1
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Zhao H, Wijerathna AMSD, Dong Q, Bai Q, Jiang Z, Yuan J, Wang J, Chen M, Zirnheld M, Li R, Liu D, Wang P, Zhang Y, Li Y. Adjusting the Architecture of Heptagonal Metallo-Macrocycles by Embedding Metal Nodes into the Backbone. Angew Chem Int Ed Engl 2024; 63:e202318029. [PMID: 38087428 DOI: 10.1002/anie.202318029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Indexed: 12/30/2023]
Abstract
Coordination-driven self-assembly has been extensively employed for the bottom-up construction of discrete metallo-macrocycles. However, the prevalent use of benzene rings as the backbone limits the formation of large metallo-macrocycles with more than six edges. Herein, by embedding metal nodes into the ligand backbone, we successfully regulated the ligand arm angle and assembled two giant heptagonal metallo-macrocycles with precise control. The angle between two arms at position 4 of the central terpyridine (tpy) extended after complexation with metal ions, leading to ring expansion of the metallo-macrocycle. The assembled structures were straightforwardly identified through multi-dimensional NMR spectroscopy (1 H, COSY, NOESY), multidimensional mass spectrometry analysis (ESI-MS and TWIM-MS), transmission electron microscopy (TEM), as well as scanning tunneling microscopy (STM). In addition, the catalytic performances of metallo-macrocycles in the oxidation of thioanisole were studied, with both supramolecules exhibiting good conversion rates. Furthermore, fiber-like nanostructures were observed from single-molecule heptagons by hierarchical self-assembly.
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Affiliation(s)
- He Zhao
- Department of Organic and Polymer Chemistry, Hunan Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan, 410083, China
| | | | - Qiangqiang Dong
- Department of Organic and Polymer Chemistry, Hunan Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan, 410083, China
| | - Qixia Bai
- Institute of Environmental Research at Greater Bay Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou Key Laboratory for Clean Energy and Materials, Guangzhou University, Guangzhou, 510006, China
| | - Zhiyuan Jiang
- Department of Organic and Polymer Chemistry, Hunan Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan, 410083, China
| | - Jie Yuan
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, China
| | - Jun Wang
- Institute of Environmental Research at Greater Bay Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou Key Laboratory for Clean Energy and Materials, Guangzhou University, Guangzhou, 510006, China
| | - Mingzhao Chen
- Institute of Environmental Research at Greater Bay Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou Key Laboratory for Clean Energy and Materials, Guangzhou University, Guangzhou, 510006, China
| | - Markus Zirnheld
- Department of Physics, Old Dominion University, Norfolk, VA 23529, USA
| | - Rockwell Li
- Department of Physics, Old Dominion University, Norfolk, VA 23529, USA
| | - Die Liu
- Department of Organic and Polymer Chemistry, Hunan Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan, 410083, China
| | - Pingshan Wang
- Department of Organic and Polymer Chemistry, Hunan Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan, 410083, China
- Institute of Environmental Research at Greater Bay Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou Key Laboratory for Clean Energy and Materials, Guangzhou University, Guangzhou, 510006, China
| | - Yuan Zhang
- Department of Physics, Old Dominion University, Norfolk, VA 23529, USA
| | - Yiming Li
- Department of Organic and Polymer Chemistry, Hunan Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan, 410083, China
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2
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Zare D, Piguet C, Prescimone A, Housecroft CE, Constable EC. Positive Cooperativity Induced by Interstrand Interactions in Silver(I) Complexes with α,α'-Diimine Ligands. Chemistry 2022; 28:e202200912. [PMID: 35638573 PMCID: PMC9401079 DOI: 10.1002/chem.202200912] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Indexed: 11/10/2022]
Abstract
The allosteric positive cooperativity accompanying the formation of compact [CuI (α,α'-diimine)2 ]+ building blocks contributed to the historically efficient synthesis of metal-containing catenates and knotted assemblies. However, its limited magnitude can easily be overcome by the negative chelate cooperativity that controls the overall formation of related polymetallic multistranded helicates and grids. Despite the more abundant use of analogous dioxygen-resistant [AgI (α,α'-diimine)2 ]+ units in modern entangled metallo-supramolecular assemblies, a related thermodynamic justification was absent. Solid-state structural characterizations show the successive formation of [AgI (α,α'-diimine)(CH3 CN)][X] and [AgI (α,α'-diimine)2 ][X] upon the stepwise reactions of α,α'-diimine=2,2'-bipyridine (bpy) or 1,10-phenanthroline (phen) derivatives with AgX (X=BF4 - , ClO4 - , PF6 - ). In room-temperature, 5-10 mM acetonitrile solutions, these cationic complexes exist as mixtures in fast exchange on the NMR timescale. Spectrophotometric titrations using the unsubstituted bpy and phen ligands point to the statistical (=non-cooperative) binding of two successive bidentate ligands around AgI , a mechanism probably driven by the formation of hydrophobic belts, that overcomes the unfavorable decrease in the positive charge borne by the metallic cation. Surprisingly, the addition of methyl groups adjacent to the nitrogen donors (6,6' positions in dmbpy; 2,9 positions in dmphen) induces positive cooperativity for the formation of [Ag(dmbpy)2 ]+ and [Ag(dmphen)2 ]+ , a trend assigned to additional stabilizing interligand interactions. Adding rigid and polarizable phenyl side arms in [Ag(Brdmbpy)2 ]+ further reinforces the positively cooperative process, while limiting the overall decrease in metal-ligand affinity.
