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Uhlig H, Hollenbach J, Rogaczewski M, Matysik J, Brieler FJ, Fröba M, Enke D. Pseudomorphic Transformation of Porous Glasses into Micelle-Templated Silica. CHEM-ING-TECH 2017. [DOI: 10.1002/cite.201600189] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hans Uhlig
- University of Leipzig; Institut für Nichtklassische Chemie e.V.; Permoserstraße 15 04318 Leipzig Germany
| | - Julia Hollenbach
- University of Leipzig; Institute of Analytical Chemistry; Linnéstraße 3 04103 Leipzig Germany
| | - Matthias Rogaczewski
- University of Hamburg; Institute of Inorganic and Applied Chemistry; Martin-Luther-King-Platz 6 20146 Hamburg Germany
| | - Jörg Matysik
- University of Leipzig; Institute of Analytical Chemistry; Linnéstraße 3 04103 Leipzig Germany
| | - Felix J. Brieler
- University of Hamburg; Institute of Inorganic and Applied Chemistry; Martin-Luther-King-Platz 6 20146 Hamburg Germany
| | - Michael Fröba
- University of Hamburg; Institute of Inorganic and Applied Chemistry; Martin-Luther-King-Platz 6 20146 Hamburg Germany
| | - Dirk Enke
- University of Leipzig; Institute of Chemical Technology; Linnéstraße 3 04103 Leipzig Germany
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Gotoh K, Ueda T, Eguchi T, Kawabata K, Yamamoto K, Murakami Y, Hayakawa S, Ishida H. Pore Structure of Hard Carbon Made from Phenolic Resin Studied by129Xe NMR. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2009. [DOI: 10.1246/bcsj.82.1232] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Bonardet JL, Fraissard J, Gédéon A, Springuel-Huet MA. Nuclear Magnetic Resonance of Physisorbed129Xe Used as a Probe to Investigate Porous Solids. CATALYSIS REVIEWS-SCIENCE AND ENGINEERING 2008. [DOI: 10.1080/01614949909353779] [Citation(s) in RCA: 122] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Chagolla D, Mathias EV, Ba Y. Probing the interaction of solvents with the stationary phase of C18 high-performance liquid chromatographic column material by variable-temperature dependent 129Xe nuclear magnetic resonance spectroscopy. J Chromatogr A 2006; 1121:23-31. [PMID: 16635493 DOI: 10.1016/j.chroma.2006.03.117] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2005] [Revised: 03/30/2006] [Accepted: 03/31/2006] [Indexed: 11/28/2022]
Abstract
VT (129)Xe NMR was applied to probe the interactions of solvents having different polarity indices with the stationary phase of a RP-C18 HPLC column material. It was observed that the highly polar ethylene glycol molecules do not mix with the alkyl chains of the RP-C18 stationary phase and the solvent is unable to enter the pores and the spaces between the particles. Three phases in this sample are defined as stationary/xenon phase, xenon gas phase (in the pores and the spaces between the particles) and ethylene glycol/xenon phase. In contrast to ethylene glycol, the nonpolar solvent cyclohexane was observed to be well mixed with the RP-C18 stationary phase. The capillary rise effect allows the solvent to enter the pores and the spaces between the particles. Two phases in this sample are defined as stationary/cyclohexane/xenon phase and cyclohexane/xenon phases. The properties of ethyl acetate are between those of ethylene glycol and cyclohexane. The (129)Xe NMR results show that the rational reversed phases should be conditioned from highly solvating to more polar solvents to remove the trapped air. The (129)Xe NMR results also show that pure stationary phase exists only when a highly polar solvent is used in reversed-phase chromatography. For a solvent with lower polarity, a stationary/solvent phase actually forms. This, together with the mobile phase, determines the selective factor for separating mixtures.
