化学氧化合成聚(苯胺-鲁米诺)复合纳米线的电化学发光特性研究  

Electrochemiluminescence Performance of Poly( aniline-luminol)Composite Nanowires Synthesized by Chemical Oxidation

作　　者：王艳杰[1] 李桂新[1] 郑行望[2] 

机构地区：[1]新疆师范大学化学化工学院污染监测与控制重点实验室,乌鲁木齐830054 [2]陕西师范大学化学化工学院,西安710062 Xinjiang Normal Univ, Sch Chem & Chem Engn, Lab Pollut Monitoring & Control, Urumqi 830054, Peoples R China; Shaanxi Normal Univ, Sch Chem & Chem Engn, Xian 710062, Peoples R China

出　　处：《分析化学》2015年第1期141-145,共5页Chinese Journal of Analytical Chemistry

基　　金：国家自然科学基金青年基金(No.21105086);新疆师范大学博士启动基金(No.XJNUBS1208)项目资助~~

摘　　要：以过硫酸铵为氧化剂,通过氧化苯胺和鲁米诺混合溶液合成了聚（苯胺-鲁米诺）复合纳米线。相对于鲁米诺425 nm处的最大荧光发射波长,复合纳米线中聚鲁米诺的最大荧光发射波长明显红移到465 nm处。采用简单的滴凃方式将聚（苯胺-鲁米诺）复合纳米线修饰于石墨电极表面,形成一层稳定的聚（苯胺-鲁米诺）复合纳米线膜。此聚（苯胺-鲁米诺）纳米线膜修饰电极呈现出良好的电化学发光特性,H2O2对化学合成的聚（苯胺-鲁米诺）纳米线电化学发光呈现出增敏效应。在优化实验条件下,修饰电极的电化学发光信号与H2O2在5.0×10^-9～1.0×10^-5mol/L范围内呈线性关系,检出限为2×10^-9mol/L。Poly （aniline-luminol） composite nanowires were synthesized by chemical oxidation using ammonium peroxydisulfate. In contrast to the maximum fluorescence emitting wavelength of luminol at 425 nm, the maximum fluorescence emitting wavelength of the polymeric luminol in the composite nanowires was red shifted to 465 nm obviously. The poly （aniline-luminol） composite nanowires were modified on graphite electrode surface by drop coating, forming a stable poly （aniline-luminol） composite nanowires film. The composite nanowires film modified electrode presented favorable electrochemiluminescence （ECL） performances, and the ECL response could be enhanced by hydrogen peroxide. Under the optimized experimental conditions, the modified electrode provided a linear range of 5.0×10^-9-1.0×10^-5 mol/L for the detection of hydrogen peroxide with a detection limit of 2×10^-9 mol/L.

关 键 词：过硫酸铵 聚(苯胺-鲁米诺)复合纳米线 电化学发光 过氧化氢 

分 类 号：O646.54[理学—物理化学]