Chem. J. Chinese Universities ›› 2013, Vol. 34 ›› Issue (7): 1606.doi: 10.7503/cjcu20130077

• Analytical Chemistry • Previous Articles     Next Articles

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

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   

  1. Department of Chemistry, East China Normal University, Shanghai 200062, China
  • Received:2013-01-22 Online:2013-07-10 Published:2013-06-21
  • Contact: Pingang E-mail:pghe@chem.ecnu.edu.cn

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 VB12>VK3>VC>VA.

Key words: β-Cyclodextrin bipyridine-ruthenium derivative, Vitamin, Fluorescence spectra, Binding interaction

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