@article {421,
	title = {Cross-polarization from quadrupolar nuclei to silicon using low-radio-frequency amplitudes during magic-angle spinning},
	journal = {Journal of Physical Chemistry B},
	volume = {101},
	year = {1997},
	note = {J Phys Chem BWu630Times Cited:51Cited References Count:50},
	month = {Apr 17},
	pages = {3240-3249},
	abstract = {<p>The dynamics of cross-polarization from the central transition of a quadrupolar nucleus (Al-27 or Na-23) to a spin-1/2 nucleus (Si-29) during magic-angle spinning and using low-radio-frequency Geld 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 Si-29 NMR sensitivity and several applications are demonstrated.</p>
},
	keywords = {locking},
	isbn = {1089-5647},
	doi = {Doi 10.1021/Jp9623711},
	url = {<Go to ISI>://WOS:A1997WU63000031},
	author = {DePaul, S. M. and Ernst, M. and Shore, J. S. and Stebbins, J. F. and Pines, A.}
}