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Affiliation(s)
- Danny Chagolla
- Department of Chemistry and Biochemistry, California State University Los Angeles, 5151 State University Drive, Los Angeles, CA 90032, USA
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Ueda T, Omi H, Yukioka T, Eguchi T. High-Pressure129Xe NMR Study of the Intermolecular Interaction of Xenon Confined in Activated Carbon Fiber (ACF). BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2006. [DOI: 10.1246/bcsj.79.237] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Knagge K, Smith JR, Smith LJ, Buriak J, Raftery D. Analysis of porosity in porous silicon using hyperpolarized 129Xe two-dimensional exchange experiments. SOLID STATE NUCLEAR MAGNETIC RESONANCE 2006; 29:85-9. [PMID: 16257190 DOI: 10.1016/j.ssnmr.2005.10.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2005] [Indexed: 05/05/2023]
Abstract
The porosity in porous silicon was characterized using hyperpolarized (HP) xenon as a probe. HP xenon under conditions of continuous flow allows for the rapid acquisition of xenon NMR spectra that can be used to characterize a variety of materials. Two-dimensional exchange spectroscopy (EXSY) (129)Xe NMR experiments using HP xenon were performed to obtain exchange pathways and rates of xenon mobility between pores of different dimensions within the structure of porous silicon and to the gas phase above the sample. Pore sizes are estimated from chemical shift information and a model for pore geometry is presented.
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Affiliation(s)
- Kevin Knagge
- H.C. Brown Laboratory, Department of Chemistry, 560 Oval Drive, Purdue University, West Lafayette, IN 47907, USA
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Omi H, Ueda T, Kato N, Miyakubo K, Eguchi T. Local structure of xenon adsorbed in the nanospaces of zeolites as studied by high-pressure 129Xe NMR. Phys Chem Chem Phys 2006; 8:3857-66. [DOI: 10.1039/b604633a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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8
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Lin G, Jones AA. A lattice model for the simulation of one and two dimensional 129Xe exchange spectra produced by translational diffusion. SOLID STATE NUCLEAR MAGNETIC RESONANCE 2004; 26:87-98. [PMID: 15276639 DOI: 10.1016/j.ssnmr.2004.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2004] [Revised: 06/02/2004] [Indexed: 05/24/2023]
Abstract
Xenon-129 spectra in some heterogeneous polymer systems consist of two resonances which collapse to a single resonance as a function of temperature. Two different resonances arise from spatially separated, distinct sorption environments and spectral collapse occurs when xenon atoms diffuse from one environment to the other at a sufficiently fast rate. This exchange mechanism involves a distribution of time constants and a two domain lattice model is used to generate a realistic distribution of correlation times resulting from diffusion in a heterogeneous matrix. The distribution of correlation times is inhomogeneous in the sense that different xenon atoms would exchange between the two domains or environments with a variety of time constants and the resulting spectrum is a superposition of spectra associated with each of the time constants. To demonstrate the nature of exchange according to this model, diffusion out of a sphere is simulated which corresponds to a progressive saturation experiment used to determine the diffusion constant of xenon in polystyrene. Then the model is used to demonstrate the difference between homogeneous and heterogeneous spectral collapse in one- and two-dimensional examples. Lastly, the simulation model is used to interpret one- and two- dimensional xenon-129 line shape changes for xenon sorbed into poly(2,6-dimethyl-1,4-phenylene oxide) as a function of temperature. Two broad resonances are observed at low temperatures in this polymer corresponding to xenon-129 sorbed in high free volume and low free volume domains. Exchange between the two main resonances collapses the spectrum to a single peak at higher temperatures. Both the collapse in one dimension and exchange in two dimensions as a function of mixing time can be simulated using the distribution from the lattice model. An average domain size of 70 nm is estimated by combining the simulation of the exchange experiment with the results of a one-dimensional progressive saturation experiment. The size of the sites sorbing individual xenon atoms has been reported from positron annihilation lifetime spectroscopy as 1.4 nm for the high free volume sites and 0.3 nm for the low free volume sites. The domain size is more than an order of magnitude larger than the individual sorption site indicating that domains consist of many sites as assumed in the lattice model description.
