An accurate structural characterization of polysaccharide-based systems is crucial in understanding the properties of the materials. Among all the characterization techniques, solid-state NMR spectroscopy proves to be fundamental for a clear picture of complex polysaccharide-based systems. An example of complexity in these systems is represented by disordered structures. Polysaccharides with large fractions of amorphous regions can be analyzed using a 1H-13C cross-polarization (CP) magic-angle-spinning (MAS) to resolve their molecular sites. Solid-state NMR is also effective in the structural characterization of porous materials. Some polysaccharides, such as chitin, self-assemble in mesoporous architectures directly in nature, while for others, such as cellulose, reduction to a nanocrystalline form is required to obtain these types of networks. In this presentation, I will discuss our use of solid-state NMR techniques to probe the structures of new materials developed from biopolymers. This technique gives insight into the structure of the materials in a way that is not available from other analytical methods.

Solid-state NMR as a powerful tool to characterize polysaccharide-based systems

ACS Spring Meeting 2021

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