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报道了各种天然α-氨基酸水溶液中电化学聚合吡咯获得氨基酸掺杂的聚吡咯.实验表明吡咯在酸性氨基酸电解质中的氧化聚合电位较低,速度较快;而在碱性氨基酸水溶液中几乎无法进行电化学聚合.在电化学聚合过程中,氨基酸既作为支持电解质,又作为对离子被掺杂到聚合物中.该聚吡咯的电导率被测定为0.3～1.0 S/cm,在酸性氨基酸溶液中得到的聚合物电导率明显高于酸性较弱的氨基酸溶液中得到的聚合物,同时聚合物还具有良好的电化学活性和电化学稳定性,在-0.5 V到+0.5 V区间有一对氧化还原峰,该氧化还原峰的形状和特性在100次循环后基本保持不变.通过扫描电镜和透射电镜照片可以看出,不同种氨基酸的掺杂对聚吡咯的形貌具有影响,由于氨基酸的软模板效应,在数种氨基酸水溶液中能制得具有纳米纤维结构的聚吡咯.
Reported that a variety of natural α-amino acid aqueous solution of electrochemical pyrrole to obtain amino acid-doped polypyrrole. Experiments show that pyrrole in the acidic amino acid electrolyte oxidation polymerization potential is lower, faster; almost impossible in the basic amino acid aqueous solution In the electrochemical polymerization process, the amino acids serve as both supporting and counter ions to be doped into the polymer.The conductivity of the polypyrrole was measured at 0.3 to 1.0 S / cm in an acidic amino acid solution In the polymer obtained was significantly higher than the acidic amino acid solution obtained polymer, the polymer also has good electrochemical activity and electrochemical stability, in the -0.5 V to +0.5 V interval of a pair of oxidation Reduction peak, the shape and characteristics of the redox peak remained substantially unchanged after 100 cycles.From scanning electron microscopy and transmission electron microscopy photographs can be seen that the doping of different amino acids have an impact on the morphology of polypyrrole, due to amino acid Soft template effect, in several amino acid aqueous solution can be obtained with a polypyrrole nano-fiber structure.