:17277-17282. [DOI: 10.1039/d2dt03331c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A pseudomacrocyclic receptor with hydrogen bonding units spontaneously generates a rotaxane with an anionic axle possessing large end groups.
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Affiliation(s)
- Taeko Aizawa
- Faculty of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| | - Shigehisa Akine
- Graduate School of Natural Science and Technology and WPI Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Toshiyuki Saiki
- Faculty of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| | - Takashi Nakamura
- Faculty of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| | - Tatsuya Nabeshima
- Faculty of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
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4
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Nakamura T. Development of Artificial Receptors Based on Assembly of Metal Complex Units and Desymmetrization of Molecular Components. CHEM LETT 2021. [DOI: 10.1246/cl.210418] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Takashi Nakamura
- Faculty of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
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5
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Morozumi T, Matsuoka R, Nakamura T, Nabeshima T. Solvent-dependent fac/ mer-isomerization and self-assembly of triply helical complexes bearing a pivot part. Chem Sci 2021; 12:7720-7726. [PMID: 34168824 PMCID: PMC8188510 DOI: 10.1039/d1sc01529j] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Tris-chelate metal complexes of unsymmetrical bidentate ligands can form two geometric stereoisomers, facial (fac) and meridional (mer) isomers. Due to the small difference in their properties, the highly-selective synthesis of one of the isomers is challenging. We now designed a series of tripodal ligands with a tris(3-(2-(methyleneoxy)ethoxy)phenyl)methane pivot. Surprisingly, the ratio of the fac/mer isomers of the triply helical FeII complexes significantly changed depending on the solvents. To the best of our knowledge, this is the first example of fac/mer isomerism of a labile tris(2,2'-bipyridine) FeII complex governed by the solvent. Furthermore, well-defined self-assemblies were quantitatively produced by imine bond formation with a suitable diamine. The supramolecular assemblies contained only the fac isomer even though a mixture of the two isomers existed in solution before the condensation reaction. Namely, the self-assembly formation effectively adjusted the geometries of the building unit that results in the suitable supramolecular structure.
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Affiliation(s)
- Takuma Morozumi
- Faculty of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba 1-1-1 Tennodai, Tsukuba Ibaraki 305-8571 Japan
| | - Ryota Matsuoka
- Faculty of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba 1-1-1 Tennodai, Tsukuba Ibaraki 305-8571 Japan
| | - Takashi Nakamura
- Faculty of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba 1-1-1 Tennodai, Tsukuba Ibaraki 305-8571 Japan
| | - Tatsuya Nabeshima
- Faculty of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba 1-1-1 Tennodai, Tsukuba Ibaraki 305-8571 Japan
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6
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Morita H, Akine S, Nakamura T, Nabeshima T. Exclusive formation of a meridional complex of a tripodand and perfect suppression of guest recognition. Chem Commun (Camb) 2021; 57:2124-2127. [PMID: 33538748 DOI: 10.1039/d1cc00146a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Tripodal ligands have been utilized for complexation-induced structural change, but all the tripodal complexes reported so far are facial isomers, which do not completely reduce the recognition ability by closing the binding pocket. We now report the first example of the selective synthesis of a meridional tripodal complex. The tripodal ligand with a 1,3,5-triethyl-2,4,6-tris(methylene)benzene pivot possessing 2,2'-bipyridine on each arm exclusively formed a mononuclear complex with the mer-[Fe(bpy)]2+ unit. The meridional tripodal complex has a unique structure in which one bipyridine unit is self-penetrated. As a result of cavity blockage, the ion recognition property of the tripodand has been successfully suppressed.
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Affiliation(s)
- Hiroki Morita
- Faculty of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan.
| | - Shigehisa Akine
- Graduate School of Natural Science and Technology and WPI Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Takashi Nakamura
- Faculty of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan.
| | - Tatsuya Nabeshima
- Faculty of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan.
