| [Ru(bpy)2tpphz]2+与Zn2+形成的双核配合物的荧光性质研究 | |
| Studies on the Luminescence Properties of Heterobimetallic Complex Formed by [Ru(bpy)2tpphz]2+ and Zn2+ | |
| 摘要: | |
| 关键词: 多吡啶钌配合物 DNA Zn2+ 分子光开关 | |
| 基金项目: | |
| Abstract: The formation of heterobimetallic ruthenium(Ⅱ) complex was investigated by absorption and emission spectra. As an intercalator of DNA， the luminescent monometallic ruthenium(Ⅱ) complex [Ru(bpy)2tpphz]2+ could coor-dinate with Zn2+ to form the nonluminescent heterobimetallic complex [Ru(bpy)2(tpphz)Zn]4+. The emission in-tensity of complex decreased as increasing the amounts of Zn2+ and the luminescence was almost lost at the ratio of [Zn]/[Ru] of 1. After binding to DNA， the peripheral coordination site on the tpphz ligand remained accessible for Zn2+， the coordination occurred from the oppsite side of helix with respect to intercalated [Ru(bpy)2tpphz]2+ and the nonluminescent heterobimetallic complex was formed. On the other hand， the [Ru(bpy)2(tpphz)Zn]4+ also bound to DNA by intercalation and situated the region of the intercalated [Ru(bpy)2tpphz]2+ between the base pairs of DNA. The complex looked like a molecular nut (the Zn2+) and bolt (the [Ru(bpy)2tpphz]2+). | |
| Keywords: polypyridyl ruthenium complex DNA Zn2+ molecular light switch | |
| 摘要点击次数: 1899 | |
| 全文下载次数: 1498 | |
| 张黔玲,刘剑洪,徐宏,任祥忠,魏波,黄毅,张培新,刘建忠,计亮年.[Ru(bpy)2tpphz]2+与Zn2+形成的双核配合物的荧光性质研究[J].无机化学学报,2003,19(6):660-664. | |
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