Abstract
This paper presents a research of the binding interaction of a new synthetized β-cyclodextrin bipyridine-ruthenium derivative[β-CD-Ru(bpy)3] with a series of vitamins using fluorescent spectrometry.The performance of fluorescence emission of β-CD-Ru(bpy)3 was excellent due to the existence of the center of bipyridine-ruthenium.Based on the effect of molecular recognition between β-cyclodextrin and guest molecule,the fluorescence quenching occured because of the energy transfer between the β-CD-Ru(bpy)3 and the vitamin when a kind of vitamin was added.According to the quantitative value of fluorescence quenching,the binding constants of the new derivative with respect to various vitamins were determined by Benesi-Hildebrand Equation.The results show that the binding capacities of the vitamins with β-CD-Ru(bpy)3 were in a descending sequence of VB12VK3VCVA.
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