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79867 |
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|a Haze, Olesya
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|a Massachusetts Institute of Technology. Department of Chemistry
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|a Francis Bitter Magnet Laboratory
|q (Massachusetts Institute of Technology)
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|a Swager, Timothy M.
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|a Haze, Olesya
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|a Corzilius, Bjorn
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|a Smith, Albert A.
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|a Griffin, Robert Guy
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|a Swager, Timothy Manning
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|a Smith, Albert A.
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|a Corzilius, Bjorn
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|a Griffin, Robert Guy
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|a Swager, Timothy M
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|a Water-Soluble Narrow-Line Radicals for Dynamic Nuclear Polarization
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|b American Chemical Society (ACS),
|c 2013-08-14T17:01:46Z.
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|z Get fulltext
|u http://hdl.handle.net/1721.1/79867
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|a The synthesis of air-stable, highly water-soluble organic radicals containing a 1,3-bis(diphenylene)-2-phenylallyl (BDPA) core is reported. A sulfonated derivative, SA-BDPA, retains the narrow electron paramagnetic resonance linewidth (<30 MHz at 5 T) of the parent BDPA in highly concentrated glycerol/water solutions (40 mM), which enables its use as polarizing agent for solid effect dynamic nuclear polarization (SE DNP). A sensitivity enhancement of 110 was obtained in high-field magic-angle-spinning (MAS) NMR experiments. The ease of synthesis and high maximum enhancements obtained with the BDPA-based radicals constitute a major advance over the trityl-type narrow-line polarization agents.
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|a National Institutes of Health (U.S.). (Grant GM095843)
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|a National Institutes of Health (U.S.). (Grant EB002804)
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|a National Institutes of Health (U.S.). (Grant EB002026)
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|a en_US
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|a Article
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|t Journal of the American Chemical Society
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