四氮杂大环镍配合物催化的BR振荡体系的新应用:检测咖啡酸  

New application of Briggs-Rauscher oscillating system catalyzed by macrocyclic nickel complexes:detection of caffeic acid

作　　者：陈娟[1] 胡刚[1] 张宇[1] 宋继梅[1] 沈效峰[1] 胡林[2] 

机构地区：[1]安徽大学化学化工学院,安徽合肥230601 [2]华东交通大学应用化学研究所,江西南昌330013

出　　处：《阜阳师范学院学报（自然科学版）》2016年第1期31-36,共6页Journal of Fuyang Normal University(Natural Science)

基　　金：国家自然科学基金项目(21171002;21401024)资助

摘　　要：设计了一种新型检测咖啡酸的方法。利用不浓度的咖啡酸加入四氮杂大环镍配合物催化的Briggs-Rauscher(BR)化学振荡体系(KIO_3-[Ni L](Cl O_4)_2-H_2SO_4-H_2O_2-丙二酸)中,化学振荡体系受到不同的扰动从而达到定量分析咖啡酸的效果。[Ni L](Cl O_4)_2中的配体L为5,7,7,12,14,14-六甲基-1,4,8,11-四氮杂环-4,11,-二烯。研究发现,当咖啡酸浓度在1.5×10^(-6)~2.0×10^(-5)M之间变化时,抑制时间与加入体系的咖啡酸浓度呈现一定浓度的线性关系。在尝试用循环伏安和原有的FCA模型的基础上,提出可能的反应机理。This paper reported a new method to determine caffeic acid in this paper. When the caffeic acid was injected into the new BR oscillating system, the perturbation effects of caffeic acid were examined. The ligand L in the complex [Ni L]（Cl O4）2is 5,7,7,12,14,14-hexamethyl-1,4,8,11-tetraazacyclotetradeca4,11-diene. We define the inhibition time as a parameter to discuss the influence. As a result, when the concentration of caffeic acid is during 1.5×10（-6）-2.0×10（-5）M, there is a linear relationship between the concentration of caffeic acid and the inhibition time. In order to find the optimum condition, the control variable method was used. And through the method of cyclic voltammetry, we can explore the perturbation mechanism about the system.

关 键 词：Briggs-Rauscher 化学振荡 四氮杂大环 镍配合物 咖啡酸 

分 类 号：O65[理学—分析化学]