基于Nafion/聚（4-苯乙烯磺酸钠）复合膜的固态电化学发光传感器。
Solid-state electrochemiluminescence sensor based on the Nafion/poly(sodium 4-styrene sulfonate) composite film.
作者信息
Zhang Libing, Li Jing, Xu Yuanhong, Zhai Yueming, Li Yunhui, Wang Erkang
机构信息
State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, PR China.
出版信息
Talanta. 2009 Jul 15;79(2):454-9. doi: 10.1016/j.talanta.2009.04.009. Epub 2009 Apr 11.
An effective electrochemiluminescence (ECL) sensor based on Nafion/poly(sodium 4-styrene sulfonate) (PSS) composite film-modified ITO electrode was developed. The Nafion/PSS/Ru composite film was characterized by atomic force microscopy, UV-vis absorbance spectroscopy and electrochemical experiments. The Nafion/PSS composite film could effectively immobilize tris(2,2'-bipyridyl)ruthenium(II) (Ru(bpy)(3)(2+)) via ion-exchange and electrostatic interaction. The ECL behavior of Ru(bpy)(3)(2+) immobilized in Nafion/PSS composite film was investigated using tripropylamine (TPA) as an analyte. The detection limit (S/N=3) for TPA at the Nafion/PSS/Ru composite-modified electrode was estimated to be 3.0 nM, which is 3 orders of magnitude lower than that obtained at the Nafion/Ru modified electrode. The Nafion/PSS/Ru composite film-modified indium tin oxide (ITO) electrode also exhibited good ECL stability. In addition, this kind of immobilization approach was simple, effective, and timesaving.
基于Nafion/聚（苯乙烯磺酸钠）（PSS）复合膜修饰的氧化铟锡（ITO）电极开发了一种有效的电化学发光（ECL）传感器。通过原子力显微镜、紫外可见吸收光谱和电化学实验对Nafion/PSS/Ru复合膜进行了表征。Nafion/PSS复合膜可通过离子交换和静电相互作用有效地固定三（2,2'-联吡啶）钌（II）（Ru(bpy)(3)(2+)）。以三丙胺（TPA）为分析物，研究了固定在Nafion/PSS复合膜中的Ru(bpy)(3)(2+)的ECL行为。Nafion/PSS/Ru复合修饰电极上TPA的检测限（S/N=3）估计为3.0 nM，比Nafion/Ru修饰电极上的检测限低3个数量级。Nafion/PSS/Ru复合膜修饰的氧化铟锡（ITO）电极也表现出良好的ECL稳定性。此外，这种固定方法简单、有效且省时。
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