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7
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Oh JS, Kim KY, Park J, Lee H, Park Y, Cho J, Lee SS, Kim H, Jung SH, Jung JH. Dynamic Transformation of a Ag+-Coordinated Supramolecular Nanostructure from a 1D Needle to a 1D Helical Tube via a 2D Ribbon Accompanying the Conversion of Complex Structures. J Am Chem Soc 2021; 143:3113-3123. [DOI: 10.1021/jacs.0c10678] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Jeong Sang Oh
- Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Ka Young Kim
- Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Jaehyeon Park
- Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Hyeonju Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Younwoo Park
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Jaeheung Cho
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Shim Sung Lee
- Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Hyungjun Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Sung Ho Jung
- Department of Liberal Arts, Gyeongnam National University of Science and Technology (GNTECH), Jinju 52725, Republic of Korea
| | - Jong Hwa Jung
- Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea
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8
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Song H, Postings M, Scott P, Rogers NJ. Metallohelices emulate the properties of short cationic α-helical peptides. Chem Sci 2021; 12:1620-1631. [PMID: 34163922 PMCID: PMC8179244 DOI: 10.1039/d0sc06412b] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Accepted: 12/24/2020] [Indexed: 12/15/2022] Open
Abstract
Naturally occurring peptides in many living systems perform antimicrobial and anticancer host defence roles, but their potential for clinical application is limited by low metabolic stability and relatively high costs of goods. Self-assembled helical metal complexes provide an attractive synthetic platform for non-peptidic architectures that can emulate some of the properties of short cationic α-helical peptides, with tuneable charge, shape, size and amphipathicity. Correspondingly there is a growing body of evidence demonstrating that these supramolecular architectures exhibit bioactivity that emulates that of the natural systems. We review that evidence in the context of synthetic advances in the area, driven by the potential for biomedical applications. We note some design considerations for new biologically-relevant metallohelices, and give our outlook on the future of these compounds as therapeutic peptidomimetics.
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9
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Liu HJ, Yi R, Chen DM, Huang C, Zhu BX. Self-Assembly by Tridentate or Bidentate Ligand: Synthesis and Vapor Adsorption Properties of Cu(II), Zn(II), Hg(II) and Cd(II) Complexes Derived from a Bis(pyridylhydrazone) Compound. Molecules 2020; 26:molecules26010109. [PMID: 33383694 PMCID: PMC7795747 DOI: 10.3390/molecules26010109] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 12/11/2020] [Accepted: 12/22/2020] [Indexed: 02/06/2023] Open
Abstract
Four complexes, [Cu4L2(OCH3)2(CH3OH)2]·2H2O (1), [Zn2L2Cl4]·2H2O·2CH3OH (2), [Hg2L2Br4]·4CH3OH (3), and {[CdL2Cl2]·4H2O·4CH3OH}n (4), have been synthesized and characterized from a bis(pyridylhydrazone) ligand (L) with copper(II), zinc(II), mercury(II) or cadmium(II), respectively. Complex 1 exists as a centrosymmetric tetranuclear dimer with L as deprotonated tridentate ligand. Complexes 2 and 3 exist as centrosymmetric metallamacrocycles with L as bidentate ligand. Complex 4 exists as a 1D looped-chain coordination polymer. The thermal stabilities and vapor adsorption properties of the four complexes were investigated as well.
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10
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Nakamura T, Yonemura S, Akatsuka S, Nabeshima T. Synthesis of Single Isomeric Complexes with Dissymmetric Structures Using Macrocyclic Homooligomers. Angew Chem Int Ed Engl 2020; 60:3080-3086. [DOI: 10.1002/anie.202011348] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Indexed: 01/19/2023]
Affiliation(s)
- Takashi Nakamura
- Faculty of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS) University of Tsukuba 1-1-1 Tennodai Tsukuba Ibaraki 305-8571 Japan
| | - Sota Yonemura
- Faculty of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS) University of Tsukuba 1-1-1 Tennodai Tsukuba Ibaraki 305-8571 Japan
| | - Shunya Akatsuka
- Faculty of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS) University of Tsukuba 1-1-1 Tennodai Tsukuba Ibaraki 305-8571 Japan
| | - Tatsuya Nabeshima
- Faculty of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS) University of Tsukuba 1-1-1 Tennodai Tsukuba Ibaraki 305-8571 Japan
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11
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Nakamura T, Yonemura S, Akatsuka S, Nabeshima T. Synthesis of Single Isomeric Complexes with Dissymmetric Structures Using Macrocyclic Homooligomers. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202011348] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Takashi Nakamura
- Faculty of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS) University of Tsukuba 1-1-1 Tennodai Tsukuba Ibaraki 305-8571 Japan
| | - Sota Yonemura
- Faculty of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS) University of Tsukuba 1-1-1 Tennodai Tsukuba Ibaraki 305-8571 Japan
