1
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Mailhiot S, Peuravaara P, Egleston BD, Kearsey RJ, Mareš J, Komulainen S, Selent A, Kantola AM, Cooper AI, Vaara J, Greenaway RL, Lantto P, Telkki VV. Gas Uptake and Thermodynamics in Porous Liquids Elucidated by 129Xe NMR. J Phys Chem Lett 2024; 15:5323-5330. [PMID: 38724016 PMCID: PMC11129303 DOI: 10.1021/acs.jpclett.4c00223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 03/22/2024] [Accepted: 04/11/2024] [Indexed: 05/24/2024]
Abstract
We exploited 129Xe NMR to investigate xenon gas uptake and dynamics in a porous liquid formed by dissolving porous organic cages in a cavity-excluded solvent. Quantitative 129Xe NMR shows that when the amount of xenon added to the sample is lower than the amount of cages present (subsaturation), the porous liquid absorbs almost all xenon atoms from the gas phase, with 30% of the cages occupied with a Xe atom. A simple two-site exchange model enables an estimate of the chemical shift of 129Xe in the cages, which is in good agreement with the value provided by first-principles modeling. T2 relaxation times allow the determination of the exchange rate of Xe between the solvent and cage sites as well as the activation energies of the exchange. The 129Xe NMR analysis also enables determination of the free energy of confinement, and it shows that Xe binding is predominantly enthalpy-driven.
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Affiliation(s)
- Sarah
E. Mailhiot
- NMR
Research Unit, Faculty of Science, University
of Oulu, P.O.Box 3000, FI-90014 Oulu, Finland
| | - Petri Peuravaara
- NMR
Research Unit, Faculty of Science, University
of Oulu, P.O.Box 3000, FI-90014 Oulu, Finland
| | - Benjamin D. Egleston
- Department
of Chemistry, Molecular Sciences Research Hub, Imperial College London, London, W12 0BZ, U.K.
| | - Rachel J. Kearsey
- Department
of Chemistry and Materials Innovation Factory, University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K.
| | - Jiří Mareš
- NMR
Research Unit, Faculty of Science, University
of Oulu, P.O.Box 3000, FI-90014 Oulu, Finland
| | - Sanna Komulainen
- NMR
Research Unit, Faculty of Science, University
of Oulu, P.O.Box 3000, FI-90014 Oulu, Finland
| | - Anne Selent
- NMR
Research Unit, Faculty of Science, University
of Oulu, P.O.Box 3000, FI-90014 Oulu, Finland
| | - Anu M. Kantola
- NMR
Research Unit, Faculty of Science, University
of Oulu, P.O.Box 3000, FI-90014 Oulu, Finland
| | - Andrew I. Cooper
- Department
of Chemistry and Materials Innovation Factory, University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K.
| | - Juha Vaara
- NMR
Research Unit, Faculty of Science, University
of Oulu, P.O.Box 3000, FI-90014 Oulu, Finland
| | - Rebecca L. Greenaway
- Department
of Chemistry, Molecular Sciences Research Hub, Imperial College London, London, W12 0BZ, U.K.
| | - Perttu Lantto
- NMR
Research Unit, Faculty of Science, University
of Oulu, P.O.Box 3000, FI-90014 Oulu, Finland
| | - Ville-Veikko Telkki
- NMR
Research Unit, Faculty of Science, University
of Oulu, P.O.Box 3000, FI-90014 Oulu, Finland
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2
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Pham P, Hilty C. R2 Relaxometry of SABRE-Hyperpolarized Substrates at a Low Magnetic Field. Anal Chem 2023; 95:16911-16917. [PMID: 37931028 PMCID: PMC10862376 DOI: 10.1021/acs.analchem.3c02709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 10/17/2023] [Accepted: 10/18/2023] [Indexed: 11/08/2023]
Abstract
Nuclear magnetic resonance (NMR) relaxometry at a low magnetic field, in the milli-Tesla range or less, is enabled by signal enhancements through hyperpolarization. The parahydrogen-based method of signal amplification by reversible exchange (SABRE) provides large signals in a dilute liquid for the measurement of R2 relaxation using a single-scan Carr-Purcell-Meiboom-Gill (CPMG) experiment. A comparison of relaxation rates obtained at high and low fields indicates that an otherwise dominant contribution from chemical exchange is excluded in this low-field range. The SABRE process itself is based on exchange between the free and polarization transfer catalyst-bound forms of the substrate. At a high magnetic field of 9.4 T, typical conditions for producing hyperpolarization including 5 mM 5-fluoropyridine-3-carboximidamide as a substrate and 0.5 mM chloro(1,5-cyclooctadiene)[4,5-dimethyl-1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene]iridium(I) as a polarization transfer catalyst precursor resulted in an R2 relaxation rate as high as 3.38 s-1. This relaxation was reduced to 1.19 s-1 at 0.85 mT. A quantitative analysis of relaxation rates and line shapes indicates that milli-Tesla or lower magnetic fields are required to eliminate the exchange contribution. At this magnetic field strength, R2 relaxation rates are indicative primarily of molecular properties. R2 relaxometry may be used for investigating molecular interactions and dynamics. The SABRE hyperpolarization, which provides signal enhancements without requiring a high magnetic field or large instrumentation, is ideally suited to enable these applications.
