51
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Komulainen S, Roukala J, Zhivonitko VV, Javed MA, Chen L, Holden D, Hasell T, Cooper A, Lantto P, Telkki VV. Inside information on xenon adsorption in porous organic cages by NMR. Chem Sci 2017; 8:5721-5727. [PMID: 28989612 PMCID: PMC5621166 DOI: 10.1039/c7sc01990d] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Accepted: 06/14/2017] [Indexed: 11/21/2022] Open
Abstract
A solid porous molecular crystal formed from an organic cage, CC3, has unprecedented performance for the separation of rare gases. Here, xenon was used as an internal reporter providing extraordinarily versatile information about the gas adsorption phenomena in the cage and window cavities of the material. 129Xe NMR measurements combined with state-of-the-art quantum chemical calculations allowed the determination of the occupancies of the cavities, binding constants, thermodynamic parameters as well as the exchange rates of Xe between the cavities. Chemical exchange saturation transfer (CEST) experiments revealed a minor window cavity site with a significantly lower exchange rate than other sites. Diffusion measurements showed significantly reduced mobility of xenon with loading. 129Xe spectra also revealed that the cage cavity sites are preferred at lower loading levels, due to more favourable binding, whereas window sites come to dominate closer to saturation because of their greater prevalence.
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Affiliation(s)
- Sanna Komulainen
- NMR Research Unit , University of Oulu , P.O.Box 3000 , 90014 Oulu , Finland .
| | - Juho Roukala
- NMR Research Unit , University of Oulu , P.O.Box 3000 , 90014 Oulu , Finland .
| | - Vladimir V Zhivonitko
- Laboratory of Magnetic Resonance Microimaging , International Tomography Center SB RAS , Department of Natural Sciences , Novosibirsk State University , Instututskaya St. 3A, Pirogova St. 2 , 630090 Novosibirsk , Russia
| | | | - Linjiang Chen
- Department of Chemistry , Centre for Materials Discovery , University of Liverpool , Crown Street , Liverpool L69 7ZD , UK
| | - Daniel Holden
- Department of Chemistry , Centre for Materials Discovery , University of Liverpool , Crown Street , Liverpool L69 7ZD , UK
| | - Tom Hasell
- Department of Chemistry , Centre for Materials Discovery , University of Liverpool , Crown Street , Liverpool L69 7ZD , UK
| | - Andrew Cooper
- Department of Chemistry , Centre for Materials Discovery , University of Liverpool , Crown Street , Liverpool L69 7ZD , UK
| | - Perttu Lantto
- NMR Research Unit , University of Oulu , P.O.Box 3000 , 90014 Oulu , Finland .
| | - Ville-Veikko Telkki
- NMR Research Unit , University of Oulu , P.O.Box 3000 , 90014 Oulu , Finland .
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52
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Percástegui EG, Mosquera J, Nitschke JR. Anion Exchange Renders Hydrophobic Capsules and Cargoes Water-Soluble. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201705093] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
| | - Jesús Mosquera
- Department of Chemistry; University of Cambridge; Lensfield Road Cambridge CB2 1EW UK
| | - Jonathan R. Nitschke
- Department of Chemistry; University of Cambridge; Lensfield Road Cambridge CB2 1EW UK
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53
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Preston D, White KF, Lewis JEM, Vasdev RAS, Abrahams BF, Crowley JD. Solid-State Gas Adsorption Studies with Discrete Palladium(II) [Pd 2 (L) 4 ] 4+ Cages. Chemistry 2017; 23:10559-10567. [PMID: 28508442 DOI: 10.1002/chem.201701477] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Indexed: 01/03/2023]
Abstract
The need for effective CO2 capture systems remains high, and due to their tunability, metallosupramolecular architectures are an attractive option for gas sorption. While the use of extended metal organic frameworks for gas adsorption has been extensively explored, the exploitation of discrete metallocage architectures to bind gases remains in its infancy. Herein the solid state gas adsorption properties of a series of [Pd2 (L)4 ]4+ lantern shaped coordination cages (L = variants of 2,6-bis(pyridin-3-ylethynyl)pyridine), which had solvent accessible internal cavities suitable for gas binding, have been investigated. The cages showed little interaction with dinitrogen gas but were able to take up CO2 . The best performing cage reversibly sorbed 1.4 mol CO2 per mol cage at 298 K, and 2.3 mol CO2 per mol cage at 258 K (1 bar). The enthalpy of binding was calculated to be 25-35 kJ mol-1 , across the number of equivalents bound, while DFT calculations on the CO2 binding in the cage gave ΔE for the cage-CO2 interaction of 23-28 kJ mol-1 , across the same range. DFT modelling suggested that the binding mode is a hydrogen bond between the carbonyl oxygen of CO2 and the internally directed hydrogen atoms of the cage.
