Title
Cross Polarization From Quadrupolar Nuclei to Silicon Using Low Radio-Frequency Amplitudes During Magic-Angle Spinning
Document Type
Article
Publication Date
4-1997
Abstract
The dynamics of cross-polarization from the central transition of a quadrupolar nucleus (27Al or 23Na) to a spin-1/2 nucleus (29Si) during magic-angle spinning and using low-radio-frequency field strengths are analyzed for the mineral low albite. Under these conditions additional complications in the spin-lock behavior of the quadrupolar nucleus and in the cross-polarization process were found experimentally and are examined in detail. A step-by-step procedure for optimizing cross-polarization from the central transition of a quadrupolar nucleus to a spin-1/2 nucleus is described. Significant enhancement of 29Si NMR sensitivity and several applications are demonstrated.
Publication Title
Journal of Physical Chemistry
Volume
101
Issue
16
First Page
3240
Last Page
3249
DOI of Published Version
10.1021/jp9623711
Recommended Citation
DePaul, Susan M.; Ernst, Matthias; Shore, Jay S.; Stebbins, Jonathan F.; and Pines, Alexander, "Cross Polarization From Quadrupolar Nuclei to Silicon Using Low Radio-Frequency Amplitudes During Magic-Angle Spinning" (1997). Chemistry and Biochemistry Faculty Publications. 96.
https://openprairie.sdstate.edu/chem_pubs/96