Receptor properties of nanoporous structures based on β-cyclodextrin

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Abstract
A columnar modification of β-cyclodextrin (β-CDcol) has been synthesized using self-assembly and self-organization processes. It is shown that the obtained macrocycle assemblies in the solid state are highly ordered structures with through cylindrical pores with an average diameter of ∼0.7 nm and a length of about 60 nm. These structures can be of interest as a new type of macroreceptors for the inclusion of molecules with diameters not exceeding 0.7 nm belonging to various chemical classes. The abilities of the common cage structure of β-CD and the β-CDcol modification to bind low-molecular-weight volatile organic compounds have been compared. The dependence of the composition, structure, and thermal stability of the inclusion complexes on the ligand nature and geometry is analyzed. The absence of any specificity in the adsorption of ligands on β-CDcol and the possibility of using this structure as a stable nanocontainter for the storage of volatile compounds is demonstrated.

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