1
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Chantarangkul C, Patigo A, McMurtrie JC, Clérac R, Rouzières M, Gómez-Coca S, Ruiz E, Harding P, Harding DJ. Thermal Jahn-Teller Distortion Changes and Slow Relaxation of Magnetization in Mn(III) Schiff Base Complexes. Inorg Chem 2024; 63:12858-12869. [PMID: 38934463 PMCID: PMC11256760 DOI: 10.1021/acs.inorgchem.4c01317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Revised: 06/06/2024] [Accepted: 06/13/2024] [Indexed: 06/28/2024]
Abstract
The impact that the anion and alkyl group has on the electronic structures and magnetic properties of four mononuclear Mn(III) complexes is explored in [Mn(salEen-Br)2]Y (salEen-Br = 2-{[2-(ethylamino)ethylimino]methyl}-4-Br-phenol; Y = ClO4- 1 and BF4-·1/3CH2Cl2 2) and [Mn(salBzen-Br)2]Y (salBzen-Br = 2-{[2-(benzylamino)ethylimino]methyl}-4-Br-phenol; Y = ClO4- 3 and BF4- 4). X-ray structures of [Mn(salEen-Br)2]ClO4·0.45C6H14 1-hexane, [Mn(salEen-Br)2]BF4·0.33CH2Cl2·0.15C6H14 2-dcm-hexane, and 3-4 reveal that they crystallize in ambient conditions in the monoclinic P21/c space group. Lowering the temperature, 2-dcm-hexane uniquely exhibits a structural phase transition toward a monoclinic P21/n crystal structure determined at 100 K with the unit cell trebling in size. Remarkably, at room temperature, the axially elongated Jahn-Teller axis in 2-dcm-hexane is poorly defined but becomes clearer at low temperature after the phase transition. Magnetic susceptibility measurements of 1-4 reveal that only 3 and 4 show slow relaxation of magnetization with Δeff/kB = 27.9 and 20.7 K, implying that the benzyl group is important for observing single-molecule magnet (SMM) properties. Theoretical calculations demonstrate that the alkyl group subtly influences the orbital levels and therefore very likely the observed SMM properties.
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Affiliation(s)
- Chantalaksana Chantarangkul
- Functional
Materials and Nanotechnology Centre of Excellence, Walailak University, Thasala, Nakhon Si Thammarat 80160, Thailand
| | - Apinya Patigo
- Functional
Materials and Nanotechnology Centre of Excellence, Walailak University, Thasala, Nakhon Si Thammarat 80160, Thailand
| | - John C. McMurtrie
- Queensland
University of Technology (QUT), Brisbane, Queensland 4001, Australia
| | - Rodolphe Clérac
- University
of Bordeaux, CNRS, CRPP, UMR 5031, F-33600 Pessac, France
| | - Mathieu Rouzières
- University
of Bordeaux, CNRS, CRPP, UMR 5031, F-33600 Pessac, France
| | - Silvia Gómez-Coca
- Departament
de Química Inorgànica i Orgànica, Institut de
Recerca de Química Teòrica i Computacional, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain
| | - Eliseo Ruiz
- Departament
de Química Inorgànica i Orgànica, Institut de
Recerca de Química Teòrica i Computacional, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain
| | - Phimphaka Harding
- School
of Chemistry, Institute of Science, Suranaree
University of Technology, Nakhon
Ratchasima 30000, Thailand
| | - David J. Harding
- School
of Chemistry, Institute of Science, Suranaree
University of Technology, Nakhon
Ratchasima 30000, Thailand
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2
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Montà-González G, Ortiz-Gómez E, López-Lima R, Fiorini G, Martínez-Máñez R, Martí-Centelles V. Water-Soluble Molecular Cages for Biological Applications. Molecules 2024; 29:1621. [PMID: 38611902 PMCID: PMC11013847 DOI: 10.3390/molecules29071621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Revised: 04/01/2024] [Accepted: 04/02/2024] [Indexed: 04/14/2024] Open
Abstract
The field of molecular cages has attracted increasing interest in relation to the development of biological applications, as evidenced by the remarkable examples published in recent years. Two key factors have contributed to this achievement: First, the remarkable and adjustable host-guest chemical properties of molecular cages make them highly suitable for biological applications. This allows encapsulating therapeutic molecules to improve their properties. Second, significant advances have been made in synthetic methods to create water-soluble molecular cages. Achieving the necessary water solubility is a significant challenge, which in most cases requires specific chemical groups to overcome the inherent hydrophobic nature of the molecular cages which feature the organic components of the cage. This can be achieved by either incorporating water-solubilizing groups with negative/positive charges, polyethylene glycol chains, etc.; or by introducing charges directly into the cage structure itself. These synthetic strategies allow preparing water-soluble molecular cages for diverse biological applications, including cages' anticancer activity, anticancer drug delivery, photodynamic therapy, and molecular recognition of biological molecules. In the review we describe selected examples that show the main concepts to achieve water solubility in molecular cages and some selected recent biological applications.
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Affiliation(s)
- Giovanni Montà-González
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València, Universitat de València, Camino de Vera s/n, 46022 Valencia, Spain; (G.M.-G.); (E.O.-G.); (G.F.)
- Departamento de Química, Universitat Politècnica de València, Camí de Vera s/n, 46022 Valencia, Spain
| | - Eduardo Ortiz-Gómez
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València, Universitat de València, Camino de Vera s/n, 46022 Valencia, Spain; (G.M.-G.); (E.O.-G.); (G.F.)
- Departamento de Química, Universitat Politècnica de València, Camí de Vera s/n, 46022 Valencia, Spain
| | - Rocío López-Lima
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València, Universitat de València, Camino de Vera s/n, 46022 Valencia, Spain; (G.M.-G.); (E.O.-G.); (G.F.)
| | - Guillermo Fiorini
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València, Universitat de València, Camino de Vera s/n, 46022 Valencia, Spain; (G.M.-G.); (E.O.-G.); (G.F.)
| | - Ramón Martínez-Máñez
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València, Universitat de València, Camino de Vera s/n, 46022 Valencia, Spain; (G.M.-G.); (E.O.-G.); (G.F.)
- Departamento de Química, Universitat Politècnica de València, Camí de Vera s/n, 46022 Valencia, Spain
- CIBER de Bioingeniería Biomateriales y Nanomedicina, Instituto de Salud Carlos III, 46022 Valencia, Spain
- Unidad Mixta de Investigación en Nanomedicina y Sensores, Instituto de Investigación Sanitaria La Fe (IISLAFE), Universitat Politècnica de València, Avenida Fernando Abril Martorell, 106, 46026 Valencia, Spain
- Unidad Mixta UPV-CIPF de Investigación en Mecanismos de Enfermedades y Nanomedicina, Centro de Investigación Príncipe Felipe, Universitat Politècnica de València, Avenida Eduardo Primo Yúfera, 3, 46012 Valencia, Spain
| | - Vicente Martí-Centelles
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València, Universitat de València, Camino de Vera s/n, 46022 Valencia, Spain; (G.M.-G.); (E.O.-G.); (G.F.)
- Departamento de Química, Universitat Politècnica de València, Camí de Vera s/n, 46022 Valencia, Spain
- CIBER de Bioingeniería Biomateriales y Nanomedicina, Instituto de Salud Carlos III, 46022 Valencia, Spain
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Huang YH, Lu YL, Zhang XD, Liu CH, Ruan J, Qin YH, Cao ZM, Jiang J, Xu HS, Su CY. Dynamic Stereochemistry of M 8 Pd 6 Supramolecular Cages Based on Metal-Center Lability for Differential Chiral Induction, Resolution, and Recognition. Angew Chem Int Ed Engl 2024; 63:e202315053. [PMID: 37883532 DOI: 10.1002/anie.202315053] [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: 10/07/2023] [Revised: 10/24/2023] [Accepted: 10/26/2023] [Indexed: 10/28/2023]
Abstract
A series of isostructural supramolecular cages with a rhombic dodecahedron shape have been assembled with distinct metal-coordination lability (M8 Pd6 -MOC-16, M=Ru2+ , Fe2+ , Ni2+ , Zn2+ ). The chirality transfer between metal centers generally imposes homochirality on individual cages to enable solvent-dependent spontaneous resolution of Δ8 /Λ8 -M8 Pd6 enantiomers; however, their distinguishable stereochemical dynamics manifests differential chiral phenomena governed by the cage stability following the order Ru8 Pd6 >Ni8 Pd6 >Fe8 Pd6 >Zn8 Pd6 . The highly labile Zn centers endow the Zn8 Pd6 cage with conformational flexibility and deformation, enabling intrigue chiral-Δ8 /Λ8 -Zn8 Pd6 to meso-Δ4 Λ4 -Zn8 Pd6 transition induced by anions. The cage stabilization effect differs from inert Ru2+ , metastable Fe2+ /Ni2+ , and labile Zn2+ , resulting in different chiral-guest induction. Strikingly, solvent-mediated host-guest interactions have been revealed for Δ8 /Λ8 -(Ru/Ni/Fe)8 Pd6 cages to discriminate the chiral recognition of the guests with opposite chirality. These results demonstrate a versatile procedure to control the stereochemistry of metal-organic cages based on the dynamic metal centers, thus providing guidance to maneuver cage chirality at a supramolecular level by virtue of the solvent, anion, and guest to benefit practical applications.
