FORMATION OF SUPRAMOLECULAR STRUCTURES IN THE β-CYCLODEXTRIN- β-RESORCYLIC ACID SYSTEM

It was found with the help of spectrophotometry, IR spectroscopy, X-ray phase analysis, and thermogravimetry, that new supramolecular structures in the β-cyclodextrin-β-resorcylic acid system are generated as a result of the spontaneous exothermic process. It was proved that the inclusion complexes of the host-guest type with 1:1 ratio between β-cyclodextrin and molecular form of β-resorcylic acid (or its monovalent anion) are formed through the van der Waals interactions of the aromatic ring of β-resorcylic acid with the inner hydrophobic cavity of β-cyclodextrin. It was shown that there are the partial displacement of water molecules from the inner cavity of the cyclic oligosaccharide and the complete immersion of β-resorcylic acid molecule inside it; the thermal stability of β-resorcylic acid increases.

β-циклодекстрин, β-резорциловая кислота, супрамолекулярные структуры, комплексы включения, УФ и ИК спектроскопия, рентгенофазовый анализ, термогравиметрия, β-cyclodextrin, β-resorcylic acid, supramolecular structures, inclusion complexes, UV-IR spectroscopy, X-ray phase analysis, thermogravimetry

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