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Sharma S, Krishnaswamy S, Prusty S, Chand DK. A pair of conjoined trinuclear sub-frameworks in a pentanuclear double-cavity discrete coordination cage. Chem Sci 2024; 15:11287-11301. [PMID: 39055040 PMCID: PMC11268487 DOI: 10.1039/d4sc01078g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Accepted: 06/11/2024] [Indexed: 07/27/2024] Open
Abstract
Combination of Pd(ii) with selected bis-monodentate ligands produces the familiar multinuclear Pd m L2m type self-assembled "single-cavity discrete coordination cages" (SCDCC). If the ligand provides parallel coordination vectors, then it forms a binuclear Pd2L4 type cage, whereas utilization of ligands having appropriately divergent coordination vectors results in specific higher nuclear complexes. In contrast, preparation of emergent "multi-cavity discrete coordination cages" (MCDCC) using Pd(ii) and designer ligands is quite captivating where the neighboring cavities of the framework are conjoined with each other through a common metal center. A pair of conjoined binuclear Pd2L4 type sub-frameworks are present in a trinuclear Pd3L4 type double-cavity cage prepared from Pd(ii) and a tris-monodentate ligand having parallel coordination vectors. The present work envisioned a design to make double-cavity coordination cages having a pair of conjoined trinuclear Pd3L6 type sub-frameworks. To fulfill the objective we combined Pd(ii) with a mixture of designer bis-monodentate ligand (L) and tris-monodentate ligand (L') in a 5 : 4 : 4 ratio in one pot to afford the targeted pentanuclear type cage. The choice of bis-monodentate ligand L is based on the divergent nature of the coordination vectors suitable to produce a Pd3L6 type SCDCC. The tris-monodentate ligand L' having two arms is designed in such a manner that each of the arms reasonably resembles L. Study of the complexation behavior of Pd(ii) with L' provided additional guiding factors essential for the successful making of type MCDCC by integrative self-sorting. A few other MCDCC including lower symmetry versions were also prepared in the course of the work.
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Affiliation(s)
- Shruti Sharma
- IoE Center of Molecular Architecture, Department of Chemistry, Indian Institute of Technology Madras Chennai 600036 India
| | - Shobhana Krishnaswamy
- IoE Center of Molecular Architecture, Department of Chemistry, Indian Institute of Technology Madras Chennai 600036 India
| | - Soumyakanta Prusty
- IoE Center of Molecular Architecture, Department of Chemistry, Indian Institute of Technology Madras Chennai 600036 India
| | - Dillip Kumar Chand
- IoE Center of Molecular Architecture, Department of Chemistry, Indian Institute of Technology Madras Chennai 600036 India
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2
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Li K, Li Z, Yuan J, Chen M, Zhao H, Jiang Z, Wang J, Jiang Z, Li Y, Chan YT, Wang P, Liu D. High-order layered self-assembled multicavity metal--organic capsules and anti-cooperative host-multi-guest chemistry. Chem Sci 2024; 15:8913-8921. [PMID: 38873050 PMCID: PMC11168090 DOI: 10.1039/d4sc01204f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Accepted: 05/07/2024] [Indexed: 06/15/2024] Open
Abstract
The construction and application of metal-organic cages with accessible internal cavities have witnessed rapid development, however, the precise synthesis of complex metal-organic capsules with multiple cavities and achievement of multi-guest encapsulation, and further in-depth comprehension of host-multi-guest recognition remain a great challenge. Just like building LEGO blocks, herein, we have constructed a series of high-order layered metal-organic architectures of generation n (n = 1/2/3/4 is also the number of cavities) by multi-component coordination-driven self-assembly using porphyrin-containing tetrapodal ligands (like plates), multiple parallel-podal ligands (like clamps) and metal ions (like nodes). Importantly, these high-order assembled structures possessed different numbers of rigid and separate cavities formed by overlapped porphyrin planes with specific gaps. The host-guest experiments and convincing characterization proved that these capsules G2-G4 could serve as host structures to achieve multi-guest recognition and unprecedentedly encapsulate up to four C60 molecules. More interestingly, these capsules revealed negative cooperation behavior in the process of multi-guest recognition, which provides a new platform to further study complicated host-multi-guest interaction in the field of supramolecular chemistry.
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Affiliation(s)
- Kaixiu 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
| | - Zhengguang 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
| | - Jie Yuan
- School of Chemistry and Chemical Engineering, Henan Normal University Xinxiang Henan 453007 China
| | - Mingzhao Chen
- Department 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
| | - 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
| | - 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
| | - Jun Wang
- Department 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
| | - Zhilong Jiang
- Department 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
| | - 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
| | - Yi-Tsu Chan
- Department of Chemistry, National Taiwan University Taipei 10617 Taiwan
| | - 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
- Department 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
| | - 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
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3
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Mishra SS, Krishnaswamy S, Chand DK. Neighboring Cage Participation for Assisted Construction of Self-Assembled Multicavity Conjoined Cages and Augmented Guest Binding. J Am Chem Soc 2024; 146:4473-4488. [PMID: 38334098 DOI: 10.1021/jacs.3c10565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2024]
Abstract
A set of Pd2L4, Pd3L4, and Pd4L4-type single-, double-, and triple-cavity cages are prepared by complexation of Pd(NO3)2 with designer bis-monodentate (L1), tris-monodentate (L2), and tetrakis-monodentate (L3) ligands. The Pd2L4 cage exists in equilibrium with a Pd3L6 cage; the equilibrium shifted to Pd2L4 at 70 °C or upon addition of pyrazine-N,N'-dioxide (PZDO). The Pd2L4 cage binds a PZDO molecule using electrostatic, bifurcated H-bonding and overcoordinated H-bonding interactions. The discrete Pd3L4 and Pd4L4 compounds are conjoined cages comprising of unequal sized Pd2L4 cages (bigger and smaller). The bigger unit of Pd3L4 cage selectively binds a PZDO, and the smaller one binds a nitrate, fluoride, chloride, or bromide. The Pd4L4 cage, having a central bigger Pd2L4 cavity and two smaller peripheral Pd2L4 cavities, binds one PZDO and two nitrate, fluoride, chloride, or bromide. The smaller cavity can be prepared individually from Pd(II) and bis-monodentate ligand (L4), however, in the presence of template like a nitrate, fluoride, chloride, or bromide; otherwise, it forms an oligomeric mixture. Notably, the conjoined Pd3L4 and Pd4L4 cages could be prepared with (preferably) or without using a template for smaller cavity, and the bigger Pd2L4 is formed by sacrificing the possibility of the Pd3L6 moiety. Thus, the conjoined cages are formed in a symbiotic manner where the neighboring cages participate in the formation of each other. The binding of PZDO shows that the presence of one neighboring cage (as in Pd3L4) augments the binding affinity and that is further augmented in the presence of two neighboring cages (as in Pd4L4).
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Affiliation(s)
- Srabani S Mishra
- IoE Center of Molecular Architecture, Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | - Shobhana Krishnaswamy
- IoE Center of Molecular Architecture, Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | - Dillip Kumar Chand
- IoE Center of Molecular Architecture, Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
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4
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Moree LK, Faulkner LAV, Crowley JD. Heterometallic cages: synthesis and applications. Chem Soc Rev 2024; 53:25-46. [PMID: 38037385 DOI: 10.1039/d3cs00690e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
High symmetry metallosupramolecular architectures (MSAs) have been exploited for a range of applications including molecular recognition, catalysis and drug delivery. Recently there have been increasing efforts to enhance those applications by generating reduced symmetry MSAs. While there are several emerging methods for generating lower symmetry MSAs, this tutorial review examines the general methods used for synthesizing heterometallic MSAs with a particular focus on heterometallic cages. Additionally, the intrinsic properties of the cages and their potential emerging applications as host-guest systems and reaction catalysts are described.
