Over 35% liquid-state 13C polarization obtained via dissolution dynamic nuclear polarization at 7 T and 1 K using ubiquitous nitroxyl radicals.
The most versatile method to increase liquid-state (13)C NMR sensitivity is dissolution dynamic nuclear polarization. The use of trityl radicals is usually required to obtain very large (13)C polarization via this technique. We herein demonstrate that up to 35% liquid-state (13)C polarization can be obtained in about 1.5 h using ubiquitous nitroxyl radicals in (13)C-labeled sodium salts by partially deuterating the solvents and using a polarizer operating at 1 K and 7 T.
Institute of Physics of Biological System, École Polytechnique Fédérale de Lausanne, Switzerland. tian.cheng@epfl.ch.
Tian
T
Cheng
Andrea
A
Capozzi
Yuhei
Y
Takado
Riccardo
R
Balzan
Arnaud
A
Comment
D002247:Carbon Isotopes; D009682:Magnetic Resonance Spectroscopy; D009589:Nitrogen Oxides / Q000737:chemistry*; D012997:Solvents / Q000737:chemistry; D013696:Temperature
D002247:Carbon Isotopes; D009589:Nitrogen Oxides; D012997:Solvents; C039900:nitroxyl