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Affiliation(s)
- Guoxing Lin
- Department of Chemistry, The Carlson School of Chemistry and Biochemistry, Clark University, Worcester, MA 01610-1400, USA
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9
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Ueda T, Eguchi T, Nakamura N, Wasylishen RE. High-Pressure 129Xe NMR Study of Xenon Confined in the Nanochannels of Solid (±)-[Co(en)3]Cl3. J Phys Chem B 2002. [DOI: 10.1021/jp021679r] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Takahiro Ueda
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan, and Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - Taro Eguchi
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan, and Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - Nobuo Nakamura
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan, and Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - Roderick E. Wasylishen
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan, and Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
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Wang Y, Inglefield PT, Jones AA. Gas sorption environments in poly(2,6-dimethyl-1,4-phenylene oxide) by xenon-129 nuclear magnetic resonance: Effects of processing. ACTA ACUST UNITED AC 2002. [DOI: 10.1002/polb.10259] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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11
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Ba Y, Chagolla D. Structure, Dynamics, and Interaction of the Stationary Phase and Xenon Atoms in the Zorbax SB-C18 HPLC Column Material Studied by Solid State NMR and 129Xe NMR. J Phys Chem B 2002. [DOI: 10.1021/jp014600b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Yong Ba
- Department of Chemistry and Biochemistry, California State University, Los Angeles, 5151 State University Drive, Los Angeles, California 90032
| | - Danny Chagolla
- Department of Chemistry and Biochemistry, California State University, Los Angeles, 5151 State University Drive, Los Angeles, California 90032
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12
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Miyoshi T, Takegoshi K, Terao T. Effects of Xe Gas on Segmental Motion in a Polymer Blend As Studied by 13C and 129Xe High-Pressure MAS NMR. Macromolecules 2001. [DOI: 10.1021/ma0115287] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Toshikazu Miyoshi
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - K. Takegoshi
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Takehiko Terao
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
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Brotin T, Devic T, Lesage A, Emsley L, Collet A. Synthesis of deuterium-labeled cryptophane-A and investigation of Xe@cryptophane complexation dynamics by 1D-EXSY-NMR experiments. Chemistry 2001; 7:1561-73. [PMID: 11330913 DOI: 10.1002/1521-3765(20010401)7:7<1561::aid-chem1561>3.0.co;2-9] [Citation(s) in RCA: 64] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
We present the synthesis of a series of deuterated cryptophanes 2-6 by a slightly modified procedure used for cryptophane-A. We show that for [Xe@cryptophane] complexes the use of variable-temperature one-dimensional 129Xe magnetization transfer (1D-EX-SY) allows the measurement of exchange rates. From these data the decomplexation activation energy Ea has been estimated to be 37.5+/-2 kJ mol(-1). The decomplexation activation enthalpy, deltaH(++) = 35.5+/-2 kJ mol(-1), and entropy, deltaS(++) = -60+/-5 J mol(-1) K(-1), have also been calculated. The calculated negative activation entropy suggests that the activated complex associated with decomplexation is conformationally more strained than the complex in its ground state.
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Affiliation(s)
- T Brotin
- Ecole Normale Supérieure de Lyon Stéréochimie et Interactions Moléculaires, UMR 5535, CNRS/ENS-Lyon, France.
