Fig. 2: Solid state NMR results measured as a function of temperature and pressure.

A 31P NMR at 4 kHz MAS of 3:1 and 7:1 POPE:POPG at 55 °C and either 0.1 MPa or 28 MPa. B 1H NMR at 4 kHz MAS of 3:1 and 7:1 POPE:POPG at 55 °C and either 0.1 MPa or 28 MPa, with peak assignments73. C 1H MAS spectra of 7:1 POPE:POPG above (top, 34 °C) and below (bottom, 18 °C) the gel-fluid transition temperature. D Plot of 1H CH2 intensity as a function of temperature for both samples at 0.1 MPa and 25 MPa, normalized to the highest intensity peak in each series. Dashed lines correspond to the derivative of 1H signal with temperature. Triangular symbols in the 7:1 POPE:POPG plot correspond to the spectra in C.