Literature DB >> 21285486

The effect of 13C enrichment in the glassing matrix on dynamic nuclear polarization of [1-13C]pyruvate.

Lloyd Lumata1, Zoltan Kovacs, Craig Malloy, A Dean Sherry, Matthew Merritt.   

Abstract

Dimethyl sulfoxide (DMSO) can effectively form a glassy matrix necessary for dynamic nuclear polarization (DNP) experiments. We tested the effects of (13)C enrichment in DMSO on DNP of [1-(13)C]pyruvate doped with trityl radical OX063Me. We found that the polarization build-up time τ of pyruvate in (13)C-labeled DMSO glassing solution is twice as fast as the unenriched DMSO while the nuclear magnetic resonance enhancement was unchanged. This indicates that (13)C-(13)C spin diffusion is a limiting factor in the kinetics of DNP in this system, but it has a minimal effect on the absolute value of polarization achievable for the target.

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Year:  2011        PMID： 21285486      PMCID： PMC3144154          DOI： 10.1088/0031-9155/56/5/N01

Source DB:  PubMed          Journal:  Phys Med Biol        ISSN： 0031-9155            Impact factor:   3.609


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  12 in total

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