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Affiliation(s)
- Yin-Hui Huang
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, GBRCE for Functional Molecular Engineering, LIFM, IGCME, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Yu-Lin Lu
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, GBRCE for Functional Molecular Engineering, LIFM, IGCME, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Xiao-Dong Zhang
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, GBRCE for Functional Molecular Engineering, LIFM, IGCME, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Chen-Hui Liu
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, GBRCE for Functional Molecular Engineering, LIFM, IGCME, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Jia Ruan
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, GBRCE for Functional Molecular Engineering, LIFM, IGCME, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Yu-Han Qin
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, GBRCE for Functional Molecular Engineering, LIFM, IGCME, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Zhong-Min Cao
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, GBRCE for Functional Molecular Engineering, LIFM, IGCME, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Jijun Jiang
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, GBRCE for Functional Molecular Engineering, LIFM, IGCME, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Hai-Sen Xu
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, GBRCE for Functional Molecular Engineering, LIFM, IGCME, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Cheng-Yong Su
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, GBRCE for Functional Molecular Engineering, LIFM, IGCME, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
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4
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Molinska P, Tarzia A, Male L, Jelfs KE, Lewis JEM. Diastereoselective Self-Assembly of Low-Symmetry Pd n L 2n Nanocages through Coordination-Sphere Engineering. Angew Chem Int Ed Engl 2023; 62:e202315451. [PMID: 37888946 PMCID: PMC10952360 DOI: 10.1002/anie.202315451] [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: 10/13/2023] [Revised: 10/27/2023] [Accepted: 10/27/2023] [Indexed: 10/28/2023]
Abstract
Metal-organic cages (MOCs) are popular host architectures assembled from ligands and metal ions/nodes. Assembling structurally complex, low-symmetry MOCs with anisotropic cavities can be limited by the formation of statistical isomer libraries. We set out to investigate the use of primary coordination-sphere engineering (CSE) to bias isomer selectivity within homo- and heteroleptic Pdn L2n cages. Unexpected differences in selectivities between alternative donor groups led us to recognise the significant impact of the second coordination sphere on isomer stabilities. From this, molecular-level insight into the origins of selectivity between cis and trans diastereoisomers was gained, highlighting the importance of both host-guest and host-solvent interactions, in addition to ligand design. This detailed understanding allows precision engineering of low-symmetry MOC assemblies without wholesale redesign of the ligand framework, and fundamentally provides a theoretical scaffold for the development of stimuli-responsive, shape-shifting MOCs.
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Affiliation(s)
- Paulina Molinska
- School of ChemistryUniversity of Birmingham EdgbastonBirminghamB15 2TTUK
| | - Andrew Tarzia
- Department of Applied Science and TechnologyPolitecnico di TorinoCorso Duca degli Abruzzi 2410129TorinoItaly
| | - Louise Male
- School of ChemistryUniversity of Birmingham EdgbastonBirminghamB15 2TTUK
| | - Kim E. Jelfs
- Department of ChemistryImperial College London, Molecular Sciences Research Hub White City CampusWood LaneLondonW12 0BZUK
| | - James E. M. Lewis
- School of ChemistryUniversity of Birmingham EdgbastonBirminghamB15 2TTUK
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5
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Díaz-Torres R, Gómez-Coca S, Ruiz E, Harding P, Harding DJ. Improving spin crossover characteristics in heteroleptic [Fe III(qsal-5-I)(qsal-5-OMe)]A complexes. Dalton Trans 2023. [PMID: 37908189 DOI: 10.1039/d3dt02503a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2023]
Abstract
A family of heteroleptic spin crossover (SCO) [FeIII(qsal-5-I)(qsal-5-OMe)]A·sol (qsal-5-X = 5-X-2-[(8-quinolylimino)methyl]phenolate; A = NO3-1 sol = 2MeOH, NCS-2 sol = 0.75MeOH·1.3H2O, BF4-3 sol = MeOH, OTf-4, sol = MeOH) complexes have been synthesized. Most of the complexes exhibit gradual SCO, with the exception of NCS, which is principally high spin. In contrast, the OTf complex shows an abrupt hysteretic SCO (35 K) after solvent loss. The magnetic properties of this complex are significantly improved in comparison to the related homoleptics, [Fe(qsal-I)2]OTf 5 (hysteresis, 8 K) and [Fe(qsal-5-OMe)2]OTf·CH2Cl26 (gradual SCO). Structural studies reveal that slight changes in the crystal packing cause stronger interactions improving the cooperativity. These findings are supported by DFT calculations using the r2SCAN functional in which the calculated structures show that SCO from the LS to the HS state causes pronounced scissoring of the 1D π-π chains and substantial changes in their relative orientation following loss of MeOH.
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Affiliation(s)
- Raúl Díaz-Torres
- Thammasat University Research Unit in Multifunctional Crystalline Materials and Applications (TU-MCMA), Faculty of Science and Technology, Thammasat University, Pathum Thani 12121, Thailand
| | - Silvia Gómez-Coca
- Departament de Química Inorgànica i Orgànica, Institut de Recerca de Química Teòrica i Computacional, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain
| | - Eliseo Ruiz
- Departament de Química Inorgànica i Orgànica, Institut de Recerca de Química Teòrica i Computacional, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain
| | - Phimphaka Harding
- School of Chemistry, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand.
| | - David J Harding
- School of Chemistry, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand.
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6
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Zheng J, Yang Y, Ronson TK, Wood DM, Nitschke JR. Redox Triggers Guest Release and Uptake Across a Series of Azopyridine-Based Metal-Organic Capsules. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2302580. [PMID: 37462086 DOI: 10.1002/adma.202302580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 06/29/2023] [Indexed: 09/21/2023]
Abstract
Precise control over guest release and recapture using external stimuli is a valuable goal, potentially enabling new modes of chemical purification. Including redox moieties within the ligand cores of molecular capsules to trigger the release and uptake of guests has proved effective, but this technique is limited to certain capsules and guests. Herein, the construction of a series of novel metal-organic capsules from ditopic, tritopic, and tetratopic ligands is demonstrated, all of which contain redox-active azo groups coordinated to FeII centers. Compared to their iminopyridine-based analogs, this new class of azopyridine-based capsules possesses larger cavities, capable of encapsulating more voluminous guests. Upon reduction of the capsules, their guests are released and may then be re-encapsulated when the capsules are regenerated by oxidation. Since the redox centers are on the ligand arms, they are modular and can be attached to a variety of ligand cores to afford varying and predictable architectures. This method thus shows promise as a generalized approach for designing redox-controlled guest release and uptake systems.
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Affiliation(s)
- Jieyu Zheng
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | - Yuchong Yang
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | - Tanya K Ronson
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | - Daniel M Wood
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | - Jonathan R Nitschke
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
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7
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Su H, Xu Y, Yu H, Han N, Zeng Y, Hao XQ, Shi J, Wang M. Construction of 1,3,5-Triazine-Based Prisms and Their Enhanced Solid-State Emissions. Inorg Chem 2023; 62:7795-7802. [PMID: 37163494 DOI: 10.1021/acs.inorgchem.3c00420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
In this study, two trigonal prisms based on the 1,3,5-triazine motif (SA and SB), distinguished by hydrophobic groups, were prepared by the self-assembly of tritopic terpyridine ligands and Zn(II) ions. SA and SB exhibited high luminescence efficiencies in the solid state, overcoming the fluorescence quenching of the 1,3,5-triazine group caused by π-π interactions. Notably, SA and SB exhibited different luminescence behaviors in the solution state and aggregation state. SB with 12 alkyl chains exhibited extremely weak fluorescence in a dilute solution, but its fluorescence intensity and photoluminescence quantum yield (PLQY) were significantly enhanced in the aggregated state (with the increase in the water fraction), especially in the solid state. Different from the gradually enhanced efficiency of SB, the PLQY of SA gradually decreased with the increase in aggregation but still maintained a high luminescence efficiency. These two complexes exhibited different modes to solve the fluorescence quenching of 1,3,5-triazine in the solid state. The hierarchical self-assembly of SB exhibited nanorods owing to the hydrophobic interactions of alky chains, while SA aggregated into spheres under the influence of π-π interactions.
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Affiliation(s)
- Haoyue Su
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin 130012, China
| | - Yaping Xu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin 130012, China
| | - Hao Yu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin 130012, China
| | - Ningxu Han
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin 130012, China
| | - Yunting Zeng
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin 130012, China
| | - Xin-Qi Hao
- College of Chemistry and Green Catalysis Center, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Junjuan Shi
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin 130012, China
| | - Ming Wang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin 130012, China
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8
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Sarkar M, Hey-Hawkins E, Boomishankar R. Encapsulation Studies on closo-Dicarbadodecaborane Isomers in Neutral Tetrahedral Palladium(II) Cages. Inorg Chem 2023; 62:4035-4042. [PMID: 36857772 DOI: 10.1021/acs.inorgchem.2c04207] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Abstract
The encapsulation of icosahedral closo-dicarbadodecaborane (o-, m-, and p-carboranes, Cb) as guest molecules at the intrinsic cavities of the three isostructural tetrahedral cages [{Pd3(NiPr)3PO}4(Cl-AN)6] (1), [{Pd3(NiPr)3PO}4(Br-AN)6] (2), and [{Pd3(NiPr)3PO}4(H-AN)6] (3) was studied. The formation of definite host-guest assemblies was probed with mass spectrometry, IR, and NMR spectral analysis. 2D DOSY 1H NMR of the Cb⊂Cage systems showed similar diffusion coefficient (D) values for the host and guest species, signifying the encapsulation of these guests inside the cage assemblies. The hydrodynamic radius (RH) derived from the D values of the host and guest species further confirmed the encapsulation of the Cb isomers at the cage pockets. The single-molecule energy optimization of the host-guest assemblies indicated the preferential binding of o-Cb as a guest inside the cages (1-3). The stabilization of these Cb guests inside these cages was further attributed to various possible nonclassical C-H···X-type interactions.
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Affiliation(s)
- Meghamala Sarkar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune, Dr. Homi Bhabha Road, Pune 411008, India
| | - Evamarie Hey-Hawkins
- Institut für Anorganische Chemie, Fakultät für Chemie und Mineralogie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany
| | - Ramamoorthy Boomishankar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune, Dr. Homi Bhabha Road, Pune 411008, India.,Centre for Energy Science, Indian Institute of Science Education and Research (IISER), Pune, Dr. Homi Bhabha Road, Pune 411008, India
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9
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Ge YY, Zhou XC, Zheng J, Luo J, Lai YL, Su J, Zhang HJ, Zhou XP, Li D. Self-Assembly of Two Tubular Metalloligand-Based Palladium-Organic Cages as Hosts for Polycyclic Aromatic Hydrocarbons. Inorg Chem 2023; 62:4048-4053. [PMID: 36847302 DOI: 10.1021/acs.inorgchem.2c04505] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
Herein we report two tubular metal-organic cages (MOCs), synthesized by the self-assembly of bidentate metalloligands with different lengths and PdII. These two MOCs feature Pd4L8-type square tubular and Pd3L6-type triangular cage structures, respectively. Both MOCs have been fully characterized by NMR spectroscopy, mass spectrometry, and theoretical calculation. Both cages can be employed for encapsulating polycyclic aromatic hydrocarbons and show high binding affinity toward coronene.
