【摘要】 本文研究了不同电化学氧化聚合条件下所得聚吡咯的红外光谱,X射线光电子能谱、元素分析、X射线衍射图及扫描电子显微镜图等。对聚吡咯的电导性、电导率的依赖性、化学结构及结晶性等进行了讨论。更多还原

【Abstract】 The high electrical conductivity and stability of electrochemical oxidative polypyr-roles are potentially attractive systems. So far, the real chemical structure is still obscure to us.The chemical structure and electrical properties of polypyrroles prepared by electrochemical oxidation in different solvents and supporting electrolytes with various electrodes have been observed. Structure characterization was done by IE, XPS, X-ray diffraction, elemental analysis and electron microscopy. The room temperature conductivities of the films increased 10-20 times after exposure to air. The temperature dependence of conductivity was measured byVSC method that showed the metallic character of the polymer. IR spectra showed no N-H absorption, but CH2 absorption appeared. We suggest there are pyrrolidone end groups in the polymer chains, and branching or crosslinking happend to the polymer. XPS of the films showed that the distribution of positive charge of pyrrole ring are different between BP4- doped and other anion doped samples. The films are amorphous with small degree of crastallinity. The films showed electric switching effect.更多还原