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Affiliation(s)
- Pierce Pham
- Chemistry Department, Texas A&M University, College
Station, Texas 77843, United States
| | - Christian Hilty
- Chemistry Department, Texas A&M University, College
Station, Texas 77843, United States
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3
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Hilla P, Vaara J. NMR chemical shift of confined 129Xe: coordination number, paramagnetic channels and molecular dynamics in a cryptophane-A biosensor. Phys Chem Chem Phys 2023; 25:22719-22733. [PMID: 37606522 DOI: 10.1039/d3cp02695g] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/23/2023]
Abstract
Advances in hyperpolarisation and indirect detection have enabled the development of xenon nuclear magnetic resonance (NMR) biosensors (XBSs) for molecule-selective sensing in down to picomolar concentration. Cryptophanes (Crs) are popular cages for hosting the Xe "spy". Understanding the microscopic host-guest chemistry has remained a challenge in the XBS field. While early NMR computations of XBSs did not consider the important effects of host dynamics and explicit solvent, here we model the motionally averaged, relativistic NMR chemical shift (CS) of free Xe, Xe in a prototypic CrA cage and Xe in a water-soluble CrA derivative, each in an explicit H2O solvent, over system configurations generated at three different levels of molecular dynamics (MD) simulations. We confirm the "contact-type" character of the Xe CS, arising from the increased availability of paramagnetic channels, magnetic couplings between occupied and virtual orbitals through the short-ranged orbital hyperfine operator, when neighbouring atoms are in contact with Xe. Remarkably, the Xe CS in the present, highly dynamic and conformationally flexible situations is found to depend linearly on the coordination number of the Xe atom. We interpret the high- and low-CS situations in terms of the magnetic absorption spectrum and choose our preference among the used MD methods based on comparison with the experimental CS. We check the role of spin-orbit coupling by comparing with fully relativistic CS calculations. The study outlines the computational workflow required to realistically model the CS of Xe confined in dynamic cavity structures under experimental conditions, and contributes to microscopic understanding of XBSs.
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Affiliation(s)
- Perttu Hilla
- NMR Research Unit, P.O. Box 3000, FI-90014 University of Oulu, Finland.
| | - Juha Vaara
- NMR Research Unit, P.O. Box 3000, FI-90014 University of Oulu, Finland.
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4
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Saul P, Schröder L, Schmidt AB, Hövener JB. Nanomaterials for hyperpolarized nuclear magnetic resonance and magnetic resonance imaging. WILEY INTERDISCIPLINARY REVIEWS. NANOMEDICINE AND NANOBIOTECHNOLOGY 2023:e1879. [PMID: 36781151 DOI: 10.1002/wnan.1879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 01/03/2023] [Accepted: 01/07/2023] [Indexed: 02/15/2023]
Abstract
Nanomaterials play an important role in the development and application of hyperpolarized materials for magnetic resonance imaging (MRI). In this context they can not only act as hyperpolarized materials which are directly imaged but also play a role as carriers for hyperpolarized gases and catalysts for para-hydrogen induced polarization (PHIP) to generate hyperpolarized substrates for metabolic imaging. Those three application possibilities are discussed, focusing on carbon-based materials for the directly imaged particles. An overview over recent developments in all three fields is given, including the early developments in each field as well as important steps towards applications in MRI, such as making the initially developed methods more biocompatible and first imaging experiments with spatial resolution in either phantoms or in vivo studies. Focusing on the important features nanomaterials need to display to be applicable in the MRI context, a wide range of different approaches to that extent is covered, giving the reader a general idea of different possibilities as well as recent developments in those different fields of hyperpolarized magnetic resonance. This article is categorized under: Therapeutic Approaches and Drug Discovery > Emerging Technologies Diagnostic Tools > In Vivo Nanodiagnostics and Imaging.
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Affiliation(s)
- Philip Saul
- Section Biomedical Imaging, Molecular Imaging North Competence Center (MOIN CC), Department of Radiology and Neuroradiology, University Medical Center Schleswig-Holstein, Kiel University, Kiel, Germany
| | - Leif Schröder
- Division of Translational Molecular Imaging, Deutsches Krebsforschungszentrum (DKFZ), Heidelberg, Germany.,Molecular Imaging, Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Berlin, Germany
| | - Andreas B Schmidt
- Intergrative Biosciences (Ibio), Department of Chemistry, Karmanos Cancer Institute (KCI), Wayne State University, Detroit, Michigan, USA.,German Cancer Consortium (DKTK), Partner Site Freiburg, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Division of Medical Physics, Department of Radiology, Medical Center, University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Jan-Bernd Hövener
- Section Biomedical Imaging, Molecular Imaging North Competence Center (MOIN CC), Department of Radiology and Neuroradiology, University Medical Center Schleswig-Holstein, Kiel University, Kiel, Germany
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5
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Xenon Induces Its Own Preferred Heterochiral Host from Exclusive Homochiral Assembly. J Am Chem Soc 2022; 144:22884-22889. [PMID: 36480928 DOI: 10.1021/jacs.2c12202] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Xenon binding represents a formidable challenge, and efficient hosts remain rare. Here we report our findings that while enantiomeric bis(urea)-bis(thiourea) macrocycles form exclusive homochiral dimeric assemblies, xenon is able to overcome the narcissism and induces an otherwise-nonobservable heterochiral assembly as its preferred host. An experimental approach and fitting model were developed to obtain binding constants associated with the invisible assembly species. The determined xenon binding affinity with the heterochiral capsule reaches 1600 M-1, which is 15 times higher than that with the homochiral capsule and represents the highest record for an assembled host. The origin of the large difference in xenon affinity between the two subtle diastereotopic assemblies was revealed by single-crystal analysis. In the heterochiral capsule with S4 symmetry, the xenon atom is more tightly enclosed by van der Waals surroundings of the four thiourea groups arranged in a spherical cross-array, superior to the antiparallel array in the homochiral capsule with D2 symmetry.