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Affiliation(s)
- Dan Preston
- Department of Chemistry, University of Otago, PO Box 56, Dunedin, New Zealand
| | - Keith F White
- School of Chemistry, University of Melbourne, Melbourne, Victoria, 3010, Australia
| | - James E M Lewis
- Department of Chemistry, University of Otago, PO Box 56, Dunedin, New Zealand
| | - Roan A S Vasdev
- Department of Chemistry, University of Otago, PO Box 56, Dunedin, New Zealand
| | - Brendan F Abrahams
- School of Chemistry, University of Melbourne, Melbourne, Victoria, 3010, Australia
| | - James D Crowley
- Department of Chemistry, University of Otago, PO Box 56, Dunedin, New Zealand
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54
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Percástegui EG, Mosquera J, Nitschke JR. Anion Exchange Renders Hydrophobic Capsules and Cargoes Water-Soluble. Angew Chem Int Ed Engl 2017; 56:9136-9140. [DOI: 10.1002/anie.201705093] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Indexed: 01/08/2023]
Affiliation(s)
| | - Jesús Mosquera
- Department of Chemistry; University of Cambridge; Lensfield Road Cambridge CB2 1EW UK
| | - Jonathan R. Nitschke
- Department of Chemistry; University of Cambridge; Lensfield Road Cambridge CB2 1EW UK
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55
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Zhang D, Ronson TK, Mosquera J, Martinez A, Guy L, Nitschke JR. Anion Binding in Water Drives Structural Adaptation in an Azaphosphatrane-Functionalized FeII4L4 Tetrahedron. J Am Chem Soc 2017; 139:6574-6577. [DOI: 10.1021/jacs.7b02950] [Citation(s) in RCA: 81] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dawei Zhang
- Department
of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
- Laboratoire
de Chimie, École Normale Supérieure de Lyon, CNRS, UCBL,
46 Allée d’Italie, F-69364 Lyon, France
| | - Tanya K. Ronson
- Department
of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Jesús Mosquera
- Department
of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | | | - Laure Guy
- Laboratoire
de Chimie, École Normale Supérieure de Lyon, CNRS, UCBL,
46 Allée d’Italie, F-69364 Lyon, France
| | - Jonathan R. Nitschke
- Department
of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
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56
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Wright JS, Metherell AJ, Cullen WM, Piper JR, Dawson R, Ward MD. Highly selective CO 2vs. N 2 adsorption in the cavity of a molecular coordination cage. Chem Commun (Camb) 2017; 53:4398-4401. [PMID: 28379231 DOI: 10.1039/c7cc01959a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Two M8L12 cubic coordination cages, as desolvated crystalline powders, preferentially adsorb CO2 over N2 with ideal selectivity CO2/N2 constants of 49 and 30 at 298 K. A binding site for CO2 is suggested by crystallographic location of CS2 within the cage cavity at an electropositive hydrogen-bond donor site, potentially explaining the high CO2/N2 selectivity compared to other materials with this level of porosity.
