Michaelis VK, Markhasin E, Daviso E, Herzfeld J, Griffin RG. Dynamic Nuclear Polarization of Oxygen-17.
J Phys Chem Lett 2012;
3:2030-2034. [PMID:
23024834 PMCID:
PMC3459188 DOI:
10.1021/jz300742w]
[Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Oxygen-17 detected DNP NMR of a water/glycerol glass enabled an 80-fold enhancement of signal intensities at 82 K, using the biradical TOTAPOL. The >6,000-fold savings in acquisition time enables (17)O-(1)H distance measurements and heteronuclear correlation experiments. These experiments are the initial demonstration of the feasibility of DNP NMR on quadrupolar (17)O.
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