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Affiliation(s)
- Lana K Moree
- Department of Chemistry, University of Otago, PO Box 56, Dunedin 9054, New Zealand.
- MacDiarmid Institute for Advanced Materials and Nanotechnology, Wellington 6140, New Zealand
| | - Logan A V Faulkner
- Department of Chemistry, University of Otago, PO Box 56, Dunedin 9054, New Zealand.
- MacDiarmid Institute for Advanced Materials and Nanotechnology, Wellington 6140, New Zealand
| | - James D Crowley
- Department of Chemistry, University of Otago, PO Box 56, Dunedin 9054, New Zealand.
- MacDiarmid Institute for Advanced Materials and Nanotechnology, Wellington 6140, New Zealand
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5
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Lewis JEM. Pseudo-heterolepticity in Low-Symmetry Metal-Organic Cages. Angew Chem Int Ed Engl 2022; 61:e202212392. [PMID: 36074024 PMCID: PMC9828238 DOI: 10.1002/anie.202212392] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Indexed: 01/12/2023]
Abstract
Heteroleptic metal-organic cages, formed through integrative self-assembly of ligand mixtures, are highly attractive as reduced symmetry supramolecular hosts. Ensuring high-fidelity, non-statistical self-assembly, however, presents a significant challenge in molecular engineering due to the inherent difficulty in predicting thermodynamic energy landscapes. In this work, two conceptual strategies are described that circumvent this issue, using ligand design strategies to access structurally sophisticated metal-organic hosts. Using these approaches, it was possible to realise cavity environments described by two inequivalent, unsymmetrical ligand frameworks, representing a significant step forward in the construction of highly anisotropic confined spaces.
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Affiliation(s)
- James E. M. Lewis
- School of ChemistryUniversity of BirminghamEdgbastonBirmingham B15 2TTUK
- Previous address: Department of ChemistryMolecular Sciences Research HubImperial College London82 Wood LaneLondonW12 0BZUK
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6
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Lewis J. Pseudo‐heterolepticity in Low‐Symmetry Metal‐Organic Cages. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202212392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- James Lewis
- University of Birmingham School of Chemistry Edgbaston B15 2TT Birmingham UNITED KINGDOM
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7
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8
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Dasary H, Sarkar M, Chand DK. Configurational ligand isomerism in conjoined-cages. Chem Commun (Camb) 2022; 58:8480-8483. [PMID: 35792679 DOI: 10.1039/d2cc02837a] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Double-decker shaped conjoined-cages of Pd3L4 formulation are prepared via self-assembly of Pd(II) with a set of three regioisomeric tridentate ligands. Alongside the targeted double-decker cage, unprecedented hour-glass shaped conjoined-cages of Pd3L4 formulation are also formed in two cases. The double-decker cage prepared from one ligand system and the hour-glass from another (but with a regioisomeric ligand) are structurally well suited to exemplify configurational ligand isomerism.
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Affiliation(s)
- Hareesha Dasary
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India.
| | - Moumita Sarkar
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India.
| | - Dillip Kumar Chand
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India.
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9
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Lisboa LS, Preston D, McAdam CJ, Wright LJ, Hartinger CG, Crowley JD. Heterotrimetallic Double Cavity Cages: Syntheses and Selective Guest Binding. Angew Chem Int Ed Engl 2022; 61:e202201700. [PMID: 35194905 PMCID: PMC9310627 DOI: 10.1002/anie.202201700] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Indexed: 11/29/2022]
Abstract
A strategy for the generation of heterotrimetallic double cavity (DC) cages [Pdn Ptm L4 ]6+ (DC1: n=1, m=2; and DC2: n=2, m=1) is reported. The DC cages were generated by combining an inert platinum(II) tetrapyridylaldehyde complex with a suitably substituted pyridylamine and PdII ions. 1 H and DOSY nuclear magnetic resonance spectroscopy (NMR) and electrospray ionization mass spectrometry (ESIMS) data were consistent with the formation of the DC architectures. DC1 and DC2 were shown to interact with several different guest molecules. The structure of DC1, which features two identical cavities, binding two 2,6-diaminoanthraquinone (DAQ) guest molecules was determined by single-crystal X-ray crystallography. In addition, DC1 was shown to bind two molecules of 5-fluorouracil (5-FU) in a statistical (non-cooperative) manner. In contrast, DC2, which features two different cage cavities, was found to interact with two different guests, 5-FU and cisplatin, selectively.
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Affiliation(s)
- Lynn S. Lisboa
- Department of ChemistryUniversity of OtagoPO Box 56Dunedin9054New Zealand
| | - Dan Preston
- Research School of ChemistryAustralian National UniversityCanberraACT 0200Australia
| | - C. John McAdam
- Department of ChemistryUniversity of OtagoPO Box 56Dunedin9054New Zealand
| | - L. James Wright
- School of Chemical SciencesUniversity of AucklandPrivate Bag 92019Auckland1142New Zealand
| | - Christian G. Hartinger
- School of Chemical SciencesUniversity of AucklandPrivate Bag 92019Auckland1142New Zealand
| | - James D. Crowley
- Department of ChemistryUniversity of OtagoPO Box 56Dunedin9054New Zealand
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10
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Lisboa LS, Preston D, McAdam CJ, Wright LJ, Hartinger CG, Crowley JD. Heterotrimetallic Double Cavity Cages: Syntheses and Selective Guest Binding. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202201700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Lynn S. Lisboa
- Department of Chemistry University of Otago PO Box 56 Dunedin 9054 New Zealand
| | - Dan Preston
- Research School of Chemistry Australian National University Canberra ACT 0200 Australia
| | - C. John McAdam
- Department of Chemistry University of Otago PO Box 56 Dunedin 9054 New Zealand
| | - L. James Wright
- School of Chemical Sciences University of Auckland Private Bag 92019 Auckland 1142 New Zealand
| | - Christian G. Hartinger
- School of Chemical Sciences University of Auckland Private Bag 92019 Auckland 1142 New Zealand
| | - James D. Crowley
- Department of Chemistry University of Otago PO Box 56 Dunedin 9054 New Zealand
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11
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Wu K, Zhang B, Drechsler C, Holstein JJ, Clever GH. Rückgrat‐verknüpfte Liganden erhöhen die Vielfalt in heteroleptischen Koordinationskäfigen. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202012425] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Kai Wu
- Fakultät für Chemie und Chemische Biologie TU Dortmund Otto-Hahn Straße 6 44227 Dortmund Deutschland
| | - Bo Zhang
- Fakultät für Chemie und Chemische Biologie TU Dortmund Otto-Hahn Straße 6 44227 Dortmund Deutschland
| | - Christoph Drechsler
- Fakultät für Chemie und Chemische Biologie TU Dortmund Otto-Hahn Straße 6 44227 Dortmund Deutschland
| | - Julian J. Holstein
- Fakultät für Chemie und Chemische Biologie TU Dortmund Otto-Hahn Straße 6 44227 Dortmund Deutschland
| | - Guido H. Clever
- Fakultät für Chemie und Chemische Biologie TU Dortmund Otto-Hahn Straße 6 44227 Dortmund Deutschland
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12
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Cheng PM, Cai LX, Li SC, Hu SJ, Yan DN, Zhou LP, Sun QF. Guest-Reaction Driven Cage to Conjoined Twin-Cage Mitosis-Like Host Transformation. Angew Chem Int Ed Engl 2020; 59:23569-23573. [PMID: 32902925 DOI: 10.1002/anie.202011474] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Indexed: 12/12/2022]
Abstract
We report here a guest-reaction-induced mitosis-like host transformation from a known Pd4 L2 cage 1 to a conjoined Pd6 L3 twin-cage 2 featuring two separate cavities. The encapsulation of 1-hydroxymethyl-2-naphthol (G1), a known ortho-quinone methide (o-QMs) precursor, within the hydrophobic cavity of cage 1 is found crucial to realize the cage to twin-cage conversion. Confined G1 molecules within the nanocavity undergo self-coupling dimerization reaction to form 2,2'-dihydroxy-1,1'-dinaphthylmethane (G2) which then triggers the cage to twin-cage mitosis. The same conversion also proceeds, in a much faster rate, via the direct templation of G2, confirming the induced-fit transformation mechanism. The structure of the (G2)2 ⊂2 host-guest complex has been established by X-ray crystallographic study, where cis- to trans- conformational switch on one bridging ligand is revealed.
