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聚 ( 2 ,5 -二甲氧基苯胺 )含有对称的环取代基 ,其电化学活性可与 PAni相比拟 .该聚合物具有三种氧化态 ,即完全还原态 ( L)、半氧化态 ( E)和完全氧化态 ( P) ,在伏安曲线上分别于 0 .1 9和 0 .5 1 V处出现 L/E和 E/P转变峰 .掺杂态聚合物和本征态聚合物的氧化还原分别经历 L EH P和 LH EH P路径 ,其中 E/P转变峰电位随 p H升高而发生负移 .铂化的聚合物电极对异丙醇的氧化具有明显的催化作用 ,且随着扫描时间延长 ,氧化电流逐渐提高 ;聚合物与铂微粒相互作用 ,改变铂微粒的几何结构和电子性质 ,使催化体系具有良好的催化活性和抗中毒能力 .在 p H=4.7的缓冲溶液中 ,该修饰电极对异丙醇氧化仍具有催化活性 .聚合物在空气中存放太久 ( 3年 )会发生降解 ,从而影响其电化学性质 .
Poly (2, 5 - dimethoxyaniline) contains symmetrical ring substituents and its electrochemical activity is comparable to that of PAni, which has three oxidation states: fully reduced state (L), semi - E) and complete oxidation state (P), L / E and E / P transition peaks appear on the voltammetry at 0 .19 and 0 .5 1 V, respectively. The doping polymer and the eigen-state polymer Redox undergoes L EH P and LH EH P pathways, respectively, and the peak potential of E / P transition negatively shifts with the increase of p H. The platinum polymer electrode has a significant catalytic effect on isopropanol oxidation and As the scanning time prolongs, the oxidation current gradually increases; the interaction between polymer and platinum particles changes the geometry and electronic properties of the platinum particles, making the catalytic system has good catalytic activity and anti-poisoning ability. In a buffer solution with pH = 4.7, , The modified electrode still has catalytic activity for isopropanol oxidation.The polymer will degrade in air for too long (3 years), thus affecting its electrochemical properties.