Electrochemiluminescence studies of phosphine chelated osmium(II) complexes

被引：14

作者：

Angulo, Gonzalo ^{[1
]}

Kapturkiewicz, Andrzej ^{[1
,2
]}

Chang, Sheng-Yuan ^{[3
]}

Chi, Yun ^{[3
]}

机构：

[1] Polish Acad Sci, Inst Phys Chem, PL-01224 Warsaw, Poland

[2] Univ Podlasie, Inst Chem, PL-08110 Siedlce, Poland

[3] Natl Tsing Hua Univ, Dept Chem, Hsinchu 30013, Taiwan

来源：

INORGANIC CHEMISTRY COMMUNICATIONS | 2009年 / 12卷 / 05期

关键词：

Osmium(II) complexes; Chelating phosphine ligands; N-donors; Electrochemiluminescence; CYCLOMETALATED IRIDIUM(III) COMPLEXES; ELECTROGENERATED CHEMI-LUMINESCENCE;

D O I：

10.1016/j.inoche.2009.02.021

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The electrochemiluminescence (ECL) properties of five different yellow/orange emissive osmium(II) complexes of general formula Os(L2L') with three different kinds of bidentate phosphine ligands L' have been studied in acetonitrile/dioxane 1:1 solution by means of the triple-potential-step technique. The investigated complexes contain either two substituted pyrazolate or triazolate ligands L. The obtained ECL results have been interpreted in terms of the ligands nature, showing that the efficiency of ECL seems to be sensitive to the pi-acidity of the phosphine ligand. To the authors' best knowledge, the reported ECL efficiencies are the highest found for Os(II) complexes under similar conditions to date, that are at maximum five times higher than that of the famous Ru(bipy)(3)(2+) based ECL systems. (c) 2009 Elsevier B.V. All rights reserved.

引用

页码：378 / 381

页数：4

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