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. Author manuscript; available in PMC: 2018 Jun 20.
Published in final edited form as: J Phys Chem B. 2012 Jun 7;116(24):7055–7065. doi: 10.1021/jp300539j

Figure 6.

Figure 6

1H bulk-polarization build-up curves for SE DNP based on the endogenous SQ radical (SQ) or CE DNP based on TOTAPOL (T). The kinetics of 1H polarization were compared for 1H-FD and 85% deuterated 2H-FD, for the SE and the CE DNP mechanisms. Measurements were performed at a field position corresponding to DNP(+) in Figure 4. Data points were fit using a mono-exponential recovery curve (Eq. 1, methods section) to obtain build-up time constants, τB. All traces are normalized to a maximum signal intensity of one.