Supramolecular Chemistry p. 644 - 653 (2011)
Update date:2022-08-10
Topics:
Chao, Jianbin
Su, Jian
Li, Jinxia
Zhao, Wei
Huang, Shuping
Du, Rui
The formation of the complexes of baicalein (Ba) with β-cyclodextrin (β-CD) and β-CD derivatives (HP-β-CD and Me-β- CD) was studied by UV-vis absorption spectroscopy, fluorescence method, nuclear magnetic resonance spectroscopy and phase-solubility measurement. The solid-inclusion complexes of Ba with CDs were synthesised by the co-precipitation method. The characterisations of the solid-inclusion complexes have been proved by infrared spectra and differential scanning calorimetry. Experimental conditions including the concentration of various CDs and media acidity were investigated in detail. The results suggested that the inclusion ratio of HP-β-CD with Ba was the highest among the three kinds of CDs. The binding constants (Ks) of the inclusion complexes were determined by fluorescence method and phasesolubility measurement. Kinetic studies of DPPHz with Ba and CDs complexes were also done. The results indicated that the Ba/HP-β-CD complex was the most reactive form.
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