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Affiliation(s)
- Davood Zare
- Department of ChemistryUniversity of BaselBPR 1096, Mattenstrasse 24a4058BaselSwitzerland
| | - Claude Piguet
- Department of Inorganic and Analytical ChemistryUniversity of Geneva30 quai E. Ansermet1211Geneva 4Switzerland
| | - Alessandro Prescimone
- Department of ChemistryUniversity of BaselBPR 1096, Mattenstrasse 24a4058BaselSwitzerland
| | | | - Edwin C. Constable
- Department of ChemistryUniversity of BaselBPR 1096, Mattenstrasse 24a4058BaselSwitzerland
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Hennecker CD, Lachance-Brais C, Sleiman H, Mittermaier A. Using transient equilibria (TREQ) to measure the thermodynamics of slowly assembling supramolecular systems. SCIENCE ADVANCES 2022; 8:eabm8455. [PMID: 35385301 PMCID: PMC8985918 DOI: 10.1126/sciadv.abm8455] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Accepted: 02/14/2022] [Indexed: 06/14/2023]
Abstract
Supramolecular chemistry involves the noncovalent assembly of monomers into materials with unique properties and wide-ranging applications. Thermal analysis is a key analytical tool in this field, as it provides quantitative thermodynamic information on both the structural stability and nature of the underlying molecular interactions. However, there exist many supramolecular systems whose kinetics are so slow that the thermodynamic methods currently applied are unreliable or fail completely. We have developed a simple and rapid spectroscopic method for extracting accurate thermodynamic parameters from these systems. It is based on repeatedly raising and lowering the temperature during assembly and identifying the points of transient equilibrium as they are passed on the up- and down-scans. In a proof-of-principle application to the coassembly of polydeoxyadenosine (polyA) containing 15 adenosines and cyanuric acid (CA), we found that roughly 30% of the CA binding sites on the polyA chains were unoccupied, with implications for high-valence systems.
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4
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Pada Majhi T, Teat SJ, Kundu N. Synthesis and structure of vanadium (IV) single-stranded dihelicate involving multi-ring nitrogen-heterocyclic ligand. J INDIAN CHEM SOC 2022. [DOI: 10.1016/j.jics.2022.100401] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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5
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Sa J, Guénée L, Pal P, Hamacek J. Lanthanide Podands with a Short Tripodal Ligand: The Missing Piece of Puzzle. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000861] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Jing‐Peng Sa
- Department of Inorganic and Analytical Chemistry University of Geneva 30 quai Ernest-Ansermet 1211 Geneva 4 Switzerland
| | - Laure Guénée
- Laboratory of Crystallography University of Geneva 24 quai Ernest-Ansermet 1211 Geneva 4 Switzerland
| | - Prodipta Pal
- Department of Physical Chemistry University of Geneva 30 quai Ernest-Ansermet 1211 Geneva 4 Switzerland
- Department of Chemistry, Amity Institute of Applied Sciences Amity University Kolkata Major Arterial Road (South-East), Action Area II, Newtown Kolkata West Bengal 700135 India
| | - Josef Hamacek
- Department of Inorganic and Analytical Chemistry University of Geneva 30 quai Ernest-Ansermet 1211 Geneva 4 Switzerland
- Centre for Molecular Biophysics (CBM) CNRS UPR4301 Rue Charles Sadron 45071 Orléans France
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Ayme JF, Beves JE, Campbell CJ, Leigh DA. Probing the Dynamics of the Imine-Based Pentafoil Knot and Pentameric Circular Helicate Assembly. J Am Chem Soc 2019; 141:3605-3612. [PMID: 30707020 PMCID: PMC6429429 DOI: 10.1021/jacs.8b12800] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
![]()
We investigate the self-assembly
dynamics of an imine-based pentafoil
knot and related pentameric circular helicates, each derived from
a common bis(formylpyridine)bipyridyl building block, iron(II) chloride,
and either monoamines or a diamine. The mixing of circular helicates
derived from different amines led to the complete exchange of the N-alkyl residues on the periphery of the metallo-supramolecular
scaffolds over 4 days in DMSO at 60 °C. Under similar conditions,
deuterium-labeled and nonlabeled building blocks showed full dialdehyde
building block exchange over 13 days for open circular helicates but
was much slower for the analogous closed-loop pentafoil knot (>60
days). Although both knots and open circular helicates self-assemble
under thermodynamic control given sufficiently long reaction times,
this is significantly longer than the time taken to afford the maximum
product yield (2 days). Highly effective error correction occurs during
the synthesis of imine-based pentafoil molecular knots and pentameric
circular helicates despite, in practice, the systems not operating
under full thermodynamic control.