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Affiliation(s)
- James S Wright
- Department of Chemistry, University of Sheffield, Sheffield S3 7HF, UK.
| | | | - William M Cullen
- Department of Chemistry, University of Sheffield, Sheffield S3 7HF, UK.
| | - Jerico R Piper
- Department of Chemistry, University of Sheffield, Sheffield S3 7HF, UK.
| | - Robert Dawson
- Department of Chemistry, University of Sheffield, Sheffield S3 7HF, UK.
| | - Michael D Ward
- Department of Chemistry, University of Sheffield, Sheffield S3 7HF, UK.
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57
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Tatikonda R, Bertula K, Nonappa, Hietala S, Rissanen K, Haukka M. Bipyridine based metallogels: an unprecedented difference in photochemical and chemical reduction in the in situ nanoparticle formation. Dalton Trans 2017; 46:2793-2802. [PMID: 28174774 PMCID: PMC5777448 DOI: 10.1039/c6dt04253h] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Accepted: 02/02/2017] [Indexed: 12/19/2022]
Abstract
Metal co-ordination induced supramolecular gelation of low molecular weight organic ligands is a rapidly expanding area of research due to the potential in creating hierarchically self-assembled multi-stimuli responsive materials. In this context, structurally simple O-methylpyridine derivatives of 4,4'-dihydroxy-2,2'-bipyridine ligands are reported. Upon complexation with Ag(i) ions in aqueous dimethyl sulfoxide (DMSO) solutions the ligands spontaneously form metallosupramolecular gels at concentrations as low as 0.6 w/v%. The metal ions induce the self-assembly of three dimensional (3D) fibrillar networks followed by the spontaneous in situ reduction of the Ag-centers to silver nanoparticles (AgNPs) when exposed to daylight. Significant size and morphological differences of the AgNP's was observed between the standard chemical and photochemical reduction of the metallogels. The gelation ability, the nanoparticle formation and rheological properties were found to be depend on the ligand structure, while the strength of the gels is affected by the water content of the gels.
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Affiliation(s)
- Rajendhraprasad Tatikonda
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P. O. Box 35, FI-40014, Jyväskylä, Finland.
| | - Kia Bertula
- Department of Applied Physics, Molecular Materials Group, Aalto University School of Science, Puumiehenkuja 2, FI-02150, Espoo, Finland
| | - Nonappa
- Department of Applied Physics, Molecular Materials Group, Aalto University School of Science, Puumiehenkuja 2, FI-02150, Espoo, Finland
| | - Sami Hietala
- Department of Chemistry, University of Helsinki, P. O. Box 55, FI-00014, Helsinki, Finland
| | - Kari Rissanen
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P. O. Box 35, FI-40014, Jyväskylä, Finland.
| | - Matti Haukka
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P. O. Box 35, FI-40014, Jyväskylä, Finland.
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58
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Selent M, Nyman J, Roukala J, Ilczyszyn M, Oilunkaniemi R, Bygrave PJ, Laitinen R, Jokisaari J, Day GM, Lantto P. Clathrate Structure Determination by Combining Crystal Structure Prediction with Computational and Experimental 129 Xe NMR Spectroscopy. Chemistry 2017; 23:5258-5269. [PMID: 28111848 PMCID: PMC5763392 DOI: 10.1002/chem.201604797] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Indexed: 11/09/2022]
Abstract
An approach is presented for the structure determination of clathrates using NMR spectroscopy of enclathrated xenon to select from a set of predicted crystal structures. Crystal structure prediction methods have been used to generate an ensemble of putative structures of o- and m-fluorophenol, whose previously unknown clathrate structures have been studied by 129 Xe NMR spectroscopy. The high sensitivity of the 129 Xe chemical shift tensor to the chemical environment and shape of the crystalline cavity makes it ideal as a probe for porous materials. The experimental powder NMR spectra can be used to directly confirm or reject hypothetical crystal structures generated by computational prediction, whose chemical shift tensors have been simulated using density functional theory. For each fluorophenol isomer one predicted crystal structure was found, whose measured and computed chemical shift tensors agree within experimental and computational error margins and these are thus proposed as the true fluorophenol xenon clathrate structures.
