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. Author manuscript; available in PMC: 2015 May 25.
Published in final edited form as: Phys Chem Chem Phys. 2010 May 7;12(22):5850–5860. doi: 10.1039/c003685b

Fig. 8.

Fig. 8

DNP polarization build-up and signal enhancement, ε, for 0.1 M U-13C-15N-proline in glycerol-d8–D2O–H2O (60 : 30 : 10 volume ratio), red circles, and in glycerol–H2O (60 : 40 volume ratios), blue circles, both with 10 mM TOTAPOL. Polarization build-up measured with 1H saturation recovery with 13C CP detection and normalized for maximum value of 2H solvent. 4 scans per point, ωr/2π = 8 kHz, 97 K sample temperature, microwaves on continuously. The dashed lines through the data points show the fit to a single exponential function.