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Affiliation(s)
- Jean-François Ayme
- School of Chemistry , University of Manchester , Oxford Road , Manchester M13 9PL , United Kingdom.,School of Chemistry , University of Edinburgh , The King's Buildings, West Mains Road , Edinburgh EH9 3JJ , United Kingdom
| | - Jonathon E Beves
- School of Chemistry , University of Edinburgh , The King's Buildings, West Mains Road , Edinburgh EH9 3JJ , United Kingdom
| | - Christopher J Campbell
- School of Chemistry , University of Edinburgh , The King's Buildings, West Mains Road , Edinburgh EH9 3JJ , United Kingdom
| | - David A Leigh
- School of Chemistry , University of Manchester , Oxford Road , Manchester M13 9PL , United Kingdom.,School of Chemistry , University of Edinburgh , The King's Buildings, West Mains Road , Edinburgh EH9 3JJ , United Kingdom
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7
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Zhou T, Liu S, Yu D, Zhao D, Rong C, Liu S. On the negative cooperativity of argon clusters containing one lithium cation or fluorine anion. Chem Phys Lett 2019. [DOI: 10.1016/j.cplett.2018.12.019] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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8
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Graf E, Harrowfield J, Kintzinger JP, Lehn JM, Le Moigne J, Rissanen K. Protonation of a Spherical Macrotricyclic Tetramine: Water Inclusion, Allosteric Effect, and Cooperativity. Chempluschem 2018; 83:605-611. [DOI: 10.1002/cplu.201700557] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Revised: 02/05/2018] [Indexed: 11/05/2022]
Affiliation(s)
- Ernest Graf
- Institut de Science et d'Ingénierie Supramoléculaires; Université de Strasbourg; 8 allée Gaspard Monge 67000 Strasbourg France
| | - Jack Harrowfield
- Institut de Science et d'Ingénierie Supramoléculaires; Université de Strasbourg; 8 allée Gaspard Monge 67000 Strasbourg France
| | - Jean-Pierre Kintzinger
- Institut de Science et d'Ingénierie Supramoléculaires; Université de Strasbourg; 8 allée Gaspard Monge 67000 Strasbourg France
| | - Jean-Marie Lehn
- Institut de Science et d'Ingénierie Supramoléculaires; Université de Strasbourg; 8 allée Gaspard Monge 67000 Strasbourg France
| | - Jacques Le Moigne
- Institut de Science et d'Ingénierie Supramoléculaires; Université de Strasbourg; 8 allée Gaspard Monge 67000 Strasbourg France
| | - Kari Rissanen
- Department of Chemistry; Nanoscience Center; University of Jyvaskyla; P.O. Box 35 40014 Jyvaskyla Finland
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Babel L, Baudet K, Hoang TNY, Nozary H, Piguet C. A Rational Approach to Metal Loading of Organic Multi-Site Polymers: Illusion or Reality? Chemistry 2018; 24:5423-5433. [DOI: 10.1002/chem.201705043] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Indexed: 11/12/2022]
Affiliation(s)
- Lucille Babel
- Department of Inorganic, Analytical and Applied Chemistry; University of Geneva; 30 quai E. Ansermet 1211 Geneva 4 Switzerland
| | - Karine Baudet
- Department of Inorganic, Analytical and Applied Chemistry; University of Geneva; 30 quai E. Ansermet 1211 Geneva 4 Switzerland
| | - Thi Nhu Y. Hoang
- Department of Inorganic, Analytical and Applied Chemistry; University of Geneva; 30 quai E. Ansermet 1211 Geneva 4 Switzerland
| | - Homayoun Nozary
- Department of Inorganic, Analytical and Applied Chemistry; University of Geneva; 30 quai E. Ansermet 1211 Geneva 4 Switzerland
| | - Claude Piguet
- Department of Inorganic, Analytical and Applied Chemistry; University of Geneva; 30 quai E. Ansermet 1211 Geneva 4 Switzerland
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10
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11
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Hamacek J, Vuillamy A. Controlling the Structures of Lanthanide Complexes in Self-Assemblies with Tripodal Ligands. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201701075] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Josef Hamacek
- Center for Molecular Biophysics (CBM); CNRS Orléans; Rue Charles Sadron 45071 Orleans Cedex 2 France
| | - Alexandra Vuillamy
- Center for Molecular Biophysics (CBM); CNRS Orléans; Rue Charles Sadron 45071 Orleans Cedex 2 France
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12
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Babel L, Guénée L, Besnard C, Eliseeva SV, Petoud S, Piguet C. Cooperative loading of multisite receptors with lanthanide containers: an approach for organized luminescent metallopolymers. Chem Sci 2017; 9:325-335. [PMID: 29629101 PMCID: PMC5872140 DOI: 10.1039/c7sc03710d] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Accepted: 10/16/2017] [Indexed: 12/15/2022] Open
Abstract
Metal loading of multi-terdentate receptors with [Eu(pbta)3] provides the first anti-cooperative factors large enough for programming metal alternation in lanthanidopolymers at room temperature.
Metal-containing (bio)organic polymers are materials of continuously increasing importance for applications in energy storage and conversion, drug delivery, shape-memory items, supported catalysts, organic conductors and smart photonic devices. The embodiment of luminescent components provides a revolution in lighting and signaling with the ever-increasing development of polymeric light-emitting devices. Despite the unique properties expected from the introduction of optically and magnetically active lanthanides into organic polymers, the deficient control of the metal loading currently limits their design to empirical and poorly reproducible materials. We show here that the synthetic efforts required for producing soluble multi-site host systems Lk are largely overcome by the virtue of reversible thermodynamics for mastering the metal loading with the help of only two parameters: (1) the affinity of the luminescent lanthanide container for a single binding site and (2) the cooperative effect which modulates the successive fixation of metallic units to adjacent sites. When unsymmetrical perfluorobenzene-trifluoroacetylacetonate co-ligands (pbta–) are selected for balancing the charge of the trivalent lanthanide cations, Ln3+, in six-coordinate [Ln(pbta)3] containers, the explored anti-cooperative complexation processes induce nearest-neighbor intermetallic interactions twice as large as thermal energy at room temperature (RT = 2.5 kJ mol–1). These values have no precedent when using standard symmetrical containers and they pave the way for programming metal alternation in luminescent lanthanidopolymers.
