Setting the magic angle for fast magic-angle spinning probes
نویسندگان
چکیده
منابع مشابه
Magic Angle Spinning NMR Metabolomics.
Nuclear Magnetic Resonance (NMR) spectroscopy is a nondestructive, quantitative, reproducible, untargeted and unbiased method that requires no or minimal sample preparation, and is one of the leading analytical tools for metabolomics research [1-3]. The easy quantification and the no need of prior knowledge about compounds present in a sample associated with NMR are advantageous over other tech...
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High static magnetic fields and very fast magic-angle spinning (MAS) promise to improve resolution and sensitivity of solid-state NMR experiments. The fast MAS regime has permitted the development of low-power cross-polarization schemes, such as second-order cross-polarization (SOCP), which prevent heat deposition in the sample. Those schemes are however limited in bandwidth, as weak radio-freq...
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The N· · ·H distance within the unusual hydrogen-bonding arrangement adopted by a pair of methylsubstituted benzoxazine dimers (C6H3(OH)2CH2)2N(CH3) has been determined by solid-state NMR to be 194 ± 5 pm. This indicates that the proton is shared between the nitrogen and oxygen atoms, with a preference for an O–H rather than an N–H bond character. It is to be noted that a previous X-ray single ...
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Environmentally significant materials including soils, plant tissues, melanin pigments, and urban surface films possess swollen or swellable constituents that are not studied ideally using either solutionor solid-state NMR. Beginning in the 1970s and accelerating during the past 15 years, high-resolution (HR)-MAS techniques have been developed to study these challenging materials, yielding unpr...
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ژورنال
عنوان ژورنال: Journal of Magnetic Resonance
سال: 2018
ISSN: 1090-7807
DOI: 10.1016/j.jmr.2018.06.002