聚乙撑二氧噻吩导电聚合物上吗啡的电化学检测

在水相中电沉积制备得到了聚乙撑二氧噻吩（PEDOT）导电聚合物膜，研究了沉积电量、沉积电位等因素对聚合物膜的电化学活性及其在水溶液中检测吗啡的电化学响应的影-向．结果表明．沉积电量为20～40mC，沉积电位为1．2V（相对于Ag／AgCl电极）时所得的聚合物膜对吗啡具有最高的电化学响应．在此基础上，研究了PEDOT膜修饰电极在不同浓度的吗啡水溶液中的电化学检测，发现在0．05～6mmol·L^-1浓度范围内具有很好的线性响应．最低检测限为0．05mmol·L^-1，相关系数达0．995．

Electrochemical detection of morphine on poly(3,4-ethylenedioxy-thiophene) thin films

Conducting poly(3,4-ethylenedioxy-thiophene) (PEDOT) thin films were prepared onto ITO glass by electrodepositing from aqueous electrolyte. Factors, e.g. deposition charge and deposition potential, affecting the electrochemical activity of conducting films towards the electrochemical detection of morphine, were evaluated. The conducting films prepared at the optimal preparation parameters, i.e. deposition charges of 20~40 mC (at 0.8 cm2 ITO surface) and deposition potential of 1.2 V (Ag/AgCl), were found to...