导电聚合物的电化学现场变温ESR-电导测量

In this project, some new experimental techniques, especially the in-situ electrochemical temperature-variable ESR-conductivity measurement technique, were successfully established. In-depth investigations were carried out for typical conducting polymers such as polyaniline, and lots of new experimental data were obtained, which repeatedly confirmed the transformation from Curie spins to Pauli spins on increasing the doping level of the polymer. The potential-dependent ESR intensity-temperature relationship, acquired for the first time under in-situ electrochemical conditions, was the most direct evidence for the transformation of spin nature. All these results strongly supported the polaron-lattice model, and promoted the comprehension of the conduction mechanism. In addition to above achievements, some new important phenomena were discovered during the investigation. For example, an abnormal relationship between ESR intensity and conductivity was observed when the conducting polymer coexisted with certain redox couples, implying there may exist another unknown conduction mechanism under these conditions.

创建用于研究导电聚合物的电化学现场变温ESR-电导测量技术，对几种典型导电聚合物R-温度关系判断电子自旗帜性质（居晨或保利自旋）的潜力和ESR-电导同步测试的优势。从“电化学-ESR-电导-温度”数据得出自旋种类及浓度与聚合物电导的关系的实验规律，进而深化对导电机理的认识。