𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Shift-independent nuclear spin diffusion by slow magic-angle sample spinning for the exploration of solids

✍ Scribed by Zhehong Gan; R.R. Ernst

Book ID
103034829
Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
572 KB
Volume
253
Category
Article
ISSN
0009-2614

No coin nor oath required. For personal study only.

✦ Synopsis

An improved spin-diffusion experiment for the exploration of local order in solids is described. By slow magic-angle sample spinning, it is possible to remove the dependence of the spin diffusion rate on the chemical shift difference between two interacting nuclear spins, while the informative chemical shielding anisotropy is fully retained. Slow magic-angle spinning shortens the time necessary for the spin system to reach the quasi-equilibrium state, and it allows for rapid spin diffusion also in the absence of heteronuclear dipolar interactions in contrast to static or rapidly spinning samples. The feasibility of the experiment is demonstrated for a sample of carbon-13 labelled amorphous atactic polystyrene.

πŸ“œ SIMILAR VOLUMES

Characterization of very young mineral p
Characterization of very young mineral phases of bone by solid state31Phosphorus magic angle sample spinning nuclear magnetic resonance and X-ray diffraction
✍ J. E. Roberts; L. C. Bonar; R. G. Griffin; M. J. Glimcher πŸ“‚ Article πŸ“… 1992 πŸ› Springer 🌐 English βš– 980 KB

The properties of bone mineral change with age and maturation. Several investigators have suggested the presence of an initial or "precursor" calcium phosphate phase to help explain these differences. We have used solid state 31P magic angle sample spinning (MASS) nuclear magnetic resonance (NMR) an

A simple procedure for the determination
A simple procedure for the determination of the quadrupole interaction parameters and isotropic chemical shifts from magic angle spinning NMR spectra of half-integer spin nuclei in solids
✍ GΓΌnter Engelhardt; Hubert Koller πŸ“‚ Article πŸ“… 1991 πŸ› John Wiley and Sons 🌐 English βš– 410 KB

## Abstract A simple procedure is presented for the determination of the asymmetry parameter of the electric field gradient, the quadrupole coupling constant, the second‐order quadrupolar shift and the isotropic chemical shift of quadrupolar nuclei with half‐integer spin directly from the experimen