Magic angle spinning
A robust pulse sequence for the determination of small homonuclear dipolar couplings in magic angle spinning NMR
... Solid-state nuclear magnetic resonance (NMR) is an increasingly powerful method for addressing molecular structural problems [1–20]. An important factor has been the combination of magic-angle ...
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Metabolic Profiling of Intact Arabidopsis thaliana Leaves during Circadian Cycle Using 1H High Resolution Magic Angle Spinning NMR.
... resolution-magic angle spinning nuclear magnetic resonance (HR- MAS NMR) was applied to obtain the metabolic profile directly from intact Arabidopsis ...
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Symmetry based pulse sequences in magic angle spinning solid state NMR
... The behavior of the CSA terms under R18 7 1 symmetry is shown in Figure 6(a). The left-hand side shows the two space branches with m = 1 and 2. The m = 0 component vanishes in the case of exact magic-angle ...
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Strong coupling induced damping of spin echo modulations in magic angle spinning NMR:implications for J coupling measurements in disordered solids
... or via the modulation they impart to spin-echo signal intensities. It is well known that under strong coupling, additional peaks known as “strong-coupling artefacts” can appear in NMR spectra [1–3]. While strong coupling ...
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Multiple-spin effects in fast magic angle spinning Lee-Goldburg cross-polarization experiments in uniformly labeled compounds
... cross-polarization magic angle spinning 共 LG-CP MAS 兲 nuclear magnetic resonance experiments on uniformly 13 C-labeled compounds at high spinning frequency is ...
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High-resolution magic angle spinning NMR studies for metabolic characterization of Arabidopsis thaliana mutants with enhanced growth characteristics
... high-resolution magic angle spinning nuclear magnetic resonance (HR-MAS NMR) to obtain the metabolic profile directly from intact wild-type Ara- bidopsis leaves ...
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Additive Effects of Rare Earth Ions in Sodium Aluminoborate Glasses Using 23Na and 27Al Magic Angle Spinning Nuclear Magnetic Resonance
... which can all be quantitatively measured by magic angle spinning nuclear mag- netic resonance (MAS NMR) [3] [4]. Using structural analysis of aluminate glasses using MAS NMR, it has been clarified ...
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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
... resolution magic angle spinning nuclear magnetic resonance (HRMAS NMR) spectroscopy [1-3] has the potential to efficiently distin- guish cancerous and healthy tissues ...
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Structure of ancient glass by 29Si magic angle spinning NMR
... Si magic angle spinning (MAS) NMR spectroscopy is widely used for structural analysis of silicate glasses, 1-4 resulting in a direct measure of the relative amounts of the Q n tetrahedra in the ...
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Thermometers for low temperature Magic Angle Spinning NMR
... a Magic Angle Spinning (MAS) NMR experiment is not straightforward since it can be affected by frictional and rf heating, as well as by the temperature of the gases used for drive and ...
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A fast magic angle spinning three dimensional NMR experiment for simultaneously probing H H and N H proximities in solids
... Within the context of small and moderately sized organic molecules, 1 H solid-state NMR is fi nding increasing application for the solid-state characterization of a range of samples including pharmaceuticals, ...
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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
... Many zeolites, including ZSM-5 and BEA, have been characterised by monitoring the interaction between the zeolite acid sites and test molecules, such as 1,3,5-triisopropylbenzene, py[r] ...
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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
... icantly even at 70 kHz MAS. There is also a sizable reduction in intensity for the nitrogen bound NHa I and NHa II protons, however this reduction is less than 20% and hence these signals are still clearly evident at ...
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C-13 Magic angle spinning NMR evidence for a 15, 15'-Z configuration of the sheroidene chromophore in the Rhodobacter Sphaeroides reaction center; synthesis of 13C- and 2H-labelled spheroidenes
... Finally, time-resolved Raman spectroscopy of RCs reconstituted with isotope- labelled spheroidenes may give information about the structure-function relation of the caro[r] ...
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Two dimensional 1H and 1H detected NMR study of a heterogeneous biocatalyst using fast MAS at high magnetic fields
... However, magic angle spinning NMR (MAS NMR) can be used to characterize heterogeneous systems and has been demonstrated in the study of a variety of immobilized enzymes and ...
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Electron energy loss spectroscopy of core-electron excitation in anisotropic systems: Magic angle, magic orientation, and dichroism
... for magic angle conditions valid for all anisotropic ...the magic angle is equivalent to orientationally averaged ...for magic angle conditions analysis reported in the ...
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Towards dipolar recoupling in macroscopically ordered samples of membrane proteins rotating at the magic angle
... Magic angle spinning (MAS) is an essential NMR technique for studying disordered samples of biological materials such as biomembranes [1]. The large variety of applications involves for example ...
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Composition and structure of natural organic matter through advanced nuclear magnetic resonance techniques
... and HMQC can only detect protonated carbons. Thus, these studies completely lose the nonprotonated struc- tural information. In addition, the characterization of insoluble fractions is also examined. To some extent, ...
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Structure refinement of photosynthetic components with multidimensional MAS NMR dipolar correlation spectroscopy
... In dit proefschrift wordt aangetoond dat protonen benut kunnen worden in toekennings- en structuurverfijningsstudies van biologische systemen in de vaste stof met behulp van cross- polarization (CP) ...
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Studying hydrogen bonding and dynamics of the acetylate groups of the Special Pair of Rhodobacter sphaeroides WT
... Analysis of the Electronic Structure of the Special Pair of a Bacterial Photosynthetic Reaction Center by 13C Photochemically Induced Dynamic Nuclear Polarization Magic-Angle Spinning N[r] ...
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