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Affiliation(s)
- Pei-Ming Cheng
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, PR China.,College of Chemistry and Material Science, Fujian Normal University, Fuzhou, 350007, PR China
| | - Li-Xuan Cai
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, PR China
| | - Shao-Chuan Li
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, PR China.,University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Shao-Jun Hu
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, PR China.,University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Dan-Ni Yan
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, PR China.,University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Li-Peng Zhou
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, PR China
| | - Qing-Fu Sun
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, PR China.,University of Chinese Academy of Sciences, Beijing, 100049, PR China
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13
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Wu K, Zhang B, Drechsler C, Holstein JJ, Clever GH. Backbone-Bridging Promotes Diversity in Heteroleptic Cages. Angew Chem Int Ed Engl 2020; 60:6403-6407. [PMID: 33113268 PMCID: PMC7986237 DOI: 10.1002/anie.202012425] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Indexed: 01/17/2023]
Abstract
The combination of shape-complementary bis-monodentate ligands LA and LB with PdII cations yields heteroleptic cages cis-[Pd2 LA 2 LB 2 ] by self-sorting. Herein, we report how such assemblies can be diversified by introduction of covalent backbone bridges between two LA units. Together with solvent and guest effects, the flexibility of these linkers can modulate nuclearity, topology, and number of cavities in a family of four structurally diverse assemblies. Ligand LA1 , with flexible linker, reacts in CH3 CN with its LB counterpart to a tetranuclear dimer D1. In DMSO, however, a trinuclear pseudo-tetrahedron T1 is formed. The product of LA2 , with rigid linker, looks similar to D1, but with a rotated ligand arrangement. In presence of an anionic guest, this dimer D2 transforms and a hexanuclear prismatic barrel P2 crystallizes. We demonstrate how controlling a ligand's coordination mode can trigger structural differentiation and increase complexity in metallo-supramolecular assembly.
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Affiliation(s)
- Kai Wu
- Faculty of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn Straße 6, 44227, Dortmund, Germany
| | - Bo Zhang
- Faculty of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn Straße 6, 44227, Dortmund, Germany
| | - Christoph Drechsler
- Faculty of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn Straße 6, 44227, Dortmund, Germany
| | - Julian J Holstein
- Faculty of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn Straße 6, 44227, Dortmund, Germany
| | - Guido H Clever
- Faculty of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn Straße 6, 44227, Dortmund, Germany
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14
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Cheng P, Cai L, Li S, Hu S, Yan D, Zhou L, Sun Q. Guest‐Reaction Driven Cage to Conjoined Twin‐Cage Mitosis‐Like Host Transformation. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202011474] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Pei‐Ming Cheng
- State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002 PR China
- College of Chemistry and Material Science Fujian Normal University Fuzhou 350007 PR China
| | - Li‐Xuan Cai
- State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002 PR China
| | - Shao‐Chuan Li
- State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002 PR China
- University of Chinese Academy of Sciences Beijing 100049 PR China
| | - Shao‐Jun Hu
- State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002 PR China
- University of Chinese Academy of Sciences Beijing 100049 PR China
| | - Dan‐Ni Yan
- State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002 PR China
- University of Chinese Academy of Sciences Beijing 100049 PR China
| | - Li‐Peng Zhou
- State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002 PR China
| | - Qing‐Fu Sun
- State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002 PR China
- University of Chinese Academy of Sciences Beijing 100049 PR China
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15
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O'Connor HM, Coletta M, Etcheverry-Berríos A, Nichol GS, Brechin EK, Lusby PJ. Kinetic selection of Pd 4L 2 metallocyclic and Pd 6L 3 trigonal prismatic assemblies. Chem Commun (Camb) 2020; 56:11799-11802. [PMID: 33021303 DOI: 10.1039/d0cc05311b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The self-assembly of Pd4L2 metallocylcic and Pd6L3 trigonal prismatic assemblies are described. The selection of one species over the other has been achieved by careful choice of ancilliary ligands, which switch the dynamics of the Pd-pyridine bonds such that a highly unusual and distorted smaller assembly can be kinetically trapped en route to the more energetically favourable larger species. Both assemblies provide promise as easy to access multicavity reaction vessels.
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Affiliation(s)
- Helen M O'Connor
- EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, Edinburgh, EH9 3FJ, UK.
| | - Marco Coletta
- EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, Edinburgh, EH9 3FJ, UK.
| | - Alvaro Etcheverry-Berríos
- EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, Edinburgh, EH9 3FJ, UK.
| | - Gary S Nichol
- EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, Edinburgh, EH9 3FJ, UK.
| | - Euan K Brechin
- EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, Edinburgh, EH9 3FJ, UK.
| | - Paul J Lusby
- EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, Edinburgh, EH9 3FJ, UK.
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16
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Martin H, Somers T, Dwyer M, Robson R, Pfeffer FM, Bjornsson R, Krämer T, Kavanagh K, Velasco-Torrijos T. Scaffold diversity for enhanced activity of glycosylated inhibitors of fungal adhesion. RSC Med Chem 2020; 11:1386-1401. [PMID: 34095846 DOI: 10.1039/d0md00224k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 08/11/2020] [Indexed: 12/20/2022] Open
Abstract
Candida albicans is one of the most prevalent fungal pathogens involved in hospital acquired infections. It binds to glycans at the surface of epithelial cells and initiates infection. This process can be blocked by synthetic carbohydrates that mimic the structure of cell surface glycans. Herein we report the evaluation of a series of divalent glycosides featuring aromatic (benzene, squaramide) and bicyclic aliphatic (norbornene) scaffolds, with the latter being the first examples of their kind as small molecule anti-adhesion glycoconjugates. Galactosides 1 and 6, built on an aromatic core, were most efficient inhibitors of adhesion of C. albicans to buccal epithelial cells, displacing up to 36% and 48%, respectively, of yeast already attached to epithelial cells at 138 μM. Remarkably, cis-endo-norbornene 21 performed comparably to benzene-core derivatives. Conformational analysis reveals a preference for compounds 1 and 21 to adopt folded conformations. These results highlight the potential of norbornenes as a new class of aliphatic scaffolds for the synthesis of anti-adhesion compounds.
