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首页> 外文期刊>Chemistry: A European journal >Blue Electrogenerated Chemiluminescence from Water-Soluble Iridium Complexes Containing Sulfonated Phenylpyridine or Tetraethylene Glycol Derivatized Triazolylpyridine Ligands
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Blue Electrogenerated Chemiluminescence from Water-Soluble Iridium Complexes Containing Sulfonated Phenylpyridine or Tetraethylene Glycol Derivatized Triazolylpyridine Ligands

机译：水溶性磺酸铱配合物的磺化苯并吡啶或四乙二醇衍生的三唑基吡啶配体的蓝色电化学发光

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摘要

Incorporating phenylpyridine-and triazolylpyridine- based ligands decorated with methylsulfonate or tetraethylene glycol (TEG) groups, a series of iridium(III) complexes has been created for green and blue electrogenerated chemiluminescence under analytically useful aqueous conditions, with tri-n-propylamine as a coreactant. The relative electrochemiluminescence (ECL) intensities of the complexes were dependent on the sensitivity of the photodetector over the wavelength range and the pulse time of the applied electrochemical potential. In terms of the integrated area of corrected ECL spectra, with a pulse time of 0.5 s, the intensities of the Ir-III complexes were between 18 and 102% that of [Ru(bpy)(3)](2+) (bpy= 2,2'-bipyridine). However, when the intensities were measured with a typical bialkali photomultiplier tube, the signal of the most effective blue emitter, [Ir(df-ppy)(2)(pt-TEG)](+) (df-ppy= 2-(2,4-difluorophenyl) pyridine anion, pt-TEG= 1-(2-(2-(2-(2-hydroxyethoxy) ethoxy)ethoxy)-ethyl)- 4-(2-pyridyl)-1,2,3-triazole), was over 1200% that of the orange-red emitter [Ru(bpy)(3)](2+). A combined experimental and theoretical investigation of the electrochemical and spectroscopic properties of the IrIII complexes indicated that the greater intensity from [Ir(df-ppy)(2)(pt-TEG)](+) relative to those of the other IrIII complexes resulted from a combination of many factors, rather than being significantly favored in one area.
机译：结合了用甲基磺酸盐或四甘醇（TEG）基团修饰的苯基吡啶和三唑基吡啶基配体，已创建了一系列铱（III）配合物，用于在分析有用的水性条件下以绿色和蓝色电化学发光，并以三正丙胺为共反应剂。配合物的相对电化学发光（ECL）强度取决于光电探测器在波长范围内的灵敏度和所施加电化学势的脉冲时间。就校正后的ECL光谱的积分面积而言，脉冲时间为0.5 s，Ir-III配合物的强度介于[Ru（bpy）（3）]（2+）（bpy = 2,2'-联吡啶）。但是，当使用典型的双碱式光电倍增管测量强度时，最有效的蓝色发射器的信号[Ir（df-ppy）（2）（pt-TEG）]（+）（df-ppy = 2-（ 2,4-二氟苯基）吡啶阴离子，pt-TEG = 1-（2-（2-（2-（2-（2-羟基乙氧基）乙氧基）乙氧基）-乙基）-4-（2-吡啶基）-1,2,3 -三唑），是橙红色发射体[Ru（bpy）（3）]（2+）的1200％以上。 IrIII配合物的电化学和光谱性质的组合实验和理论研究表明，[Ir（df-ppy）（2）（pt-TEG）]（+）相对于其他IrIII配合物具有更大的强度来自多种因素的综合考虑，而不是在某个领域受到广泛青睐。

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