Solid State Magic Angle Spinning (MAS) Nuclear Magnetic
Improved characterization of pure and formulated active pharmaceutical ingredients by fast magic angle spinning solid-state NMR spectroscopy
... fast magic angle spinning solid-state NMR spectroscopy to characterize pure and formulated ...the solid forms of dilute API within ...
127
Additive Effects of Rare Earth Ions in Sodium Aluminoborate Glasses Using 23Na and 27Al Magic Angle Spinning Nuclear Magnetic Resonance
... We conducted structural analysis of x Na 2 O- y Y 2 O 3 -5B 2 O 3 -3Al 2 O 3 and x Na 2 O- y La 2 O 3 -5B 2 O 3 -3Al 2 O 3 glasses to elucidate the additive effects of rare-earth ions in these sodium aluminoborate ...
19
Thermometers for low temperature Magic Angle Spinning NMR
... interested in 13 C NMR that its Larmor frequency is very close and only a slight probe retuning is necessary. A disadvantage of a relaxation time rather than a shift thermometer is that temperature gradients across the ...
16
High-Field Magic Angle Spinning Dynamic Nuclear Polarization Using Radicals Created by γ-Irradiation
... High-field magic angle spinning dynamic nuclear polarization (MAS DNP) is often used to enhance the sensitivity of solid-state nuclear magnetic resonance (ssNMR) ...
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Enhancing the Sensitivity of Solid-State NMR Experiments with Very Low Gyromagnetic Ratio Nuclei with Fast Magic Angle Spinning and Proton Detection
... for solid-state NMR experiments with very low-γ spin-1/2 nuclei such as 89 Y, 103 Rh, 109 Ag and 183 ...of solid-state NMR experiments with 4 mm and ...HETCOR solid-state NMR ...
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Solid-state nuclear magnetic resonance spectroscopy of cements
... non-clinkerebased cements such as AAMs, can also offer signifi- cant reductions in CO 2 emissions. The materials used as SCMs are often crystallographically disordered, compositionally variable and multiphase in nature. ...
43
Advances in Theory of Solid-State Nuclear Magnetic Resonance
... full spinning sideband pattern that is of importance in many MAS experimental circumstances to obtain information on anisotropic sample ...quadrupolar nuclear spin ...
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The use of a selective saturation pulse to suppress t1 noise in two dimensional 1H fast magic angle spinning solid state NMR spectroscopy
... this spinning frequency when the selective pulse is ...higher magnetic fields (700 MHz in this case) and the t 1 noise suppression abilities of the selective saturation pulse combine to render this an ...
10
Solid-state nuclear magnetic resonance spectroscopy of phosphazene polymers
... Hz to 100’s kHz. The coupling constant D IS between spin I and spin S is proportional to their gyromagnetic ratios, γ I , γ S , and the internuclear distance, r IS , as follows: D IS = µ 0 γ I γ S 4πr 3 IS (13) Strong ...
201
Multinuclear Solid-State Nuclear Magnetic Resonance Spectroscopy of Microporous Materials
... ultrafast magic-angle spinning (MAS) 30,31 and “isotopic ( 2 H) ...high magnetic fields provides an additional benefit in spectral resolution since chemical shifts (in Hz) scale linearly with ...
269
Mesoporous Silica Nanoparticles Loaded with Surfactant: Low Temperature Magic Angle Spinning 13C and 29Si NMR Enhanced by Dynamic Nuclear Polarization
... scale, solid- state nuclear magnetic resonance (SS-NMR) spectroscopy is very well suited to the study of mesoporous ...dynamic nuclear polarization (DNP) can boost the sensitivity, ...
10
From crystalline to amorphous calcium pyrophosphates: a solid state nuclear magnetic resonance perspective
... Ca solid state NMR First principles GIPAW calculations a b s t r a c t Hydrated calcium pyrophosphates (CPP, Ca 2 P 2 O 7 nH 2 O) are a fundamental family of materials among osteoarticular pathologic ...
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Solid state nuclear magnetic resonance on quadrupolar nuclei in disordered catalysis based materials
... Modern MAS NMR probes use high pressure gas to spin cylindrical sample containers with fluted caps, called rotors. Smaller rotors can be spun very fast (up to 111 KHz), 22 and can therefore achieve great resolution. ...
157
Solid-State Nuclear Magnetic Resonance Spectroscopy of Unreceptive Quadrupolar Nuclei in Inorganic Materials
... Zn solid-state NMR experiments were conducted at ...under magic-angle spinning rate of 5 kHz; the rotors were spun using dry nitrogen ...
291
Analysis of potentially mobile phosphorus in arable soils using solid state nuclear magnetic resonance
... P nuclear magnetic resonance (NMR) spectroscopy, high- surface or overland flow P loss data to predict an envi- power decoupling with magic angle spinning (HPDec–MAS) NMR, ronmentally ...
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Symmetry based pulse sequences in magic angle spinning solid state NMR
... Schemes such as C7 are based on repeated radio-frequency cycles, shifted in phase and synchronized with the sample rotation. Each cycle is designed to return the nuclear spins to their initial states, if other ...
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Accessibility and Location of Acid Sites in Zeolites as Probed by Fourier Transform Infrared Spectroscopy and Magic Angle Spinning Nuclear Magnetic Resonance279-290
... and nuclear magnetic resonance (NMR) characterisation of acidity in zeolites based on the application of test molecules with a diverse range of basicity and kinetic ...
12
Longer range distances by spinning angle encoding solid state NMR spectroscopy
... new spinning-angle-encoding spin-echo solid-state NMR approach is used to accurately determine the dipolar coupling corresponding to a C-C distance over 4 Å in a fully labelled ...off ...
6
Experimental and Theoretical Studies in Solid-state Nuclear Magnetic Resonance
... Our solid- state NMR results vary greatly from those previously reported in that our results show two unique proton and carbon environments indicating a highly symmetric adduct rather than a distinction ...
146
Towards real time metabolic profiling of a biopsy specimen during a surgical operation by 1H high resolution magic angle spinning nuclear magnetic resonance: a case report
... Figure 3 Combined histopathological analysis and metabolic profiling of colon samples originating from a patient affected with an adenocarcinoma. A macroscopic view of the colectomy specimen (total length 10 cm) ...
6