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Affiliation(s)
- Ying-Ying Ge
- Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, P. R. China
| | - Xian-Chao Zhou
- Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, P. R. China
| | - Ji Zheng
- Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, P. R. China
| | - Jie Luo
- Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, P. R. China
| | - Ya-Liang Lai
- Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, P. R. China
| | - Juan Su
- Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, P. R. China
| | - Hao-Jie Zhang
- Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, P. R. China
| | - Xiao-Ping Zhou
- Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, P. R. China
| | - Dan Li
- Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, P. R. China
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10
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Bouteille Q, Sonet D, Hennebelle M, Desvergne JP, Morvan E, Scalabre A, Pouget E, Méreau R, Bibal B. Singlet Oxygen Responsive Molecular Receptor to Modulate Atropisomerism and Cation Binding. Chemistry 2023; 29:e202203210. [PMID: 36639240 DOI: 10.1002/chem.202203210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Indexed: 01/15/2023]
Abstract
In switchable molecular recognition, 1 O2 stimulus responsive receptors offer a unique structural change that is rarely exploited. The employed [4+2] reaction between 1 O2 and anthracene derivatives is quantitative, reversible and easily implemented. To evaluate the full potential of this new stimulus, a non-macrocyclic anthracene-based host was designed for the modular binding of cations. The structural investigation showed that 1 O2 controlled the atropisomerism in an on/off fashion within the pair of hosts. The binding studies revealed higher association constants for the endoperoxide receptor compared to the parent anthracene, due to a more favoured preorganization of the recognition site. The fatigue of the 1 O2 switchable hosts and their complexes was monitored over five cycles of cycloaddition/cycloreversion.
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Affiliation(s)
- Quentin Bouteille
- Institut des Sciences Moléculaires UMR CNRS 5255, Université de Bordeaux, 351 cours de la Libération, 33405, Talence, France
| | - Dorian Sonet
- Institut des Sciences Moléculaires UMR CNRS 5255, Université de Bordeaux, 351 cours de la Libération, 33405, Talence, France
| | - Marc Hennebelle
- Institut des Sciences Moléculaires UMR CNRS 5255, Université de Bordeaux, 351 cours de la Libération, 33405, Talence, France
| | - Jean-Pierre Desvergne
- Institut des Sciences Moléculaires UMR CNRS 5255, Université de Bordeaux, 351 cours de la Libération, 33405, Talence, France
| | - Estelle Morvan
- Institut Européen de Chimie et Biologie, UAR 3033 CNRS INSERM, Université de Bordeaux, 2 rue Roger Escarpit, 33607, Pessac, France
| | - Antoine Scalabre
- Chimie et Biologie des Membranes et des Nanoobjets, UMR CNRS 5248, Université de Bordeaux, 2 rue Roger Escarpit, 33607, Pessac, France
| | - Emilie Pouget
- Chimie et Biologie des Membranes et des Nanoobjets, UMR CNRS 5248, Université de Bordeaux, 2 rue Roger Escarpit, 33607, Pessac, France
| | - Raphaël Méreau
- Institut des Sciences Moléculaires UMR CNRS 5255, Université de Bordeaux, 351 cours de la Libération, 33405, Talence, France
| | - Brigitte Bibal
- Institut des Sciences Moléculaires UMR CNRS 5255, Université de Bordeaux, 351 cours de la Libération, 33405, Talence, France
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11
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Yan D, Cai L, Hu S, Zhou Y, Zhou L, Sun Q. An Organo‐Palladium Host Built from a Dynamic Macrocyclic Ligand: Adaptive Self‐Assembly, Induced‐Fit Guest Binding, and Catalysis. Angew Chem Int Ed Engl 2022; 61:e202209879. [DOI: 10.1002/anie.202209879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Dan‐Ni Yan
- State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. 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 P. R. 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 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Yan‐Fang Zhou
- State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002 P. R. 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 P. R. 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 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
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12
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Yan DN, Cai LX, Hu SJ, Zhou YF, Zhou LP, Sun QF. An Organo‐Palladium Host Built from a Dynamic Macrocyclic Ligand: Adaptive Self‐Assembly, Induce‐Fit Guest Binding, and Catalysis. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202209879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Dan-Ni Yan
- University of the Chinese Academy of Sciences Fujian College CHINA
| | - Li-Xuan Cai
- Chinese Academy of Sciences Fujian Institute of Research on the Structure of Matter State Key Laboratory of Structural Chemistry 350002 Fuzhou CHINA
| | - Shao-Jun Hu
- University of the Chinese Academy of Sciences Fujian College 350002 Fuzhou CHINA
| | - Yan-Fang Zhou
- Chinese Academy of Sciences Fujian Institute of Research on the Structure of Matter State Key Laboratory of Structural Chemistry 350002 Fuzhou CHINA
| | - Li-Peng Zhou
- Chinese Academy of Sciences Fujian Institute of Research on the Structure of Matter State Key Laboratory of Structural Chemistry 350002 Fuzhou CHINA
| | - Qing-Fu Sun
- Chinese Academy of Sciences Fujian Institute of Research on the Structure of Matter State Key Laboratory of Structural Chemistry 155 Yangqiao Road West 350002 Fuzhou CHINA
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13
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Jayapaul J, Komulainen S, Zhivonitko VV, Mareš J, Giri C, Rissanen K, Lantto P, Telkki VV, Schröder L. Hyper-CEST NMR of metal organic polyhedral cages reveals hidden diastereomers with diverse guest exchange kinetics. Nat Commun 2022; 13:1708. [PMID: 35361759 PMCID: PMC8971460 DOI: 10.1038/s41467-022-29249-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Accepted: 03/03/2022] [Indexed: 01/04/2023] Open
Abstract
Guest capture and release are important properties of self-assembling nanostructures. Over time, a significant fraction of guests might engage in short-lived states with different symmetry and stereoselectivity and transit frequently between multiple environments, thereby escaping common spectroscopy techniques. Here, we investigate the cavity of an iron-based metal organic polyhedron (Fe-MOP) using spin-hyperpolarized 129Xe Chemical Exchange Saturation Transfer (hyper-CEST) NMR. We report strong signals unknown from previous studies that persist under different perturbations. On-the-fly delivery of hyperpolarized gas yields CEST signatures that reflect different Xe exchange kinetics from multiple environments. Dilute pools with ~ 104-fold lower spin numbers than reported for directly detected hyperpolarized nuclei are readily detected due to efficient guest turnover. The system is further probed by instantaneous and medium timescale perturbations. Computational modeling indicates that these signals originate likely from Xe bound to three Fe-MOP diastereomers (T, C3, S4). The symmetry thus induces steric effects with aperture size changes that tunes selective spin manipulation as it is employed in CEST MRI agents and, potentially, impacts other processes occurring on the millisecond time scale.
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Affiliation(s)
- Jabadurai Jayapaul
- Molecular Imaging, Department of Structural Biology, Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), 13125, Berlin, Germany
- Division of Translational Molecular Imaging, Deutsches Krebsforschungszentrum (DKFZ), 69120, Heidelberg, Germany
| | | | | | - Jiří Mareš
- NMR Research Unit, University of Oulu, 90014, Oulu, Finland
- Research Unit of Medical Imaging, Physics and Technology (MIPT), University of Oulu, 90014, Oulu, Finland
| | - Chandan Giri
- University of Jyvaskyla, Department of Chemistry, 40014, Jyväskylä, Finland
| | - Kari Rissanen
- University of Jyvaskyla, Department of Chemistry, 40014, Jyväskylä, Finland
| | - Perttu Lantto
- NMR Research Unit, University of Oulu, 90014, Oulu, Finland.
| | | | - Leif Schröder
- Molecular Imaging, Department of Structural Biology, Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), 13125, Berlin, Germany.
- Division of Translational Molecular Imaging, Deutsches Krebsforschungszentrum (DKFZ), 69120, Heidelberg, Germany.
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14
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Tarzia A, Jelfs KE. Unlocking the computational design of metal-organic cages. Chem Commun (Camb) 2022; 58:3717-3730. [PMID: 35229861 PMCID: PMC8932387 DOI: 10.1039/d2cc00532h] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 02/22/2022] [Indexed: 12/11/2022]
Abstract
Metal-organic cages are macrocyclic structures that can possess an intrinsic void that can hold molecules for encapsulation, adsorption, sensing, and catalysis applications. As metal-organic cages may be comprised from nearly any combination of organic and metal-containing components, cages can form with diverse shapes and sizes, allowing for tuning toward targeted properties. Therefore, their near-infinite design space is almost impossible to explore through experimentation alone and computational design can play a crucial role in exploring new systems. Although high-throughput computational design and screening workflows have long been known as powerful tools in drug and materials discovery, their application in exploring metal-organic cages is more recent. We show examples of structure prediction and host-guest/catalytic property evaluation of metal-organic cages. These examples are facilitated by advances in methods that handle metal-containing systems with improved accuracy and are the beginning of the development of automated cage design workflows. We finally outline a scope for how high-throughput computational methods can assist and drive experimental decisions as the field pushes toward functional and complex metal-organic cages. In particular, we highlight the importance of considering realistic, flexible systems.
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Affiliation(s)
- Andrew Tarzia
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, White City Campus, Wood Lane, London, W12 0BZ, UK.
| | - Kim E Jelfs
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, White City Campus, Wood Lane, London, W12 0BZ, UK.
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15
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Kennedy ADW, DiNardi RG, Fillbrook LL, Donald WA, Beves JE. Visible-Light Switching of Metallosupramolecular Assemblies. Chemistry 2022; 28:e202104461. [PMID: 35102616 PMCID: PMC9302685 DOI: 10.1002/chem.202104461] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Indexed: 11/11/2022]
Abstract
A photoswitchable ligand and palladium(II) ions form a dynamic mixture of self-assembled metallosupramolecular structures. The photoswitching ligand is an ortho-fluoroazobenzene with appended pyridyl groups. Combining the E-isomer with palladium(II) salts affords a double-walled triangle with composition [Pd3 L6 ]6+ and a distorted tetrahedron [Pd4 L8 ]8+ (1 : 2 ratio at 298 K). Irradiation with 410 nm light generates a photostationary state with approximately 80 % of the E-isomer of the ligand and results in the selective disassembly of the tetrahedron, the more thermodynamically stable structure, and the formation of the triangle, the more kinetically inert product. The triangle is then slowly transformed back into the tetrahedron over 2 days at 333 K. The Z-isomer of the ligand does not form any well-defined structures and has a thermal half-life of 25 days at 298 K. This approach shows how a thermodynamically preferred self-assembled structure can be reversibly pumped to a kinetic trap by small perturbations of the isomer distribution using non-destructive visible light.
