HIGH-FREQUENCY (140 GHZ) DYNAMIC NUCLEAR-POLARIZATION - POLARIZATION TRANSFER TO A SOLUTE IN FROZEN AQUEOUS-SOLUTION

被引：155

作者：

GERFEN, GJ

BECERRA, LR

HALL, DA

GRIFFIN, RG

TEMKIN, RJ

SINGEL, DJ

机构：

[1] MIT,FRANCIS BITTER NATL MAGNET LAB,CAMBRIDGE,MA 02139

[2] MIT,DEPT CHEM,CAMBRIDGE,MA 02139

[3] MIT,CTR PLASMA FUS,CAMBRIDGE,MA 02139

[4] MONTANA STATE UNIV,DEPT CHEM,BOZEMAN,MT 59717

来源：

JOURNAL OF CHEMICAL PHYSICS | 1995年 / 102卷 / 24期

关键词：

D O I：

10.1063/1.468818

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：

Dynamic nuclear polarization (DNP) transfers the large polarization of unpaired electrons to nuclei and thus significantly enhances the signal strength in nuclear magnetic resonance (NMR) spectroscopy. High frequency/field (140 GHz/5 T) DNP has been implemented in solid state NMR experiments using a nitroxide radical as the paramagnetic polarizing agent in a watenglycerol frozen solution. The 1H and 13C NMR signal strengths of both the solvent and an amino acid solute have been enhanced by a factor of 185, which represents a reduction of >102 in sample size requirements or >104 in signal acquisition time. © 1995 American Institute of Physics.

引用

页码：9494 / 9497

页数：4

共 23 条

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