Dynamic Nuclear Polarization Enhanced Natural Abundance 17O Spectroscopy

被引：126

作者：

Blanc, Frederic ^{[1
,2
]}

Sperrin, Luke ^{[1
]}

Jefferson, David A. ^{[1
]}

Pawsey, Shane ^{[3
]}

Rosay, Melanie ^{[3
]}

Grey, Clare P. ^{[1
,4
]}

机构：

[1] Univ Cambridge, Dept Chem, Cambridge CB2 1EW, England

[2] Univ Liverpool, Stephenson Inst Renewable Energy, Dept Chem, Liverpool L69 7ZD, Merseyside, England

[3] Bruker BioSpin Corp, Billerica, MA 01821 USA

[4] SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2013年 / 135卷 / 08期

基金：

英国工程与自然科学研究理事会;

关键词：

SOLID-STATE NMR; INTEGER QUADRUPOLAR NUCLEI; MAS-NMR; CROSS-POLARIZATION; POPULATION; CHEMISTRY; OXYGEN;

D O I：

10.1021/ja4004377

中图分类号：

O6 [化学];

学科分类号：

070301 [无机化学];

摘要：

We show that natural abundance oxygen-17 NMR of solids could be obtained in minutes at a moderate magnetic field strength by using dynamic nuclear polarization (DNP). Electron spin polarization could be transferred either directly to O-17 spins or indirectly via H-1 spins in inorganic oxides and hydroxides using an oxygen-free solution containing a biradical polarization agent (bTbK). The results open up a powerful method for rapidly acquiring high signal-to-noise ratio solid-state NMR spectra of O-17 nuclear spins and to probe sites on or near the surface, without the need for isotope labeling.

引用

收藏

页码：2975 / 2978

页数：4

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