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Affiliation(s)
| | - Ray G. DiNardi
- School of ChemistryThe University of New South WalesSydneyNSW 2052Australia
| | - Lucy L. Fillbrook
- School of ChemistryThe University of New South WalesSydneyNSW 2052Australia
| | - William A. Donald
- School of ChemistryThe University of New South WalesSydneyNSW 2052Australia
| | - Jonathon E. Beves
- School of ChemistryThe University of New South WalesSydneyNSW 2052Australia
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16
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Siddique RG, Arachchige KSA, AL‐Fayaad HA, Thoburn JD, McMurtrie JC, Clegg JK. Controlling the Complexity and Interconversion Mechanisms in Self‐Assembled [Fe
2
L
3
]
4+
Helicates and [Fe
4
L
6
]
8+
Cages. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202115555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Rashid G. Siddique
- School of Chemistry and Molecular Biosciences The University of Queensland St Lucia Qld 4072 Australia
- Department of Chemistry School of Natural Sciences (SNS) National University of Science and Technology (NUST), H-12 Islamabad 46000 Pakistan
| | - Kasun S. A. Arachchige
- School of Chemistry and Molecular Biosciences The University of Queensland St Lucia Qld 4072 Australia
| | - Hydar A. AL‐Fayaad
- School of Chemistry and Molecular Biosciences The University of Queensland St Lucia Qld 4072 Australia
| | - John D. Thoburn
- Department of Chemistry Randolph-Macon College Ashland VA 23005 USA
| | - John C. McMurtrie
- School of Chemistry and Physics and Centre for Materials Science Queensland University of Technology (QUT) Brisbane Queensland 4000 Australia
| | - Jack K. Clegg
- School of Chemistry and Molecular Biosciences The University of Queensland St Lucia Qld 4072 Australia
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17
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Ronson TK, Carpenter JP, Nitschke JR. Dynamic optimization of guest binding in a library of diastereomeric heteroleptic coordination cages. Chem 2022. [DOI: 10.1016/j.chempr.2021.12.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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18
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Siddique RG, Arachchige KSA, Al-Fayaad HA, Thoburn JD, McMurtrie JC, Clegg JK. Controlling the Complexity and Interconversion Mechanisms in Self-Assembled [Fe 2 L 3 ] 4+ Helicates and [Fe 4 L 6 ] 8+ Cages. Angew Chem Int Ed Engl 2021; 61:e202115555. [PMID: 34897921 DOI: 10.1002/anie.202115555] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Indexed: 11/06/2022]
Abstract
Self-assembled coordination cages and metal-organic frameworks have relied extensively on symmetric ligands in their formation. Here we have prepared a relatively simple system employing an unsymmetric ligand that results in two distinct self-assembled structures, a [Fe2 L3 ]4+ helicate and a [Fe4 L6 ]8+ cage composed of 10 interconverting diastereomers and their enantiomers. We show that the steric profile of the ligand controls the complexity, thermodynamics and kinetics of interconversion of the system.
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Affiliation(s)
- Rashid G Siddique
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Qld 4072, Australia.,Department of Chemistry, School of Natural Sciences (SNS), National University of Science and Technology (NUST), H-12, Islamabad, 46000, Pakistan
| | - Kasun S A Arachchige
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Qld 4072, Australia
| | - Hydar A Al-Fayaad
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Qld 4072, Australia
| | - John D Thoburn
- Department of Chemistry, Randolph-Macon College, Ashland, VA 23005, USA
| | - John C McMurtrie
- School of Chemistry and Physics and Centre for Materials Science, Queensland University of Technology (QUT), Brisbane, Queensland 4000, Australia
| | - Jack K Clegg
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Qld 4072, Australia
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19
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Bauer W, Maid H, Saalfrank RW. Interconversion of tetrahedral [(M)
4
∩{Mg
4
(L
1
)
6
}]/[In
4
(L
2
)
4
] and cyclic [In
6
Cl
6
(L
3
)
6
]. Enantiotopization of diastereotopic protons monitored by means of VT
1
H NMR spectroscopy. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Walter Bauer
- Department Chemie und Pharmazie Friedrich-Alexander-Universität Erlangen-Nürnberg Nikolaus-Fiebiger-Str. 10 91058 Erlangen Germany
| | - Harald Maid
- Department Chemie und Pharmazie Friedrich-Alexander-Universität Erlangen-Nürnberg Nikolaus-Fiebiger-Str. 10 91058 Erlangen Germany
| | - Rolf W. Saalfrank
- Department Chemie und Pharmazie Friedrich-Alexander-Universität Erlangen-Nürnberg Nikolaus-Fiebiger-Str. 10 91058 Erlangen Germany
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20
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A Comprehensive Analysis of the Metal-Nitrile Bonding in an Organo-Diiron System. Molecules 2021; 26:molecules26237088. [PMID: 34885670 PMCID: PMC8659010 DOI: 10.3390/molecules26237088] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 11/18/2021] [Accepted: 11/19/2021] [Indexed: 11/17/2022] Open
Abstract
Nitriles (N≡CR) are ubiquitous in coordination chemistry, yet literature studies on metal-nitrile bonding based on a multi-technique approach are rare. We selected an easily-available di-organoiron framework, containing both π-acceptor (CO, aminocarbyne) and donor (Cp = η5-C5H5) ligands, as a suitable system to provide a comprehensive description of the iron-nitrile bond. Thus, the new nitrile (2-12)CF3SO3 and the related imine/amine complexes (8-9)CF3SO3 were synthesized in 58-83% yields from the respective tris-carbonyl precursors (1a-d)CF3SO3, using the TMNO strategy (TMNO = trimethylamine-N-oxide). The products were fully characterized by elemental analysis, IR (solution and solid state) and multinuclear NMR spectroscopy. In addition, the structures of (2)CF3SO3, (3)CF3SO3, (5)CF3SO3 and (11)CF3SO3 were ascertained by single crystal X-ray diffraction. Salient spectroscopic data of the nitrile complexes are coherent with the scale of electron-donor power of the R substituents; otherwise, this scale does not match the degree of Fe → N π-back-donation and the Fe-N bond energies, which were elucidated in (2-7)CF3SO3 by DFT calculations.
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21
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Tan KT, Tao S, Huang N, Jiang D. Water cluster in hydrophobic crystalline porous covalent organic frameworks. Nat Commun 2021; 12:6747. [PMID: 34799574 PMCID: PMC8604923 DOI: 10.1038/s41467-021-27128-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 10/19/2021] [Indexed: 11/23/2022] Open
Abstract
Progress over the past decades in water confinement has generated a variety of polymers and porous materials. However, most studies are based on a preconception that small hydrophobic pores eventually repulse water molecules, which precludes the exploration of hydrophobic microporous materials for water confinement. Here, we demonstrate water confinement across hydrophobic microporous channels in crystalline covalent organic frameworks. The frameworks are designed to constitute dense, aligned and one-dimensional polygonal channels that are open and accessible to water molecules. The hydrophobic microporous frameworks achieve full occupation of pores by water via synergistic nucleation and capillary condensation and deliver quick water exchange at low pressures. Water confinement experiments with large-pore frameworks pinpoint thresholds of pore size where confinement becomes dominated by high uptake pressure and large exchange hysteresis. Our results reveal a platform based on microporous hydrophobic covalent organic frameworks for water confinement. Research on water confinement in small hydrophobic pores remains scarce because of a preconception that small hydrophobic pores repulse water molecules. Here, the authors demonstrate water confinement across hydrophobic microporous channels in crystalline covalent organic frameworks.
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Affiliation(s)
- Ke Tian Tan
- Department of Chemistry, Faculty of Science, National University of Singapore, 3, Science Drive 3, Singapore, 117543, Singapore
| | - Shanshan Tao
- Department of Chemistry, Faculty of Science, National University of Singapore, 3, Science Drive 3, Singapore, 117543, Singapore
| | - Ning Huang
- Department of Chemistry, Faculty of Science, National University of Singapore, 3, Science Drive 3, Singapore, 117543, Singapore
| | - Donglin Jiang
- Department of Chemistry, Faculty of Science, National University of Singapore, 3, Science Drive 3, Singapore, 117543, Singapore.
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22
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Affiliation(s)
- Edmundo G. Percástegui
- Instituto de Química Universidad Nacional Autónoma de México Ciudad Universitaria Ciudad de México 04510 México
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM Carretera Toluca-Atlacomulco km 14.5, Toluca Estado de México 50200 México
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23
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Brady KG, Liu B, Li X, Isaacs L. Self Assembled Cages with Mechanically Interlocked Cucurbiturils. Supramol Chem 2021; 33:8-32. [PMID: 34366642 DOI: 10.1080/10610278.2021.1908546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
We report preparation of (bis)aniline ligand 4 which contains a central viologen binding domain and its subcomponent self-assembly with aldehyde 5 and Fe(OTf)2 in CH3CN to yield tetrahedral assembly 6. Complexation of ligand 4 with CB[7] in the form of CB[7]•4•2PF6 allows the preparation of assembly 7 which contains an average of 1.95 (range 1-3) mechanically interlocked CB[7] units. Assemblies 6 and 7 are hydrolytically unstable in water due to their imine linkages. Redesign of our system with water stable 2,2'-bipyridine end groups was realized in the form of ligands 11 and 16 which also contain a central viologen binding domain. Self-assembly of 11 with Fe(NTf2)2 gave tetrahedral MOP 12 as evidenced by 1H NMR, DOSY, and mass spectrometric analysis. In contrast, isomeric ligand 16 underwent self-assembly with Fe(OTf)2 to give cubic assembly 17. Precomplexation of ligands 11 and 16 with CB[7] gave the acetonitrile soluble CB[7]•11•2PF6 and CB[7]•16•2PF6 complexes. Self-assembly of CB[7]•11•2PF6 with Fe(OTf)2 gave tetrahedron 13 which contains on average 1.8 mechanically interlocked CB[7] units as determined by 1H NMR, DOSY, and ESI-MS analysis. Self-assembly of CB[7]•16•2PF6 with Fe(OTf)2 gave cube 13 which contains 6.59 mechanically interlocked CB[7] units as determined by 1H NMR and DOSY measurements.