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Affiliation(s)
- Harlei Martin
- Department of Chemistry, Maynooth University Maynooth Co. Kildare Ireland
| | - Tara Somers
- Department of Biology, Maynooth University Maynooth Co. Kildare Ireland
| | - Mathew Dwyer
- Department of Biology, Maynooth University Maynooth Co. Kildare Ireland
| | - Ryan Robson
- School of Life and Environmental Sciences, Deakin University Geelong Victoria 3217 Australia
| | - Frederick M Pfeffer
- School of Life and Environmental Sciences, Deakin University Geelong Victoria 3217 Australia
| | - Ragnar Bjornsson
- Department of Inorganic Spectroscopy, Max Planck Institute for Chemical Energy Conversion Stiftstrasse 34-36 45470 Mülheim an der Ruhr Germany
| | - Tobias Krämer
- Department of Chemistry, Maynooth University Maynooth Co. Kildare Ireland .,The Hamilton Institute, Maynooth University Maynooth Co. Kildare Ireland
| | - Kevin Kavanagh
- Department of Biology, Maynooth University Maynooth Co. Kildare Ireland.,The Kathleen Lonsdale Institute for Human Health Research, Maynooth University Maynooth Co. Kildare Ireland
| | - Trinidad Velasco-Torrijos
- Department of Chemistry, Maynooth University Maynooth Co. Kildare Ireland .,The Kathleen Lonsdale Institute for Human Health Research, Maynooth University Maynooth Co. Kildare Ireland
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17
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Ito K, Nishioka T, Akita M, Kuzume A, Yamamoto K, Yoshizawa M. An aromatic micelle with bent pentacene-based panels: encapsulation of perylene bisimide dyes and graphene nanosheets. Chem Sci 2020; 11:6752-6757. [PMID: 32953033 PMCID: PMC7472825 DOI: 10.1039/d0sc01748e] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Accepted: 06/04/2020] [Indexed: 12/15/2022] Open
Abstract
We herein report the quantitative formation of a new aromatic micelle from bent pentacene-based amphiphiles in water. Upon encapsulation, perylene bisimide dyes form a parallel stacked dimer and graphene nanosheets comprise few layer sheets with small lateral size.
For exploitation of a new class of aromatic micelles, we synthesized a bent pentacene-based amphiphilic molecule through Diels–Alder reaction. The amphiphiles bearing two trimethylammonium tethers assemble into a spherical aromatic micelle, with an average core diameter of 1.5 nm, in water at room temperature. The new aromatic micelle efficiently encapsulates perylene bisimide (PBI) dyes and graphene nanosheets (GNS) in water. The encapsulated PBI dyes form a parallel stacked dimer, exhibiting characteristic absorption and emission bands. In addition, the encapsulated GNS are composed of few-layer graphene sheets with an average lateral size of ∼7 nm, as confirmed by Raman spectroscopy. The resultant, aqueous host–guest complexes are stable even after three weeks in water under ambient conditions.
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Affiliation(s)
- Kenta Ito
- Laboratory for Chemistry and Life Science , Institute of Innovative Research , Tokyo Institute of Technology , 4259 Nagatsuta, Midori-ku , Yokohama 226-8503 , Japan .
| | - Tomoya Nishioka
- Laboratory for Chemistry and Life Science , Institute of Innovative Research , Tokyo Institute of Technology , 4259 Nagatsuta, Midori-ku , Yokohama 226-8503 , Japan .
| | - Munetaka Akita
- Laboratory for Chemistry and Life Science , Institute of Innovative Research , Tokyo Institute of Technology , 4259 Nagatsuta, Midori-ku , Yokohama 226-8503 , Japan .
| | - Akiyoshi Kuzume
- Laboratory for Chemistry and Life Science , Institute of Innovative Research , Tokyo Institute of Technology , 4259 Nagatsuta, Midori-ku , Yokohama 226-8503 , Japan .
| | - Kimihisa Yamamoto
- Laboratory for Chemistry and Life Science , Institute of Innovative Research , Tokyo Institute of Technology , 4259 Nagatsuta, Midori-ku , Yokohama 226-8503 , Japan .
| | - Michito Yoshizawa
- Laboratory for Chemistry and Life Science , Institute of Innovative Research , Tokyo Institute of Technology , 4259 Nagatsuta, Midori-ku , Yokohama 226-8503 , Japan .
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18
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Slyusarchuk VD, Kruger PE, Hawes CS. Cyclic Aliphatic Hydrocarbons as Linkers in Metal‐Organic Frameworks: New Frontiers for Ligand Design. Chempluschem 2020; 85:845-854. [DOI: 10.1002/cplu.202000206] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 04/15/2020] [Indexed: 12/14/2022]
Affiliation(s)
| | - Paul E. Kruger
- MacDiarmid Institute for Advanced Materials and NanotechnologySchool of Physical and Chemical SciencesUniversity of Canterbury Christchurch 8140 New Zealand
| | - Chris S. Hawes
- School of Chemical and Physical SciencesKeele University Keele ST5 5BG United Kingdom
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19
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Lewis JEM, Crowley JD. Metallo‐Supramolecular Self‐Assembly with Reduced‐Symmetry Ligands. Chempluschem 2020; 85:815-827. [DOI: 10.1002/cplu.202000153] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Revised: 04/10/2020] [Indexed: 12/20/2022]
Affiliation(s)
- James E. M. Lewis
- Department of ChemistryImperial College LondonMolecular Sciences Research Hub 80 Wood Lane London W12 0BZ United Kingdom
| | - James. D. Crowley
- Department of ChemistryUniversity of Otago PO Box 56 Dunedin 9054 New Zealand
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20
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Abstract
A self-assembled coordination cage usually possesses one well-defined three-dimensional (3D) cavity whereas infinite number of 3D-cavities are crafted in a designer metal-organic framework. Construction of a discrete coordination cage possessing multiple number of 3D-cavities is a challenging task. Here we report the peripheral decoration of a trinuclear [Pd3L6] core with one, two and three units of a [Pd2L4] entity for the preparation of multi-3D-cavity conjoined-cages of [Pd4(La)2(Lb)4], [Pd5(Lb)4(Lc)2] and [Pd6(Lc)6] formulations, respectively. Formation of the tetranuclear and pentanuclear complexes is attributed to the favorable integrative self-sorting of the participating components. Cage-fusion reactions and ligand-displacement-induced cage-to-cage transformation reactions are carried out using appropriately chosen ligand components and cages prepared in this work. The smaller [Pd2L4] cavity selectively binds one unit of NO3−, F−, Cl− or Br− while the larger [Pd3L6] cavity accommodates up to four DMSO molecules. Designing aspects of our conjoined-cages possess enough potential to inspire construction of exotic molecular architectures. Developing simple routes for construction of multi-compartmental cages is a compelling and challenging task. Here, the authors report modular construction of multi-3D-cavity cages featuring one, two or three units of a [Pd2L4] entity conjoined with a [Pd3L6] core.
