Pulsed gradient spin-echo nuclear magnetic resonance PGSE

The microstructure of complex fluids such as ILs, surfactant systems, and liquid crystals can be profitably investigated by means of pulsed gradient spin-echo nuclear magnetic resonance (PGSE-NMR) experiments, a technique that allows the determination of the self-diffusion coefficients. 

Basically two nuclear magnetic resonance (NMR) techniques can be used to determine the partition coefficient. The first is based on the Fourier transform NMR pulsed-gradient spin echo (FT-PGSE) self-diffusion techiuque, the other by the NMR paramagnetic relaxation technique. In both techniques the fraction of solute in the micelle, a, is determined and can thus be calculated through Equation 6.10. 

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