13 C CP/MAS solid state NMR of organically functionalized materials
Multinuclear solid state NMR for the characterisation of inorganic materials
... the solid-state NMR spectra harder to ...A NMR experiment that can be used to reduce the impact of a number of these interactions is magic-angle spinning ...2-4 MAS is routinely used in ...
401
Solid-state NMR of Complex Nano- and Microcrystalline Materials
... 47,50,77–79 MAS rates of ...Unfortunately, MAS experiments are not generally useful for patterns with breadths on the order of 100 kHz or more, especially for quadrupolar ...First, MAS only results ...
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Characterization of Inorganic Catalysts and Materials by Solid-State NMR
... to Cp 2 ZrCl 2 and 1, but Ω = 550 ppm, which is significantly larger than those of the chlorinated ...of Cp 2 ZrBr 2 provide a relatively poor match with the low frequency discontinuity of the static ...
447
Solid state NMR studies of inorganic pigment materials and catalysts
... of the interaction is relatively small. As the quadrupolar interaction is dominant over the CSA interaction in the central line, this implies that the CSA interaction is also very small. There is some distribution in the ...
202
Diffraction and Solid State NMR Studies of Inorganic Framework Materials.
... O NMR probes into the local oxygen environment and provides localised information about the oxygen ...sites. NMR can be used to investigate dynamic processes although prior to 2002 it had not been commonly ...
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Characterisation of inorganic materials using solid state NMR spectroscopy
... from MAS experiments, 32,33 and a number of fitting procedures have been proposed over the years in order to extract the CSA parameters in this ...the MAS rate, to be made and then compared with ...
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Galacturonic Acid Content and Degree of Esterification of Pectin from Sweet Potato Starch Residue Detected Using 13C CP/MAS Solid State NMR
... wall materials were dispersed in 250 mL ...pectin materials was neutralised with 32% NaOH (Laboratory UNILAB Reagent AJAX), then the same volume of 95% ethanol was added, the mixture was stirred for 5 ...
22
The use of solid state NMR to monitor reactions and doping in inorganic materials
... The NMR probe can be considered to be the one of the most important parts of the NMR ...the NMR probe may also contain additional equipment for the application of MAS, variable temperature, or ...
182
Recent technique developments and applications of solid state NMR in characterising inorganic materials
... amorphous materials the use of MQDOR to remove line broadening interactions allows the chemical shift and EFG distributions to be directly determined which is difficult from other approaches such as multiple field ...
45
Assessing the detection limit of a minority solid state form of a pharmaceutical by 1H double quantum MAS NMR spectroscopy
... MHz solid-state NMR Facility used in this research was funded by EPSRC and BBSRC, as well as the University of Warwick including via part funding through Birmingham Science City Advanced ...
27
Carbon 13 Solid State NMR Techniques to Evaluate the Morphology of PP/TiO2 Composites
... Abstract Solid state NMR was successfully used to determine the proton spin-lattice relaxation time in the rotating frame (T 1 ρH) for systems based on polypropylene (PP) and PP with titanium dioxide ...
6
Development of solid state NMR to understand materials involved in catalytic technology used in fuel cells
... Figure 6.8: The quadrupole coupling parameter and isotropic shift plots for the BZA and the series of group IA hemibenzoates. calculated DFT parameters. The hydroxyl (site 2) shows a decreased shift and P Q as also ...
203
New Directions for Solid-State NMR of Insensitive Nuclei: Applications to Metal Nuclei in Inorganic Materials
... in MAS spectra is highly dependent upon both peak positions and ...stable MAS speeds), we are sceptical of the intensities of the SSBs on the outer limits of broad MAS patterns and their relation to ...
422
New Directions for Solid-State NMR of Insensitive Nuclei: Applications to Metal Nuclei in Inorganic Materials
... in MAS spectra is highly dependent upon both peak positions and ...stable MAS speeds), we are sceptical of the intensities of the SSBs on the outer limits of broad MAS patterns and their relation to ...
422
Perspective : current advances in solid state NMR spectroscopy
... powdered materials are generally not magnetically isotropic; different particle orientations will have different magnetic susceptibilities, and hence different effective local magnetic ...by MAS, and these ...
27
THE ELUCIDATION OF CELLULOSE SUPRAMOLECULAR STRUCTURE BY 13 C CP-MAS NMR
... Notably, Larsson assigns the broad resonance between about 79 and 86 ppm – previously denoted as non-crystalline or less-ordered cellulose – exclusively in terms of material located at the fibril surfaces. The ...
9
The use of variable temperature 13 C solid state MAS NMR and GIPAW DFT calculations to explore the dynamics of diethylcarbamazine citrate
... 13 b Calculated isotropic chemical shifts are given by iso calc = ref – calc , where ref was 30 ppm for 1 H and 153 ppm for 14 N/ 15 N. For 13 C, two shielding references were 1 determined: ...
20
Solid state NMR studies of ferroelectric relaxor materials
... Multi-nuclear solid state nuclear magnetic resonance has been used to investigate the local atomic structure of the relaxor ferroelectric materials, lead magnesium [r] ...
208
13C CP/MAS NMR spectra of pectins: a peak fitting analysis in the C 6 region
... OCOCH 3 present in sugar beet pectins cannot be resolved due to overlapping by the intense C-6 signal. The COO – resonance (176–175 ppm) is a little shifted downfield in comparison to the other forms that have ...
12
Recent developments in solid state NMR spectroscopy of crystalline microporous materials
... for materials with less well-characterised structures, where potential models can be evaluated by considering the agreement between predicted NMR parameters and those observed ...and NMR spectroscopy ...
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