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21
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Sarada G, Kim A, Kim D, Jung OS. Diverse anion exchange of pliable [X 2@Pd 3L 4] 4+ double cages: a molecular ruler for recognition of polyatomic anions. Dalton Trans 2020; 49:6183-6190. [PMID: 32301465 DOI: 10.1039/d0dt01027h] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Reaction of Pd(BF4)2 with L (L = bis(pyridin-3-yl-propyl)pyridine-3,5-dicarboxylate) in the 1 : 2 mole ratio gives rise to a spiro-type [PdL2]·(BF4)2·2C6H6·2CH3CN, and further self-assembly of [PdL2]·(BF4)2·2C6H6·2CH3CN with Pd(NO3)2 in the 2 : 1 mole ratio in Me2SO at 90 °C produces a uniquely pliable double cage of [(NO3)2(H2O)2@Pd3L4](BF4)4·6C3H7NO. Both the encapsulated NO3- and the outside BF4- anions are exchanged by X- to form [(X)2@Pd3L4](X')4 (X- = PF6-, ClO4-, and/or NO3-; X'- = BF4-, PF6-, ClO4-, and NO3-) with all-inclusive pure or mixed anions. The pliable and characteristic properties of the double cages were confirmed by anion exchange of the nestled or outside anions in the present study. This system can be used as a ruler for recognition of ubiquitous polyatomic anions.
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Affiliation(s)
- Ganguri Sarada
- Department of Chemistry, Pusan National University, Busan 46241, Republic of Korea.
| | - Ahreum Kim
- Department of Chemistry, Pusan National University, Busan 46241, Republic of Korea.
| | - Dongwon Kim
- Department of Chemistry, Pusan National University, Busan 46241, Republic of Korea.
| | - Ok-Sang Jung
- Department of Chemistry, Pusan National University, Busan 46241, Republic of Korea.
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22
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Robson RN, Hay BP, Pfeffer FM. To Cooperate or Not: The Role of Central Functionality in Bisthiourea [6]polynorbornane Hosts. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901352] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ryan N. Robson
- School of Life and Environmental Sciences Deakin University Pigdons road 3217 Waurn Ponds VIC. Australia
- Department or Chemistry New York University 100 Washington Square East 10003 New York NY. USA
| | - Benjamin P. Hay
- Supramolecular Design Institute 127 Chestnut Hill Rd 37830 Oak Ridge TN. USA
| | - Frederick M. Pfeffer
- School of Life and Environmental Sciences Deakin University Pigdons road 3217 Waurn Ponds VIC. Australia
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23
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Perretti MD, Pérez-Márquez LA, García-Rodríguez R, Carrillo R. Building Covalent Molecular Capsules by Thiol-Michael Addition Click Reaction. J Org Chem 2018; 84:840-850. [DOI: 10.1021/acs.joc.8b02677] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Marcelle D. Perretti
- Instituto Universitario de Bio-Orgánica “Antonio González” (IUBO), Universidad de La Laguna, Avda. Astrofísico Fco. Sánchez 2, 38200 La Laguna, Tenerife, Spain
| | - Lidia A. Pérez-Márquez
- Instituto Universitario de Bio-Orgánica “Antonio González” (IUBO), Universidad de La Laguna, Avda. Astrofísico Fco. Sánchez 2, 38200 La Laguna, Tenerife, Spain
| | - Raúl García-Rodríguez
- GIR MIOMeT-IU Cinquima-Química Inorgánica, Facultad de Ciencias, Campus Miguel Delibes, Universidad de Valladolid, 47011 Valladolid, Spain
| | - Romen Carrillo
- Instituto Universitario de Bio-Orgánica “Antonio González” (IUBO), Universidad de La Laguna, Avda. Astrofísico Fco. Sánchez 2, 38200 La Laguna, Tenerife, Spain
- Instituto de Productos Naturales y Agrobiología (IPNA), Consejo Superior de Investigaciones Científicas (CSIC), Avda. Astrofísico Fco. Sánchez 3, 38206 La Laguna, Tenerife, Spain
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24
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Murphy RB, Pham DT, White JM, Lincoln SF, Johnston MR. Molecular tweezers with a rotationally restricted linker and freely rotating porphyrin moieties. Org Biomol Chem 2018; 16:6206-6223. [PMID: 30106402 DOI: 10.1039/c8ob00944a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The effect of the degree of conformational rigidity and/or flexibility on preorganisation in artificial molecular receptors continues to be actively explored by supramolecular chemists. This work describes a bis-porphyrin architecture, linked via a rigid polycyclic backbone, in which a sterically bulky 2,3,5,6-tetramethylphenyl diimide core restricts rotation to afford two non-interconvertible tweezer conformations; syn- and anti-. After separation, the host-guest chemistry of each conformation was studied independently. The difference in host geometry allows only the syn-conformation to form a strong 1 : 1 bis-porphyrin complex with the diamino ligand 1,4-diazabicyclo[2.2.2]octane (DABCO) (K11 = 1.25 × 108 M-1), with the anti-conformation adopting a 2 : 2 sandwich complex with DABCO (K22 = 5.57 × 1017 M-3).
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Affiliation(s)
- Rhys B Murphy
- Flinders Centre for NanoScale Science and Technology, College of Science and Engineering, Flinders University, Bedford Park, Adelaide, Australia.
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25
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Jansze SM, Ortiz D, Fadaei Tirani F, Scopelliti R, Menin L, Severin K. Inflating face-capped Pd 6L 8 coordination cages. Chem Commun (Camb) 2018; 54:9529-9532. [PMID: 30094441 DOI: 10.1039/c8cc04870c] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Tritopic metalloligands were used to form two Pd6L8-type coordination cages. With molecular weights of more than 15 kDa and PdPd distances of up to 4.2 nm, these complexes are among the largest palladium cages described to date.
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Affiliation(s)
- Suzanne M Jansze
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.
