A novel DNA light switch [Ru(bpy)2pzip]2+ activated by cobalt(II) ion |
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| Authors: | Xue-Wen Liu Ji-Ling Lu Yuan-Dao Chen Lin Li Da-Shun Zhang |
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| Affiliation: | 1. College of Chemistry and Chemical Engineering, Hunan University of Arts and Science, ChangDe 415000, PR China;2. Key Lab of Environment-Friendly Chemistry and Application in Ministry of Education, Xiangtan University, Xiangtan 411105, PR China |
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| Abstract: | A novel ruthenium(II) complex, [Ru(bpy)2pzip]2+ has been synthesized and characterized. The DNA-binding properties of this complex have been studied by spectroscopic and viscosity measurements. The results indicated that the complex [Ru(bpy)2pzip]2+ bound to double-stranded DNA in an intercalation mode. In the presence of Co2+, the emission of DNA–[Ru(bpy)2pzip]2+ can be quenched. And when EDTA was added, the emission was recovered. The experiment results show that [Ru(bpy)2pzip]2+ exhibited the “on–off–on” properties of molecular “light switch”. |
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