Beyond the Silica Surface by Direct Silicon-29 Dynamic Nuclear Polarization

被引：112

作者：

Lafon, Olivier ^{[1
]}

Rosay, Melanie ^{[2
]}

Aussenac, Fabien ^{[3
]}

Lu, Xingyu ^{[1
]}

Trebosc, Julien ^{[1
]}

Cristini, Odile ^{[4
]}

Kinowski, Christophe ^{[4
]}

Touati, Nadia ^{[5
]}

Vezin, Herve ^{[5
]}

Amoureux, Jean-Paul ^{[1
]}

机构：

[1] Univ Lille Nord France, UCCS, UMR CNRS 8181, Ecole Natl Super Chim Lille, F-59652 Villeneuve Dascq, France

[2] Bruker Biospin Corp, Billerica, MA 01821 USA

[3] Bruker Biospin SA, F-67166 Wissembourg, France

[4] Univ Lille 1 Sci & Technol, Lab Phys Lasers Atomes & Mol Phlam, CNRS UMR 8523, F-59655 Villeneuve Dascq, France

[5] Univ Sci & Technol Lille, Lab Spectrochim Infrarouge & Raman, UMR CNRS 8516, F-59655 Villeneuve Dascq, France

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2011年 / 50卷 / 36期

关键词：

dynamic nuclear polarization; mesoporous materials; NMR spectroscopy; silicon; SOLID-STATE NMR; SPECTROSCOPY;

D O I：

10.1002/anie.201101841

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Buried truth: High-field magic angle spinning dynamic nuclear polarization (MAS DNP) enhances the sensitivity of solid-state NMR spectroscopy, but only for protonated surfaces. Direct 29Si DNP using the biradical TOTAPOL (see picture) circumvents this limitation by producing a 30-fold enhancement of subsurface 29Si NMR signals in mesoporous silica, a material with applications in photonics, nanotechnology and catalysis. © 2011 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：8367 / 8370

页数：4

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