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Affiliation(s)
- Lucille Babel
- Department of Inorganic and Analytical Chemistry , University of Geneva , 30 quai E. Ansermet , CH-1211 Geneva 4 , Switzerland .
| | - Laure Guénée
- Laboratory of Crystallography , University of Geneva , 24 quai E. Ansermet , CH-1211 Geneva 4 , Switzerland
| | - Céline Besnard
- Laboratory of Crystallography , University of Geneva , 24 quai E. Ansermet , CH-1211 Geneva 4 , Switzerland
| | - Svetlana V Eliseeva
- Centre de Biophysique Moléculaire , CNRS UPR 4301 , Rue Charles Sadron , F-45071 Orléans Cedex 2 , France .
| | - Stéphane Petoud
- Centre de Biophysique Moléculaire , CNRS UPR 4301 , Rue Charles Sadron , F-45071 Orléans Cedex 2 , France .
| | - Claude Piguet
- Department of Inorganic and Analytical Chemistry , University of Geneva , 30 quai E. Ansermet , CH-1211 Geneva 4 , Switzerland .
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13
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Baudet K, Guerra S, Piguet C. Chemical Potential of the Solvent: A Crucial Player for Rationalizing Host-Guest Affinities. Chemistry 2017; 23:16787-16798. [DOI: 10.1002/chem.201703184] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Indexed: 11/07/2022]
Affiliation(s)
- Karine Baudet
- Department of Inorganic, Analytical and Applied Chemistry; University of Geneva; 30 quai E. Ansermet 1211 Geneva 4 Switzerland
| | - Sebastiano Guerra
- Department of Inorganic, Analytical and Applied Chemistry; University of Geneva; 30 quai E. Ansermet 1211 Geneva 4 Switzerland
| | - Claude Piguet
- Department of Inorganic, Analytical and Applied Chemistry; University of Geneva; 30 quai E. Ansermet 1211 Geneva 4 Switzerland
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14
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von Krbek LKS, Schalley CA, Thordarson P. Assessing cooperativity in supramolecular systems. Chem Soc Rev 2017; 46:2622-2637. [DOI: 10.1039/c7cs00063d] [Citation(s) in RCA: 162] [Impact Index Per Article: 23.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
In this tutorial review, different aspects of cooperativity in supramolecular chemistry and their thermodynamic analysis are discussed.
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Affiliation(s)
| | | | - Pall Thordarson
- School of Chemistry
- The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology
- University of New South Wales
- Australia
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15
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Barry DE, Caffrey DF, Gunnlaugsson T. Lanthanide-directed synthesis of luminescent self-assembly supramolecular structures and mechanically bonded systems from acyclic coordinating organic ligands. Chem Soc Rev 2016; 45:3244-74. [PMID: 27137947 DOI: 10.1039/c6cs00116e] [Citation(s) in RCA: 156] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Herein some examples of the use of lanthanide ions (f-metal ions) to direct the synthesis of luminescent self-assembly systems (architectures) will be discussed. This area of lanthanide supramolecular chemistry is fast growing, thanks to the unique physical (magnetic and luminescent) and coordination properties of the lanthanides, which are often transferred to the resulting supermolecule. The emphasis herein will be on systems that are luminescent, and hence, generated by using either visibly emitting ions (such as Eu(III), Tb(III) and Sm(III)) or near infrared emitting ions (like Nd(III), Yb(III) and Er(III)), formed through the use of templating chemistry, by employing structurally simple ligands, possessing oxygen and nitrogen coordinating moieties. As the lanthanides have high coordination requirements, their use often allows for the formation of coordination compounds and supramolecular systems such as bundles, grids, helicates and interlocked molecules that are not synthetically accessible through the use of other commonly used templating ions such as transition metal ions. Hence, the use of the rare-earth metal ions can lead to the formation of unique and stable species in both solution and in the solid state, as well as functional and responsive structures.
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Affiliation(s)
- Dawn E Barry
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI), Trinity College Dublin, The University of Dublin, Dublin 2, Ireland.
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16
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Affiliation(s)
- A. Subha Mahadevi
- Centre for Molecular Modelling, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad, India 500607
| | - G. Narahari Sastry
- Centre for Molecular Modelling, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad, India 500607
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17
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Equilibrium Effective Molarity As a Key Concept in Ring-Chain Equilibria, Dynamic Combinatorial Chemistry, Cooperativity and Self-assembly. ADVANCES IN PHYSICAL ORGANIC CHEMISTRY 2016. [DOI: 10.1016/bs.apoc.2016.07.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register]
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18
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Hoang TNY, Humbert-Droz M, Dutronc T, Guénée L, Besnard C, Piguet C. A Polyaromatic Terdentate Binding Unit with Fused 5,6-Membered Chelates for Complexing s-, p-, d-, and f-Block Cations. Inorg Chem 2013; 52:5570-80. [DOI: 10.1021/ic400526j] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Thi Nhu Y Hoang
- Department of Inorganic, Analytical and Applied Chemistry, University of Geneva, 30 quai E. Ansermet, CH-1211 Geneva 4, Switzerland.
