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High-Field [superscript 13] C Dynamic Nuclear Polarization with a Radical Mixture

Author(s)
Michaelis, Vladimir K.; Smith, Albert A.; Haze, Olesya; Corzilius, Bjorn; Griffin, Robert Guy; Swager, Timothy M; ... Show more Show less
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Abstract
We report direct [superscript 13]C dynamic nuclear polarization at 5 T under magic-angle spinning (MAS) at 82 K using a mixture of monoradicals with narrow EPR linewidths. We show the importance of optimizing both EPR linewidth and electron relaxation times by studying direct DNP of [superscript 13]C using SA-BDPA and trityl radical, and achieve [superscript 13]C enhancements above 600. This new approach may be best suited for dissolution DNP and for studies of [superscript 1]H depleted biological and other nonprotonated solids.
Date issued
2013-02
URI
http://hdl.handle.net/1721.1/94625
Department
Massachusetts Institute of Technology. Department of Chemistry; Francis Bitter Magnet Laboratory (Massachusetts Institute of Technology)
Journal
Journal of the American Chemical Society
Publisher
American Chemical Society (ACS)
Citation
Michaelis, Vladimir K., Albert A. Smith, Bjorn Corzilius, Olesya Haze, Timothy M. Swager, and Robert G. Griffin. “High-Field [superscript 13] C Dynamic Nuclear Polarization with a Radical Mixture.” Journal of the American Chemical Society 135, no. 8 (February 27, 2013): 2935–2938.
Version: Author's final manuscript
ISSN
0002-7863
1520-5126

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