二新奇 mixed-ligand 建筑群,[M (phen )2(ans)2] · H2 O (M = Cd (II ) 1, Zn (II ) 2;phen 是 1, 10-phenanthroline,和 ans 是 4-aminonaphthalene-1-sulfonate ) ,从 1 的反应被获得,在混合溶剂的 10-phenanthroline,钠 4-aminonaphthalene-1-sulfonate tetrahydrate 和醋酸盐。有小牛胸腺 DNA (ctDNA ) 的建筑群的相互作用用紫外力的吸收系列被调查,光滴定,熄灭由的不变的排放[有 ethidium 溴化物(EB ) 的 Fe (CN )6]4−, DNA 竞争绑定和粘性大小。试验性的结果在那里显示那存在在建筑群和 DNA 之间的二个相互作用模式,也就是静电的相互作用和置闰,与 1.82 × 的有约束力的常数为 1 和 4.78 × 的 10 5 M −1在 50 公里 NaCl 和 5 公里 Tris-HCl 的缓冲区的为 2 的 10 4 M −1( pH 7.0 )。
Two novel mixed-ligand complexes, [M(phen)2(ans)2]·H2O (M = Cd(Ⅱ) 1, Zn(Ⅱ) 2; phen is 1, 10-phenanthroline, and ans is 4-aminonaphthalene-1-sulfonate), were obtained from the reaction of 1, 10-phenanthroline, sodium 4-aminonaphthalene-1-sulfonate tetrahydrate and acetate in mixed solvents. Interaction of the complexes with calf thymus DNA (ctDNA) were investigated using UV-vis absorption spectra, luminescence titrations, steady-state emission quenching by [Fe(CN)6]4 , DNA competitive binding with ethidium bromide (EB) and viscosity measurements. The experimental results indicate that there exist two interaction modes between the complexes and DNA, namely the electrostatic interaction and intercalation, with the binding constants of 1.82 × 10^5 M-1 for 1 and 4.78 ×10^4 M^- 1 for 2 in buffer of 50 mM NaCl and 5 mM Tris-HCI (pH 7.0).