铕(Ⅲ)-脯氨酸-邻菲罗啉三元配合物的电化学行为研究

Study on the Electrochemical Behavior of Ternary Complex of Eu(Ⅲ) with L-Proline and 1,10-Phenanthroline

本文应用循环伏安法研究了铕 ( ) -脯氨酸 -邻菲罗啉 ([Eu(Pro) 3phen]Cl3· 2 H2 O)三元配合物在玻碳电极上的电化学行为。在 - 0 .4～ - 1.0 V(vs.SCE)电位范围内 ,以 HAc- Na Ac(p H6 )或 Tris- HCl(p H6 ,Tris为三羟甲基氨基甲烷 )缓冲溶液为底液时 ,该配合物出现一对氧化还原峰。但在 HAc- Na Ac(p H 6 )缓冲溶液中 ,随扫描圈数的增加 ,还原峰逐渐负移 ,并且氧化还原峰逐渐消失。而在 Tris- HCl(p H6 )缓冲溶液中 ,从扫描第三圈开始循环伏安曲线就基本稳定。另外 ,还讨论了 O2 对配合物电化学行为的影响。

The electrochemical behavior for ternary complex of Eu(Ⅲ)with L Proline and 1,10 Phenanthroline,being expressed as [Eu(Pro) 3phen]Cl 3·2H 2O,was studied with cyclic voltammetry.In the scan range of -0.4^-1.0V(vs.SCE),the complex showed electrochemical activity in HAc NaAc or Tris HCl(pH6) buffer.Furthermore,the influence of O 2 and background solution were also discussed.