Co-acquisition of hyperpolarised 13C and 15N NMR spectra.
Recent developments in dynamic nuclear polarisation now allow significant enhancements to be generated in the cryo solid state and transferred to the liquid state for detection at high resolution. We demonstrate that the Ardenkjaer-Larsen method can be extended by taking advantage of the properties of the trityl radicals used. It is possible to hyperpolarise 13C and 15N simultaneously in the solid state, and to maintain these hyperpolarisations through rapid dissolution into the liquid state. We demonstrate the almost simultaneous measurement of hyperpolarised 13C and hyperpolarised 15N NMR spectra. The prospects for further improvement of the method using contemporary technology are also discussed.
Pfizer Global Research and Development, Sandwich Laboratories, Sandwich, Kent, CT13 9NJ, UK. i.j.day@sussex.ac.uk
Iain J
IJ
Day
John C
JC
Mitchell
Martin J
MJ
Snowden
Adrian L
AL
Davis
D002247:Carbon Isotopes; D005609:Free Radicals / Q000737:chemistry / Q000528:radiation effects; D008872:Microwaves; D009536:Niacinamide / Q000737:chemistry / Q000528:radiation effects; D009587:Nitrogen Isotopes; D019906:Nuclear Magnetic Resonance, Biomolecular / Q000379:methods*; D011720:Pyrazoles / Q000737:chemistry / Q000528:radiation effects; D012680:Sensitivity and Specificity
D002247:Carbon Isotopes; D005609:Free Radicals; D009587:Nitrogen Isotopes; D011720:Pyrazoles; D009536:Niacinamide; C082360:fipronil