通过紫外可见分光光谱法、荧光光谱法、粘度测量法和循环伏安法等分析方法研究了2,6-二(苯并咪唑-2’)吡啶、氨基酸和金属镧(Ⅲ)的配合物与DNA的相互作用。实验结果表明,配合物与DNA作用后,其紫外吸收强度减弱,荧光强度及黏度亦减弱,键合常数为1.1×105 L/mol;循环伏安法中氧化和还原峰的峰电势没有变化,但是氧化还原峰的电流减小。以上所有结果说明配合物与DNA是通过部分插入和静电结合发生作用。 The complexes of 2,6-bis (benzimidazole-2 ’) pyridine, amino acids and lanthanum (Ⅲ) were studied by UV-Vis spectroscopy, fluorescence spectroscopy, viscosity measurement and cyclic voltammetry DNA interaction. The experimental results showed that after the interaction between the complex and DNA, the UV absorption intensity decreased, the fluorescence intensity and viscosity decreased, the bonding constant was 1.1 × 105 L / mol. The peak potential of the oxidation and reduction peak in cyclic voltammetry did not change, However, the redox peak current decreases. All of the above results show that the complexes and DNA act by partial insertion and electrostatic binding.