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Affiliation(s)
- Kimberly G Brady
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - Bingqing Liu
- Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States
| | - Xiaopeng Li
- Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States
| | - Lyle Isaacs
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
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24
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Martín Díaz AE, Lewis JEM. Structural Flexibility in Metal-Organic Cages. Front Chem 2021; 9:706462. [PMID: 34336791 PMCID: PMC8317845 DOI: 10.3389/fchem.2021.706462] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 06/02/2021] [Indexed: 01/23/2023] Open
Abstract
Metal-organic cages (MOCs) have emerged as a diverse class of molecular hosts with potential utility across a vast spectrum of applications. With advances in single-crystal X-ray diffraction and economic methods of computational structure optimisation, cavity sizes can be readily determined. In combination with a chemist's intuition, educated guesses about the likelihood of particular guests being bound within these porous structures can be made. Whilst practically very useful, simple rules-of-thumb, such as Rebek's 55% rule, fail to take into account structural flexibility inherent to MOCs that can allow hosts to significantly adapt their internal cavity. An often unappreciated facet of MOC structures is that, even though relatively rigid building blocks may be employed, conformational freedom can enable large structural changes. If it could be exploited, this flexibility might lead to behavior analogous to the induced-fit of substrates within the active sites of enzymes. To this end, in-roads have already been made to prepare MOCs incorporating ligands with large degrees of conformational freedom. Whilst this may make the constitution of MOCs harder to predict, it has the potential to lead to highly sophisticated and functional synthetic hosts.
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Affiliation(s)
| | - James E. M. Lewis
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, London, United Kingdom
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25
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Prakash P, Ardhra S, Fall B, Zdilla MJ, Wunder SL, Venkatnathan A. Solvate sponge crystals of (DMF) 3NaClO 4: reversible pressure/temperature controlled juicing in a melt/press-castable sodium-ion conductor. Chem Sci 2021; 12:5574-5581. [PMID: 34168793 PMCID: PMC8179650 DOI: 10.1039/d0sc06455f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 02/28/2021] [Indexed: 12/23/2022] Open
Abstract
A new type of crystalline solid, termed "solvate sponge crystal", is presented, and the chemical basis of its properties are explained for a melt- and press-castable solid sodium ion conductor. X-ray crystallography and atomistic simulations reveal details of atomic interactions and clustering in (DMF)3NaClO4 and (DMF)2NaClO4 (DMF = N-N'-dimethylformamide). External pressure or heating results in reversible expulsion of liquid DMF from (DMF)3NaClO4 to generate (DMF)2NaClO4. The process reverses upon the release of pressure or cooling. Simulations reveal the mechanism of crystal "juicing," as well as melting. In particular, cation-solvent clusters form a chain of octahedrally coordinated Na+-DMF networks, which have perchlorate ions present in a separate sublattice space in 3 : 1 stoichiometry. Upon heating and/or pressing, the Na+⋯DMF chains break and the replacement of a DMF molecule with a ClO4 - anion per Na+ ion leads to the conversion of the 3 : 1 stoichiometry to a 2 : 1 stoichiometry. The simulations reveal the anisotropic nature of pressure induced stoichiometric conversion. The results provide molecular level understanding of a solvate sponge crystal with novel and desirable physical castability properties for device fabrication.
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Affiliation(s)
- Prabhat Prakash
- Department of Chemistry and Centre for Energy Science, Indian Institute of Science Education and Research Pune Dr Homi Bhabha Road, Pashan Pune 411008 India
- Materials Science and Engineering, Indian Institute of Technology Gandhinagar Gujarat 382355 India
| | - Shylendran Ardhra
- Department of Chemistry and Centre for Energy Science, Indian Institute of Science Education and Research Pune Dr Homi Bhabha Road, Pashan Pune 411008 India
| | - Birane Fall
- Department of Chemistry, Temple University 1901-N 13th St. Philadelphia PA 19086 USA
| | - Michael J Zdilla
- Department of Chemistry, Temple University 1901-N 13th St. Philadelphia PA 19086 USA
| | - Stephanie L Wunder
- Department of Chemistry, Temple University 1901-N 13th St. Philadelphia PA 19086 USA
| | - Arun Venkatnathan
- Department of Chemistry and Centre for Energy Science, Indian Institute of Science Education and Research Pune Dr Homi Bhabha Road, Pashan Pune 411008 India
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26
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McTernan CT, Ronson TK, Nitschke JR. Selective Anion Binding Drives the Formation of Ag I8L 6 and Ag I12L 6 Six-Stranded Helicates. J Am Chem Soc 2021; 143:664-670. [PMID: 33382246 PMCID: PMC7879535 DOI: 10.1021/jacs.0c11905] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Indexed: 12/11/2022]
Abstract
Here we describe the formation of an unexpected and unique family of hollow six-stranded helicates. The formation of these structures depends on the coordinative flexibility of silver and the 2-formyl-1,8-napthyridine subcomponent. Crystal structures show that these assemblies are held together by Ag4I, Ag4Br, or Ag6(SO4)2 clusters, where the templating anion plays an integral structure-defining role. Prior to the addition of the anionic template, no six-stranded helicate was observed to form, with the system instead consisting of a dynamic mixture of triple helicate and tetrahedron. Six-stranded helicate formation was highly sensitive to the structure of the ligand, with minor modifications inhibiting its formation. This work provides an unusual example of mutual stabilization between metal clusters and a self-assembled metal-organic cage. The selective preparation of this anisotropic host demonstrates new modes of guiding selective self-assembly using silver(I), whose many stable coordination geometries render design difficult.
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Affiliation(s)
- Charlie T. McTernan
- Department of Chemistry, University of Cambridge,
Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Tanya K. Ronson
- Department of Chemistry, University of Cambridge,
Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Jonathan R. Nitschke
- Department of Chemistry, University of Cambridge,
Lensfield Road, Cambridge CB2 1EW, United Kingdom
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27
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Cecot P, Walczak A, Markiewicz G, Stefankiewicz AR. Gating the photoactivity of azobenzene-type ligands trapped within a dynamic system of an M 4L 6 tetrahedral cage, an M 2L 2 metallocycle and mononuclear ML n complexes. Inorg Chem Front 2021. [DOI: 10.1039/d1qi01063h] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Complexation of metal ions by a ligand bearing a azobenzene linker yielded two types of complexes: an [M2L2]4+ metallocycle and an [M4L6]8+ tetrahedral cage, which can be further converted into libraries of mononuclear [M(L′/L′′)n]2+ species.
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Affiliation(s)
- Piotr Cecot
- Faculty of Chemistry, Adam Mickiewicz University, ul. Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland
- Center for Advanced Technologies, Adam Mickiewicz University, Poznań, ul. Uniwersytetu Poznańskiego 10, 61-614 Poznań, Poland
| | - Anna Walczak
- Faculty of Chemistry, Adam Mickiewicz University, ul. Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland
- Center for Advanced Technologies, Adam Mickiewicz University, Poznań, ul. Uniwersytetu Poznańskiego 10, 61-614 Poznań, Poland
| | - Grzegorz Markiewicz
- Center for Advanced Technologies, Adam Mickiewicz University, Poznań, ul. Uniwersytetu Poznańskiego 10, 61-614 Poznań, Poland
| | - Artur R. Stefankiewicz
- Faculty of Chemistry, Adam Mickiewicz University, ul. Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland
- Center for Advanced Technologies, Adam Mickiewicz University, Poznań, ul. Uniwersytetu Poznańskiego 10, 61-614 Poznań, Poland
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28
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Percástegui E, Ronson TK, Nitschke JR. Design and Applications of Water-Soluble Coordination Cages. Chem Rev 2020; 120:13480-13544. [PMID: 33238092 PMCID: PMC7760102 DOI: 10.1021/acs.chemrev.0c00672] [Citation(s) in RCA: 238] [Impact Index Per Article: 59.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Indexed: 12/23/2022]
Abstract
Compartmentalization of the aqueous space within a cell is necessary for life. In similar fashion to the nanometer-scale compartments in living systems, synthetic water-soluble coordination cages (WSCCs) can isolate guest molecules and host chemical transformations. Such cages thus show promise in biological, medical, environmental, and industrial domains. This review highlights examples of three-dimensional synthetic WSCCs, offering perspectives so as to enhance their design and applications. Strategies are presented that address key challenges for the preparation of coordination cages that are soluble and stable in water. The peculiarities of guest binding in aqueous media are examined, highlighting amplified binding in water, changing guest properties, and the recognition of specific molecular targets. The properties of WSCC hosts associated with biomedical applications, and their use as vessels to carry out chemical reactions in water, are also presented. These examples sketch a blueprint for the preparation of new metal-organic containers for use in aqueous solution, as well as guidelines for the engineering of new applications in water.
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Affiliation(s)
- Edmundo
G. Percástegui
- Department
of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United
Kingdom
- Instituto
de Química, Ciudad UniversitariaUniversidad
Nacional Autónoma de México, Ciudad de México 04510, México
- Centro
Conjunto de Investigación en Química Sustentable, UAEM-UNAM, Carretera Toluca-Atlacomulco Km 14.5, Toluca, 50200 Estado de México, México
| | - Tanya K. Ronson
- Department
of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United
Kingdom
| | - Jonathan R. Nitschke
- Department
of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United
Kingdom
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29
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Kieffer M, Bilbeisi RA, Thoburn JD, Clegg JK, Nitschke JR. Guest Binding Drives Host Redistribution in Libraries of Co II 4 L 4 Cages. Angew Chem Int Ed Engl 2020; 59:11369-11373. [PMID: 32243707 PMCID: PMC7383889 DOI: 10.1002/anie.202004627] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Indexed: 12/29/2022]
Abstract
Two CoII 4 L4 tetrahedral cages prepared from similar building blocks showed contrasting host-guest properties. One cage did not bind guests, whereas the second encapsulated a series of anions, due to electronic and geometric effects. When the building blocks of both cages were present during self-assembly, a library of five CoII LA x LB 4-x cages was formed in a statistical ratio in the absence of guests. Upon incorporation of anions able to interact preferentially with some library members, the products obtained were redistributed in favor of the best anion binders. To quantify the magnitudes of these templation effects, ESI-MS was used to gauge the effect of each template upon library redistribution.