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19
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Helmich F, Meijer EW. Controlled perturbation of the thermodynamic equilibrium by microfluidic separation of porphyrin-based aggregates in a multi-component self-assembling system. Chem Commun (Camb) 2013; 49:1796-8. [DOI: 10.1039/c2cc36887k] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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20
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Yoo H, Rosen MS, Brown AM, Wiester MJ, Stern CL, Mirkin CA. Elucidating the Mechanism of the Halide-Induced Ligand Rearrangement Reaction. Inorg Chem 2012; 51:11986-95. [DOI: 10.1021/ic3018776] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hyojong Yoo
- Department of Chemistry and the International
Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois, 60208, United States
| | - Mari S. Rosen
- Department of Chemistry and the International
Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois, 60208, United States
| | - Aaron M. Brown
- Department of Chemistry and the International
Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois, 60208, United States
| | - Michael J. Wiester
- Department of Chemistry and the International
Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois, 60208, United States
| | - Charlotte L. Stern
- Department of Chemistry and the International
Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois, 60208, United States
| | - Chad A. Mirkin
- Department of Chemistry and the International
Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois, 60208, United States
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21
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Hoang TNY, Lathion T, Guénée L, Terazzi E, Piguet C. Protonation and Complexation Properties of Polyaromatic Terdentate Six-Membered Chelate Ligands. Inorg Chem 2012; 51:8567-75. [DOI: 10.1021/ic301126y] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Thi Nhu Y Hoang
- Department of Inorganic,
Analytical and Applied Chemistry, University of Geneva, 30 quai E. Ansermet, CH-1211 Geneva 4, Switzerland
| | - Timothée Lathion
- Department of Inorganic,
Analytical and Applied Chemistry, University of Geneva, 30 quai E. Ansermet, CH-1211 Geneva 4, Switzerland
| | - Laure Guénée
- Laboratory of Crystallography, University of Geneva, 24 quai E. Ansermet,
CH-1211 Geneva 4, Switzerland
| | - Emmanuel Terazzi
- Department of Inorganic,
Analytical and Applied Chemistry, University of Geneva, 30 quai E. Ansermet, CH-1211 Geneva 4, Switzerland
| | - Claude Piguet
- Department of Inorganic,
Analytical and Applied Chemistry, University of Geneva, 30 quai E. Ansermet, CH-1211 Geneva 4, Switzerland
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22
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Zaïm A, Nozary H, Guénée L, Besnard C, Lemonnier JF, Petoud S, Piguet C. N-Heterocyclic tridentate aromatic ligands bound to [Ln(hexafluoroacetylacetonate)3] units: thermodynamic, structural, and luminescent properties. Chemistry 2012; 18:7155-68. [PMID: 22549920 DOI: 10.1002/chem.201102827] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2011] [Indexed: 11/09/2022]
Abstract
Herein, we discuss how, why, and when cascade complexation reactions produce stable, mononuclear, luminescent ternary complexes, by considering the binding of hexafluoroacetylacetonate anions (hfac(-)) and neutral, semi-rigid, tridentate 2,6-bis(benzimidazol-2-yl)pyridine ligands (Lk) to trivalent lanthanide atoms (Ln(III)). The solid-state structures of [Ln(Lk)(hfac)(3)] (Ln=La, Eu, Lu) showed that [Ln(hfac)(3)] behaved as a neutral six-coordinate lanthanide carrier with remarkable properties: 1) the strong cohesion between the trivalent cation and the didentate hfac anions prevented salt dissociation; 2) the electron-withdrawing trifluoromethyl substituents limited charge-neutralization and favored cascade complexation with Lk; 3) nine-coordination was preserved for [Ln(Lk)(hfac)(3)] for the complete lanthanide series, whilst a counterintuitive trend showed that the complexes formed with the smaller lanthanide elements were destabilized. Thermodynamic and NMR spectroscopic studies in solution confirmed that these characteristics were retained for solvated molecules, but the operation of concerted anion/ligand transfers with the larger cations induced subtle structural variations. Combined with the strong red photoluminescence of [Eu(Lk)(hfac)(3)], the ternary system Ln(III)/hfac(-)/Lk is a promising candidate for the planned metal-loading of preformed multi-tridentate polymers.
