From The DNP-NMR Blog:
Influence of deuteration in the glassing matrix on 13C dynamic nuclear polarization
Lumata, L., M.E. Merritt, and Z. Kovacs, Influence of deuteration in the glassing matrix on 13C dynamic nuclear polarization. Phys. Chem. Chem. Phys., 2013. 15(19): p. 7032-7035.
http://www.ncbi.nlm.nih.gov/pubmed/23552448
Replacement of protons by deuterons in the glassing solvents led to 2-3-fold improvement of the (13)C dynamic nuclear polarization (DNP) solid-state NMR signal for samples doped with large electron spin resonance (ESR) linewidth free radicals galvinoxyl, DPPH, and 4-oxo-TEMPO. Meanwhile, the reverse effect is observed for (13)C DNP using small ESR linewidth free radicals BDPA and trityl OX063.
Go to
The DNP-NMR Blog for more info.