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Affiliation(s)
- Marcin Selent
- NMR Research Unit, Faculty of Science, University of Oulu, 90014, Oulu, Finland.,Faculty of Chemistry, Wrocław University, Joliot Curie 14, 50-383, Wrocław, Poland
| | - Jonas Nyman
- Computational Systems Chemistry, School of Chemistry, University of Southampton, Southampton, UK
| | - Juho Roukala
- NMR Research Unit, Faculty of Science, University of Oulu, 90014, Oulu, Finland
| | - Marek Ilczyszyn
- Faculty of Chemistry, Wrocław University, Joliot Curie 14, 50-383, Wrocław, Poland
| | - Raija Oilunkaniemi
- Laboratory of Inorganic Chemistry, University of Oulu, 90014, Oulu, Finland
| | - Peter J Bygrave
- Computational Systems Chemistry, School of Chemistry, University of Southampton, Southampton, UK
| | - Risto Laitinen
- Laboratory of Inorganic Chemistry, University of Oulu, 90014, Oulu, Finland
| | - Jukka Jokisaari
- NMR Research Unit, Faculty of Science, University of Oulu, 90014, Oulu, Finland
| | - Graeme M Day
- Computational Systems Chemistry, School of Chemistry, University of Southampton, Southampton, UK
| | - Perttu Lantto
- NMR Research Unit, Faculty of Science, University of Oulu, 90014, Oulu, Finland
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59
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In vivo detection of cucurbit[6]uril, a hyperpolarized xenon contrast agent for a xenon magnetic resonance imaging biosensor. Sci Rep 2017; 7:41027. [PMID: 28106110 PMCID: PMC5247686 DOI: 10.1038/srep41027] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Accepted: 12/14/2016] [Indexed: 01/02/2023] Open
Abstract
The Hyperpolarized gas Chemical Exchange Saturation Transfer (HyperCEST) Magnetic Resonance (MR) technique has the potential to increase the sensitivity of a hyperpolarized xenon-129 MRI contrast agent. Signal enhancement is accomplished by selectively depolarizing the xenon within a cage molecule which, upon exchange, reduces the signal in the dissolved phase pool. Herein we demonstrate the in vivo detection of the cucurbit[6]uril (CB6) contrast agent within the vasculature of a living rat. Our work may be used as a stepping stone towards using the HyperCEST technique as a molecular imaging modality.
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60
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Mari E, Berthault P. 129Xe NMR-based sensors: biological applications and recent methods. Analyst 2017; 142:3298-3308. [DOI: 10.1039/c7an01088e] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Molecular systems that target analytes of interest and host spin-hyperpolarized xenon lead to powerful 129Xe NMR-based sensors.
