Electrochemiluminescent dinuclear Ru(II) complexes assembled with 1,1′-(1,2-ethynediyl)- or dimethlyene-bridged bis(bipyridine) ligands: Synthesis and photophysical and electrochemical properties

被引：8
|
作者：
Kim, Minki [1 ]
Kang, Chang Hoon [2 ,3 ]
Hong, Subong [1 ]
Lee, Won-Yong [2 ,3 ]
Kim, Byeong Hyo [1 ]
机构：
[1] Kwangwoon Univ, Dept Chem, Seoul 139701, South Korea
[2] Yonsei Univ, Dept Chem, Seoul 120749, South Korea
[3] Yonsei Univ, Ctr Bioact Mol Hybrids, Seoul 120749, South Korea
来源：
INORGANICA CHIMICA ACTA | 2013年 / 395卷
基金：
新加坡国家研究基金会;
关键词：
Electrochemiluminescence; Dinuclear ruthenium complexes; Bridging ligands; ELECTROGENERATED CHEMILUMINESCENCE; RUTHENIUM; PROTEIN; LABELS; ECL;
D O I：
10.1016/j.ica.2012.10.028
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
1,2-Di(2,2'-bipyridin-5-yl) ethane (BL1) and 1,2-di(2,2'-bipyridin-5-yl)ethyne (BL2) were synthesized as new bridging ligands and coordinated to (RuL2(acetone)(2))(PF6)(2) for the preparation of various [Ru(L)(2) (BL) Ru(L)(2)](PF6)(4)-type dinuclear ruthenium complexes (where BL = BL1, BL2 and L = bpy, o-phen, DTDP). The electrochemical redox potentials, spectroscopic properties, and relative electrochemiluminescence intensity of BL1 and BL2 were characterized and compared to those of well-known tris(1,10-phenanthroline) rutheniun(II) [Ru(o-phen)(3)](PF6)(2)] complex as a reference. Dinuclear Ru(II) complexes containing the conjugated bridging ligand (BL2) showed much more intense electrochemiluminescent responses than dinuclear Ru(II) complexes with the non-conjugated bridging ligand (BL1). Among the complexes with conjugated bridging ligands, [(DTDP)(2)Ru(bpy-CC-bpy)Ru(DTDP)(2)](PF6)(4) exhibited enhanced ECL intensities as high as 3.6 times greater than that of the reference, [Ru(o-phen)(3)](PF6)(2). (C)2012 Elsevier B. V. All rights reserved.
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页码：145 / 150
页数：6
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