| | - Shunya Akatsuka
- Faculty of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS) University of Tsukuba 1-1-1 Tennodai Tsukuba Ibaraki 305-8571 Japan
| | - Tatsuya Nabeshima
- Faculty of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS) University of Tsukuba 1-1-1 Tennodai Tsukuba Ibaraki 305-8571 Japan
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12
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Chinnaraja E, Arunachalam R, Pillai RS, Peuronen A, Rissanen K, Subramanian PS. One‐pot synthesis of [2+2]‐helicate‐like macrocycle and 2+4‐μ
4
‐oxo tetranuclear open frame complexes: Chiroptical properties and asymmetric oxidative coupling of 2‐naphthols. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5666] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Eswaran Chinnaraja
- Inorganic Materials and Catalysis Division Central Salt and Marine Chemicals Research Institute (CSIR‐CSMCRI) Bhavnagar Gujarat 364002 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
| | - Rajendran Arunachalam
- Inorganic Materials and Catalysis Division Central Salt and Marine Chemicals Research Institute (CSIR‐CSMCRI) Bhavnagar Gujarat 364002 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
| | - Renjith S. Pillai
- Department of Chemistry SRM Institute of Science and Technology Kattankulathur Tamil Nadu 603203 India
| | - Anssi Peuronen
- Department of Chemistry, Nanoscience Center University of Jyvaskyla P.O. Box 35 Jyväskylä FI‐40014 Finland
| | - Kari Rissanen
- Department of Chemistry, Nanoscience Center University of Jyvaskyla P.O. Box 35 Jyväskylä FI‐40014 Finland
| | - Palani S. Subramanian
- Inorganic Materials and Catalysis Division Central Salt and Marine Chemicals Research Institute (CSIR‐CSMCRI) Bhavnagar Gujarat 364002 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
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13
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Zhu JY, Xu YL, Li Q, Zhang CB, Wang YB, Zhang L, Fu JY, Zhao L. Monitoring the Hierarchical Evolution from a Double-Stranded Helix to a Well-Defined Microscopic Morphology Based on a Turbine-like Aromatic Molecule. ACS OMEGA 2020; 5:16612-16618. [PMID: 32685827 PMCID: PMC7364588 DOI: 10.1021/acsomega.0c01443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 06/04/2020] [Indexed: 06/11/2023]
Abstract
1H-Indazolo[1,2-b]phthalazine-5,10-dione IPDD with an approximate turbine-like spatial structure, primary assembled double-stranded helices at the first level, was predicted by quantum chemical calculations and confirmed by atomic force microscopy. The higher-dimensional hierarchical architectures including fibrils, helical fibers, spherical shells, and porous prismatic structures were observed in sequence by the scanning electron microscopy technique. The final porous prismatic structures sensitive to NH3 vapors have the potential to be applied in gas sensing and absorbing materials.
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Affiliation(s)
- Jun-Yan Zhu
- College
of Chemistry and Chemical Engineering, Henan
University, Kaifeng 475004, China
| | - Ya-Lun Xu
- College
of Chemistry and Chemical Engineering, Henan
University, Kaifeng 475004, China
| | - Qianqian Li
- Institute
of Advanced Synthesis, School of Chemistry and Molecular Engineering,
Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Chuan-Bao Zhang
- College
of Chemistry and Chemical Engineering, Henan
University, Kaifeng 475004, China
| | - Yan-Bo Wang
- College
of Chemistry and Chemical Engineering, Henan
University, Kaifeng 475004, China
| | - Lixiong Zhang
- College
of Chemical Engineering, State Key Laboratory of Materials-Oriented
Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Ji-Ya Fu
- College
of Chemistry and Chemical Engineering, Henan
University, Kaifeng 475004, China
| | - Lili Zhao
- Institute
of Advanced Synthesis, School of Chemistry and Molecular Engineering,
Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
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14
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Bispicolyamine-Based Supramolecular Polymeric Gels Induced by Distinct Different Driving Forces with and Without Zn 2. Int J Mol Sci 2020; 21:ijms21134617. [PMID: 32610553 PMCID: PMC7369882 DOI: 10.3390/ijms21134617] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 06/24/2020] [Accepted: 06/26/2020] [Indexed: 01/04/2023] Open
Abstract
Metal-coordination polymeric gels are interesting areas as organic/inorganic hybrid supramolecular materials. The bispicolylamine (BPA) based gelator (1) showed excellent gelation with typical fibrillar morphology in acetonitrile. Upon complexing 1 with Zn2+, complexes ([1 + Zn + ACN]2+ and [1 + zinc trifluoromethanesulfonate (ZnOTf)]+) with four coordination numbers were formed, which determine the gel structure significantly. A gel-sol transition was induced, driven by the ratio of the two metal complexes produced. Through nuclear magnetic resonance analysis, the driving forces in the gel formation (i.e., hydrogen-bonding and π-π stacking) were observed in detail. In the absence and the presence of Zn2+, the intermolecular hydrogen-bonds and π-π stacking were the primary driving forces in the gel formation, respectively. In addition, the supramolecular gels exhibited a monolayer lamellar structure irrespective of Zn2+. Conclusively, the gels' elasticity and viscosity reduced in the presence of Zn2+.