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Affiliation(s)
- Amir Zaïm
- Department of Inorganic, Analytical, and Applied Chemistry, University of Geneva, 30 quai E. Ansermet, 1211 Geneva 4, Switzerland
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Sutton CE, Harding LP, Hardie M, Riis-Johannessen T, Rice CR. Allosteric Effects in a Ditopic Ligand Containing Bipyridine and Tetra-aza-crown Donor Units. Chemistry 2012; 18:3464-7. [DOI: 10.1002/chem.201103217] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2011] [Indexed: 11/10/2022]
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Kundu N, Abtab SMT, Kundu S, Endo A, Teat SJ, Chaudhury M. Triple-Stranded Helicates of Zinc(II) and Cadmium(II) Involving a New Redox-Active Multiring Nitrogenous Heterocyclic Ligand: Synthesis, Structure, and Electrochemical and Photophysical Properties. Inorg Chem 2012; 51:2652-61. [DOI: 10.1021/ic202595p] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nabanita Kundu
- Department of Inorganic
Chemistry, Indian Association for the Cultivation of Science, Kolkata 700 032, India
| | - Sk Md Towsif Abtab
- Department of Inorganic
Chemistry, Indian Association for the Cultivation of Science, Kolkata 700 032, India
| | - Sanchita Kundu
- Department of Inorganic
Chemistry, Indian Association for the Cultivation of Science, Kolkata 700 032, India
| | - Akira Endo
- Department of Materials
and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chioda-ku, Tokyo 102-8554,
Japan
| | - Simon J. Teat
- Advanced Light Source, Lawrence Berkeley National Laboratory, 1 Cyclotron
Road, Mail Stop 2-400, Berkeley, California 94720, United States
| | - Muktimoy Chaudhury
- Department of Inorganic
Chemistry, Indian Association for the Cultivation of Science, Kolkata 700 032, India
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25
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Beves JE, Blight BA, Campbell CJ, Leigh DA, McBurney RT. Strategien und Taktiken für die metallgesteuerte Synthese von Rotaxanen, Knoten, Catenanen und Verschlingungen höherer Ordnung. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201007963] [Citation(s) in RCA: 157] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Beves JE, Blight BA, Campbell CJ, Leigh DA, McBurney RT. Strategies and tactics for the metal-directed synthesis of rotaxanes, knots, catenanes, and higher order links. Angew Chem Int Ed Engl 2011; 50:9260-327. [PMID: 21928462 DOI: 10.1002/anie.201007963] [Citation(s) in RCA: 570] [Impact Index Per Article: 43.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2010] [Indexed: 11/06/2022]
Abstract
More than a quarter of a century after the first metal template synthesis of a [2]catenane in Strasbourg, there now exists a plethora of strategies available for the construction of mechanically bonded and entwined molecular level structures. Catenanes, rotaxanes, knots and Borromean rings have all been successfully accessed by methods in which metal ions play a pivotal role. Originally metal ions were used solely for their coordination chemistry; acting either to gather and position the building blocks such that subsequent reactions generated the interlocked products or by being an integral part of the rings or "stoppers" of the interlocked assembly. Recently the role of the metal has evolved to encompass catalysis: the metal ions not only organize the building blocks in an entwined or threaded arrangement but also actively promote the reaction that covalently captures the interlocked structure. This Review outlines the diverse strategies that currently exist for forming mechanically bonded molecular structures with metal ions and details the tactics that the chemist can utilize for creating cross-over points, maximizing the yield of interlocked over non-interlocked products, and the reactions-of-choice for the covalent capture of threaded and entwined intermediates.
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Affiliation(s)
- Jonathon E Beves
- School of Chemistry, University of Edinburgh, Edinburgh EH9 3JJ, UK
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Hamacek J, Besnard C, Penhouet T, Morgantini PY. Thermodynamics, Structure and Properties of Polynuclear Lanthanide Complexes with a Tripodal Ligand: Insight into their Self-Assembly. Chemistry 2011; 17:6753-64. [DOI: 10.1002/chem.201100173] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2011] [Indexed: 11/06/2022]
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Piguet C. Enthalpy–entropy correlations as chemical guides to unravel self-assembly processes. Dalton Trans 2011; 40:8059-71. [DOI: 10.1039/c1dt10055f] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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29
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Wiester MJ, Ulmann PA, Mirkin CA. Enzymnachbildungen auf der Basis supramolekularer Koordinationschemie. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201000380] [Citation(s) in RCA: 186] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Michael J. Wiester
- Department of Chemistry and the International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208‐3113 (USA), Fax: (+1) 847‐467‐5123
| | - Pirmin A. Ulmann
- Department of Chemistry and the International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208‐3113 (USA), Fax: (+1) 847‐467‐5123
| | - Chad A. Mirkin
- Department of Chemistry and the International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208‐3113 (USA), Fax: (+1) 847‐467‐5123
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30
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Wiester MJ, Ulmann PA, Mirkin CA. Enzyme Mimics Based Upon Supramolecular Coordination Chemistry. Angew Chem Int Ed Engl 2010; 50:114-37. [DOI: 10.1002/anie.201000380] [Citation(s) in RCA: 628] [Impact Index Per Article: 44.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Michael J. Wiester
- Department of Chemistry and the International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208‐3113 (USA), Fax: (+1) 847‐467‐5123
| | - Pirmin A. Ulmann
- Department of Chemistry and the International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208‐3113 (USA), Fax: (+1) 847‐467‐5123
| | - Chad A. Mirkin
- Department of Chemistry and the International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208‐3113 (USA), Fax: (+1) 847‐467‐5123
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31
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Piguet C, Bünzli JCG. Chapter 247 Self-Assembled Lanthanide Helicates. HANDBOOK ON THE PHYSICS AND CHEMISTRY OF RARE EARTHS VOLUME 40 2010. [DOI: 10.1016/s0168-1273(10)40007-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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32
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Piguet C. Five thermodynamic describers for addressing serendipity in the self-assembly of polynuclear complexes in solution. Chem Commun (Camb) 2010; 46:6209-31. [DOI: 10.1039/c0cc00811g] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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33
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Riis-Johannessen T, Dallaâ
