Analysis of Binding Properties Between beta-Cyclodextrin Bipyridine-ruthenium Derivative and Vitamins by Their Fluorescence Spectra

作者：Zheng Shan Shan; Chen Hong; Qi Yan Tao; Wang Xiu Hua; Fan Hua Jun; Zhao Ying Ying; Zhang Fan; Yang Fan; Tang Jie; He Pin Gang^*

来源：Chemical Journal of Chinese Universities, 2013, 34(7): 1606-1611.

DOI：10.7503/cjcu20130077

• beta-Cyclodextrin bipyridine-ruthenium derivative
• Vitamin
• Fluorescence spectra
• Binding interaction

This paper presents a research of the binding interaction of a new synthetized beta-cyclodextrin bipyridine-ruthenium derivative [beta-CD-Ru(bpy)(3)] with a series of vitamins using fluorescent spectrometry. The performance of fluorescence emission of beta-CD-Ru(bpy)(3) was excellent due to the existence of the center of bipyridine-ruthenium. Based on the effect of molecular recognition between p-cyclodextrin and guest molecule, the fluorescence quenching occured because of the energy transfer between the beta-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 beta-CD-Ru(bpy)(3) were in a descending sequence of VB12>VK3>VC>VA.

• 出版日期2013-7-10
• 单位华东师范大学