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15
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Li X, Shi Z, Wu J, Wu J, He C, Hao X, Duan C. Lighting up metallohelices: from DNA binders to chemotherapy and photodynamic therapy. Chem Commun (Camb) 2020; 56:7537-7548. [PMID: 32573609 DOI: 10.1039/d0cc02194f] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The design of novel agents that specifically target DNA and interrupt its normal biological processes is an attractive goal in drug design. Among the promising metallodrugs, metal-directed self-assembled metallohelices with defined three-dimensional stereochemical structures display unique structure-inherent and unprecedented noncovalent targeting abilities towards DNA, resulting in excellent anticancer or antibiotic activities. A newly burgeoning hotspot is focusing on lighting them up by embedding luminescent metal ions as the vertices. The photoactive metallohelices that combine strong interactions toward DNA targets and efficient 1O2 quantum yield may provide new motivation in diagnostic and photodynamic therapy (PDT) areas. This perspective focuses on research progress on metallohelices as DNA binders and chemotherapeutic agents, and highlights recent advances in fabricating luminescent examples for PDT. The relative assembly strategies are also discussed and compared. Finally, perspectives on the future development of the lit-up metallohelices are presented.
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Affiliation(s)
- Xuezhao Li
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, 116024, China.
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16
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Choi H, Heo S, Lee S, Kim KY, Lim JH, Jung SH, Lee SS, Miyake H, Lee JY, Jung JH. Kinetically controlled Ag +-coordinated chiral supramolecular polymerization accompanying a helical inversion. Chem Sci 2019; 11:721-730. [PMID: 34123045 PMCID: PMC8146097 DOI: 10.1039/c9sc04958d] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Accepted: 11/11/2019] [Indexed: 11/21/2022] Open
Abstract
We report kinetically controlled chiral supramolecular polymerization based on ligand-metal complex with a 3 : 2 (L : Ag+) stoichiometry accompanying a helical inversion in water. A new family of bipyridine-based ligands (d-L1, l-L1, d-L2, and d-L3) possessing hydrazine and d- or l-alanine moieties at the alkyl chain groups has been designed and synthesized. Interestingly, upon addition of AgNO3 (0.5-1.3 equiv.) to the d-L1 solution, it generated the aggregate I composed of the d-L1AgNO3 complex (d-L1 : Ag+ = 1 : 1) as the kinetic product with a spherical structure. Then, aggregate I (nanoparticle) was transformed into the aggregate II (supramolecular polymer) based on the (d-L1)3Ag2(NO3)2 complex as the thermodynamic product with a fiber structure, which led to the helical inversion from the left-handed (M-type) to the right-handed (P-type) helicity accompanying CD amplification. In contrast, the spherical aggregate I (nanoparticle) composed of the d-L1AgNO3 complex with the left-handed (M-type) helicity formed in the presence of 2.0 equiv. of AgNO3 and was not additionally changed, which indicated that it was the thermodynamic product. The chiral supramolecular polymer based on (d-L1)3Ag2(NO3)2 was produced via a nucleation-elongation mechanism with a cooperative pathway. In thermodynamic study, the standard ΔG° and ΔH e values for the aggregates I and II were calculated using the van't Hoff plot. The enhanced ΔG° value of the aggregate II compared to that of the formation of aggregate I confirms that aggregate II was thermodynamically more stable. In the kinetic study, the influence of concentration of AgNO3 confirmed the initial formation of the aggregate I (nanoparticle), which then evolved to the aggregate II (supramolecular polymer). Thus, the concentration of the (d-L1)3Ag2(NO3)2 complex in the initial state plays a critical role in generating aggregate II (supramolecular polymer). In particular, NO3 - acts as a critical linker and accelerator in the transformation from the aggregate I to the aggregate II. This is the first example of a system for a kinetically controlled chiral supramolecular polymer that is formed via multiple steps with coordination structural change.