Favera N, Todorova T, Huber S, Gagliardi L, Piguet C. Understanding, Controlling and Programming Cooperativity in Self-Assembled Polynuclear Complexes in Solution. Chemistry 2009; 15:12702-18. [DOI: 10.1002/chem.200900904] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Dalla Favera N, Guénée L, Bernardinelli G, Piguet C. In search for tuneable intramolecular intermetallic interactions in polynuclear lanthanide complexes. Dalton Trans 2009:7625-38. [DOI: 10.1039/b905131g] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Kolarik Z. Complexation and Separation of Lanthanides(III) and Actinides(III) by Heterocyclic N-Donors in Solutions. Chem Rev 2008; 108:4208-52. [DOI: 10.1021/cr078003i] [Citation(s) in RCA: 372] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zdenek Kolarik
- Consultant, Kolberger Strasse 9, D-76139 Karlsruhe, Germany
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Hamacek J, Bernardinelli G, Filinchuk Y. Tetrahedral Assembly with Lanthanides: Toward Discrete Polynuclear Complexes. Eur J Inorg Chem 2008. [DOI: 10.1002/ejic.200800455] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Dalla-Favera N, Hamacek J, Borkovec M, Jeannerat D, Gumy F, Bünzli JC, Ercolani G, Piguet C. Linear Polynuclear Helicates as a Link between Discrete Supramolecular Complexes and Programmed Infinite Polymetallic Chains. Chemistry 2008; 14:2994-3005. [DOI: 10.1002/chem.200701465] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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39
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Wu DY, Wu GH, Huang W, Duan CY. Dinuclear double-helical cobalt complexes with two-armed terdentate ligands: Synthesis, structure and physical properties. Polyhedron 2008. [DOI: 10.1016/j.poly.2007.11.025] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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40
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Kurth DG. Metallo-supramolecular modules as a paradigm for materials science. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2008; 9:014103. [PMID: 27877929 PMCID: PMC5099798 DOI: 10.1088/1468-6996/9/1/014103] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2007] [Revised: 03/13/2008] [Accepted: 12/17/2007] [Indexed: 05/27/2023]
Abstract
Metal ion coordination in discrete or extended metallo-supramolecular assemblies offers ample opportunity to fabricate and study devices and materials that are equally important for fundamental research and new technologies. Metal ions embedded in a specific ligand field offer diverse thermodynamic, kinetic, chemical, physical and structural properties that make these systems promising candidates for active components in functional materials. A key challenge is to improve and develop methodologies for placing these active modules in suitable device architectures, such as thin films or mesophases. This review highlights recent developments in extended, polymeric metallo-supramolecular systems and discrete polyoxometalates with an emphasis on materials science.
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Affiliation(s)
- Dirk G. Kurth
- National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan and Max Planck Institute of Colloids and Interfaces, D-14424 Potsdam, Germany
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41
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Semenov SN, Rogachev AY, Eliseeva SV, Pettinari C, Marchetti F, Drozdov AA, Troyanov SI. First direct assembly of molecular helical complexes into a coordination polymer. Chem Commun (Camb) 2008:1992-4. [DOI: 10.1039/b719171e] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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Albrecht M. Supramolecular chemistry-general principles and selected examples from anion recognition and metallosupramolecular chemistry. Naturwissenschaften 2007; 94:951-66. [PMID: 17646953 DOI: 10.1007/s00114-007-0282-7] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2007] [Revised: 05/23/2007] [Accepted: 06/25/2007] [Indexed: 11/28/2022]
Abstract
This review gives an introduction into supramolecular chemistry describing in the first part general principles, focusing on terms like noncovalent interaction, molecular recognition, self-assembly, and supramolecular function. In the second part those will be illustrated by simple examples from our laboratories. Supramolecular chemistry is the science that bridges the gap between the world of molecules and nanotechnology. In supramolecular chemistry noncovalent interactions occur between molecular building blocks, which by molecular recognition and self-assembly form (functional) supramolecular entities. It is also termed the "chemistry of the noncovalent bond." Molecular recognition is based on geometrical complementarity based on the "key-and-lock" principle with nonshape-dependent effects, e.g., solvatization, being also highly influential. Self-assembly leads to the formation of well-defined aggregates. Hereby the overall structure of the target ensemble is controlled by the symmetry features of the certain building blocks. Finally, the aggregates can possess special properties or supramolecular functions, which are only found in the ensemble but not in the participating molecules. This review gives an introduction on supramolecular chemistry and illustrates the fundamental principles by recent examples from our group.
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Affiliation(s)
- Markus Albrecht
- Institut für Organische Chemie, Rheinisch-Westfälische Technische Hochschule Aachen, Landoltweg 1, Aachen, Germany.
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43
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Jeffery JC, Riis-Johannessen T, Anderson CJ, Adams CJ, Robinson A, Argent SP, Ward MD, Rice CR. Localization and Delocalization in a Mixed-Valence Dicopper Helicate. Inorg Chem 2007; 46:2417-26. [PMID: 17326619 DOI: 10.1021/ic061504m] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The coordination chemistry of the tetradentate pyridyl-thiazole (py-tz) N-donor ligand 6,6'-bis(4-phenylthiazol-2-yl)-2,2'-bipyridine (L1) has been investigated. Reaction of L1 with equimolar copper(II) ions results in the formation of the single-stranded mononuclear complex [Cu(L1)(ClO4)2] (1), whereas reaction with copper(I) ions results in the double-stranded dinuclear helicate [Cu2(L1)2][PF6]2 (2). Both complexes were characterized by X-ray crystallography, UV-vis spectroscopy, and electrospray ionization mass spectroscopy (as well as 1H NMR spectroscopy for diamagnetic 2). Complex 2 is redox-active and, upon one-electron oxidation, forms the stable tricationic mixed-valence helicate [Cu2(L1)2]3+ (3). This species can also be prepared in situ by combining [Cu(MeCN)4][BF4], [Cu(H2O)6][BF4]2, and L1 in a 1:1:2 ratio in nitromethane. X-ray crystallographic analysis of 3 provides structural evidence for the presence of an internuclear Cu-Cu bond, with an even distribution of spin density across the two Cu centers. Room-temperature UV-vis spectroscopy is consistent with this finding; however, frozen-glass EPR spectroscopic investigations suggest solvatochromic behavior at 110 K, with the [Cu2]3+ core varying from localized to delocalized depending on the solvent polarity.