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6
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Boventi M, Mauri M, Alexander F, James SL, Simonutti R, Castiglione F. Exploring cavities in Type II Porous Liquids with Xenon. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.121038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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7
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Krishnan K, Crawford JM, Thallapally PK, Carreon MA. Porous Organic Cages CC3 and CC2 as Adsorbents for the Separation of Carbon Dioxide from Nitrogen and Hydrogen. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c00146] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Keerthana Krishnan
- Chemical and Biological Engineering Department, Colorado School of Mines, Golden, Colorado 80401 United States
| | - James M. Crawford
- Chemical and Biological Engineering Department, Colorado School of Mines, Golden, Colorado 80401 United States
| | | | - Moises A. Carreon
- Chemical and Biological Engineering Department, Colorado School of Mines, Golden, Colorado 80401 United States
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8
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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] [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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9
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Abstract
Porous materials are ubiquitous systems with a large variety of applications from catalysis to polymer science, from soil to life science, from separation to building materials. Many relevant systems of biological or synthetic origin exhibit a hierarchy, defined as spatial organization over several length scales. Their characterization is often elusive, since many techniques can only be employed to probe a single length scale, like the nanometric or the micrometric levels. Moreover, some multiscale systems lack tridimensional order, further reducing the possibilities of investigation. 129Xe nuclear magnetic resonance (NMR) provides a unique and comprehensive description of multiscale porous materials by exploiting the adsorption and diffusion of xenon atoms. NMR parameters like chemical shift, relaxation times, and diffusion coefficient allow the probing of structures from a few angstroms to microns at the same time. Xenon can evaluate the size and shape of a variety of accessible volumes such as pores, layers, and tunnels, and the chemical nature of their surface. The dynamic nature of the probe provides a simultaneous exploration of different scales, informing on complex features such as the relative accessibility of different populations of pores. In this review, the basic principles of this technique will be presented along with some selected applications, focusing on its ability to characterize multiscale materials.
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10
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McKee NA, McKee ML. Evaluation of packing single and multiple atoms and molecules in the porous organic cage CC3- R. Phys Chem Chem Phys 2021; 23:19255-19268. [PMID: 34524296 DOI: 10.1039/d1cp01934a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The absorption of multiple atoms and molecules, including Kr, Xe, CH4, CO2, C2H2, H2O, and SF6, within CC3-R, a Porous Organic Cage (POC), was calculated and analyzed. The CC3-R molecule has one central cavity and four window sites. Most adsorbents were modeled with either one unit in the central cavity, four units in the window sites, or with five units in both sites. For Xe, the most favorable site was the central one. The CO2 molecule binds about 3 kcal mol-1 in free energy more strongly than CH4 in the central cavity of CC3-R at 300 K which may be enough to allow useful discrimination. Four C2H2 units and four CO2 units are calculated to bind similarly inside CC3-R (ΔH(298 K) = -8.6 and -7.7 kcal mol-1 per unit, respectively). Since H2O is smaller, more waters can easily fit inside. For twelve water molecules, the binding enthalpy per water is ΔH(298 K) = -16.4 kcal mol-1. For comparison, the binding enthalpy of (H2O)12 at the same level of theory (B3LYP/6-31G(d,p)-D3BJ//M06-2X/6-31G(d)) is predicted to be -12.3 kcal mol-1 per water. Finally, the dimerization of CC3-R and the association of CC3-R with CC3-S was studied as well as 3 to 9 iodine atoms enclosed in CC3-R.
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Affiliation(s)
- Nida A McKee
- Department of Chemistry and Biochemistry, Auburn, AL 36849, USA.
| | - Michael L McKee
- Department of Chemistry and Biochemistry, Auburn, AL 36849, USA.