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Brotin T, Lesage A, Emsley L, Collet A. 129Xe NMR Spectroscopy of Deuterium-Labeled Cryptophane-A Xenon Complexes: Investigation of Host−Guest Complexation Dynamics. J Am Chem Soc 2000. [DOI: 10.1021/ja993053t] [Citation(s) in RCA: 77] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Thierry Brotin
- Contribution from the École Normale Supérieure de Lyon, Stéréochimie et Interactions Moléculaires, UMR CNRS 5532, 46, Allée d'Italie, F-69364 Lyon Cedex 07, France
| | - Anne Lesage
- Contribution from the École Normale Supérieure de Lyon, Stéréochimie et Interactions Moléculaires, UMR CNRS 5532, 46, Allée d'Italie, F-69364 Lyon Cedex 07, France
| | - Lyndon Emsley
- Contribution from the École Normale Supérieure de Lyon, Stéréochimie et Interactions Moléculaires, UMR CNRS 5532, 46, Allée d'Italie, F-69364 Lyon Cedex 07, France
| | - André Collet
- Contribution from the École Normale Supérieure de Lyon, Stéréochimie et Interactions Moléculaires, UMR CNRS 5532, 46, Allée d'Italie, F-69364 Lyon Cedex 07, France
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Zhu SH, Cheung MK, Chan CM. Interfacial characterization of compatibilized PVC/SBR blends by solid-state NMR and TEM. POLYMER 1998. [DOI: 10.1016/s0032-3861(98)00039-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Yang C, Wen WY, Jones AA, Inglefield PT. A 129Xe NMR study on an ionomeric polymer blend system. SOLID STATE NUCLEAR MAGNETIC RESONANCE 1998; 12:153-164. [PMID: 9809787 DOI: 10.1016/s0926-2040(98)00059-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The morphology of an ionomeric polymer blend consisting of an amino-silicone copolymer and zinc neutralized sulfonated polystyrene (ZnSPS) has been studied using proton spin diffusion and small angle X-ray scattering (SAXS). The extent of reaction between the two components in the blend was monitored by 13C CP MAS spectroscopy. All three types of experiment point to domain sizes in the nanometer range. 129Xe NMR was used to study exchange by translational diffusion between domains. A single xenon resonance was detected in temperatures ranging from 25 degrees C to -90 degrees C, and the chemical shift followed a weighted average of the isolated polymer shifts consistent with the small domain sizes. Pulse field gradient 129Xe NMR was used to determine the effective diffusion constants in the amino silicone starting material and the blend. The diffusion constant of xenon in poly(styrene) is known, allowing for comparison of the predictions of effective diffusion constants in the blend based on the values in the constituents of the blend. Simple two-site exchange equations incorrectly predict that diffusion in the blend would be dominated by the constituent with slow diffusion. The blend diffusion constant is close to the value of the amino silicone or the constituent with fast diffusion which is correctly predicted for a rapid exchange solution of the diffusion equation.
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Affiliation(s)
- C Yang
- Chemistry Department, Clark University, Worcester, MA 01610, USA
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Polymer Blends and Miscibility. ACTA ACUST UNITED AC 1998. [DOI: 10.1016/s0167-6881(98)80018-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
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20
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Miyoshi T, Takegoshi K, Terao T. 129Xe n.m.r. study of free volume and phase separation of the polystyrene/poly(vinyl methyl ether) blend. POLYMER 1997. [DOI: 10.1016/s0032-3861(97)00086-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Simpson JH, Wen, Jones AA, Inglefield PT, Bendler JT. Diffusion Coefficients of Xenon in Polystyrene Determined by Xenon-129 NMR Spectroscopy. Macromolecules 1996. [DOI: 10.1021/ma951213p] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jeffrey H. Simpson
- Carlson School of Chemistry, Clark University, Worcester, Massachusetts 01610
| | - Wen
- Carlson School of Chemistry, Clark University, Worcester, Massachusetts 01610
| | - Alan A. Jones
- Carlson School of Chemistry, Clark University, Worcester, Massachusetts 01610
| | - Paul T. Inglefield
- Carlson School of Chemistry, Clark University, Worcester, Massachusetts 01610
| | - John T. Bendler
- Department of Chemistry and Chemical Engineering, South Dakota School of Mines and Technology, Rapid City, South Dakota 57701
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Tomaselli M, Meier B, Robyr P, Suter U, Ernst R. Direct measurement of xenon exchange between gas and liquid phase by 2D NMR. Chem Phys Lett 1993. [DOI: 10.1016/0009-2614(93)85445-t] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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