【摘要】 采用vilsmeier甲酰化和羟醛缩合法合成N-己基咔唑衍生物，通过红外光谱、质谱和核磁共振氢谱对化合物结构进行表征确证；采用滴涂法制备N-己基咔唑/r GO/GCE复合电极，通过循环伏安曲线测试和阻抗测试进行表征；采用循环伏安检测Mn²⁺。结果表明HD4/r GO/GCE对Mn²⁺电化学响应较好。在扫描速度50 m V/s、p H=4的优化条件下，Mn²⁺浓度在2～200μmol/L线性关系良好，最低检测限为0.298μmol/L（S/N=3）。选取最优修饰电极用于Mn²⁺标准品测定，加标回收率为98.0%～101.0%。结果表明HD4/r GO/GCE具有良好的稳定性、重复性和抗干扰性。更多还原

【Abstract】 N-hexyl carbazole derivatives were synthesized through vilsmeier formylation and hydroxyl acetylation.The structures of the compounds were characterized by infrared spectroscopy and mass spectrometry.N-hexyl carbazole/r GO/GCE composite electrode was prepared by drip coating method and characterized by cyclic voltammetry curve and impedance test.Cyclic voltammetry was used to detect Mn²⁺.The results showed that HD4/r GO/GCE had the best electrochemical response to Mn²⁺.Under the best experimental conditions of the optimal scanning speed was 50 m V/s and the p H was 4,Mn²⁺concentration showed a good linear relationship between2～200μmol/L and the lowest detection limit was 0.298μmol/L （S/N=3）.The optimal modified electrode was selected for the determination of Mn²⁺standard,and the recoveries were 98.0%～101.0%.The results showed that HD4/r GO/GCE had good stability,repeatability and anti-interference.更多还原