Synthesis and properties of electrochemiluminescent dinuclear Ru(II) complexes assembled with ester-bridged bis(bipyridine) ligands

被引：9
|
作者：
Kim, Eun Hwa [2 ]
Hong, Subong [2 ]
Lee, Joong Min [1 ,3 ]
Lee, Do Nam [2 ]
Jun, Young Moo [2 ]
Lee, Won-Yong [1 ,3 ]
Kim, Byeong Hyo [2 ]
机构：
[1] Yonsei Univ, Dept Chem, Seoul 120749, South Korea
[2] Kwangwoon Univ, Dept Chem, Seoul 139701, South Korea
[3] Yonsei Univ, Ctr Bioact Mol Hybrids, Seoul 120749, South Korea
来源：
INORGANICA CHIMICA ACTA | 2009年 / 362卷 / 05期
关键词：
Electrochemiluminescence; Dinuclear ruthenium complexes; Bridging ligands; ELECTROGENERATED CHEMILUMINESCENCE; METAL-COMPLEXES; ELECTROCHEMICAL PROPERTIES; RUTHENIUM(II) COMPLEXES; DENDRIMERS; TRIS(2,2'-BIPYRIDINE)RUTHENIUM(II); PROTEIN; LABELS; UNITS; ECL;
D O I：
10.1016/j.ica.2008.08.002
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
New bridging ligands, such as bpy-(COOCH2)-bpy (BL1), mbpy-(CH2)(3)COOCH2-bpy (BL2), bpy-COO (CH2)(6)OOC-bpy (BL3), and bpy-COOCH2PhPhCH2OOC-bpy (BL4), have been synthesized and coordinated to [RuL2(acetone)(2)](PF6)(2) for various [Ru(L)(2)(BL)Ru(L)(2)](PF6)(4)-type dinuclear ruthenium complexes (where BL = BL1, BL2, BL3, BL4, and L = bpy, o-phen, DTDP). Their electrochemical redox potentials, spectroscopic properties and relative electrochemiluminescence were investigated in detail. All dinuclear Ru complexes exhibit MLCT (metal-to-ligand charge transfer) absorption and luminescence bands in the visible region. ECL intensities of dinuclear ruthenium(II) complexes were affected not only by the kind of the ligand, but also by the nature of the bridging ligand. Among the synthesized dinuclear Ru complexes, [(DTDP)(2)Ru(mbpy)-(CH2)(3)COOCH2-(bpy) Ru(DTDP)(2)](PF6)(4) exhibited enhanced ECL intensities as high as 2.9 times greater than that of the reference, [Ru(o-phen)(3)](PF6)(2) . (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：1577 / 1584
页数：8
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