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26
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Zhu R, Regeni I, Holstein JJ, Dittrich B, Simon M, Prévost S, Gradzielski M, Clever GH. Catenation and Aggregation of Multi-Cavity Coordination Cages. Angew Chem Int Ed Engl 2018; 57:13652-13656. [DOI: 10.1002/anie.201806047] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Rongmei Zhu
- Faculty of Chemistry and Chemical Biology; TU Dortmund University; Otto-Hahn-Strasse 6 44227 Dortmund Germany
- Current affiliation: School of Chemistry and Chemical Engineering; Yangzhou University; Yangzhou 225002 Jiangsu PR China
| | - Irene Regeni
- Faculty of Chemistry and Chemical Biology; TU Dortmund University; Otto-Hahn-Strasse 6 44227 Dortmund Germany
| | - Julian J. Holstein
- Faculty of Chemistry and Chemical Biology; TU Dortmund University; Otto-Hahn-Strasse 6 44227 Dortmund Germany
| | - Birger Dittrich
- Institute for Inorganic Chemistry; Heinrich-Heine University Düsseldorf; Universitätsstrasse 1 40225 Düsseldorf Germany
| | - Miriam Simon
- Stranski-Laboratorium für Physikalische und Theoretische Chemie; Institut für Chemie; Technische Universität Berlin; 10623 Berlin Germany
| | - Sylvain Prévost
- Institut Max von Laue-Paul Langevin (ILL); 71 avenue des Martyrs 38042 Grenoble France
| | - Michael Gradzielski
- Stranski-Laboratorium für Physikalische und Theoretische Chemie; Institut für Chemie; Technische Universität Berlin; 10623 Berlin Germany
| | - Guido H. Clever
- Faculty of Chemistry and Chemical Biology; TU Dortmund University; Otto-Hahn-Strasse 6 44227 Dortmund Germany
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27
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Zhu R, Regeni I, Holstein JJ, Dittrich B, Simon M, Prévost S, Gradzielski M, Clever GH. Catenierung und Aggregation von Koordinationskäfigen mit mehreren Kavitäten. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201806047] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Rongmei Zhu
- Fakultät für Chemie und Chemische Biologie; TU Dortmund; Otto-Hahn-Straße 6 44227 Dortmund Deutschland
- Derzeitige Zugehörigkeit: School of Chemistry and Chemical Engineering; Yangzhou University; Jiangsu VR China
| | - Irene Regeni
- Fakultät für Chemie und Chemische Biologie; TU Dortmund; Otto-Hahn-Straße 6 44227 Dortmund Deutschland
| | - Julian J. Holstein
- Fakultät für Chemie und Chemische Biologie; TU Dortmund; Otto-Hahn-Straße 6 44227 Dortmund Deutschland
| | - Birger Dittrich
- Institut für Anorganische Chemie; Heinrich-Heine Universität Düsseldorf; Deutschland
| | - Miriam Simon
- Stranski-Laboratorium für Physikalische und Theoretische Chemie; Institut für Chemie; Technische Universität Berlin; Deutschland
| | - Sylvain Prévost
- Institut Max von Laue - Paul Langevin (ILL); 71 Avenue des Martyrs Grenoble Frankreich
| | - Michael Gradzielski
- Stranski-Laboratorium für Physikalische und Theoretische Chemie; Institut für Chemie; Technische Universität Berlin; Deutschland
| | - Guido H. Clever
- Fakultät für Chemie und Chemische Biologie; TU Dortmund; Otto-Hahn-Straße 6 44227 Dortmund Deutschland
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28
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Engstrom JR, Savyasachi AJ, Parhizkar M, Sutti A, Hawes CS, White JM, Gunnlaugsson T, Pfeffer FM. Norbornene chaotropic salts as low molecular mass ionic organogelators (LMIOGs). Chem Sci 2018; 9:5233-5241. [PMID: 29997878 PMCID: PMC6001280 DOI: 10.1039/c8sc01798k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Accepted: 05/15/2018] [Indexed: 01/23/2023] Open
Abstract
Phenylalanine functionalised norbornene (9:Na) functions as a potent, low molecular-mass (MW = 333 Da) ionic organogelator with a minimum gelating concentration of 0.5 wt% in THF, i-PrOH, 1,4-dioxane and n-BuOH. Fibrous crystals form in the gel and X-ray crystallography identified a cation mediated helical assembly process controlled by the chirality of the phenylalanine. In addition to excellent gelating properties 9:Na readily forms aqueous biphasic and triphasic systems.
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Affiliation(s)
- Jordan R Engstrom
- School of Life and Environmental Sciences , Deakin University , Waurn Ponds , Victoria 3216 , Australia .
| | - Aramballi J Savyasachi
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI) , Trinity College Dublin , The University of Dublin , Dublin 2 , Ireland .
| | - Marzieh Parhizkar
- Institute for Frontier Materials , Deakin University , Waurn Ponds , Victoria 3216 , Australia .
| | - Alessandra Sutti
- Institute for Frontier Materials , Deakin University , Waurn Ponds , Victoria 3216 , Australia .
| | - Chris S Hawes
- School of Chemical and Physical Sciences , Keele University , Staffordshire , ST5 5BG , UK
| | - Jonathan M White
- Bio21 Institute , School of Chemistry , University of Melbourne , Parkville , 3010 , Australia
| | - Thorfinnur Gunnlaugsson
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI) , Trinity College Dublin , The University of Dublin , Dublin 2 , Ireland .
| | - Frederick M Pfeffer
- School of Life and Environmental Sciences , Deakin University , Waurn Ponds , Victoria 3216 , Australia .
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29
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Krick M, Holstein J, Würtele C, Clever GH. Endohedral dynamics of push-pull rotor-functionalized cages. Chem Commun (Camb) 2018; 52:10411-4. [PMID: 27484435 DOI: 10.1039/c6cc04155h] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of [Pd2L4] coordination cages featuring endohedral functionalities in central backbone positions was synthesized. Although attached via C[double bond, length as m-dash]C double bonds, the substituents behave as molecular rotors. This is explained by their pronounced donor-acceptor character which lowers rotational barriers and allows for electronic control over the spinning rates inside the cage. The dynamic behaviour of the free ligands, assembled cages and host-guest complexes is compared with the aid of NMR experiments, X-ray structure analysis and molecular modelling.
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Affiliation(s)
- Marcel Krick
- Faculty for Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn Str. 6, 44227 Dortmund, Germany.
| | - Julian Holstein
- Faculty for Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn Str. 6, 44227 Dortmund, Germany.
| | - Christian Würtele
- Institute for Inorganic Chemistry, Georg-August-University Göttingen, Tammannstr. 4, 37077 Göttingen, Germany
| | - Guido H Clever
- Faculty for Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn Str. 6, 44227 Dortmund, Germany.
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30
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Clever GH, Punt P. Cation-Anion Arrangement Patterns in Self-Assembled Pd 2L 4 and Pd 4L 8 Coordination Cages. Acc Chem Res 2017; 50:2233-2243. [PMID: 28817257 DOI: 10.1021/acs.accounts.7b00231] [Citation(s) in RCA: 178] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Compounds featuring one-dimensional regular arrangements of stacked metal complexes and alternating [cation-anion]∞ sequences have raised considerable interest owing to their peculiar electronic and optical properties as well as guest inclusion capabilities. While traditional ways to realize these structural motifs rely on crystalline compounds, exclusively existing in the solid state, recent progress in the area of metal-mediated supramolecular self-assembly allows for the rational synthesis of structurally well-defined short stretches of stacked metal complexes and cation-anion arrangements. Therefore, metal cations, counteranions, and suitably designed organic bridges are allowed to self-assemble in solution. While the bridges can be designed as cross-linkers to yield extended two- or three-dimensional networks such as layered materials, metal-organic frameworks (MOFs), or porous coordination polymers (PCPs), they can also be tailored to lead to discrete nanoscopic objects. Supramolecular helicates, grids, and knots belong to this class of compounds, and a particularly interesting subfamily are coordination cages and capsules, which possess nanosized cavities with the ability to encapsulate guest molecules. Here, we focus on coordination cages consisting of two or more square-planar Pd(II) or Pt(II) metal cations, bridged by banana-shaped bis-monodentate pyridyl ligands that encapsulate various guest molecules, usually anions, in their cavities. Monoanions as well as dianions with localized or delocalized charges can be bound with remarkable complementarity between cage and guest in terms of size and shape. We show how dimerization of the prototypical [Pd2L4] cages into their interpenetrated dimers [Pd4L8] leads to an increase in cavity number from one to three while the cavity volume decreases. Usually, all three pockets of these double cages are filled with monoanions such as BF4- or Cl-, thus leading to well-defined linear [Pd-anion]3Pd stacks, as observed by X-ray studies. The ligand-based mechanical coupling of the linearly aligned cavities leads to interesting effects concerning guest encapsulation cooperativity, such as allosteric binding and triggered sequential uptake. While most of the so far reported coordination cages consist of only a single type of ligand, recent advances in rational assembly strategies allow for high-yielding syntheses of structurally defined multicomponent architectures by integrative self-sorting mechanisms. One family of heteroleptic [Pd2L2L'2] cages whose formation is based on shape-complementarity between two different ligands, L and L', is introduced. Furthermore, the implementation of ligand-based functions such as redox activity, photochromic behavior, specific binding sites, chirality, and catalytic activity allows us to study systems with properties far beyond basic structural features. We showcase selected examples of self-assembled cages whose guest uptake or even overall structural integrity is reversibly switched by light or small molecules with potential application in stimuli responsive materials (e.g., for sequestration of pollutants or stabilization of reactive compounds) up to functional nanosystems (e.g., diagnostic devices or supramolecular catalysts) and molecular machines.
