Studies on the Synthesis , Characterization and Interaction mode with DNA of the complexes of Europium(III) and Taurine Schiff base

Chinese Journal of Applied Chemistry ›› 2009, Vol. 26 ›› Issue (08): 913-917.

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Studies on the Synthesis , Characterization and Interaction mode with DNA of the complexes of Europium(III) and Taurine Schiff base

YANG Li-Rong1*, SHAO Cai-Yun1, BI Cai-Feng2, FAN Yu-Hua2

(1.Institute of Molecule and Crystal Engineering，College of Chemistry
and Chemical Engineering,Kaifeng 475004;
2.College of Chemistry and Chemical Engineering,Ocean University of China,Qingdao)

Received:2008-07-07 Revised:2008-11-27 Published:2009-08-10 Online:2009-08-10

Abstract

Abstract:

Abstract Three Europium(III) complexes with Taurine-salicylaldehyde Schiff base ([(Eu(TSal)L(NO3)]•2H2O, TSal :Taurine-salicylaldehyde Schiff base, L1:1,10-phenanthroline, L2: 2-aminopyrimidine, L3: 2,2’-bipyridine)have been synthesized and characterized. The interaction mode between the complexes and calf thymus DNA has been investigated by fluorescence spectroscopy and viscosity measurement. The results show that all the complexes can remarkably quench the emission intensity of EB-DNA system. With increasing concentration of the complexes, their ability of binding to DNA is more prominent under the experimental conditions. All experimental results indicate that the interaction of the complexes with calf thymus DNA is intercalation mode. The sequence of intercalation ability of the complexes is [Eu(TSal)L1(NO3)]•2H2O＞[Eu (TSal)L3(NO3)] •2H2O＞[Eu(TSal) L2(NO3)]• 2H2O.

Key words: Taurine Schiff base, DNA, Fluorescence spectroscopy, Interaction mode, Europium(III) complexes

CLC Number:

O611.6

YANG Li-Rong1*, SHAO Cai-Yun1, BI Cai-Feng2, FAN Yu-Hua2. Studies on the Synthesis , Characterization and Interaction mode with DNA of the complexes of Europium(III) and Taurine Schiff base[J]. Chinese Journal of Applied Chemistry, 2009, 26(08): 913-917.

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Studies on the Synthesis , Characterization and Interaction mode with DNA of the complexes of Europium(III) and Taurine Schiff base

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