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11
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Ramakrishna E, Tang JD, Tao JJ, Fang Q, Zhang Z, Huang J, Li S. Self-assembly of chiral BINOL cages via imine condensation. Chem Commun (Camb) 2021; 57:9088-9091. [PMID: 34498622 DOI: 10.1039/d1cc01507a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Condensation of an (S)- or (R)-BINOL-derived dialdehyde and tris(2-aminoethyl)amine produced chiral [2+3] imine cages, which were further reduced to furnish more stable chiral amine cages and applied in the enantioselective recognition of (1R,2R)- and (1S,2S)-1,2-diaminocyclohexane.
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Affiliation(s)
- E Ramakrishna
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China.
| | - Jia-Dong Tang
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China.
| | - Jia-Ju Tao
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China.
| | - Qiang Fang
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China. .,College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China.
| | - Zibin Zhang
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China.
| | - Jianying Huang
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China.
| | - Shijun Li
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China.
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12
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Ullah MS, Zhivonitko VV, Samoylenko A, Zhyvolozhnyi A, Viitala S, Kankaanpää S, Komulainen S, Schröder L, Vainio SJ, Telkki VV. Identification of extracellular nanoparticle subsets by nuclear magnetic resonance. Chem Sci 2021; 12:8311-8319. [PMID: 34221312 PMCID: PMC8221169 DOI: 10.1039/d1sc01402a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Accepted: 04/29/2021] [Indexed: 01/08/2023] Open
Abstract
Exosomes are a subset of secreted lipid envelope-encapsulated extracellular vesicles (EVs) of 50-150 nm diameter that can transfer cargo from donor to acceptor cells. In the current purification protocols of exosomes, many smaller and larger nanoparticles such as lipoproteins, exomers and microvesicles are typically co-isolated as well. Particle size distribution is one important characteristics of EV samples, as it reflects the cellular origin of EVs and the purity of the isolation. However, most of the physicochemical analytical methods today cannot illustrate the smallest exosomes and other small particles like the exomers. Here, we demonstrate that diffusion ordered spectroscopy (DOSY) nuclear magnetic resonance (NMR) method enables the determination of a very broad distribution of extracellular nanoparticles, ranging from 1 to 500 nm. The range covers sizes of all particles included in EV samples after isolation. The method is non-invasive, as it does not require any labelling or other chemical modification. We investigated EVs secreted from milk as well as embryonic kidney and renal carcinoma cells. Western blot analysis and immuno-electron microscopy confirmed expression of exosomal markers such as ALIX, TSG101, CD81, CD9, and CD63 in the EV samples. In addition to the larger particles observed by nanoparticle tracking analysis (NTA) in the range of 70-500 nm, the DOSY distributions include a significant number of smaller particles in the range of 10-70 nm, which are visible also in transmission electron microscopy images but invisible in NTA. Furthermore, we demonstrate that hyperpolarized chemical exchange saturation transfer (Hyper-CEST) with 129Xe NMR indicates also the existence of smaller and larger nanoparticles in the EV samples, providing also additional support for DOSY results. The method implies also that the Xe exchange is significantly faster in the EV pool than in the lipoprotein/exomer pool.
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Affiliation(s)
| | | | - Anatoliy Samoylenko
- Laboratory of Developmental Biology, Infotech Oulu, Oulu Center for Cell-Matrix Research, Kvantum Institute, Faculty of Biochemistry and Molecular Medicine Oulu Finland
| | - Artem Zhyvolozhnyi
- Laboratory of Developmental Biology, Infotech Oulu, Oulu Center for Cell-Matrix Research, Kvantum Institute, Faculty of Biochemistry and Molecular Medicine Oulu Finland
| | - Sirja Viitala
- Production Systems, Natural Resources Institute Finland (Luke) Jokioinen Finland
| | - Santeri Kankaanpää
- Production Systems, Natural Resources Institute Finland (Luke) Jokioinen Finland
| | | | - Leif Schröder
- Molecular Imaging, Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP) Berlin Germany
- Division of Translational Molecular Imaging, German Cancer Research Center (DKFZ) Heidelberg Germany
| | - Seppo J Vainio
- Laboratory of Developmental Biology, Infotech Oulu, Oulu Center for Cell-Matrix Research, Kvantum Institute, Faculty of Biochemistry and Molecular Medicine Oulu Finland
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13
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Ding Y, Alimi LO, Moosa B, Maaliki C, Jacquemin J, Huang F, Khashab NM. Selective adsorptive separation of cyclohexane over benzene using thienothiophene cages. Chem Sci 2021; 12:5315-5318. [PMID: 34163764 PMCID: PMC8179544 DOI: 10.1039/d1sc00440a] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
