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聚合物膜具有电催化、电传导、络合富集和选择性分离等性能,其化学响应很快。聚合物膜修饰电极寿命较长,制备方便,在分析测定中,有广泛的用途。因此,近年来,已成为化学修饰电极发展的主要方向。聚合物修饰电极的制备方法有氧化还原沉积,有机硅烷缩合,等离子体聚合,电化学聚合,浸涂、旋转涂层,溶剂挥发和蒸着等。通常,可根据单聚体和聚合物的性质不同,采用适当的聚合方法。某些单聚体,如含氨基和羟基的芳香化合物、杂环化合物,多芳香环的多碳氢化合物,含乙烯基的化合物等,可通过电解的方法聚合(见表)。电解的方式有电位扫描、恒电位电解、恒电流电解、矩形波电解和交流电解法等。
Polymer membranes have the properties of electrocatalysis, electrical conductivity, complex enrichment and selective separation, and their chemical reactions are fast. Polymer membrane modified electrode longer life, easy preparation, in the analysis of determination, has a wide range of uses. Therefore, in recent years, has become the main direction of the development of chemically modified electrodes. Polymer modified electrode preparation methods are redox deposition, organosilane condensation, plasma polymerization, electrochemical polymerization, dip coating, spin coating, solvent evaporation and steaming. In general, a suitable polymerization method may be employed depending on the nature of the monomer and the polymer. Certain mono-polymers, such as amino- and hydroxyl-containing aromatic compounds, heterocyclic compounds, polyaromatic ring-containing polyhydrocarbons, vinyl-containing compounds and the like, can be polymerized by electrolysis (see table). Electrolysis potential scanning, potentiostatic electrolysis, galvanostatic electrolysis, rectangular wave electrolysis and AC electrolysis.