NMR chemical shifts of129Xe dissolved in liquid haloalkanes and their mixtures

Lim, Yoong Ho; Calhoun, Allison; King, A. D.

doi:10.1007/bf03164135

Cited by 7 publications

(5 citation statements)

References 20 publications

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“…It is clear that ILs with highly fluorinated anions display the smallest δXe values, as could be expected from our previous results of perfluoroalkanes . In the case of the iodide and chloride series, the presence of the heavier atoms enhances the dispersive interactions with xenon and is responsible for higher δXe results, again in agreement with previous observations …”

supporting

confidence: 92%

“…28 In the case of the iodide and chloride series, the presence of the heavier atoms enhances the dispersive interactions with xenon and is responsible for higher δXe results, again in agreement with previous observations. 32 Also represented in Figure 1 is the range of δXe values observed when the solvent is a dense liquid alkane at a reduced temperature of 0.4 (e.g., hexadecane at 298.15 K). All IL homologous series seem to come near to this range as the length of the corresponding alkyl side chains increases, and this suggests the progressive solvation of xenon in alkyl-like regions within the IL.…”

mentioning

confidence: 99%

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Using ¹²⁹Xe NMR to Probe the Structure of Ionic Liquids

Morgado¹,

Shimizu²,

Esperança

et al. 2013

J. Phys. Chem. Lett.

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The mesoscopic structure of 30 distinct ionic liquids was probed by 129 Xe NMR spectroscopy. The interpretation of the experimental data was complemented using molecular dynamics results. The results clearly show that xenon can effectively probe the various environments characteristic of different ionic liquids (ILs) and is thus able to distinguish between distinct ionic liquid families, including different types of interactions with diverse types of anion/polar networks. A finer analysis of the NMR data also confirmed that the xenon probes can also provide information on how the complex structure of an IL evolves along a homologous series.

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supporting

confidence: 92%

mentioning

confidence: 99%

Using ¹²⁹Xe NMR to Probe the Structure of Ionic Liquids

Morgado¹,

Shimizu²,

Esperança

et al. 2013

J. Phys. Chem. Lett.

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“…129 Xe chemical shift measurements have been used to distinguish and characterize different systems and to study a large variety of processes. For instance, solution state 129 Xe NMR has been used to study the intermolecular interactions of xenon atoms with solvent and solute molecules, − to investigate phase transitions in liquid crystals, to characterize hydrophobic cavities in organic host molecules and proteins, − to evidence diastereoisomeric structures in chiral recognition processes, , and to study configurational , and conformational − equilibria.…”

Section: Introductionmentioning

confidence: 99%

Novel Method for the Measurement of Xenon Gas Solubility Using¹²⁹Xe NMR Spectroscopy

et al. 2006

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A novel method is presented for determining xenon partitioning between a gas phase and a liquid phase. An experimental setup which permits the simultaneous measurement of the 129Xe chemical shift in both the gas and the liquid phases, that is, under the same experimental conditions, has been designed. Xenon solubility is obtained via 129Xe chemical shift measurements in the gas phase. The method was validated against xenon solubility data from the literature; in general, the agreement is found to be within 3%. The solubility of xenon in three solvents for which data have not been previously reported (acetone, acetonitrile, and 1,1,2,2-tetrachloroethane) was determined using this novel method. 129Xe chemical shifts for dissolved xenon are also reported; it is found that xenon-xenon interactions may play a significant role in the liquid phase even at low equilibrium xenon pressures.

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“…Naturally, this is reflected in its NMR signal, which, analogously to solid materials, can be used to obtain in-depth structural and morphological information along with knowledge about phase separation, dynamics, and presence and size of different domains. Owing to these important features, 129 Xe NMR has been used to study a variety of pure liquids, mixtures, solutions, and host-guest complexes in the liquid phase [51][52][53][54][55][56][57].…”

Section: Liquids Mixtures and Solutionsmentioning

confidence: 99%

129Xe: A Wide-Ranging NMR Probe for Multiscale Structures

2022

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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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NMR chemical shifts of129Xe dissolved in liquid haloalkanes and their mixtures

Cited by 7 publications

References 20 publications

Using ¹²⁹Xe NMR to Probe the Structure of Ionic Liquids

Using ¹²⁹Xe NMR to Probe the Structure of Ionic Liquids

Novel Method for the Measurement of Xenon Gas Solubility Using¹²⁹Xe NMR Spectroscopy

129Xe: A Wide-Ranging NMR Probe for Multiscale Structures

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NMR chemical shifts of129Xe dissolved in liquid haloalkanes and their mixtures

Cited by 7 publications

References 20 publications

Using 129Xe NMR to Probe the Structure of Ionic Liquids

Using 129Xe NMR to Probe the Structure of Ionic Liquids

Novel Method for the Measurement of Xenon Gas Solubility Using129Xe NMR Spectroscopy

129Xe: A Wide-Ranging NMR Probe for Multiscale Structures

Contact Info

Product

Resources

About

Using ¹²⁹Xe NMR to Probe the Structure of Ionic Liquids

Using ¹²⁹Xe NMR to Probe the Structure of Ionic Liquids

Novel Method for the Measurement of Xenon Gas Solubility Using¹²⁹Xe NMR Spectroscopy