The selective separation of benzene (Bz) and cyclohexane (Cy) is one of the most challenging chemical separations in the petrochemical and oil industries. In this work, we report an environmentally friendly and energy saving approach to separate Cy over Bz using thienothiophene cages (ThT-cages) with adaptive porosity. Interestingly, cyclohexane was readily captured selectively from an equimolar benzene/cyclohexane mixture with a purity of 94%. This high selectivity arises from the C–H⋯S, C–H⋯π and C–H⋯N interactions between Cy and the thienothiophene ligand. Reversible transformation between the nonporous guest-free structure and the host–guest assembly, endows this system with excellent recyclability with minimal energy requirements. Selective adsorptive separation of cyclohexane was realized from an equimolar benzene and cyclohexane mixture via crystalline thienothiophene cages with a selectivity of 94%.![]()
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Affiliation(s)
- Yanjun Ding
- Smart Hybrid Materials (SHMs) Laboratory, Advanced Membranes and Porous Materials Center, King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Kingdom of Saudi Arabia
| | - Lukman O Alimi
- Smart Hybrid Materials (SHMs) Laboratory, Advanced Membranes and Porous Materials Center, King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Kingdom of Saudi Arabia
| | - Basem Moosa
- Smart Hybrid Materials (SHMs) Laboratory, Advanced Membranes and Porous Materials Center, King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Kingdom of Saudi Arabia
| | - Carine Maaliki
- Laboratoire PCM2E, Université de Tours Parc de Grandmont 37200 Tours France
| | - Johan Jacquemin
- Laboratoire PCM2E, Université de Tours Parc de Grandmont 37200 Tours France
| | - Feihe Huang
- State Key Laboratory of Chemical Engineering, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University Hangzhou 310027 P. R. China
| | - Niveen M Khashab
- Smart Hybrid Materials (SHMs) Laboratory, Advanced Membranes and Porous Materials Center, King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Kingdom of Saudi Arabia
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14
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Hughes AR, Blanc F. Recent advances in probing host–guest interactions with solid state nuclear magnetic resonance. CrystEngComm 2021. [DOI: 10.1039/d1ce00168j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A recent update on how solid state NMR has aided the interpretation and understanding of host–guest interactions in the field of supramolecular assemblies is provided.
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Affiliation(s)
| | - Frédéric Blanc
- Department of Chemistry
- University of Liverpool
- Liverpool
- UK
- Stephenson Institute for Renewable Energy
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15
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Xenon binding by a tight yet adaptive chiral soft capsule. Nat Commun 2020; 11:6257. [PMID: 33288758 PMCID: PMC7721739 DOI: 10.1038/s41467-020-20081-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Accepted: 11/11/2020] [Indexed: 11/08/2022] Open
Abstract
Xenon binding has attracted interest due to the potential for xenon separation and emerging applications in magnetic resonance imaging. Compared to their covalent counterparts, assembled hosts that are able to effectively bind xenon are rare. Here, we report a tight yet soft chiral macrocycle dimeric capsule for efficient and adaptive xenon binding in both crystal form and solution. The chiral bisurea-bisthiourea macrocycle can be easily synthesized in multi-gram scale. Through assembly, the flexible macrocycles are locked in a bowl-shaped conformation and buckled to each other, wrapping up a tight, completely sealed yet adjustable cavity suitable for xenon, with a very high affinity for an assembled host. A slow-exchange process and drastic spectral changes are observed in both 1H and 129Xe NMR. With the easy synthesis, modification and reversible characteristics, we believe the robust yet adaptive assembly system may find applications in xenon sequestration and magnetic resonance imaging-based biosensing.
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16
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Li S, Lafon O, Wang W, Wang Q, Wang X, Li Y, Xu J, Deng F. Recent Advances of Solid-State NMR Spectroscopy for Microporous Materials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2002879. [PMID: 32902037 DOI: 10.1002/adma.202002879] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 07/29/2020] [Indexed: 05/25/2023]
Abstract
Microporous materials have attracted a rapid growth of research interest in materials science and the multidisciplinary area because of their wide applications in catalysis, separation, ion exchange, gas storage, drug release, and sensing. A fundamental understanding of their diverse structures and properties is crucial for rational design of high-performance materials and technological applications in industry. Solid-state NMR (SSNMR), capable of providing atomic-level information on both structure and dynamics, is a powerful tool in the scientific exploration of solid materials. Here, advanced SSNMR instruments and methods for characterization of microporous materials are briefly described. The recent progress of the application of SSNMR for the investigation of microporous materials including zeolites, metal-organic frameworks, covalent organic frameworks, porous aromatic frameworks, and layered materials is discussed with representative work. The versatile SSNMR techniques provide detailed information on the local structure, dynamics, and chemical processes in the confined space of porous materials. The challenges and prospects in SSNMR study of microporous and related materials are discussed.