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Affiliation(s)
- Guido H. Clever
- Department of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn-Str. 6, 44227 Dortmund, Germany
| | - Philip Punt
- Department of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn-Str. 6, 44227 Dortmund, Germany
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31
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Vasdev RAS, Preston D, Crowley JD. Multicavity Metallosupramolecular Architectures. Chem Asian J 2017; 12:2513-2523. [PMID: 28755432 DOI: 10.1002/asia.201700948] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Indexed: 12/22/2022]
Abstract
Discrete metallosupramolecular systems are often macrocyclic or cage-like architectures with an accessible internal cavity. Guest molecules can reside within these cavities and much of the interest in these systems is derived from these fascinating host-guest interactions. A range of potential applications stem from the ability of these metallosupramolecular architectures to encapsulate guests. These applications include catalysis or acting as molecular reaction flasks, the molecular scavenging of pollutants, storage of reactive species, and drug delivery. Multicavity metallosupramolecular architectures combine the ability of large hollow assemblies to bind multiple guests concurrently with the binding specificity associated with small cages. A variety of different approaches to generating separate compartments within a single metallosupramolecular assembly have emerged. These include interpenetrated cages, cages with polytopic ligands that have a long backbone, and molecules that have two or more clefts. This review examines these approaches, and highlights key contributions to the field.
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Affiliation(s)
- Roan A S Vasdev
- Department of Chemistry, University of Otago, PO Box 56, Dunedin, New Zealand
| | - Dan Preston
- Department of Chemistry, University of Otago, PO Box 56, Dunedin, New Zealand
| | - James D Crowley
- Department of Chemistry, University of Otago, PO Box 56, Dunedin, New Zealand
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32
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Abstract
A pentanuclear coordination complex assembled from any palladium(II) component and non-chelating ligands is hitherto unreported. The pentanuclear complex [Pd5 (L1)5 (L2)5 ](BF4 )10 , 1 reported here was prepared by the spontaneous complexation of [Pd(DMSO)4 ](BF4 )2 with the non-chelating bidentate ligands 1,4-phenylenebis(methylene) diisonicotinate, L1 and 4,4'-bipyridine, L2 in a one-pot method at room temperature. The planar polycyclic complex 1 with outer diameters of ≈3 nm is termed as a "molecular star" owing to its resemblance with a pentagram shape. Interim paths leading to the star were also probed to decipher related dynamics of the system.
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Affiliation(s)
- Soumyakanta Prusty
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Kohei Yazaki
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India.,Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, 226-8503, Japan
| | - Michito Yoshizawa
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, 226-8503, Japan
| | - Dillip Kumar Chand
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India
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33
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Yazaki K, Akita M, Prusty S, Chand DK, Kikuchi T, Sato H, Yoshizawa M. Polyaromatic molecular peanuts. Nat Commun 2017; 8:15914. [PMID: 28656977 PMCID: PMC5493752 DOI: 10.1038/ncomms15914] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Accepted: 05/12/2017] [Indexed: 12/24/2022] Open
Abstract
Mimicking biological structures such as fruits and seeds using molecules and molecular assemblies is a great synthetic challenge. Here we report peanut-shaped nanostructures comprising two fullerene molecules fully surrounded by a dumbbell-like polyaromatic shell. The shell derives from a molecular double capsule composed of four W-shaped polyaromatic ligands and three metal ions. Mixing the double capsule with various fullerenes (that is, C60, C70 and Sc3N@C80) gives rise to the artificial peanuts with lengths of ∼3 nm in quantitative yields through the release of the single metal ion. The rational use of both metal-ligand coordination bonds and aromatic-aromatic π-stacking interactions as orthogonal chemical glue is essential for the facile preparation of the multicomponent, biomimetic nanoarchitectures.
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Affiliation(s)
- Kohei Yazaki
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | - Munetaka Akita
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Soumyakanta Prusty
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | - Dillip Kumar Chand
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | - Takashi Kikuchi
- Rigaku Corporation, 3-9-12 Matsubaracho, Akishima, Tokyo 196-8666, Japan
| | - Hiroyasu Sato
- Rigaku Corporation, 3-9-12 Matsubaracho, Akishima, Tokyo 196-8666, Japan
| | - Michito Yoshizawa
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
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Shi Y, Jiang J, Ma L, Wang J, Li W. Synthesis of 4,4′-bipentacyclo[5.4.0.0 2,6 .0 3,10 .0 5,9 ]undecane. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.02.045] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Preston D, Lewis JEM, Crowley JD. Multicavity [PdnL4]2n+ Cages with Controlled Segregated Binding of Different Guests. J Am Chem Soc 2017; 139:2379-2386. [DOI: 10.1021/jacs.6b11982] [Citation(s) in RCA: 103] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Dan Preston
- Department
of Chemistry, University of Otago, P.O. Box 56, Dunedin, New Zealand
| | - James E. M. Lewis
- Department
of Chemistry, University of Otago, P.O. Box 56, Dunedin, New Zealand
| | - James D. Crowley
- Department
of Chemistry, University of Otago, P.O. Box 56, Dunedin, New Zealand
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Frank M, Johnstone MD, Clever GH. Interpenetrated Cage Structures. Chemistry 2016; 22:14104-25. [DOI: 10.1002/chem.201601752] [Citation(s) in RCA: 106] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Indexed: 01/08/2023]
Affiliation(s)
- Marina Frank
- Institute for Inorganic Chemistry; Georg-August University Göttingen; Tammannstrasse 4 37077 Göttingen Germany
| | - Mark D. Johnstone
- Department of Chemistry and Chemical Biology; TU Dortmund University; Otto-Hahn-Strasse 6 44227 Dortmund Germany
| | - Guido H. Clever
- Department of Chemistry and Chemical Biology; TU Dortmund University; Otto-Hahn-Strasse 6 44227 Dortmund Germany
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Johnstone MD, Schwarze EK, Ahrens J, Schwarzer D, Holstein JJ, Dittrich B, Pfeffer FM, Clever GH. Desymmetrization of an Octahedral Coordination Complex Inside a Self-Assembled Exoskeleton. Chemistry 2016; 22:10791-5. [DOI: 10.1002/chem.201602497] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Indexed: 01/04/2023]
Affiliation(s)
- Mark D. Johnstone
- Research Centre for Chemistry and Biotechnology, School of Life and Environmental Sciences; Deakin University; Geelong Victoria 3217 Australia
- Institute for Inorganic Chemistry; Georg-August University Göttingen; Tammannstr. 4 37077 Göttingen Germany
- Faculty of Chemistry and Chemical Biology; TU Dortmund; Otto-Hahn-Str. 6 44227 Dortmund Germany
| | - Eike K. Schwarze
- Institute for Inorganic Chemistry; Georg-August University Göttingen; Tammannstr. 4 37077 Göttingen Germany
| | - Jennifer Ahrens
- Max-Planck-Institute of Biophysical Chemistry; Am Faßberg 11 37077 Göttingen Germany
| | - Dirk Schwarzer
- Max-Planck-Institute of Biophysical Chemistry; Am Faßberg 11 37077 Göttingen Germany
| | - Julian J. Holstein
- Faculty of Chemistry and Chemical Biology; TU Dortmund; Otto-Hahn-Str. 6 44227 Dortmund Germany
