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. Author manuscript; available in PMC: 2020 May 9.
Published in final edited form as: J Phys Chem C Nanomater Interfaces. 2019 Apr 11;123(18):11734–11744. doi: 10.1021/acs.jpcc.9b01538

Figure 4.

Figure 4

Examples of T1 (at ~3.6 atm pressure) and TLLS (at ~4.5 atm pressure) signal decays of HP propane and mono-exponential fitting are shown in a) and c); e) shows a corresponding example of LLS decay of HP propane-d6. Dependences of T1 (b) and TLLS (d) of propane hyperpolarization on its pressure. f) Dependence of TLLS of propane-d6 hyperpolarization on its pressure (an example of experimental data reporting on effective T1 for HP propane-d6 is shown in Figure S3). All data is acquired at 0.0475 T using production/reaction conditions of 75 °C and 2000 sccm flow rate with near-100% chemical conversion of pH2 and unsaturated substrates. See Scheme 1 for additional details.