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Affiliation(s)
- E. Mari
- NIMBE
- CEA
- CNRS
- Université de Paris Saclay
- CEA Saclay
| | - P. Berthault
- NIMBE
- CEA
- CNRS
- Université de Paris Saclay
- CEA Saclay
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61
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Britvin SN, Kashtanov SA, Krivovichev SV, Chukanov NV. Xenon in Rigid Oxide Frameworks: Structure, Bonding and Explosive Properties of Layered Perovskite K4Xe3O12. J Am Chem Soc 2016; 138:13838-13841. [DOI: 10.1021/jacs.6b09056] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sergey N. Britvin
- Department
of Crystallography, Saint-Petersburg State University, Universitetskaya
Nab. 7/9, 199034 St. Petersburg, Russia
| | - Sergei A. Kashtanov
- Institute
of Problems of Chemical Physics, Russian Academy of Sciences, 142432 Chernogolovka, Russia
| | - Sergey V. Krivovichev
- Department
of Crystallography, Saint-Petersburg State University, Universitetskaya
Nab. 7/9, 199034 St. Petersburg, Russia
| | - Nikita V. Chukanov
- Institute
of Problems of Chemical Physics, Russian Academy of Sciences, 142432 Chernogolovka, Russia
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62
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Giri C, Sahoo PK, Rissanen K, Mal P. Capturing Hydrophobic Trifluoroiodomethane in Water into an M
4
L
6
Cage. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600990] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Chandan Giri
- School of Chemical Sciences National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar P. O. Bhimpur‐Padanpur, Via Jatni 752050 Odisha District Khurda India
- University of Jyvaskyla Department of Chemistry Nanoscience Center P. O. Box. 35 40014 University of Jyvaskyla Finland
| | - Prasit Kumar Sahoo
- School of Chemical Sciences National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar P. O. Bhimpur‐Padanpur, Via Jatni 752050 Odisha District Khurda India
| | - Kari Rissanen
- University of Jyvaskyla Department of Chemistry Nanoscience Center P. O. Box. 35 40014 University of Jyvaskyla Finland
| | - Prasenjit Mal
- School of Chemical Sciences National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar P. O. Bhimpur‐Padanpur, Via Jatni 752050 Odisha District Khurda India
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63
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Kang YH, Liu XD, Yan N, Jiang Y, Liu XQ, Sun LB, Li JR. Fabrication of Isolated Metal–Organic Polyhedra in Confined Cavities: Adsorbents/Catalysts with Unusual Dispersity and Activity. J Am Chem Soc 2016; 138:6099-102. [DOI: 10.1021/jacs.6b01207] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Ying-Hu Kang
- State
Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu
National Synergetic Innovation Center for Advanced Materials (SICAM),
College of Chemistry and Chemical Engineering, Nanjing Tech University, Nanjing 210009, China
| | - Xiao-Dan Liu
- State
Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu
National Synergetic Innovation Center for Advanced Materials (SICAM),
College of Chemistry and Chemical Engineering, Nanjing Tech University, Nanjing 210009, China
| | - Ni Yan
- State
Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu
National Synergetic Innovation Center for Advanced Materials (SICAM),
College of Chemistry and Chemical Engineering, Nanjing Tech University, Nanjing 210009, China
| | - Yao Jiang
- State
Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu
National Synergetic Innovation Center for Advanced Materials (SICAM),
College of Chemistry and Chemical Engineering, Nanjing Tech University, Nanjing 210009, China
| | - Xiao-Qin Liu
- State
Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu
National Synergetic Innovation Center for Advanced Materials (SICAM),
College of Chemistry and Chemical Engineering, Nanjing Tech University, Nanjing 210009, China
| | - Lin-Bing Sun
- State
Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu
National Synergetic Innovation Center for Advanced Materials (SICAM),
College of Chemistry and Chemical Engineering, Nanjing Tech University, Nanjing 210009, China
| | - Jian-Rong Li
- Beijing
Key Laboratory for Green Catalysis and Separation, College of Environmental
and Energy Engineering, Beijing University of Technology, Beijing 100124, China
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64
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Mosquera J, Ronson TK, Nitschke JR. Subcomponent Flexibility Enables Conversion between D4-Symmetric CdII8L8 and T-Symmetric CdII4L4 Assemblies. J Am Chem Soc 2016; 138:1812-5. [DOI: 10.1021/jacs.5b12955] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Jesús Mosquera
- 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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65
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Qiu X, Zhong W, Bai C, Li Y. Encapsulation of a Metal–Organic Polyhedral in the Pores of a Metal–Organic Framework. J Am Chem Soc 2016; 138:1138-41. [DOI: 10.1021/jacs.5b12189] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xuan Qiu
- School of Chemistry and Chemical
Engineering, South China University of Technology, Guangzhou 510640, China
| | - Wei Zhong
- School of Chemistry and Chemical
Engineering, South China University of Technology, Guangzhou 510640, China
| | - Cuihua Bai
- School of Chemistry and Chemical
Engineering, South China University of Technology, Guangzhou 510640, China
| | - Yingwei Li
- School of Chemistry and Chemical
Engineering, South China University of Technology, Guangzhou 510640, China
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66
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Su J, Yao L, Zhang J, Yuan S, Xie F, Ding Y, Zhao M, Wang S, Li H, Zhang S, Wu J, Tian Y. A novel 2D infinite M 3L 2 cage-based Cd( ii) microporous coordination polymer with a tripodal carboxylic acid ligand and solvent-dependent luminescence properties. NEW J CHEM 2016. [DOI: 10.1039/c5nj02144h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel M3L2 cage-based microporous coordination polymer has an obvious, surface-enhanced luminescence in the solvents CH2Cl2 and CHCl3.
