基于铜(Ⅱ)席夫碱配合物为中性载体的高选择性水杨酸根传感器的研究  

Studies on highly selective salicylate sensor based on a schiff base complex of copper(Ⅱ)as a neutral ionophore

作　　者：张敏[1] 冉小琪[1] 袁若[1] 张云[1] 柴雅琴[1] 吴峡[1] 

机构地区：[1]西南大学化学化工学院,重庆市现代分析重点实验室,重庆400715

出　　处：《化学传感器》2007年第3期40-44,共5页Chemical Sensors

基　　金：国家自然科学基金(20675064);重庆市自然科学基金(CSTC-2005BB4100)资助

摘　　要：该文合成了双水杨醛缩4,4'-二氨二苯甲烷铜(Ⅱ)金属有机配合物,并以此配合物为中性载体,制得PVC膜离子选择性电极。该电极在pH值为4.0～8.5范围内对水杨酸根离子有较好的Nernst响应,且呈现反Hofmeister序列行为。电极具有良好的选择性、稳定性和重现性,其线性范围为2.7×10-5～1.0×10-1mol/L。通过UV-Vis、交流阻抗技术分析了电极响应机理,将该电极初步应用于药品分析中,其测定结果与经典滴定法测定结果基本一致。An organometallic compound that copper(Ⅱ)4,4'-bis(salicylideneimino)diphenylmethane is synthesized as a neutral ionophore for the preparation of polyvinyl chloride(PVC)membrane electrode.The electrode has excellent Nernst potential response in 4.0～8.5 pH range with an anti-Hofmeister selectivity pattern.In addition,the potentiometric selectivity,stability and reproducibility are investigated,its linear response range is 2.7×10-5 ～1.0×10-1 mol/L.The response mechanism to the electrodes is described based on UV-visible absorption spectra and AC impedance technology.The electrode can be primary applied to analyses of medicine and the results obtained are in fair agreement with the results given by a titrimetry method.

关 键 词：铜(Ⅱ)席夫碱配合物 离子选择性电极 水杨酸根 

分 类 号：TP212.2[自动化与计算机技术—检测技术与自动化装置]