Fig. 6.

Contour plot of the headgroup and glycerol region of the 2D ¹³C-¹H correlation spectrum (top). The tilted dipolar doublets are indicated by solid lines. The doublets are due to ¹³C-³¹P and ¹H-³¹P dipolar interactions resulting in splittings of the ¹³C-¹H cross peaks along the horizontal axis and vertical axis, respectively. The experimental conditions are as mentioned for the PDLF spectrum in Fig. 3. Comparison to the ¹³C-¹H PDLF spectrum (bottom) was used to assign the peaks.