Diffusional behavior of probe molecules in polymer gels as studied by field-gradient NMR method

摘要

Polystyrene network gels have been used as the most popular polymer supports in solid-phase peptide synthesis, column chromatography, ion-exchange resins, polymer supports for catalysts, enzymes, etc. These functionalities are closely associated with diffusional behavior of solvents and probe molecules, intermolecular interactions between polymer chains and probe molecules, and also with structure and dynamics of polymer suppors. Super-High-Field-Gradient NMR method is a very useful tool to study these fields. From such a situation, we introduce simple theory, analytical method and annual research especially polystyrene gel. Then diffusing time (time scale of measurement) in this method were discussed.