Luminescence properties of a di-ruthenium(II) complex with an intramolecular hydrogen bond modulated by DNA and copper(II) ion

被引：5

作者：

Chen, Pei-Liang ^{[1
]}

Chao, Hui ^{[2
]}

Xu, Juan ^{[1
]}

Wang, Li ^{[1
]}

Li, Hong ^{[1
]}

机构：

[1] S China Normal Univ, Sch Chem & Environm, Key Lab Technol Electrochem Energy Storage & Powe, Guangdong Univ, Guangzhou 510006, Guangdong, Peoples R China

[2] Sun Yat Sen Univ, Dept Chem, Guangzhou 510275, Guangdong, Peoples R China

来源：

TRANSITION METAL CHEMISTRY | 2009年 / 34卷 / 07期

关键词：

MOLECULAR LIGHT SWITCH; RUTHENIUM(II) COMPLEXES; POLYPYRIDYL COMPLEX; BINDING; LIGAND; INTERCALATION; PHOTOCLEAVAGE; SOLVENTS; BEHAVIOR; DUPLEX;

D O I：

10.1007/s11243-009-9261-5

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Modulation of the luminescence properties of a di-ruthenium(II) complex [(bpy)(2)Ru(BL)Ru(bpy)(2)](4+) (bpy = 2,2'-bipyridine, BL = 2-hydroxyl-5-methyl-1,3-bis([1,10]phenanthroline-[5,6-d]imidazol-2-yl)benzene) by DNA and/or Cu2+ ion has been investigated. It is found that the ruthenium(II) complex can coordinate to the Cu2+ ion in both the absence and presence of DNA. Binding to DNA is through electrostatic interactions and the intramolecular hydrogen bond in the complex is located outside of the DNA. The binding constant is 1.6 x 10(4) M-1. Moreover, it is demonstrated that DNA has the ability to enhance the luminescence intensities of both the di-ruthenium(II) complex and the tri-metallic system generated by chelating with Cu2+. Conversely, Cu2+ ion can quench the luminescence of both the free ruthenium(II) complex and the DNA-bound ruthenium(II) complex.

引用

页码：773 / 778

页数：6

共 35 条

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