Interaction of two mononuclear tetracoordinate complexes [Co(dmphen)Br2] and [Co(dmphen)I2] (dmphen = 2,9-dimethyl-1,10-phenanthroline), which have been recently reported to behave as single-molecule magnets (SMMs) in an applied external field, with calf thymus (CT) DNA in solution was studied by spectral methods (UV–Vis, fluorescence, and circular dichroism). Results indicate that both complexes along
两种单核四配位配合物[Co(dmphen)Br 2 ]和[Co(dmphen)I 2 ](dmphen = 2,9-二甲基-1,10-
菲咯啉)的相互作用,最近据报道其表现为单分子通过光谱方法(UV-Vis,荧光和圆二色性)研究了在外加磁场中的牛(
SMM)和小牛胸腺(CT)DNA的溶液。结果表明,两种配合物及其
氯代类似物[Co(dmphen)Cl 2 ]都能通过嵌入与CT DNA结合,线性猝灭图获得的Stern–Volmer常数值为1.86×10 4。 –2.11×10 4 M -1。此外,拓扑异构酶I抑制研究表明,所有三种复合物在浓度为45μM时均表现出抑制活性。