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Affiliation(s)
- John C Jeffery
- School of Chemistry, University of Bristol, Bristol BS8 1TS, UK
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44
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Oueslati I, Thuéry P, Shkurenko O, Suwinska K, Harrowfield JM, Abidi R, Vicens J. Calix[4]azacrowns: self-assembly and effect of chain length and O-alkylation on their metal ion-binding properties. Tetrahedron 2007. [DOI: 10.1016/j.tet.2006.10.047] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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45
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Fyles TM, Tong CC. Predicting speciation in the multi-component equilibrium self-assembly of a metallosupramolecular complex. NEW J CHEM 2007. [DOI: 10.1039/b613758j] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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46
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47
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Kurth DG, Higuchi M. Transition metal ions: weak links for strong polymers. SOFT MATTER 2006; 2:915-927. [PMID: 32680179 DOI: 10.1039/b607485e] [Citation(s) in RCA: 131] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Extending macromolecular chemistry beyond carbon-based polymers offers fascinating perspectives and an enormous potential to improve the capacity of macromolecular materials with new dynamic properties.
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Affiliation(s)
- Dirk G Kurth
- Max Planck Institute of Colloids and Interfaces, D-14424 Potsdam, Germany. and National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Masayoshi Higuchi
- National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
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48
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Hamacek J, Piguet C. How to Adapt Scatchard Plot for Graphically Addressing Cooperativity in Multicomponent Self-Assemblies. J Phys Chem B 2006; 110:7783-92. [PMID: 16610874 DOI: 10.1021/jp056932c] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A graphical method has been developed for the reliable detection of cooperativity in polymetallic complexes involving intra- and intermolecular complexation processes. The method relies on the determination of the partial occupancy r(AL)n, which represents the average number of metals bound per preassembled receptor AL(n) made up of n ligands bound to a linker A. We observe nonlinear, i.e., nonstatistical, Scatchard-like plots (r(AL)n/[M] vs r(AL)n) for metal-binding in double-stranded helicates. The present concept is extended to a virtual, pre-organized receptor L(n), in which no specific linker is involved. Applications to several polymetallic helicates reveal the presence of negatively cooperative processes attributed mainly to intermetallic repulsions, in agreement with recent thermodynamic models.
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Affiliation(s)
- Josef Hamacek
- Department of Inorganic, Analytical and Applied Chemistry, University of Geneva, 30 quai E. Ansermet, CH-1211 Geneva 4, Switzerland.
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49
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Hamacek J, Borkovec M, Piguet C. Simple thermodynamics for unravelling sophisticated self-assembly processes. Dalton Trans 2006:1473-90. [PMID: 16538265 DOI: 10.1039/b518461d] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
During the past 15 years, coordination chemistry has rapidly developed toward multicomponent assemblies involving several ligands and metal ions, which are connected via intra- or intermolecular processes. The fascinating structural aspect of these complexation reactions has been early recognized for the design of sophisticated (supra)molecular architectures with novel topologies and functions, while the concomitant energetic part only recently emerged as a potential tools for controlling and programming self-assemblies. In this Perspective, we focus on the modelling of the free energy changes accompanying self-assembly processes. Starting with the original protein-ligand model borrowed from biology, which describes complicated multicomponent assemblies, we present (i) its adaptation to coordination chemistry and (ii) its significance for addressing cooperativity as an extra energy cost resulting from intercomponent interactions. An additional entropic concept arising from the separation of intra- and intermolecular complexation processes is then discussed, together with its explicit consideration for modeling multicomponent complexation reactions. Finally, both aspects (i.e. cooperativity and intra-/intermolecular connections) are combined in the extended site binding model, which is able to dissect free energy changes occurring in sophisticated metal-ligand assemblies with a minimum set of microscopic parameters. Applications to experimental complexation reactions of increasing complexity are systematically discussed, and illustrate the potential and limitations of each model.
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Affiliation(s)
- Josef Hamacek
- Department of Inorganic, Analytical and Applied Chemistry, University of Geneva, 30 quai Ernest Ansermet, CH-1211 Geneva 4
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50
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Zeckert K, Hamacek J, Senegas JM, Dalla-Favera N, Floquet S, Bernardinelli G, Piguet C. Predictions, Synthetic Strategy, and Isolation of a Linear Tetrametallic Triple-Stranded Lanthanide Helicate. Angew Chem Int Ed Engl 2005; 44:7954-8. [PMID: 16292783 DOI: 10.1002/anie.200503040] [Citation(s) in RCA: 78] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Kornelia Zeckert
- Department of Inorganic, Analytical and Applied Chemistry, University of Geneva, Switzerland
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