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67
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Bonakdarzadeh P, Pan F, Kalenius E, Jurček O, Rissanen K. Spontaneous Resolution of an Electron‐Deficient Tetrahedral Fe
4
L
4
cage. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201507295] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Pia Bonakdarzadeh
- Department of Chemistry, NanoScience Center, University of Jyväskylä, P.O. Box 35, FI‐40014 Jyväskylä (Finland)
| | - Fangfang Pan
- Department of Chemistry, NanoScience Center, University of Jyväskylä, P.O. Box 35, FI‐40014 Jyväskylä (Finland)
| | - Elina Kalenius
- Department of Chemistry, NanoScience Center, University of Jyväskylä, P.O. Box 35, FI‐40014 Jyväskylä (Finland)
| | - Ondřej Jurček
- Department of Chemistry, NanoScience Center, University of Jyväskylä, P.O. Box 35, FI‐40014 Jyväskylä (Finland)
| | - Kari Rissanen
- Department of Chemistry, NanoScience Center, University of Jyväskylä, P.O. Box 35, FI‐40014 Jyväskylä (Finland)
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68
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Bonakdarzadeh P, Pan F, Kalenius E, Jurček O, Rissanen K. Spontaneous Resolution of an Electron‐Deficient Tetrahedral Fe
4
L
4
cage. Angew Chem Int Ed Engl 2015; 54:14890-3. [DOI: 10.1002/anie.201507295] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Pia Bonakdarzadeh
- Department of Chemistry, NanoScience Center, University of Jyväskylä, P.O. Box 35, FI‐40014 Jyväskylä (Finland)
| | - Fangfang Pan
- Department of Chemistry, NanoScience Center, University of Jyväskylä, P.O. Box 35, FI‐40014 Jyväskylä (Finland)
| | - Elina Kalenius
- Department of Chemistry, NanoScience Center, University of Jyväskylä, P.O. Box 35, FI‐40014 Jyväskylä (Finland)
| | - Ondřej Jurček
- Department of Chemistry, NanoScience Center, University of Jyväskylä, P.O. Box 35, FI‐40014 Jyväskylä (Finland)
| | - Kari Rissanen
- Department of Chemistry, NanoScience Center, University of Jyväskylä, P.O. Box 35, FI‐40014 Jyväskylä (Finland)
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69
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Lewing D, Koppetz H, Hahn FE. Reversible Formation and Transmetalation of Schiff-Base Complexes in Subcomponent Self-Assembly Reactions. Inorg Chem 2015; 54:7653-9. [DOI: 10.1021/acs.inorgchem.5b01334] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Dennis Lewing
- Institut für Anorganische und Analytische Chemie, Westfälische Wilhelms-Universität Münster, Corrensstraße 28-30, 48149 Münster, Germany
| | - Hannah Koppetz
- Institut für Anorganische und Analytische Chemie, Westfälische Wilhelms-Universität Münster, Corrensstraße 28-30, 48149 Münster, Germany
| | - F. Ekkehardt Hahn
- Institut für Anorganische und Analytische Chemie, Westfälische Wilhelms-Universität Münster, Corrensstraße 28-30, 48149 Münster, Germany
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70
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Kunth M, Witte C, Hennig A, Schröder L. Identification, classification, and signal amplification capabilities of high-turnover gas binding hosts in ultra-sensitive NMR. Chem Sci 2015; 6:6069-6075. [PMID: 30090222 PMCID: PMC6055117 DOI: 10.1039/c5sc01400j] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Accepted: 07/05/2015] [Indexed: 12/20/2022] Open
Abstract
Nuclear Magnetic Resonance (NMR) can be a powerful tool for investigating exchange kinetics of host-guest interactions in solution. Beyond conventional direct NMR detection, radiofrequency (RF) saturation transfer can be used to enhance the study of such chemical exchange or to enable signal amplification from a dilute host. However, systems that are both dilute and labile (fast dissociation/re-association) impose specific challenges to direct as well as saturation transfer detection. Here we investigate host-guest systems under previously inaccessible conditions using saturation transfer techniques in combination with hyperpolarized nuclei and quantitative evaluation under different RF exposure. We further use that information to illustrate the