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Affiliation(s)
- Shenhui Li
- National Centre for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, 430071, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Olivier Lafon
- Univ. Lille, CNRS, Centrale Lille, Univ. Artois, UMR 8181- UCCS - Unité de Catalyse et Chimie du Solide, Lille, F-59000, France
- Institut Universitaire de France, Paris, 75231, France
| | - Weiyu Wang
- National Centre for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, 430071, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Qiang Wang
- National Centre for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, 430071, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xingxing Wang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun, 130012, China
| | - Yi Li
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun, 130012, China
- International Center of Future Science, Jilin University, Changchun, 130012, China
| | - Jun Xu
- National Centre for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, 430071, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Feng Deng
- National Centre for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, 430071, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
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17
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Wu Y, Zeng S, Yuan D, Xing J, Liu H, Xu S, Wei Y, Xu Y, Liu Z. Enhanced Propene/Propane Separation by Directional Decoration of the 12‐Membered Rings of Mordenite with ZIF Fragments. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202000029] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Yaqi Wu
- National Engineering Laboratory for Methanol to OlefinsDalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Shu Zeng
- National Engineering Laboratory for Methanol to OlefinsDalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Danhua Yuan
- National Engineering Laboratory for Methanol to OlefinsDalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
| | - Jiacheng Xing
- National Engineering Laboratory for Methanol to OlefinsDalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Hanbang Liu
- National Engineering Laboratory for Methanol to OlefinsDalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Shutao Xu
- National Engineering Laboratory for Methanol to OlefinsDalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
| | - Yingxu Wei
- National Engineering Laboratory for Methanol to OlefinsDalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
| | - Yunpeng Xu
- National Engineering Laboratory for Methanol to OlefinsDalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
| | - Zhongmin Liu
- National Engineering Laboratory for Methanol to OlefinsDalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
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18
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Ghalami Z, Ghoulipour V, Khanchi AR. Adsorption and sequential thermal release of F 2 , Cl 2 , and Br 2 molecules by a porous organic cage material (CC3-R): Molecular dynamics and grand-canonical Monte Carlo simulations. J Comput Chem 2020; 41:949-957. [PMID: 31891419 DOI: 10.1002/jcc.26142] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 12/01/2019] [Accepted: 12/20/2019] [Indexed: 11/07/2022]
Abstract
The adsorption-desorption behavior of fluorine, chlorine, and bromine molecules onto a crystalline porous organic cage, namely CC3-R was calculated at different temperatures using molecular dynamics (MD) and grand-canonical Monte Carlo (GCMC) simulations. Self-diffusion coefficients, radial distribution functions (RDF), and adsorption isotherms were calculated for this purpose. The results show that CC3-R has varied capacities to capture these halogens at ambient and high temperatures, so that the thermal release of fluorine is completed with increasing temperature up to around 70°C and chlorine molecules remain at the CC3-R surface up to 100°C and all bromine molecules are removed from the CC3-R surface at 200°C. We found that bromine self-diffusion was almost independent of temperature between 0 and 100°C in contrast to fluorine and chlorine. Among different diffusion regimes, Knudsen diffusion appears to have an important role in the adsorption of heavy halogens at higher temperatures.
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Affiliation(s)
- Zahra Ghalami
- Faculty of Chemistry, Kharazmi University, Tehran, Iran
| | | | - Ali Reza Khanchi
- Nuclear Science and Technology Research Institute, AEOI, Tehran, Iran
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19
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Wu Y, Zeng S, Yuan D, Xing J, Liu H, Xu S, Wei Y, Xu Y, Liu Z. Enhanced Propene/Propane Separation by Directional Decoration of the 12‐Membered Rings of Mordenite with ZIF Fragments. Angew Chem Int Ed Engl 2020; 59:6765-6768. [DOI: 10.1002/anie.202000029] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Indexed: 11/11/2022]
Affiliation(s)
- Yaqi Wu
- National Engineering Laboratory for Methanol to OlefinsDalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Shu Zeng
- National Engineering Laboratory for Methanol to OlefinsDalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Danhua Yuan
- National Engineering Laboratory for Methanol to OlefinsDalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
| | - Jiacheng Xing
- National Engineering Laboratory for Methanol to OlefinsDalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Hanbang Liu
- National Engineering Laboratory for Methanol to OlefinsDalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Shutao Xu
- National Engineering Laboratory for Methanol to OlefinsDalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
| | - Yingxu Wei
- National Engineering Laboratory for Methanol to OlefinsDalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
| | - Yunpeng Xu
- National Engineering Laboratory for Methanol to OlefinsDalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
| | - Zhongmin Liu
- National Engineering Laboratory for Methanol to OlefinsDalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
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20
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21
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Håkansson P, Javed MA, Komulainen S, Chen L, Holden D, Hasell T, Cooper A, Lantto P, Telkki VV. NMR relaxation and modelling study of the dynamics of SF 6 and Xe in porous organic cages. Phys Chem Chem Phys 2019; 21:24373-24382. [PMID: 31663555 DOI: 10.1039/c9cp04379a] [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 porous solid formed from organic CC3 cage molecules has exceptional performance for rare gas separation. NMR spectroscopy provides a way to reveal the dynamical details by using experimental relaxation and diffusion measurements. Here, we investigated T1 and T2 relaxation as well as diffusion of 129Xe and SF6 gases in the CC3-R molecular crystal at various temperatures and magnetic field strengths. Advanced relaxation modelling made it possible to extract various important dynamical parameters for gases in CC3-R, such as exchange rates, activation energies and mobility rates of xenon, occupancies of the cavities, rotational correlational times, effective relaxation rates, and diffusion coefficients of SF6.
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Affiliation(s)
- Pär Håkansson
- NMR Research Unit, University of Oulu, P. O. Box 3000, 90014 Oulu, Finland.
