@article {469,
	title = {Cross-Polarization Dynamic-Angle Spinning Nuclear-Magnetic-Resonance of Quadrupolar Nuclei},
	journal = {Molecular Physics},
	volume = {81},
	year = {1994},
	note = {Mol PhysNe628Times Cited:21Cited References Count:29},
	month = {Apr 10},
	pages = {1109-1124},
	abstract = {<p>The use of variable-angle spinning (VAS) with cross-polarization (CP) for quadrupolar nuclei has been evaluated both experimentally and theoretically. It is known that under normal spinning speeds the best VAS angle for performing CP is 0-degrees (parallel to the magnetic field). We show that, with the use of dynamic-angle spinning (DAS) probes, CP may be done at 0-degrees and detection in a one-dimensional VAS experiment may be performed at any angle in a zero-polarized VAS (ZPVAS) experiment. Finally, the combination of CP with k = 5 DAS (where the sample is spun first at 0-degrees followed by 63.43-degrees) provides both the highest resolution and the greatest sensitivity under normal conditions.</p>
},
	keywords = {probe},
	isbn = {0026-8976},
	doi = {Doi 10.1080/00268979400100741},
	url = {<Go to ISI>://WOS:A1994NE62800007},
	author = {Baltisberger, J. H. and Gann, S. L. and Grandinetti, P. J. and Pines, A.}
}
@article {496,
	title = {Correlation of Isotropic and Anisotropic Chemical-Shifts in Solids by 2-Dimensional Variable-Angle-Spinning Nmr},
	journal = {Israel Journal of Chemistry},
	volume = {32},
	year = {1992},
	note = {Israel J ChemKt517Times Cited:29Cited References Count:19},
	pages = {161-164},
	abstract = {<p>We describe a new solid-state nuclear magnetic resonance (NMR) technique for correlating anisotropic and isotropic chemical shifts in powdered samples. Two-dimensional (2D) NMR spectra are obtained by processing signals acquired in independent experiments for different angles between the sample spinning axis and the Zeeman magnetic field. This 2D NMR approach can therefore resolve individual static anisotropic lineshapes according to their isotropic chemical shift frequencies, without use of sudden mechanical motions or multiple-pulse irradiation schemes. Applications of the technique are illustrated with an analysis of the chemical shift anisotropy for the eight distinct C-13 sites in tyrosine.</p>
},
	keywords = {magic-angle},
	isbn = {0021-2148},
	url = {<Go to ISI>://WOS:A1992KT51700005},
	author = {Frydman, L. and Chingas, G. C. and Lee, Y. K. and Grandinetti, P. J. and Eastman, M. A. and Barrall, G. A. and Pines, A.}
}