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Affiliation(s)
- Heekyoung Choi
- Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University Jinju 660-701 Republic of Korea
| | - Sojeong Heo
- Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University Jinju 660-701 Republic of Korea
| | - Seonae Lee
- Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University Jinju 660-701 Republic of Korea
| | - Ka Young Kim
- Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University Jinju 660-701 Republic of Korea
| | - Jong Hyeon Lim
- Department of Chemistry, Sungkyunkwan University Suwon 16419 Republic of Korea
| | - Sung Ho Jung
- Department of Liberal Arts, Gyeongnam National University of Science and Technology (GNTECH) Jinju 52725 Republic of Korea
| | - Shim Sung Lee
- Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University Jinju 660-701 Republic of Korea
| | - Hiroyuki Miyake
- Department of Chemistry, Graduate School of Science, Osaka City University Osaka 558-8585 Japan
| | - Jin Yong Lee
- Department of Chemistry, Sungkyunkwan University Suwon 16419 Republic of Korea
| | - Jong Hwa Jung
- Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University Jinju 660-701 Republic of Korea
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17
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Finelli A, Chabert V, Hérault N, Crochet A, Kim C, Fromm KM. Sequential Multiple-Target Sensor: In3+, Fe2+, and Fe3+ Discrimination by an Anthracene-Based Probe. Inorg Chem 2019; 58:13796-13806. [DOI: 10.1021/acs.inorgchem.9b01478] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Alba Finelli
- Department of Chemistry, University of Fribourg, Ch. du Musée 9, 1700 Fribourg, Switzerland
| | - Valentin Chabert
- Department of Chemistry, University of Fribourg, Ch. du Musée 9, 1700 Fribourg, Switzerland
| | - Nelly Hérault
- Department of Chemistry, University of Fribourg, Ch. du Musée 9, 1700 Fribourg, Switzerland
| | - Aurélien Crochet
- FriMat, Department of Chemistry, University of Fribourg, Ch. du Musée 9, 1700 Fribourg, Switzerland
| | - Cheal Kim
- Department of Fine Chemistry, Seoul National University of Science and Technology (SeoulTech), Seoul 139-743, Republic of Korea
| | - Katharina M. Fromm
- Department of Chemistry, University of Fribourg, Ch. du Musée 9, 1700 Fribourg, Switzerland
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18
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Finelli A, Hérault N, Crochet A, Fromm KM. Compartmentalization of Alkaline-Earth Metals in Salen-Type Cu- and Ni-Complexes in Solution and in the Solid State. ACS OMEGA 2019; 4:10231-10242. [PMID: 31460115 PMCID: PMC6648824 DOI: 10.1021/acsomega.9b00365] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Accepted: 04/25/2019] [Indexed: 06/10/2023]
Abstract
The precise arrangement of metal ions in type and number by a ligand represents an important challenge in biology as well as in materials science. The preorganization of different metal ions such as alkaline-earth and transition-metal ions is of particular interest for the design of catalysts or precursors of oxides. This study is based on a Ω-shaped salen-derived ligand comprising N2O2 and O2O2 coordination sites. The selective binding of Cu(II) and Ni(II) and alkaline-earth-metal ions is influenced by many factors such as the size of the cation, the solvent, or the counterion. UV-vis and 1H NMR titrations and single-crystal X-ray structures reveal that the obtained complexes tend to adopt different structures in solution compared to the solid state. Mainly discrete motifs with a stoichiometry 1:1 (LM1 to alkaline-earth-metal ions) have been shown to form in the solid state, whereas in solution, the 2:1 complexes are predominant.
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Affiliation(s)
- Alba Finelli
- Department
of Chemistry and FriMat, Department of Chemistry, University
of Fribourg, Ch. du Musée 9, 1700 Fribourg, Switzerland
| | - Nelly Hérault
- Department
of Chemistry and FriMat, Department of Chemistry, University
of Fribourg, Ch. du Musée 9, 1700 Fribourg, Switzerland
| | - Aurélien Crochet
- Department
of Chemistry and FriMat, Department of Chemistry, University
of Fribourg, Ch. du Musée 9, 1700 Fribourg, Switzerland
| | - Katharina M. Fromm
- Department
of Chemistry and FriMat, Department of Chemistry, University
of Fribourg, Ch. du Musée 9, 1700 Fribourg, Switzerland
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19
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Nakamura T, Tsukuda S, Nabeshima T. Double-Circularly Connected Saloph-Belt Macrocycles Generated from a Bis-Armed Bifunctional Monomer. J Am Chem Soc 2019; 141:6462-6467. [DOI: 10.1021/jacs.9b00171] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Takashi Nakamura
- Graduate School of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| | - Shinnosuke Tsukuda
- Graduate School of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| | - Tatsuya Nabeshima
- Graduate School of Pure and Applied Sciences and Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
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20
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Brown RT, Fletcher NC, Danos L, Halcovitch NR. A Tripodal Ruthenium(II) Polypyridyl Complex with pH Controlled Emissive Quenching. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800891] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Rodney T. Brown
- School of Chemistry and Chemical Engineering; Queen's University Belfast; BT9 5AG Belfast Northern Ireland UK
| | - Nicholas C. Fletcher
- Department of Chemistry; Lancaster University; Bailrigg 4YB Lancaster, LA1 UK
- School of Chemistry and Chemical Engineering; Queen's University Belfast; BT9 5AG Belfast Northern Ireland UK
| | - Lefteris Danos
- Department of Chemistry; Lancaster University; Bailrigg 4YB Lancaster, LA1 UK
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21
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Dong R, Liu Y, Wu X, Zhou H, Shen X. Synthesis, structure and magnetic properties of two new 3d-3d′-4f clusters of NiIIHoIIIMIII (M = Fe, Co). Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.07.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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22
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Jamieson EMG, Modicom F, Goldup SM. Chirality in rotaxanes and catenanes. Chem Soc Rev 2018; 47:5266-5311. [PMID: 29796501 PMCID: PMC6049620 DOI: 10.1039/c8cs00097b] [Citation(s) in RCA: 190] [Impact Index Per Article: 31.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Indexed: 12/20/2022]
Abstract
Although chiral mechanically interlocked molecules (MIMs) have been synthesised and studied, enantiopure examples are relatively under-represented in the pantheon of reported catenanes and rotaxanes and the underlying chirality of the system is often even overlooked. This is changing with the advent of new applications of MIMs in catalysis, sensing and materials and the appearance of new methods to access unusual stereogenic units unique to the mechanical bond. Here we discuss the different stereogenic units that have been investigated in catenanes and rotaxanes, examples of their application, methods for assigning absolute stereochemistry and provide a perspective on future developments.
