水溶性含氮杯芳烃电化学行为

摘要

The calix [4 ] arene Mannich base was synthesized and characterized by nuclear magnetic resonance.The electrochemical behavior of compound a1(An acidic salt of the calix[4]arene Mannich base(dimethylamine))and compound b1(An acidic salt of calix[4]arene Mannich base(diethylamine))was studied by cyclic voltammetry,single potential step time current method,time keeping method and conventional pulse polarography(voltammetry)with CH3COOH—CH3COONa as buffer solution.The result shows that there is an irreversible oxidation peak in a scan potential of-0.5 V to 1.5 V.The oxidation peak potentials are 0.92 V and 0.89 V respectively.The peak current and peak potential of the oxidation peak are linear with the scanning rate.The formation of oxidation peak is controlled by diffusion.The activation energy of the reaction is 11.62 kJ/mol and 13.35 kJ/mol respectively.%合成了杯[4]芳烃曼尼希碱,并使用核磁共振方法对其进行表征分析.以 CH3COOH—CH3COONa为缓冲溶液,利用循环伏安法、单电位阶跃计时电流法、计时电量法、常规脉冲极谱(伏安法)研究化合物 a1(杯[4]芳烃曼尼希碱(二甲胺)的酸性盐)和化合物 b1(杯[4]芳烃曼尼希碱(二乙胺)的酸性盐)的电化学行为.结果表明,当扫描电位在-0.5～1.5 V 时,有一个不可逆氧化峰,产物 a1的氧化峰电位为 0.92 V,产物 b1的氧化峰电位为 0.89 V,氧化峰电流及峰电位均与扫描速率呈线性关系,氧化峰的形成受扩散控制影响.反应活化能分别为 11.62 kJ/mol和 1 3.3 5 kJ/mol.