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Affiliation(s)
- Marion Kieffer
- Department of ChemistryUniversity of CambridgeLensfield RoadCambridgeCB2 1EWUK
| | - Rana A. Bilbeisi
- Department of ChemistryUniversity of CambridgeLensfield RoadCambridgeCB2 1EWUK
- Department of Civil and Environmental EngineeringAmerican University of BeirutBeirutLebanon
| | - John D. Thoburn
- Department of ChemistryRandolph-Macon CollegeAshlandVA23005USA
| | - Jack K. Clegg
- Department of ChemistryUniversity of CambridgeLensfield RoadCambridgeCB2 1EWUK
- School of Chemistry and Molecular BiosciencesThe University of QueenslandSt LuciaQLD4072Australia
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30
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31
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Akine S, Sakata Y. Control of Guest Binding Kinetics in Macrocycles and Molecular Cages. CHEM LETT 2020. [DOI: 10.1246/cl.200017] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Shigehisa Akine
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
- WPI Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Yoko Sakata
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
- WPI Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
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32
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Sconyers DJ, Blakemore JD. Electrodeposition behavior of homoleptic transition metal acetonitrile complexes interrogated with piezoelectric gravimetry. Analyst 2020; 145:466-477. [PMID: 31750451 DOI: 10.1039/c9an01952a] [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
Homoleptic acetonitrile complexes of first-row transition metal ions are a common product of the detrimental speciation of coordination complexes and organometallic compounds. However, the electrochemical properties of such species are mostly unknown, introducing ambiguities into interpretation of electroanalytical data associated with studies of molecular electrocatalysis. Here, we have cataloged the cyclic voltammetric properties of the solvento complexes of Mn(ii), Fe(ii), Co(ii), Ni(ii), Cu(i), and Zn(ii) in acetonitrile electrolyte, providing information on the cathodic electrodeposition and anodic stripping processes occuring with each ion. The electrochemical quartz crystal microbalance (EQCM) has been used to quantify these processes, as well as the rates of the in situ corrosion of electrodeposited materials by the strong organic acid dimethylforamidinium, [DMFH]+. Ex situ X-ray photoelectron spectroscopic results confirm the interpretations of the voltammetric and gravimetric data, and confirm the periodic relationship between the metals. Taken together, the results described here provide an electrochemical roadmap useful in distinguishing currents arising from homogeneous electrocatalysis from currents associated with the redox cycling of secondary heterogeneous materials.
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Affiliation(s)
- David J Sconyers
- Department of Chemistry, University of Kansas, 1567 Irving Hill Road, Lawrence, Kansas 66045, USA.
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33
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Horiuchi S, Matsuo C, Sakuda E, Arikawa Y, Clever GH, Umakoshi K. Anion-mediated encapsulation-induced emission enhancement of an IrIII complex within a resorcin[4]arene hexameric capsule. Dalton Trans 2020; 49:8472-8477. [DOI: 10.1039/d0dt01485k] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The anions of the Ir complex salts control the thermodynamic stability and photoluminescence properties of the host–guest complex.
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Affiliation(s)
- Shinnosuke Horiuchi
- Division of Chemistry and Materials Science
- Graduate School of Engineering
- Nagasaki University
- Nagasaki
- Japan
| | - Chiharu Matsuo
- Division of Chemistry and Materials Science
- Graduate School of Engineering
- Nagasaki University
- Nagasaki
- Japan
| | - Eri Sakuda
- Division of Chemistry and Materials Science
- Graduate School of Engineering
- Nagasaki University
- Nagasaki
- Japan
| | - Yasuhiro Arikawa
- Division of Chemistry and Materials Science
- Graduate School of Engineering
- Nagasaki University
- Nagasaki
- Japan
| | - Guido H. Clever
- Faculty of Chemistry and Chemical Biology
- TU Dortmund University
- Dortmund
- Germany
| | - Keisuke Umakoshi
- Division of Chemistry and Materials Science
- Graduate School of Engineering
- Nagasaki University
- Nagasaki
- Japan
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34
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Zhou Y, Li H, Zhu T, Gao T, Yan P. A Highly Luminescent Chiral Tetrahedral Eu 4L 4(L') 4 Cage: Chirality Induction, Chirality Memory, and Circularly Polarized Luminescence. J Am Chem Soc 2019; 141:19634-19643. [PMID: 31747264 DOI: 10.1021/jacs.9b07178] [Citation(s) in RCA: 120] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Chiral lanthanide cages with circularly polarized luminescence (CPL) properties have found potential application in enantioselective guest recognition and sensing. However, it still remains a big challenge to develop a simple and robust method for the diastereoselective assembly of homochiral lanthanide cages in view of the large lability of the Ln(III) ions. Herein, we report the first example of the formation of a enantiopure lanthanide tetrahedral cage via a chiral ancillary ligand induction strategy. One such cage, (Eu4L4)(R/S-BINAPO)4, is assembled by four achiral C3-symmeric tris(β-diketones) (4,4',4″-tris(4,4,4-trifluoro-1,3-dioxobutyl)triphenylamine, L) as faces, four Eu(III) ions as vertices and four chiral R-/S-bis(diphenylphosphoryl)-1,1'-binaphthyl (R/S-BINAPO) as ancillary ligands. X-ray crystallography and NMR and CD spectra confirm the formation of a pair of enantiopure chiral topological tetrahedral cages, (Eu4L4)(R-BINAPO)4 and (Eu4L4)(S-BINAPO)4 (ΔΔΔΔ-1 and ΛΛΛΛ-1). As expected, the tetrahedral cages present strong CPL with |glum| values up to 0.20, while they unexpectedly give ultrahigh luminescent quantum yields (QYs) of up to 81%, the highest value reported in chiral Ln(III) complexes. More impressively, the chiral memory effect for a lanthanide-based assembly is observed for the first time. The chirality of the original cage 1 framework is retained after R/S-BINAPO is replaced by the achiral bis[2-(diphenylphosphino)phenyl] ether oxide (DPEPO), and thus another pair of enantiopure Eu(III) tetrahedral cages, ΔΔΔΔ- and ΛΛΛΛ-[(Eu4L4)(DPEPO)4] (ΔΔΔΔ-2 and ΛΛΛΛ-2), have been isolated. Encouragingly, cage 2 also presents an impressive luminescence quantum yield (QY = 68%) and intense CPL (|glum| = 0.11). This study offers a simple and low-cost synthesis strategy for the preparation of lanthanide cages with CPL properties.
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Affiliation(s)
- Yanyan Zhou
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science , Heilongjiang University , Harbin 150080 , People's Republic of China
| | - Hongfeng Li
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science , Heilongjiang University , Harbin 150080 , People's Republic of China
| | - Tianyu Zhu
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science , Heilongjiang University , Harbin 150080 , People's Republic of China
| | - Ting Gao
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science , Heilongjiang University , Harbin 150080 , People's Republic of China
| | - Pengfei Yan
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science , Heilongjiang University , Harbin 150080 , People's Republic of China
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35
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Martínez‐Agramunt V, Eder T, Darmandeh H, Guisado‐Barrios G, Peris E. A Size‐Flexible Organometallic Box for the Encapsulation of Fullerenes. Angew Chem Int Ed Engl 2019; 58:5682-5686. [DOI: 10.1002/anie.201901586] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Indexed: 12/20/2022]
Affiliation(s)
- Victor Martínez‐Agramunt
- Institute of Advanced Materials (INAM), Centro de Innovación en Química Avanzada (ORFEO-CINQA)Universitat Jaume I Av. Vicente Sos Baynat s/n. Castellón 12071 Spain
| | - Tobias Eder
- Institute of Advanced Materials (INAM), Centro de Innovación en Química Avanzada (ORFEO-CINQA)Universitat Jaume I Av. Vicente Sos Baynat s/n. Castellón 12071 Spain
- Current address: Institut für Anorganische und Analytische ChemieWestfälische Wilhelms-Universität Münster 48149 Münster Germany
| | - Heidar Darmandeh
- Institute of Advanced Materials (INAM), Centro de Innovación en Química Avanzada (ORFEO-CINQA)Universitat Jaume I Av. Vicente Sos Baynat s/n. Castellón 12071 Spain
- Current address: Chair of Inorganic Chemistry IIRuhr-Universität Bochum 44801 Bochum Germany
| | - Gregorio Guisado‐Barrios
- Institute of Advanced Materials (INAM), Centro de Innovación en Química Avanzada (ORFEO-CINQA)Universitat Jaume I Av. Vicente Sos Baynat s/n. Castellón 12071 Spain
| | - Eduardo Peris
- Institute of Advanced Materials (INAM), Centro de Innovación en Química Avanzada (ORFEO-CINQA)Universitat Jaume I Av. Vicente Sos Baynat s/n. Castellón 12071 Spain
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36
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Martínez‐Agramunt V, Eder T, Darmandeh H, Guisado‐Barrios G, Peris E. A Size‐Flexible Organometallic Box for the Encapsulation of Fullerenes. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201901586] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Victor Martínez‐Agramunt
- Institute of Advanced Materials (INAM), Centro de Innovación en Química Avanzada (ORFEO-CINQA)Universitat Jaume I Av. Vicente Sos Baynat s/n. Castellón 12071 Spain
| | - Tobias Eder
- Institute of Advanced Materials (INAM), Centro de Innovación en Química Avanzada (ORFEO-CINQA)Universitat Jaume I Av. Vicente Sos Baynat s/n. Castellón 12071 Spain
- Current address: Institut für Anorganische und Analytische ChemieWestfälische Wilhelms-Universität Münster 48149 Münster Germany
| | - Heidar Darmandeh
- Institute of Advanced Materials (INAM), Centro de Innovación en Química Avanzada (ORFEO-CINQA)Universitat Jaume I Av. Vicente Sos Baynat s/n. Castellón 12071 Spain
- Current address: Chair of Inorganic Chemistry IIRuhr-Universität Bochum 44801 Bochum Germany
| | - Gregorio Guisado‐Barrios
- Institute of Advanced Materials (INAM), Centro de Innovación en Química Avanzada (ORFEO-CINQA)Universitat Jaume I Av. Vicente Sos Baynat s/n. Castellón 12071 Spain
| | - Eduardo Peris
- Institute of Advanced Materials (INAM), Centro de Innovación en Química Avanzada (ORFEO-CINQA)Universitat Jaume I Av. Vicente Sos Baynat s/n. Castellón 12071 Spain
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37
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Reiner BR, Kassie AA, Wade CR. Unveiling reactive metal sites in a Pd pincer MOF: insights into Lewis acid and pore selective catalysis. Dalton Trans 2019; 48:9588-9595. [PMID: 30460958 DOI: 10.1039/c8dt03801e] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
NOBF4 enables efficient oxidative ligand exchange in a Pd pincer MOF, generating a highly active and recyclable Lewis acid catalyst.