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Affiliation(s)
- E. M. G. Jamieson
- Chemistry
, University of Southampton
,
University Road, Highfield
, Southampton
, SO17 1BJ
, UK
.
| | - F. Modicom
- Chemistry
, University of Southampton
,
University Road, Highfield
, Southampton
, SO17 1BJ
, UK
.
| | - S. M. Goldup
- Chemistry
, University of Southampton
,
University Road, Highfield
, Southampton
, SO17 1BJ
, UK
.
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23
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Sekiya R, Fukuda M, Kuroda R. Site-selective anion recognition of an interlocked dimer. Org Biomol Chem 2018; 15:4328-4335. [PMID: 28470305 DOI: 10.1039/c7ob00328e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Interlocked dimer 2, which is composed of two physically interlocked monomers 1, has three cavities (cavity A × 2 and cavity B × 1) and can encapsulate three anions, such as NO3- and BF4-, one anion per cavity. There are six possible encapsulation patterns, A-F; two (A and F) contain only one kind of anion and the others (B-E) contain both NO3- and BF4- at the same time with different ratios and with different positions. Anion competition experiments showed that in addition to F, which encapsulates three NO3- ions, C, in which NO3- and BF4- ions are captured in cavities A and cavity B, respectively, was selectively formed. Detailed investigations have revealed that B-E were formed by dimerization, but three of the four were subjected to anion exchange and converged into C or F. This selective formation can be explained by the fact that NO3- is a better anion template than BF4-, as well as the molecular structure of the interlocked dimer; cavities A are surrounded by four bridging ligands and can be accessed by free anions, whereas no space available for anion exchange is present around cavity B because this cavity is surrounded by eight bridging ligands. Therefore, the BF4- ions in cavities A are expelled by free NO3-, but the BF4- ion in cavity B is not, resulting in the selection of C and F. We have found that the volume of the cavity influenced anion recognition. New interlocked dimer 3, which has smaller cavities than those of 2, captured three NO3- ions to form F, whereas only a small amount of an interlocked dimer that contains both NO3- and BF4- was formed.
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Affiliation(s)
- Ryo Sekiya
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo, 153-8902 Japan.
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24
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Transmetalation for Flexible Pendant-Armed Schiff-Base Macrocyclic Complexes Influenced by Halide Effects. Inorg Chem 2018; 57:1438-1448. [PMID: 29323889 DOI: 10.1021/acs.inorgchem.7b02835] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Three 46-membered [2 + 2] pendant-armed Schiff-base macrocyclic dinuclear CdII and CuII complexes (2a, 2b, and 3b) and one 23-membered [1 + 1] CuII macrocycle 4a were prepared from the template-directed condensation reactions between 1,2-bis(2-aminoethoxy)-ethane and extended Cl-dialdehyde in the presence of CdX2 and CuX2 (X = Cl and Br), in which halide effects play important roles in the organization of final macrocyclic complexes in addition to the dominant influence of metal cations. Transmetalation was intensively studied among these CdII and CuII complexes with large and flexible macrocyclic ligands, including two previously synthesized dinuclear ZnII macrocycles (1a and 1b). Our results indicate that ZnII → CuII and CdII → CuII transmetalation proceeds more quickly than that from CdII to ZnII, and all the processes are found to be irreversible. It is noted that a [2 + 2] heterodinuclear CdIIZnII macrocyclic intermediate could be detected by ESI-MS together with [2 + 2] homodinuclear CdII and ZnII macrocyclic complexes. Furthermore, distinct halide behavior was observed in the in situ CdII → CuII and ZnII → CuII metal-ion exchange. That is to say, [2 + 2] macrocycles (1a and 2a) could be converted to [1 + 1] macrocycles 4a and 4b under the reflux condition in the case of CuCl2, accompanied by the configurational transformation from half-folded dinuclear ZnII and CdII to unfolded CuII macrocyclic skeleton. In contrast, CuBr2 leads to a highly efficient transmetalation to corresponding [2 + 2] dinuclear CuII complex 3b from both 1b and 2b no matter the experimental condition used.
