Spectral editing in MAS NMR of aprotic solids P-31-Cd-113 cross-polarization and heteronuclear double-quantum filtering studies in II-IV-V-2 semiconductor alloys

被引：4

作者：

Franke, Deanna ^{[1
]}

Hudalla, Christopher ^{[1
]}

Eckert, Hellmut ^{[1
]}

机构：

[1] Univ Calif Santa Barbara, Dept Chem, Santa Barbara, CA 93106 USA

来源：

SOLID STATE NUCLEAR MAGNETIC RESONANCE | 1993年 / 1卷 / 06期

基金：

美国国家科学基金会;

关键词：

cross-polarization; double-quantum filtering; semiconductor;

D O I：

10.1016/0926-2040(93)90011-B

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Magic-angle-spinning NMR spectra of aprotic solids, ceramics and glasses frequently suffer from poor site resolution due to wide chemical shift distribution effects. In such cases, cross-polarization and heteronuclear double-quantum filtering experiments involving nuclei other than H-1 offer unique spectral editing capabilities. The utility of such assignment techniques for examining site populations in semiconductor alloys is demonstrated for the chalcopyrite systems CdGeAs2-xPx, CdSiAs2-xPx and ZnxCd1-xGeP2. The results permit a distinction between local and non-local effects on experimental chemical shift trends and reveal that compositional dependences observed in these alloys are dominated by non-local chemical shift contributions.

引用

页码：297 / 306

页数：10

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