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Affiliation(s)
- Benjamin R. Reiner
- Department of Chemistry and Biochemistry
- 100 West 18th Ave
- The Ohio State University
- Columbus
- USA
| | - Abebu A. Kassie
- Department of Chemistry and Biochemistry
- 100 West 18th Ave
- The Ohio State University
- Columbus
- USA
| | - Casey R. Wade
- Department of Chemistry and Biochemistry
- 100 West 18th Ave
- The Ohio State University
- Columbus
- USA
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38
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Xie XY, Wu F, Liu X, Tao WQ, Jiang Y, Liu XQ, Sun LB. Photopolymerization of metal–organic polyhedra: an efficient approach to improve the hydrostability, dispersity, and processability. Chem Commun (Camb) 2019; 55:6177-6180. [DOI: 10.1039/c9cc01745c] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Metal–organic polyhedra are covalently linked by flexible polymer chains through photopolymerization, endowing the materials with enhanced processability, dispersity, and hydrostability.
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Affiliation(s)
- Xiao-Yan Xie
- State Key Laboratory of Materials-Oriented Chemical Engineering
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM)
- College of Chemical Engineering
- Nanjing Tech University
- Nanjing 211816
| | - Fan Wu
- State Key Laboratory of Materials-Oriented Chemical Engineering
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM)
- College of Chemical Engineering
- Nanjing Tech University
- Nanjing 211816
| | - Xin Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM)
- College of Chemical Engineering
- Nanjing Tech University
- Nanjing 211816
| | - Wei-Qiang Tao
- State Key Laboratory of Materials-Oriented Chemical Engineering
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM)
- College of Chemical Engineering
- Nanjing Tech University
- Nanjing 211816
| | - Yao Jiang
- State Key Laboratory of Materials-Oriented Chemical Engineering
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM)
- College of Chemical Engineering
- Nanjing Tech University
- Nanjing 211816
| | - Xiao-Qin Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM)
- College of Chemical Engineering
- Nanjing Tech University
- Nanjing 211816
| | - Lin-Bing Sun
- State Key Laboratory of Materials-Oriented Chemical Engineering
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM)
- College of Chemical Engineering
- Nanjing Tech University
- Nanjing 211816
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39
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Butler PWV, Kruger PE, Ward JS. Self-assembly of M4L4tetrahedral cages incorporating pendant PS and PSe functionalised ligands. Chem Commun (Camb) 2019; 55:10304-10307. [DOI: 10.1039/c9cc05443j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis and study of metal–organic tetrahedral cages incorporating flexible thio- and selenophosphate-based ligands.
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Affiliation(s)
| | - Paul E. Kruger
- School of Physical and Chemical Sciences
- University of Canterbury
- Christchurch
- New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology
| | - Jas S. Ward
- Department of Chemistry
- Nanoscience Center
- University of Jyväskylä
- Jyväskylä 40014
- Finland
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40
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Li L, Craze AR, Mustonen O, Zenno H, Whittaker JJ, Hayami S, Lindoy LF, Marjo CE, Clegg JK, Aldrich-Wright JR, Li F. A mixed-spin spin-crossover thiozolylimine [Fe4L6]8+ cage. Dalton Trans 2019; 48:9935-9938. [DOI: 10.1039/c9dt01947b] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A mixed-spin spin-crossover thiozolylimine [Fe4L6]8+ tetrahedral cage is reported.
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Affiliation(s)
- Li Li
- School of Science and Health
- Western Sydney University
- Penrith
- Australia
| | | | - Outi Mustonen
- Mark Wainwright Analytical Centre
- University of New South Wales
- Kensington
- Australia
| | - Hikaru Zenno
- Department of Chemistry
- Graduate School of Science and Technology
- Kumamoto University
- Chuo-ku
- Japan
| | - Jacob J. Whittaker
- School of Chemistry and Molecular Biosciences
- The University of Queensland
- Brisbane St Lucia
- Australia
| | - Shinya Hayami
- Department of Chemistry
- Graduate School of Science and Technology
- Kumamoto University
- Chuo-ku
- Japan
| | | | - Christopher E. Marjo
- Mark Wainwright Analytical Centre
- University of New South Wales
- Kensington
- Australia
| | - Jack K. Clegg
- School of Chemistry and Molecular Biosciences
- The University of Queensland
- Brisbane St Lucia
- Australia
| | | | - Feng Li
- School of Science and Health
- Western Sydney University
- Penrith
- Australia
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41
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Percástegui EG, Mosquera J, Ronson TK, Plajer AJ, Kieffer M, Nitschke JR. Waterproof architectures through subcomponent self-assembly. Chem Sci 2018; 10:2006-2018. [PMID: 30881630 PMCID: PMC6385555 DOI: 10.1039/c8sc05085f] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Accepted: 12/12/2018] [Indexed: 11/21/2022] Open
Abstract
Construction of metal–organic containers that are soluble and stable in water can be challenging – we present diverse strategies that allow the synthesis of kinetically robust water-soluble architectures via subcomponent self-assembly.
Metal–organic containers are readily prepared through self-assembly, but achieving solubility and stability in water remains challenging due to ligand insolubility and the reversible nature of the self-assembly process. Here we have developed conditions for preparing a broad range of architectures that are both soluble and kinetically stable in water through metal(ii)-templated (MII = CoII, NiII, ZnII, CdII) subcomponent self-assembly. Although these structures are composed of hydrophobic and poorly-soluble subcomponents, sulfate counterions render them water-soluble, and they remain intact indefinitely in aqueous solution. Two strategies are presented. Firstly, stability increased with metal–ligand bond strength, maximising when NiII was used as a template. Architectures that disassembled when CoII, ZnII and CdII templates were employed could be directly prepared from NiSO4 in water. Secondly, a higher density of connections between metals and ligands within a structure, considering both ligand topicity and degree of metal chelation, led to increased stability. When tritopic amines were used to build highly chelating ligands around ZnII and CdII templates, cryptate-like water-soluble structures were formed using these labile ions. Our synthetic platform provides a unified understanding of the elements of aqueous stability, allowing predictions of the stability of metal–organic cages that have not yet been prepared.
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Affiliation(s)
| | - Jesús Mosquera
- Department of Chemistry , University of Cambridge , Lensfield Road , CB2 1EW , UK .
| | - Tanya K Ronson
- Department of Chemistry , University of Cambridge , Lensfield Road , CB2 1EW , UK .
| | - Alex J Plajer
- Department of Chemistry , University of Cambridge , Lensfield Road , CB2 1EW , UK .
| | - Marion Kieffer
- Department of Chemistry , University of Cambridge , Lensfield Road , CB2 1EW , UK .
| | - Jonathan R Nitschke
- Department of Chemistry , University of Cambridge , Lensfield Road , CB2 1EW , UK .
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42
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Abstract
Coordination-driven self-assembly can produce large, symmetrical, hollow cages that are synthetically easy to access. The functions provided by these aesthetically attractive structures provide a driving force for their development, enabling practical applications. For instance, cages have provided new methods of molecular recognition, chirality sensing, separations, stabilization of reactive species, and catalysis. We have fruitfully employed subcomponent self-assembly to prepare metal-organic capsules from simple building blocks via the simultaneous formation of dynamic coordinative (N→metal) and covalent (N═C) bonds. Design strategies employ multidentate pyridyl-imine ligands to define either the edges or the faces of polyhedral structures. Octahedral metal ions, such as FeII, CoII, NiII, ZnII, and CdII, constitute the vertices. The generality of this technique has enabled the preparation of capsules with diverse three-dimensional structures. This Account highlights how fundamental investigations into the host-guest chemistry of capsules prepared through subcomponent self-assembly have led to the design of useful functions and new applications. We start by discussing simple host-guest systems involving a single capsule and continue to systems that include multiple capsules and guests, whose interactions give rise to complex functional behavior. Many of the capsules presented herein bind varied neutral guests, including aromatic or aliphatic molecules, biomolecules, and fullerenes. Binding selectivity is influenced by solvent effects, weak non-covalent interactions between hosts and guests, and the size, shape, flexibility, and degree of surface enclosure of the inner spaces of the capsules. Some hosts are able to adaptively rearrange structurally or express a different ratio of cage diastereomers to optimize the guest binding ability of the system. In other cases the bound guest can be either protected from degradation or catalytically transformed through encapsulation. Other capsules bind anions, most often in organic solvents and occasionally in water. Complexation is usually driven by a combination of electrostatic interactions, hydrogen bonding, and coordination to additional metal centers. Anion binding can also induce cage diastereomeric reconfiguration in a similar manner to some neutral guests, illustrating the general ability of subcomponent self-assembled capsules to respond to stimuli due to their dynamic nature. Capsules have been developed as supramolecular extractants for the selective removal of anions from water and as channels for transporting anions through planar lipid bilayers and into vesicles. Different capsules may work together, allowing for functions more complex than those achievable within single host-guest systems. Incorporation of stimuli-responsive capsules into multicage systems allows individual capsules within the network to be addressed and may allow signals to be passed between network members. We first present strategies to achieve selective guest binding and controlled guest release using mixtures of capsules with varied affinities for guests and different stabilities toward external stimuli. We then discuss strategies to separate capsules with encapsulated cargos via selective phase transfer, where the solvent affinities of capsules change as a result of anion exchange or post-assembly modification. The knowledge gained from these multicage systems may lead to the design of synthetic systems that can perform complex tasks in biomimetic fashion, paving the way for new supramolecular technologies to address practical problems.