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25
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Go M, Choi H, Moon CJ, Park J, Choi Y, Lee SS, Choi MY, Jung JH. Origin of Both Right- and Left-Handed Helicities in a Supramolecular Gel with and without Ni 2+ at the Supramolecular Level. Inorg Chem 2018; 57:16-19. [PMID: 29235860 DOI: 10.1021/acs.inorgchem.7b02588] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We demonstrate the different origins of helical directions in polymeric gels derived from a hydrazone reaction in the absence and presence of Ni2+. The right-handed helicity of polymeric gels without Ni2+ originates from the enantiomeric d-form alanine moiety embedded in the building block. However, the right-handed helicity is inverted to a left-handed helicity upon the addition of Ni2+, indicating that added Ni2+ greatly affects the conformation of the polymeric gel by overcoming the influence of the enantiomer embedded in the building block on the helicity at the supramolecular level. More interestingly, the ratio of the right-toleft-handed helical fibers varies with the concentration of Ni2+, which converts from 100% right-handed helical fiber to 90% left-handed helical fiber. In the presence of Ni2+, both right- and left-handed helical fibers coexist at the supramolecular level. Some fibers also exhibit both right- and left-handed helicities in a single fiber.
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Affiliation(s)
- Misun Go
- Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University , Jinju 52828, South Korea
| | - Heekyoung Choi
- Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University , Jinju 52828, South Korea
| | - Cheol Joo Moon
- Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University , Jinju 52828, South Korea
| | - Jaehyeon Park
- Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University , Jinju 52828, South Korea
| | - Yeonweon Choi
- Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University , Jinju 52828, South Korea
| | - Shim Sung Lee
- Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University , Jinju 52828, South Korea
| | - Myong Yong Choi
- Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University , Jinju 52828, South Korea
| | - Jong Hwa Jung
- Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University , Jinju 52828, South Korea
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26
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Liu D, Liu H, Song B, Chen M, Huang J, Wang J, Yang X, Sun W, Li X, Wang P. Terpyridine-based metallo-organic cages and supramolecular gelation by coordination-driven self-assembly and host–guest interaction. Dalton Trans 2018; 47:14227-14232. [DOI: 10.1039/c8dt01044g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Dimetallo-cages connected with dialkylammonium salts via host–guest interactions resulted in thermodynamic polymer metallo-gels.
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27
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Molecular recognition by multiple metal coordination inside wavy-stacked macrocycles. Nat Commun 2017; 8:129. [PMID: 28744007 PMCID: PMC5527018 DOI: 10.1038/s41467-017-00076-8] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Accepted: 05/31/2017] [Indexed: 02/08/2023] Open
Abstract
Most biological and synthetic receptors for small organic molecules employ a combination of relatively weak intermolecular interactions such as hydrogen bonds. A host compound that utilizes stronger yet reversible bonding in a synergistic manner could realize precise recognition, but the regulation and spatial arrangement of such reactive interaction moieties have been a challenge. Here, we show a multinuclear zinc complex synthesized from a macrocyclic ligand hexapap, which inwardly arranges labile metal coordination sites for external molecules. The metallomacrocycle forms a unique wavy-stacked structure upon binding a suitable length of dicarboxylic acids via multipoint coordination bonding. The saddle-shaped deformation and dimerization realize the differentiation of the interaction moieties, and change of guest-binding modes at specific metal coordination sites among the many present have been achieved utilizing acid/base as external stimuli. Synergistic use of coordination bonds that are strong and reversible realizes unique molecular recognition in artificial systems. Here, the authors show that a zinc-based metallomacrocyle can bind dicarboxylic acids of suitable length at specific metal sites by shape deformation and dimerization.