| | - Birger Dittrich
- Institute for Inorganic and Structural Chemistry; Heinrich-Heine-Universität Düsseldorf; Universitätsstr. 1 40225 Düsseldorf Germany
| | - Frederick M. Pfeffer
- Research Centre for Chemistry and Biotechnology, School of Life and Environmental Sciences; Deakin University; Geelong Victoria 3217 Australia
| | - Guido H. Clever
- Institute for Inorganic Chemistry; Georg-August University Göttingen; Tammannstr. 4 37077 Göttingen Germany
- Faculty of Chemistry and Chemical Biology; TU Dortmund; Otto-Hahn-Str. 6 44227 Dortmund Germany
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38
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Bandi S, Samantray S, Chakravarthy RD, Pal AK, Hanan GS, Chand DK. Double-Decker Coordination Cages. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600259] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Sreenivasulu Bandi
- Department of Chemistry; Indian Institute of Technology Madras; 600036 Chennai India
| | - Sagarika Samantray
- Department of Chemistry; Indian Institute of Technology Madras; 600036 Chennai India
| | | | - Amlan K. Pal
- Department of Chemistry; University of Montreal; Montreal Canada
| | - Garry S. Hanan
- Department of Chemistry; University of Montreal; Montreal Canada
| | - Dillip Kumar Chand
- Department of Chemistry; Indian Institute of Technology Madras; 600036 Chennai India
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Payne DT, Fossey JS, Elmes RBP. Catalysis and Sensing for our Environment (CASE2015) and the Supramolecular Chemistry Ireland Meeting (SCI 2015): Dublin and Maynooth, Ireland. 8th–11th July. Supramol Chem 2016. [DOI: 10.1080/10610278.2016.1150595] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Daniel T. Payne
- School of Chemistry, University of Birmingham, Birmingham, UK
| | - John S. Fossey
- School of Chemistry, University of Birmingham, Birmingham, UK
| | - Robert B. P. Elmes
- Department of Chemistry, Maynooth University, National University of Ireland, Maynooth, Ireland
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40
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Robson RN, Pfeffer FM. Using steric bulk for selective recognition; blocking the binding site to differentiate guests. Chem Commun (Camb) 2016; 52:8719-21. [DOI: 10.1039/c6cc04549a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Amenable to bendable: blocking the binding cleft enhances selectivity for flexible guests.
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Affiliation(s)
- Ryan N. Robson
- Centre for Chemistry and Biotechnology
- School of Life and Environmental Sciences
- Deakin University
- Waurn Ponds
- Australia
| | - Frederick M. Pfeffer
- Centre for Chemistry and Biotechnology
- School of Life and Environmental Sciences
- Deakin University
- Waurn Ponds
- Australia
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41
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Liu X, Weinert ZJ, Sharafi M, Liao C, Li J, Schneebeli ST. Regulating Molecular Recognition with C-Shaped Strips Attained by Chirality-Assisted Synthesis. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201506793] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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42
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Liu X, Weinert ZJ, Sharafi M, Liao C, Li J, Schneebeli ST. Regulating Molecular Recognition with C-Shaped Strips Attained by Chirality-Assisted Synthesis. Angew Chem Int Ed Engl 2015; 54:12772-6. [DOI: 10.1002/anie.201506793] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Indexed: 12/15/2022]
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43
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Camps P, Lozano D, Font-Bardia M. Synthesis of Polycycles by Single or Double Domino Nucleophilic Substitution/Diels-Alder Reaction. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500601] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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44
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Jayamurugan G, Roberts DA, Ronson TK, Nitschke JR. SelectiveEndoandExoBinding of Mono- and Ditopic Ligands to a Rhomboidal Diporphyrin Prism. Angew Chem Int Ed Engl 2015; 54:7539-43. [DOI: 10.1002/anie.201501359] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Revised: 04/14/2015] [Indexed: 11/06/2022]
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45
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Jayamurugan G, Roberts DA, Ronson TK, Nitschke JR. SelectiveEndoandExoBinding of Mono- and Ditopic Ligands to a Rhomboidal Diporphyrin Prism. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201501359] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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46
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Johnstone MD, Pfeffer FM. Rapid domino [3+2] cycloaddition, [4+2] cycloreversion, ring-opening and aromatisation of a fused oxanorbornane substrate. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.04.025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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47
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Cook TR, Stang PJ. Recent Developments in the Preparation and Chemistry of Metallacycles and Metallacages via Coordination. Chem Rev 2015; 115:7001-45. [DOI: 10.1021/cr5005666] [Citation(s) in RCA: 1299] [Impact Index Per Article: 144.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Timothy R. Cook
- Department
of Chemistry, University at Buffalo, State University of New York, 359 Natural Sciences Complex, Buffalo, New York 14260, United States
| | - Peter J. Stang
- Department
of Chemistry, University of Utah, 315 S. 1400 E. Room 2020, Salt Lake City, Utah 84112, United States
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48
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Ganta S, Chand DK. Nanoscale metallogel via self-assembly of self-assembled trinuclear coordination rings: multi-stimuli-responsive soft materials. Dalton Trans 2015; 44:15181-8. [DOI: 10.1039/c4dt03715d] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A multi-stimuli-responsive metallogel is obtained by the self-assembly of an already self-assembled trinuclear palladium(ii) based coordination ring of the rare M3L6 composition.
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49
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Rawal A, Hook JM, Robson RN, Gunzelmann D, Pfeffer FM, O'Dell LA. Solid-state NMR as a probe of anion binding: molecular dynamics and associations in a [5]polynorbornane bisurea host complexed with terephthalate. Phys Chem Chem Phys 2015; 17:22195-203. [DOI: 10.1039/c5cp03628c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A suite of solid-state NMR experiments is used to study a supramolecular complex consisting of a [5]polynorbornane bisurea host and terephthalate dianion guest, revealing information on the dynamics of both the host and guest species.
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Affiliation(s)
- Aditya Rawal
- Mark Wainwright Analytical Centre
- University of New South Wales
- NSW 2052
- Australia
| | - James M. Hook
- Mark Wainwright Analytical Centre
- University of New South Wales
- NSW 2052
- Australia
| | - Ryan N. Robson
- Centre for Chemistry and Biotechnology
- School of Life and Environmental Sciences
- Deakin University
- Victoria 3220
- Australia
| | - Daniel Gunzelmann
- Institute for Frontier Materials
- Deakin University
- Victoria 3220
- Australia
| | - Frederick M. Pfeffer
- Centre for Chemistry and Biotechnology
- School of Life and Environmental Sciences
- Deakin University
- Victoria 3220
- Australia
| | - Luke A. O'Dell
- Institute for Frontier Materials
- Deakin University
- Victoria 3220
- Australia
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