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22
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Wu Y, Yuan D, He D, Xing J, Zeng S, Xu S, Xu Y, Liu Z. Decorated Traditional Zeolites with Subunits of Metal–Organic Frameworks for CH
4
/N
2
Separation. Angew Chem Int Ed Engl 2019; 58:10241-10244. [DOI: 10.1002/anie.201905014] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Indexed: 11/12/2022]
Affiliation(s)
- Yaqi Wu
- National Engineering Laboratory for Methanol to OlefinsDalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Danhua Yuan
- National Engineering Laboratory for Methanol to OlefinsDalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
| | - Dawei He
- National Engineering Laboratory for Methanol to OlefinsDalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Jiacheng Xing
- National Engineering Laboratory for Methanol to OlefinsDalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Shu Zeng
- National Engineering Laboratory for Methanol to OlefinsDalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Shutao Xu
- National Engineering Laboratory for Methanol to OlefinsDalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
| | - Yunpeng Xu
- National Engineering Laboratory for Methanol to OlefinsDalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
| | - Zhongmin Liu
- National Engineering Laboratory for Methanol to OlefinsDalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
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23
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Wu Y, Yuan D, He D, Xing J, Zeng S, Xu S, Xu Y, Liu Z. Decorated Traditional Zeolites with Subunits of Metal–Organic Frameworks for CH
4
/N
2
Separation. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201905014] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yaqi Wu
- National Engineering Laboratory for Methanol to OlefinsDalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Danhua Yuan
- National Engineering Laboratory for Methanol to OlefinsDalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
| | - Dawei He
- National Engineering Laboratory for Methanol to OlefinsDalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Jiacheng Xing
- National Engineering Laboratory for Methanol to OlefinsDalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Shu Zeng
- National Engineering Laboratory for Methanol to OlefinsDalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Shutao Xu
- National Engineering Laboratory for Methanol to OlefinsDalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
| | - Yunpeng Xu
- National Engineering Laboratory for Methanol to OlefinsDalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
| | - Zhongmin Liu
- National Engineering Laboratory for Methanol to OlefinsDalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian 116023 P. R. China
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24
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Bavykina A, Cadiau A, Gascon J. Porous liquids based on porous cages, metal organic frameworks and metal organic polyhedra. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2019.01.015] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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25
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Lucero J, Crawford JM, Osuna C, Carreon MA. Solvothermal synthesis of porous organic cage CC3 in the presence of dimethylformamide as solvent. CrystEngComm 2019. [DOI: 10.1039/c9ce00662a] [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
Morphology, and crystal product of porous organic cage CC3, was modified by the use of a novel and non-traditional high dielectric constant solvent dimethyl formamide.
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Affiliation(s)
- Jolie Lucero
- Department of Chemical and Biological Engineering
- Colorado School of Mines
- Golden
- USA
| | - James M. Crawford
- Department of Chemical and Biological Engineering
- Colorado School of Mines
- Golden
- USA
| | - Carla Osuna
- Department of Chemical and Biological Engineering
- Colorado School of Mines
- Golden
- USA
| | - Moises A. Carreon
- Department of Chemical and Biological Engineering
- Colorado School of Mines
- Golden
- USA
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26
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Gao S, Xu S, Wei Y, Liu Z, Zheng A, Wu P, Liu Z. Direct probing of heterogeneity for adsorption and diffusion within a SAPO-34 crystal. Chem Commun (Camb) 2019; 55:10693-10696. [DOI: 10.1039/c9cc05322k] [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 heterogeneity with a gradient distribution in adsorption and diffusion of xenon in a SAPO-34 crystal was revealed by 129Xe NMR, 2D EXSY NMR and 129Xe PFG NMR at the micro-scale. A multi-layer adsorption model in a single crystal was proposed.
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Affiliation(s)
- Shushu Gao
- National Engineering Laboratory for Methanol to Olefins
- Dalian National Laboratory for Clean Energy
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
| | - Shutao Xu
- National Engineering Laboratory for Methanol to Olefins
- Dalian National Laboratory for Clean Energy
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
| | - Yingxu Wei
- National Engineering Laboratory for Methanol to Olefins
- Dalian National Laboratory for Clean Energy
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
| | - Zhiqiang Liu
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics
- National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics
- Chinese Academy of Sciences
- Wuhan 430071
- P. R. China
| | - Anmin Zheng
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics
- National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics
- Chinese Academy of Sciences
- Wuhan 430071
- P. R. China
| | - Pengfei Wu
- National Engineering Laboratory for Methanol to Olefins
- Dalian National Laboratory for Clean Energy
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
| | - Zhongmin Liu
- National Engineering Laboratory for Methanol to Olefins
- Dalian National Laboratory for Clean Energy
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
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27
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Kemnitzer TW, Tschense CBL, Wittmann T, Rössler EA, Senker J. Exploring Local Disorder within CAU-1 Frameworks Using Hyperpolarized 129Xe NMR Spectroscopy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:12538-12548. [PMID: 30247917 DOI: 10.1021/acs.langmuir.8b02592] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The sorption properties of metal-organic frameworks (MOFs) can be influenced by introducing covalently attached functional side chains, which make this subclass of porous materials promising for applications as diverse as gas storage and separation, catalysis, and drug delivery. The incorporation of side groups usually comes along with disorder, as the synthesis procedures rarely allow for one specific position among a larger group of equivalent sites to be selected. For a series of isoreticular CAU-1 frameworks, chosen as model compounds, one out of four positions at every linker is modified with equal probability. Here, we investigate the influence of this disorder on Ar sorption and 129Xe nuclear magnetic resonance spectroscopy using hyperpolarized 129Xe gas. Models used for predicting the pore dimensions as well as their distributions were derived from the unfunctionalized framework by replacing one proton at every linker with either an amino, an acetamide, or a methyl urea functionality. The resulting structures were optimized using density functional theory (DFT) calculations. Results from void analyses and Monte Carlo force field simulations suggest that for available Ar nonlocal DFT (NLDFT) kernels, neither the pore dimensions nor the distributions induced by the side-chain disorder are well-reproduced. By contrast, we found the 129Xe chemical shift analysis for the shift observed at high temperature to be well-suited to develop a detailed fingerprint of the porosity and side-chain disorder within the isoreticular CAU-1 series. After calibrating the 129Xe limiting shift of the amino-functionalized framework with DFT calculations, the downfield shifts for the other two derivatives are an excellent measure for the reduction of the accessible pore space and reveal a strong preference for the side chains toward the octahedral voids for both cases. We expect that the strategy presented here can be commonly applied to disorder phenomena within MOFs in the future.
