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The complexes of β-cyclodextrin (β-CD) with dibenzofuran-2-carboxylic acid (DBFCA) have been studied by infrared spectroscopy in solid phase. Digital subtraction, deconvolution and curve fitting have been used to elucidate the nature of the interaction between DBFCA and β-CD. Remarkable changes in the carbonyl band have been detected and explained in terms of the differences in the degree of association...
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