A STUDY ON THE INCLUSION BEHAVIOR OF COUMARIN DERIVATIVES IN β-CYCLODEXTRIN

doi:10.7517/j.issn.1674-0475.2000.01.67

Abstract

Abstract: The spectral behaviors of a series of coumarins in water with different concentrations of β-cyclodextrin were studied in this work. It has been found that β-cyclodextrin’s inclusion capacity to these coumarins is closely related to their structural and substitution features. The influence of the polarity of the internal cavity of β-cyclodextrin on coumarins’ spectra corresponds with the degree of coumarins’ intramolecular charge transfer. The formation of hydrogen bonds between -OH,-NH₂ substituted coumarin derivatives and β-cyclodextrin acts as an obstacle to inclusion. Because the size of β-cyclodextrin is definite, it is of great importance for good inclusion to take place that the size of the guest molecule match that of β-cyclodextrin.

Key words: coumarin, β-cyclodextrin, adamantane acid, inclusion complex

DAI Zhaohua, WU Shikang. A STUDY ON THE INCLUSION BEHAVIOR OF COUMARIN DERIVATIVES IN β-CYCLODEXTRIN[J]. Imaging Science and Photochemistry, 2000, 18(1): 67-72.

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