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. Author manuscript; available in PMC: 2017 Nov 4.
Published in final edited form as: Chemphyschem. 2016 Sep 5;17(21):3395–3398. doi: 10.1002/cphc.201600564

Figure 3.

Figure 3

(a) Proton polarization of HP propane as a function of catalyst concentration for two representative Rh-based catalysts; duration of p-H2 bubbling is 10 s. (b) Proton polarization of HP propane as a function of p-H2 bubbling time in three different pressure regimes. (c) Optimization of propane hyperpolarization by monitoring hyperpolarized 1H signal (of -CH2- group) by varying the temperature (estimated values) of the sample (p-H2 bubbling duration is 8 s). Experimental data shown in (b) and (c) is collected for [Rh(NBD)dppb]BF4 catalyst.