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. Author manuscript; available in PMC: 2014 Feb 27.
Published in final edited form as: J Am Chem Soc. 2013 Feb 13;135(8):2935–2938. doi: 10.1021/ja312265x

Figure 2.

Figure 2

Field-dependent 13C DNP enhancement profiles of SA-BDPA (B), trityl (C), and a mixture (D), with EPR spectra of SA-BDPA and trityl (A). Field profiles were recorded at 82 K with a microwave frequency of 139.66 GHz, 8 W of microwave power and a MAS frequency of 4.8 kHz.