磷钼杂多酸-L-半胱氨酸自组装超分子pH敏感膜电位传感器  

Preparation of A pH Sensitive Film Gold Electrode

作　　者：王升富[1] 杜丹[1] 邹其超[1] 

机构地区：[1]湖北大学化学与材料科学学院,武汉430062

出　　处：《应用化学》2002年第3期255-258,共4页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金资助项目 (2 99710 10 );湖北省自然科学基金资助项目 (2 0 0 0 J0 0 7)

摘　　要：采用动电位静电吸附法制备了 Keggin型磷钼杂多酸 -L-半胱氨酸自组装超分子膜修饰金电极(PMo1 2 -L-Cys/ Au膜电极 ) ,探讨了成膜机理 .水平衰减全反射 (ATR) FTIR光谱技术研究表明 ,超分子膜的形成是通过 PMo1 2 O3- 40 阴离子与 L -Cys中的— NH+ 3阳离子之间静电作用实现 .与溶液中 PMo1 2 O3- 40 相比 ,超分子膜能在较宽的 p H范围内稳定存在 ,并对 H+ 有灵敏的电位响应 ,测定了 pA self assembled supermolecular film gold electrode has been fabricated from Keggin type phosphormolybdate anions and L cysteine based on the electrostatic attraction between PMo 12 O 3- 40 and surface NH + 3 of L cysteine. Compared with PMo 12 O 3- 40 , the supermolecular film electrode is effective in a wider pH range and shows a good response to H +. The cyclic voltammetry and (ATR)FTIR techniques were used in the electrochemical characterization. The formation of the films and the pH sensor behavior have been discussed. The major properties of the pH film sensor have been demonstrated .

关 键 词：自组装超分子膜 pH电位传感器 磷钼杂多酸 L-半胱氨酸 动电位静电吸附法 PH电极 化学修饰电极 

分 类 号：TH832.31[机械工程—仪器科学与技术] O657.1[机械工程—精密仪器及机械]