Abstract

Crystalline β-cyclodextrin-water inclusion complexes were studied by continuous wave (CW) and pulse NMR methods. A series of samples with different water contents was prepared by vacuum drying. The CW results show decreasing motion of the carbohydrate macro-ring with decreasing water content. The experimental data suggest the existence of different water fractions which are characterized by different molecular mobilities. The dynamic exchange between the fractions depends on the temperature and water content of the samples.

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