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Affiliation(s)
- Dawei Zhang
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - Tanya K. Ronson
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - Jonathan R. Nitschke
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
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43
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Miller TF, Holloway LR, Nye PP, Lyon Y, Beran GJO, Harman WH, Julian RR, Hooley RJ. Small Structural Variations Have Large Effects on the Assembly Properties and Spin State of Room Temperature High Spin Fe(II) Iminopyridine Cages. Inorg Chem 2018; 57:13386-13396. [DOI: 10.1021/acs.inorgchem.8b01973] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tabitha F. Miller
- Department of Chemistry, University of California—Riverside, Riverside, California 92521, United States
| | - Lauren R. Holloway
- Department of Chemistry, University of California—Riverside, Riverside, California 92521, United States
| | - Phoebe P. Nye
- Department of Chemistry, University of California—Riverside, Riverside, California 92521, United States
| | - Yana Lyon
- Department of Chemistry, University of California—Riverside, Riverside, California 92521, United States
| | - Gregory J. O. Beran
- Department of Chemistry, University of California—Riverside, Riverside, California 92521, United States
| | - W. Hill Harman
- Department of Chemistry, University of California—Riverside, Riverside, California 92521, United States
| | - Ryan R. Julian
- Department of Chemistry, University of California—Riverside, Riverside, California 92521, United States
| | - Richard J. Hooley
- Department of Chemistry, University of California—Riverside, Riverside, California 92521, United States
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44
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Ruigrok van der Werve A, van Dijk YR, Mooibroek TJ. π-Hole/n→π* interactions with acetonitrile in crystal structures. Chem Commun (Camb) 2018; 54:10742-10745. [PMID: 30191212 DOI: 10.1039/c8cc06797j] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
A thorough analysis of the Cambridge Structure Database shows that π-hole/n→π* interactions with acetonitrile are abundant in the solid state, particularly when acetonitrile is coordinated to a metal. The interaction is weakly directional (P ≤ 1.5) and high level computations suggest a complexation energy of about -5 kcal mol-1.
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Affiliation(s)
- Ad Ruigrok van der Werve
- van't Hoff Institute for Molecular Sciences, Universiteit van Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands.
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45
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Li FZ, Mei L, Wu QY, Tian Y, Hu KQ, Ge YC, Liu N, Gibson JK, Chai ZF, Shi WQ. An Insight into Adaptive Deformation of Rigid Cucurbit[6]uril Host in Symmetric [2]Pseudorotaxanes. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800964] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Fei-ze Li
- Key Laboratory of Radiation Physics and Technology (Sichuan University); Ministry of Education; Institute of Nuclear Science and Technology; Sichuan University; 610064 Chengdu P. R. China
- Laboratory of Nuclear Energy Chemistry; Institute of High Energy Physics; Chinese Academy of Sciences; 100049 Beijing P. R. China
| | - Lei Mei
- Laboratory of Nuclear Energy Chemistry; Institute of High Energy Physics; Chinese Academy of Sciences; 100049 Beijing P. R. China
| | - Qun-yan Wu
- Laboratory of Nuclear Energy Chemistry; Institute of High Energy Physics; Chinese Academy of Sciences; 100049 Beijing P. R. China
| | - Yin Tian
- Institute of High Energy Physics; Southwestern Institute of Physics; 610041 Chengdu P. R. China
| | - Kong-qiu Hu
- Laboratory of Nuclear Energy Chemistry; Institute of High Energy Physics; Chinese Academy of Sciences; 100049 Beijing P. R. China
| | - Yun-chen Ge
- Laboratory of Nuclear Energy Chemistry; Institute of High Energy Physics; Chinese Academy of Sciences; 100049 Beijing P. R. China
| | - Ning Liu
- Key Laboratory of Radiation Physics and Technology (Sichuan University); Ministry of Education; Institute of Nuclear Science and Technology; Sichuan University; 610064 Chengdu P. R. China
| | - John K. Gibson
- Chemical Sciences Division; Institute of High Energy Physics; Lawrence Berkeley National Laboratory; 94720 Berkeley California USA
| | - Zhi-fang Chai
- Laboratory of Nuclear Energy Chemistry; Institute of High Energy Physics; Chinese Academy of Sciences; 100049 Beijing P. R. China
| | - Wei-qun Shi
- Laboratory of Nuclear Energy Chemistry; Institute of High Energy Physics; Chinese Academy of Sciences; 100049 Beijing P. R. China
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46
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Brock AJ, Whittaker JJ, Powell JA, Pfrunder MC, Grosjean A, Parsons S, McMurtrie JC, Clegg JK. Elastically Flexible Crystals have Disparate Mechanisms of Molecular Movement Induced by Strain and Heat. Angew Chem Int Ed Engl 2018; 57:11325-11328. [PMID: 29998602 DOI: 10.1002/anie.201806431] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Indexed: 12/28/2022]
Abstract
Elastically flexible crystals form an emerging class of materials that exhibit a range of notable properties. The mechanism of thermal expansion in flexible crystals of bis(acetylacetonato)copper(II) is compared with the mechanism of molecular motion induced by bending and it is demonstrated that the two mechanisms are distinct. Upon bending, individual molecules within the crystal structure reversibly rotate, while thermal expansion results predominantly in an increase in intermolecular separations with only minor changes to molecular orientation through rotation.
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Affiliation(s)
- Aidan J Brock
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Jacob J Whittaker
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Joshua A Powell
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Michael C Pfrunder
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Arnaud Grosjean
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia
| | - Simon Parsons
- Centre for Science at Extreme Conditions, University of Edinburgh, Edinburgh, EH9 3FJ, UK
| | - John C McMurtrie
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, 2 George St, Brisbane, QLD, 4000, Australia
| | - Jack K Clegg
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD, 4072, Australia
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47
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Brock AJ, Whittaker JJ, Powell JA, Pfrunder MC, Grosjean A, Parsons S, McMurtrie JC, Clegg JK. Elastically Flexible Crystals have Disparate Mechanisms of Molecular Movement Induced by Strain and Heat. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201806431] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Aidan J. Brock
- School of Chemistry and Molecular Biosciences The University of Queensland Brisbane QLD 4072 Australia
| | - Jacob J. Whittaker
- School of Chemistry and Molecular Biosciences The University of Queensland Brisbane QLD 4072 Australia
| | - Joshua A. Powell
- School of Chemistry and Molecular Biosciences The University of Queensland Brisbane QLD 4072 Australia
| | - Michael C. Pfrunder
- School of Chemistry and Molecular Biosciences The University of Queensland Brisbane QLD 4072 Australia
| | - Arnaud Grosjean
- School of Molecular Sciences The University of Western Australia 35 Stirling Highway Crawley WA 6009 Australia
| | - Simon Parsons
- Centre for Science at Extreme Conditions University of Edinburgh Edinburgh EH9 3FJ UK
| | - John C. McMurtrie
- School of Chemistry, Physics and Mechanical Engineering Queensland University of Technology 2 George St Brisbane QLD 4000 Australia
| | - Jack K. Clegg
- School of Chemistry and Molecular Biosciences The University of Queensland Brisbane QLD 4072 Australia
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48
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Bogie PM, Holloway LR, Lyon Y, Onishi NC, Beran GJO, Julian RR, Hooley RJ. A Springloaded Metal-Ligand Mesocate Allows Access to Trapped Intermediates of Self-Assembly. Inorg Chem 2018; 57:4155-4163. [DOI: 10.1021/acs.inorgchem.8b00370] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Paul M. Bogie
- Department of Chemistry, University of California-Riverside, Riverside, California 92521, United States
| | - Lauren R. Holloway
- Department of Chemistry, University of California-Riverside, Riverside, California 92521, United States
| | - Yana Lyon
- Department of Chemistry, University of California-Riverside, Riverside, California 92521, United States
| | - Nicole C. Onishi
- Department of Chemistry, University of California-Riverside, Riverside, California 92521, United States
| | - Gregory J. O. Beran
- Department of Chemistry, University of California-Riverside, Riverside, California 92521, United States
| | - Ryan R. Julian
- Department of Chemistry, University of California-Riverside, Riverside, California 92521, United States
| | - Richard J. Hooley
- Department of Chemistry, University of California-Riverside, Riverside, California 92521, United States
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49
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Eytel LM, Brueckner AC, Lohrman JA, Haley MM, Cheong PHY, Johnson DW. Conformationally flexible arylethynyl bis-urea receptors bind disparate oxoanions with similar, high affinities. Chem Commun (Camb) 2018; 54:13208-13211. [DOI: 10.1039/c8cc07301e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Despite competing trends and computational predictions to the contrary, three bis-urea receptors bind disparate oxoanions (ClO4−, HSO4−, H2PO4−) with equal affinities in a non-polar solvent; in a more polar solvent the trend in association constants for one receptor matches that of the pKb of the guest, as expected for H-bond donating hosts.
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Affiliation(s)
- Lisa M. Eytel
- Department of Chemistry & Biochemistry and the Materials Science Institute, University of Oregon
- Eugene
- USA
| | | | - Jessica A. Lohrman
- Department of Chemistry & Biochemistry and the Materials Science Institute, University of Oregon
- Eugene
- USA
| | - Michael M. Haley
- Department of Chemistry & Biochemistry and the Materials Science Institute, University of Oregon
- Eugene
- USA
| | | | - Darren W. Johnson
- Department of Chemistry & Biochemistry and the Materials Science Institute, University of Oregon
- Eugene
- USA
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50
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Naskar S, Jana B, Ghosh P. Anion-dependent thermo-responsive supramolecular superstructures of Cu(ii) macrocycles. Dalton Trans 2018; 47:5734-5742. [DOI: 10.1039/c8dt00683k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
A heteroditopic ligand predominantly self-assembled into a dinuclear Cu(ii) macrocycle with various Cu2+ salts. However, each macrocycle is further hierarchically assembled to distinct supramolecular superstructures, where the shape of the morphology is found to be highly dependent on the counter-anions and temperature.
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Affiliation(s)
- Sourenjit Naskar
- Department of Inorganic Chemistry
- Indian Association for the Cultivation of Science
- Kolkata 700 032
- India
| | - Barun Jana
- Department of Inorganic Chemistry
- Indian Association for the Cultivation of Science
- Kolkata 700 032
- India
| | - Pradyut Ghosh
- Department of Inorganic Chemistry
- Indian Association for the Cultivation of Science
- Kolkata 700 032
- India
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