@article {425,
	title = {Si-29 high resolution solid state nuclear magnetic resonance spectroscopy of porous silicon},
	journal = {Journal of Non-Crystalline Solids},
	volume = {202},
	year = {1996},
	note = {J Non-Cryst SolidsVe406Times Cited:13Cited References Count:33},
	month = {Jul},
	pages = {68-76},
	abstract = {<p>Porous silicon has been characterized by Si-29 nuclear magnetic resonance spectroscopy under conditions of static samples, magic angle spinning, decoupling and cross polarization. In a free induction decay experiment, two Si-29 resonances at -80 and -111 ppm were obtained. Cross polarization resulted in a single resonance at -97 ppm. Magic angle spinning and decoupling slightly reduce the linewidth of the Si-29 cross polarized signal, The minor narrowing effect and thr relaxation behavior in the laboratory and rotating frame indicate a homogeneous contribution to the linewidth. The relaxation data suggest that the resonance observed under cross polarization conditions arises from SiH or SiH2 structural elements.</p>
},
	keywords = {dipolar},
	isbn = {0022-3093},
	doi = {Doi 10.1016/0022-3093(96)00144-5},
	url = {<Go to ISI>://WOS:A1996VE40600008},
	author = {Pietrass, T. and Bifone, A. and Roth, R. D. and Koch, V. P. and Alivisatos, A. P. and Pines, A.}
}
@article {444,
	title = {Low-Power Decoupling Sequences for High-Resolution Chemical-Shift and Local-Field Nmr-Spectra of Liquid-Crystals},
	journal = {Journal of Magnetic Resonance Series A},
	volume = {113},
	year = {1995},
	note = {J Magn Reson Ser AQw158Times Cited:11Cited References Count:29},
	month = {Apr},
	pages = {169-176},
	abstract = {<p>Various new and well-established multiple-pulse sequences that provide homonuclear dipolar decoupling are compared on a high-resolution spectrometer/probe configuration using low RF-irradiation powers. Proton-proton decoupled carbon-13 spectra of singly C-13-labeled benzene dissolved in a nematic liquid crystal and of the liquid crystal 152 are presented. Two classes of multiple-pulse sequences are studied that produce either broadband decoupled carbon spectra or separated local-held spectra. Several new approaches for the design of windowless sequences are demonstrated to be valuable in these heteronuclear experiments. They include implementations of the iterative MLEV scheme and the use of 270 degrees pulses. Furthermore, noncyclic propagators have been found that exhibit advantages over closely related cyclic analogues in both classes of decoupling sequences. (C) 1995 Academic Press, Inc.</p>
},
	keywords = {dipolar},
	isbn = {1064-1858},
	doi = {Doi 10.1006/Jmra.1995.1077},
	url = {<Go to ISI>://WOS:A1995QW15800005},
	author = {Nanz, D. and Ernst, M. and Hong, M. and Ziegeweid, M. A. and Schmidt-Rohr, K. and Pines, A.}
}