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28
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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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29
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Samanta A, Liu Z, Nalluri SKM, Zhang Y, Schatz GC, Stoddart JF. Supramolecular Double-Helix Formation by Diastereoisomeric Conformations of Configurationally Enantiomeric Macrocycles. J Am Chem Soc 2016; 138:14469-14480. [PMID: 27709916 DOI: 10.1021/jacs.6b09258] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Solid-state superstructures, resulting from assemblies programmed by homochirality, are attracting considerable attention. In addition, artificial double-helical architectures are being investigated, especially in relation to the ways in which homochiral small molecules can be induced to yield helical forms as a result of chiral induction. Herein, we report the highly specific self-assembly upon crystallization of a double-helical superstructure from an enantiopure macrocyclic dimer which adopts two diastereoisomeric conformations in a molar ratio of 1.5:1 in dimethyl sulfoxide. These two conformational diastereoisomers self-organize-and self-sort-in the crystalline phase in equimolar proportions to form two single-handed helices which are complementary to each other, giving rise to the assembly of a double helix that is stabilized by intermolecular [C-H···O] and π-π stacking interactions. The observed self-sorting phenomenon occurs on going from a mixed-solvent system containing two equilibrating conformational diastereoisomers, presumably present in unequal molar proportions, into the solid state. The diastereoisomeric conformations are captured upon crystallization in a 1:1 molar ratio in the double-helical superstructure, whose handedness is dictated by the choice of the enantiomeric macrocyclic dimer. The interconversion of the two conformational diastereoisomers derived from each configurationally enantiomeric macrocycle was investigated in CD3SOCD3 solution by variable-temperature 1H NMR spectroscopy (VT NMR) and circular dichroism (VT CD). The merging of the resonances for the protons corresponding to the two diastereoisomers at a range of coalescence temperatures in the VT NMR spectra and occurrence of the isosbestic points in the VT CD spectra indicate that the two diastereoisomers are interconverting slowly in solution on the 1H NMR time scale but rapidly on the laboratory time scale. To the best of our knowledge, the self-assembly of such solid-state superstructures from two conformational diastereoisomers of a homochiral macrocycle is a rare, if not unique, occurrence.
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Affiliation(s)
- Avik Samanta
- Department of Chemistry, Northwestern University , 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - Zhichang Liu
- Department of Chemistry, Northwestern University , 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - Siva Krishna Mohan Nalluri
- Department of Chemistry, Northwestern University , 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - Yu Zhang
- Department of Chemistry, Northwestern University , 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - George C Schatz
- Department of Chemistry, Northwestern University , 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - J Fraser Stoddart
- Department of Chemistry, Northwestern University , 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
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30
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Zhou K, Cao H, Gao P, Cui Z, Ding Y, Cai Y. Autocatalytic Self-Sorting in Biomimetic Polymer. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b00152] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Kaiyi Zhou
- State and Local Joint Engineering
Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory
of Advanced Functional Polymer Design and Application, Suzhou Key
Laboratory of Macromolecular Design and Precision Synthesis, College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Hui Cao
- State and Local Joint Engineering
Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory
of Advanced Functional Polymer Design and Application, Suzhou Key
Laboratory of Macromolecular Design and Precision Synthesis, College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Pan Gao
- State and Local Joint Engineering
Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory
of Advanced Functional Polymer Design and Application, Suzhou Key
Laboratory of Macromolecular Design and Precision Synthesis, College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Zhigang Cui
- State and Local Joint Engineering
Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory
of Advanced Functional Polymer Design and Application, Suzhou Key
Laboratory of Macromolecular Design and Precision Synthesis, College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Yi Ding
- State and Local Joint Engineering
Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory
of Advanced Functional Polymer Design and Application, Suzhou Key
Laboratory of Macromolecular Design and Precision Synthesis, College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Yuanli Cai
- State and Local Joint Engineering
Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory
of Advanced Functional Polymer Design and Application, Suzhou Key
Laboratory of Macromolecular Design and Precision Synthesis, College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
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31
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Liu S, Zhao L, Xiao Y, Huang T, Li J, Huang J, Yan Y. Allostery in molecular self-assemblies: metal ions triggered self-assembly and emissions of terthiophene. Chem Commun (Camb) 2016; 52:4876-9. [DOI: 10.1039/c6cc00492j] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Allostery in molecular self-assembly: binding of Ag+ to the head of a coordinating amphiphile TTC4L changes the emission color of the terthiophene group attached to the chain end via a conformation triggered self-assembly.
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Affiliation(s)
- Shuai Liu
- Beijing National Laboratory for Molecular Sciences
- Institution College of Chemistry and Molecular Engineering
- Peking University
- Beijing
- China
| | - Li Zhao
- School of Food and Chemical Engineering
- Beijing Technology and Business University
- Beijing
- China
| | - Yunlong Xiao
- Beijing National Laboratory for Molecular Sciences
- Institution College of Chemistry and Molecular Engineering
- Peking University
- Beijing
- China
| | - Tian Huang
- Beijing National Laboratory for Molecular Sciences
- Institution College of Chemistry and Molecular Engineering
- Peking University
- Beijing
- China
| | - Jie Li
- Beijing National Laboratory for Molecular Sciences
- Institution College of Chemistry and Molecular Engineering
- Peking University
- Beijing
- China
| | - Jianbin Huang
- Beijing National Laboratory for Molecular Sciences
- Institution College of Chemistry and Molecular Engineering
- Peking University
- Beijing
- China
| | - Yun Yan
- Beijing National Laboratory for Molecular Sciences
- Institution College of Chemistry and Molecular Engineering
- Peking University
- Beijing
- China
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