Search Results - "Tekely, P."

Probing molecular and isotopic features of meteoritic insoluble organic matter by solid‐state nuclear magnetic resonance spectroscopy with sub‐milligram sample by Pandey, M. K., Nishiyama, Y., Tekely, P.

“…We recorded one‐ and two‐dimensional solid‐state nuclear magnetic resonance spectra of meteoric insoluble organic matter with unprecedented sensitivity and…”
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Determination of Carbon-13 Chemical Shielding Tensor in the Liquid State by Combining NMR Relaxation Experiments and Quantum Chemical Calculations by Walker, O, Mutzenhardt, P, Tekely, P, Canet, D

“…Based on multifield NMR relaxation measurements and quantum chemistry calculations, a strategy aiming at the determination of the chemical shielding tensor…”
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Aged anthropogenic iodine in a boreal peat bog by Maillant, S., Sheppard, M.I., Echevarria, G., Denys, S., Villemin, G., Tekely, P., Leclerc-Cessac, E., Morel, J.L.

“…This in situ study assesses the long term sorption of I in a natural peat bog, a matter that is scarcely addressed but required for safety studies such as for…”
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NMR Cross-Polarization when T IS>T 1 ρ; Examples from Silica Gel and Calcium Silicate Hydrates by Klur, I, Jacquinot, J.-F, Brunet, F, Charpentier, T, Virlet, J, Schneider, C, Tekely, P

“…NMR cross-polarization (CP) measurements are usually analyzed assuming that the cross-polarization time T IS of magnetization transfer from the abundant I…”
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Time-Reverse ODESSA. A 1D Exchange Experiment for Rotating Solids with Several Groups of Equivalent Nuclei by Reichert, D., Zimmermann, H., Tekely, P., Poupko, R., Luz, Z.

“…A one-dimensional exchange experiment is proposed for magic-angle-spinning samples with several groups of equivalent nuclei undergoing internal exchange, such…”
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Relative susceptibility of the Iα and Iβ phases of cellulose towards acetylation by Sassi, Jean-François, Tekely, Piotr, Chanzy, Henri

“…The relative reactivity of the Iα and Iβ phases of Valonia cellulose toward partial homogeneous acetylation was investigated by FT-IR and CP/MAS 13C-NMR…”
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Characterization of Cross-Linked Rubber Materials via Proton Rotating-Frame Relaxation Measurements by Chaumette, H, Grandclaude, D, Tekely, P, Canet, D, Cardinet, C, Verschave, A

“…Proton relaxation times in the rotating frame, as obtained from the decay of nuclear magnetization locked along a radio frequency field B 1, have been measured…”
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Initial Conditions for Carbon-13 MAS NMR 1D Exchange Involving Chemically Equivalent and Inequivalent Nuclei by Tekely, P., Reichert, D., Zimmermann, H., Luz, Z.

“…A major problem in dynamic 1D 13C MAS NMR concerns the exchange between magnetically inequivalent, but chemically equivalent sites, whose signals are not…”
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Spatially Resolved Crystalline and Amorphous Components of Polymeric Materials by Carbon-13 Chemical Shift Imaging Performed with Radio-Frequency Field Gradients by Malveau, C, Grandclaude, D, Tekely, P, Beaume, F, Canet, D

“…It is shown that chemical shift imaging can be easily adapted to high-resolution solid-state experiments by means of radio-frequency field gradient technology…”
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PATROS—A New MAS Exchange Method Using Sideband Separation: Application to Poly(n-butylmethacrylate) by Reichert, D, Hempel, G, Luz, Z, Tekely, P, Schneider, H

“…The tr-ODESSA method (Reichert et al., J. Magn. Reson. 125, 245 (1997)), which is a 1D MAS experiment designed to monitor spin exchange involving both…”
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Hydrogen bonding pattern in N-benzoyl(- dl-)- l-phenylalanines as revealed by solid-state NMR spectroscopy by Potrzebowski, M.J, Schneider, C, Tekely, P

“…The nature of the hydrogen bonding pattern has been investigated in N-benzoyl- dl-phenylalanine ( 1) and N-benzoyl- l-phenylalanine ( 2) polymorphes by…”
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NMR Microscopy of an "Anisotropic" Polymer by Canet, D., Malveau, C., Grandclaude, D., Tekely, P., Beaume, F., Germain, Y.

“…Two different samples of high‐density polyethylene (HDPE) have been studied. One (isotropic) is extracted from the material core whereas the other…”
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Chemistry and Structure of Al(OH)/Organic Precipitates. A Small-Angle X-ray Scattering Study. 3. Depolymerization of the Al13 Polycation by Organic Ligands by Masion, A, Thomas, F, Tchoubar, D, Bottero, J. Y, Tekely, P

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Characterisation of thermally modified wood : Molecular reasons for wood performance improvement by TJEERDSMA, B. F, BOONSTRA, M, PIZZI, A, TEKELY, P, MILITZ, H

“…Relatively mild thermal treatments of wood according to a two step process which leads to improved dimensional stability and improved timber performance were…”
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Comparison of residual dipolar interactions in uncross-linked and cross-linked natural rubber by high-resolution solid-state NMR spectroscopy by EULRY, V, TEKELY, P, HUMBERT, F, CANET, D, MARCILLOUX, J

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Measurement of spin diffusion and intermolecular distances between chemically equivalent nuclei in rotating solids by Tekely, P., Potrzebowski, M.J., Dusausoy, Y., Luz, Z.

“…The one-dimensional exchange experiment ODESSA (Gérardy-Montouillout et al., J. Magn. Reson. A 123 (1996) 7–15) has been applied for measuring spectral spin…”
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Effect of proton chemical-shift anisotropy on double-quantum MAS NMR sideband patterns by Tekely, P., Demco, D.E., Canet, D., Malveau, C.

“…We present experimental and theoretical evidences of enhanced effects of chemical shift anisotropy on the double-quantum (DQ) dipolar spinning sideband…”
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Heteronuclear Overhauser effect measurements in surfactant systems. 1. The direct estimation of the distance between water and the micellar surface by Canet, D, Mahieu, N, Tekely, P

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Broadband magnetization transfer using moderate radio-frequency fields for NMR with very high static fields and spinning speeds by Weingarth, Markus, Bodenhausen, Geoffrey, Tekely, Piotr

“…A solid-state NMR scheme dubbed PARIS-xy affords efficient low-power recoupling of dipolar interactions between nuclei such as carbon-13 over a wide range of…”
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Chemical Shift Imaging in Rotating Solids by Radiofrequency Field Gradients by Malveau, C., Diter, B., Tekely, P., Canet, D.

“…A dedicated equipment has been designed for solid state NMR imaging in the spatial direction coinciding with the rotation axis of a13C CP/MAS probe. It…”
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