Water-Soluble Narrow-Line Radicals for Dynamic Nuclear Polarization

被引：96

作者：

Haze, Olesya ^{[1
]}

Corzilius, Bjoern ^{[1
,2
]}

Smith, Albert A. ^{[1
,2
]}

Griffin, Robert G. ^{[1
,2
]}

Swager, Timothy M. ^{[1
]}

机构：

[1] MIT, Dept Chem, Cambridge, MA 02139 USA

[2] MIT, Francis Bitter Magnet Lab, Cambridge, MA 02139 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2012年 / 134卷 / 35期

关键词：

CORRELATION SPECTROSCOPY; NMR-SPECTROSCOPY; TRITYL RADICALS; C-13; NMR; RESONANCE; EPR; SOLIDS; BDPA;

D O I：

10.1021/ja304918g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The synthesis of air-stable, highly water-soluble organic radicals containing a 1,3-bis(diphenylene)-2-phenylallyl (BDPA) core is reported. A sulfonated derivative, SA-BDPA, retains the narrow electron paramagnetic resonance linewidth (<30 MHz at 5 T) of the parent BDPA in highly concentrated glycerol/water solutions (40 mM), which enables its use as polarizing agent for solid effect dynamic nuclear polarization (SE DNP). A sensitivity enhancement of 110 was obtained in high-field magic-angle-spinning (MAS) NMR experiments. The ease of synthesis and high maximum enhancements obtained with the BDPA-based radicals constitute a major advance over the trityl-type narrow-line polarization agents.

引用

页码：14287 / 14290

页数：4

共 40 条

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