[Cu(bpy)(Gly)Cl]·2H2O (1) and [Cu(dpa)(Gly)Cl]·2H2O (2) (bpy = 2,2′-bipyridine; dpa = 2,2′-dipyridylamine, Gly = glycine) have been synthesized and characterized by elemental analysis, IR, TGA, UV–vis and magnetic susceptibility measurements. The binding properties of the complexes with CT-DNA were investigated by electronic absorption spectra. The intrinsic binding constants (Kb) calculated from UV–vis absorption
在这项研究中,两个新的络合物[Cu(bpy)(Gly)Cl]·2H 2 O(1)和[Cu(dpa)(Gly)Cl]·2H 2 O(2)(bpy =
2,2'-联吡啶; dpa = 2,2'-dipyridylamine,Gly =甘
氨酸)已经合成并通过元素分析,IR,TGA,UV-vis和磁化率测量进行了表征。通过电子吸收光谱研究了复合物与CT-DNA的结合特性。根据复合物1和2的UV-vis吸收研究计算出的固有结合常数(K b)为1.84×10 3 M -1和3.1×10 3 M -1分别。已通过分光光度法对热变性进行了系统研究,计算出的每种复合物的ΔT m均接近5°C。所有结果表明,复合物与CT-DNA之间的相互作用模式是静电和/或凹槽结合。通过循环伏安法研究了两种配合物的氧化还原行为。在存在和不存在CT-DNA的情况下,两种复合物均显示出与Cu II / Cu I氧化还原对相对应的准可逆波。在改变ë