consequences for signal amplification capabilities and correct interpretation of observed signal contrast from comparative exchange data of different types of hosts. In particular, we compare binding of xenon (Xe) to cucurbit[6]uril (CB6) with binding to cryptophane-A monoacid (CrA) in water as two different model systems. The Xe complexation with CB6 is extremely difficult to access by conventional NMR due to its low water solubility. We successfully quantified the exchange kinetics of this system and found that the absence of Xe signals related to encapsulated Xe in conventional hyperpolarized 129Xe NMR is due to line broadening and not due to low binding. By introducing a measure for the gas turnover during constant association-dissociation, we demonstrate that the signal amplification from a dilute pool of CB6 can turn this host into a very powerful contrast agent for Xe MRI applications (100-fold more efficient than cryptophane). However, labile systems only provide improved signal amplification for suitable saturation conditions and otherwise become disadvantageous. The method is applicable to many hosts where Xe is a suitable spy nucleus to probe for non-covalent interactions and should foster reinvestigation of several systems to delineate true absence of interaction from labile complex formation.
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Affiliation(s)
- Martin Kunth
- ERC Project BiosensorImaging , Leibniz-Institut für Molekulare Pharmakologie (FMP) , 13125 Berlin , Germany . ; Tel: +49 30 947 93 121
| | - Christopher Witte
- ERC Project BiosensorImaging , Leibniz-Institut für Molekulare Pharmakologie (FMP) , 13125 Berlin , Germany . ; Tel: +49 30 947 93 121
| | - Andreas Hennig
- Jacobs University Bremen , Department of Life Sciences and Chemistry , Campus Ring 1 , 28759 Bremen , Germany
| | - Leif Schröder
- ERC Project BiosensorImaging , Leibniz-Institut für Molekulare Pharmakologie (FMP) , 13125 Berlin , Germany . ; Tel: +49 30 947 93 121
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71
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Bonakdarzadeh P, Topić F, Kalenius E, Bhowmik S, Sato S, Groessl M, Knochenmuss R, Rissanen K. DOSY NMR, X-ray Structural and Ion-Mobility Mass Spectrometric Studies on Electron-Deficient and Electron-Rich M6L4 Coordination Cages. Inorg Chem 2015; 54:6055-61. [PMID: 26039343 DOI: 10.1021/acs.inorgchem.5b01082] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A novel modular approach to electron-deficient and electron-rich M6L4 cages is presented. From the same starting compound, via a minor modulation of the synthesis route, two C3-symmetric ligands L1 and L2 with different electronic properties are obtained in good yield. The trifluoro-triethynylbenzene-based ligand L1 is more electron-deficient than the well-known 2,4,6-tri(4-pyridyl)-1,3,5-triazine, while the trimethoxy-triethynylbenzene-based ligand L2 is more electron-rich than the corresponding benzene analogue. Complexation of the ligands with cis-protected square-planar [(dppp)Pt(OTf)2] or [(dppp)Pd(OTf)2] corner-complexes yields two electron-deficient (1a and 1b) and two electron-rich (2a and 2b) M6L4 cages. The single crystal X-ray diffraction study of 1a and 2a confirms the expected octahedral shape with a ca. 2000 Å(3) cavity and ca. 11 Å wide apertures. The crystallographically determined diameters of 1a and 2a are 3.7 and 3.6 nm, respectively. The hydrodynamic diameters obtained from the DOSY NMR in CDCl3:CD3OD (4:1), and diameters calculated from collision cross sections (CCS) acquired by ion-mobility mass spectrometry (IM-MS) were for all four cages similar. In solution, the cage structures have diameters between 3.3 to 3.6 nm, while in the gas phase the corresponding diameters varied between 3.4 to 3.6 nm. In addition to the structural information the relative stabilities of the Pt6L4 and Pd6L4 cages were studied in the gas phase by collision-induced dissociation (CID) experiments, and the photophysical properties of the ligands L1 and L2 and cages 1a, 1b, 2a, and 2b were studied by UV-vis and fluorescence spectroscopy.