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28
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Zemerov SD, Roose BW, Greenberg ML, Wang Y, Dmochowski IJ. Cryptophane Nanoscale Assemblies Expand 129Xe NMR Biosensing. Anal Chem 2018; 90:7730-7738. [PMID: 29782149 PMCID: PMC6050516 DOI: 10.1021/acs.analchem.8b01630] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Cryptophane-based biosensors are promising agents for the ultrasensitive detection of biomedically relevant targets via 129Xe NMR. Dynamic light scattering revealed that cryptophanes form water-soluble aggregates tens to hundreds of nanometers in size. Acridine orange fluorescence quenching assays allowed quantitation of the aggregation state, with critical concentrations ranging from 200 nM to 600 nM, depending on the cryptophane species in solution. The addition of excess carbonic anhydrase (CA) protein target to a benzenesulfonamide-functionalized cryptophane biosensor (C8B) led to C8B disaggregation and produced the expected 1:1 C8B-CA complex. C8B showed higher affinity at 298 K for the cytoplasmic isozyme CAII than the extracellular CAXII isozyme, which is a biomarker of cancer. Using hyper-CEST NMR, we explored the role of stoichiometry in detecting these two isozymes. Under CA-saturating conditions, we observed that isozyme CAII produces a larger 129Xe NMR chemical shift change (δ = 5.9 ppm, relative to free biosensor) than CAXII (δ = 2.7 ppm), which indicates the strong potential for isozyme-specific detection. However, stoichiometry-dependent chemical shift data indicated that biosensor disaggregation contributes to the observed 129Xe NMR chemical shift change that is normally assigned to biosensor-target binding. Finally, we determined that monomeric cryptophane solutions improve hyper-CEST saturation contrast, which enables ultrasensitive detection of biosensor-protein complexes. These insights into cryptophane-solution behavior support further development of xenon biosensors, but will require reinterpretation of the data previously obtained for many water-soluble cryptophanes.
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Affiliation(s)
- Serge D. Zemerov
- Department of Chemistry, University of Pennsylvania, 231 S 34 St., Philadelphia, PA 19104
| | - Benjamin W. Roose
- Department of Chemistry, University of Pennsylvania, 231 S 34 St., Philadelphia, PA 19104
| | | | | | - Ivan J. Dmochowski
- Department of Chemistry, University of Pennsylvania, 231 S 34 St., Philadelphia, PA 19104
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29
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Chemical shift extremum of 129Xe(aq) reveals details of hydrophobic solvation. Sci Rep 2018; 8:7023. [PMID: 29728689 PMCID: PMC5935698 DOI: 10.1038/s41598-018-25418-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Accepted: 04/20/2018] [Indexed: 11/08/2022] Open
Abstract
The 129Xe chemical shift in an aqueous solution exhibits a non-monotonic temperature dependence, featuring a maximum at 311 K. This is in contrast to most liquids, where the monotonic decrease of the shift follows that of liquid density. In particular, the shift maximum in water occurs at a higher temperature than that of the maximum density. We replicate this behaviour qualitatively via a molecular dynamics simulation and computing the 129Xe chemical shift for snapshots of the simulation trajectory. We also construct a semianalytical model, in which the Xe atom occupies a cavity constituted by a spherical water shell, consisting of an even distribution of solvent molecules. The temperature dependence of the shift is seen to result from a product of the decreasing local water density and an increasing term corresponding to the energetics of the Xe-H2O collisions. The latter moves the chemical shift maximum up in temperature, as compared to the density maximum. In water, the computed temperature of the shift maximum is found to be sensitive to both the details of the binary chemical shift function and the coordination number. This work suggests that, material parameters allowing, the maximum should be exhibited by other liquids, too.
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