Results 281 to 290 of about 268,686 (320)

Optical Pumping in Solid State Nuclear Magnetic Resonance

The Journal of Physical Chemistry, 1996
An important current trend in solid state nuclear magnetic resonance (NMR) is the growing exploitation of optical pumping of nuclear spin polarizations as a means of enhancing and localizing NMR signals. Recent work has been concentrated in two areas, namely optically pumped NMR in semiconductors and optical pumping of noble gases.
Robert Tycko, Jeffrey A. Reimer
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Solid state 31P nuclear magnetic resonance of tricyanophosphine

Polyhedron, 1991
Abstract The high resolution 31P NMR spectrum of solid tricyanophosphine is reported. The use of magic angle sample spinning gives the chemical shift much more accurately than the earlier wideline measurement, and spinning sideband analysis gives an improved estimate of the 31P chemical shift anisotropy: −96±5 ppm.
M.A.H.A. Al-Juboori, A. Finch, P.J. Gardner, C.J. Groombridge   +3 more
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Characterization of polyimides by and solid state nuclear magnetic resonance

Solid State Nuclear Magnetic Resonance, 1998
The polyimides LaRC-TPI, LaRC-IA and LaRC-SI and related model compounds were investigated using 13C and 1H nuclear magnetic resonance (NMR). Magic angle spinning was used to acquire 13C isotropic chemical shift spectra of these materials. The spectra were assigned as completely as possible.
Samuel J. Varner, Robert L. Vold, Gina L. Hoatson   +2 more
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Solid state 13C nuclear magnetic resonance for polyguanidines

Polymer, 2000
Abstract The structure and variations in dynamic motions of three polyguanidines possessing different side chains were studied by 13 C CP/MAS NMR. From these results, the structures of the polyguanidines were confirmed, and the 13 C spin–lattice relaxation times in the rotating frame were measured.
A.R Lim, J.H Kim, B.M Novak
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Quadrupole Effects in Solid-State Nuclear Magnetic Resonance

1993
The applicability of nuclear magnetic resonance (NMR) spectroscopy continues to expand in physics, chemistry, material science, geology, biology, and medicine. An increasing range of NMR techniques is employed for either spectroscopic studies or imaging purposes, most becoming possible because of the high magnetic fields of superconducting magnets ...
D. Freude, J. Haase
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ChemInform Abstract: Solid‐State Nuclear Magnetic Resonance

ChemInform, 1998
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
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Solid-State Nuclear Magnetic Resonance

Analytical Chemistry, 2002
Cecil, Dybowski, Shi, Bai, Scott, van Bramer   +2 more
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Solid-State Nuclear Magnetic Resonance in Pharmaceutical Compounds

2014
Abstract The solid-state characterization of novel pharmaceutical compounds remains an important issue. Solid-state NMR is one of the techniques of choice to gain information when other techniques are not available. Knowledge of the molecular structure in the solid state can lead to better design and control the behaviour of the drug as it affects ...
Monti, Gustavo Alberto, Chattah, Ana Karina, Garro Linck, Yamila   +2 more
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Solid state nuclear magnetic resonance studies of nanocarbons

Diamond and Related Materials, 2007
In the present article we review Nuclear Magnetic Resonance studies of different kinds of nanocarbons, such as nanodiamonds, nanographites, pure and doped fullerenes, giant carbon fullerenes and carbon nanotubes.
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Floquet theory in solid-state nuclear magnetic resonance

Progress in Nuclear Magnetic Resonance Spectroscopy, 2010
Michal, Leskes, P K, Madhu, Shimon, Vega
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