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Affiliation(s)
- Pia Bonakdarzadeh
- †University of Jyväskylä, Department of Chemistry, Nanoscience Center, P.O. Box 35, FI-40014, University of Jyväskylä, Finland
| | - Filip Topić
- †University of Jyväskylä, Department of Chemistry, Nanoscience Center, P.O. Box 35, FI-40014, University of Jyväskylä, Finland
| | - Elina Kalenius
- †University of Jyväskylä, Department of Chemistry, Nanoscience Center, P.O. Box 35, FI-40014, University of Jyväskylä, Finland
| | - Sandip Bhowmik
- †University of Jyväskylä, Department of Chemistry, Nanoscience Center, P.O. Box 35, FI-40014, University of Jyväskylä, Finland
| | - Sota Sato
- ‡AIMR, Department of Chemistry, and JST ERATO, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
| | | | | | - Kari Rissanen
- †University of Jyväskylä, Department of Chemistry, Nanoscience Center, P.O. Box 35, FI-40014, University of Jyväskylä, Finland
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72
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Riddell IA, Ronson TK, Nitschke JR. Mutual stabilisation between M II4L 6 tetrahedra and M IIX 42- metallate guests. Chem Sci 2015; 6:3533-3537. [PMID: 28706711 PMCID: PMC5492872 DOI: 10.1039/c5sc01083g] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Accepted: 04/14/2015] [Indexed: 12/26/2022] Open
Abstract
A complex host-guest equilibrium employing metal ions incorporated into both the host and guest is discussed. MIIX42- metallate guests are shown to provide a good size and shape match for encapsulation within the M4L6 tetrahedral capsules, facilitating the generation of previously unreported Zn4L6 complexes. Displacement of the initial, primary template anion (ZnBr42-) by a secondary template anion (ClO4-) is shown to result in the formation of a pentagonal-prismatic Zn10L15 structure that incorporates both Br- and ClO4-. Furthermore, the formation of heterometallic complexes provides direct evidence for metal exchange between the guest and host complex.
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Affiliation(s)
- Imogen A Riddell
- Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge , CB2 1EW , UK .
| | - Tanya K Ronson
- Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge , CB2 1EW , UK .
| | - Jonathan R Nitschke
- Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge , CB2 1EW , UK .
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73
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Greaves CR, Alemán García MÁ, Bampos N. Preparation of a porphyrinic bis(pyridyl aldehyde) and its supramolecular complexes. Chem Commun (Camb) 2015; 51:15689-91. [DOI: 10.1039/c5cc06399j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A linear porphyrinic bis(pyridyl aldehyde), in combination with a linear bisphenanthroline, exclusively forms a square, heteroleptic metallosupramolecular grid.
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Affiliation(s)
| | | | - Nick Bampos
- Department of Chemistry
- University of Cambridge
- Cambridge CB2 1EW
- UK
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