Study on Conjugated Highly Conducting Polymer Gel and Its Applications for Actuator, Sensor and Display Devices

研究了一些共轭高导电聚合物凝胶的制备方法，如聚(3-烷基噻吩凝胶)。导电聚合物凝胶的体积、颜色、形状和电导率随着温度、溶剂组成和掺杂程度的变化而急剧变化，超过阈值条件取决于聚合物的结构。结论是导电聚合物凝胶中链间相互作用的变化导致了掺杂后导电聚合物凝胶性质的变化。掺杂离子的扩散系数取决于凝胶的交联度。这一观察结果被认为是作为传感器材料的重要特征。导电聚合物凝胶的体积不稳定动力学取决于溶剂的种类、组成甚至凝胶膜的大小。对这种依赖的机理进行了讨论。这种导电聚合物凝胶的尺寸依赖动力学表明，小分子凝胶膜和纤维的集成应该是实现具有快速响应的执行器的有效方法。本文制备了由聚(3-烷基噻吩凝胶)和聚吡咯薄膜组成的双压电薄膜，并对其特性进行了研究。这种双压片薄膜会随着温度、溶剂、恒压和电化学掺杂的变化而弯曲。优化了工艺条件，提高了凝胶驱动器的性能。研究了双压电薄膜的瞬变特性，观察到了一种异常的瞬变现象。利用该模型对新型功能凝胶的应用进行了研究，为共轭导电聚合物凝胶的实际应用提供了重要的理论依据。

Preparation methods of a number of conjugated highly conducting polymer gels such as poly(3-alkylthiophene) gel have been investigated. Volume, color, shape, and conductivity of the conducting polymer gels change drastically upon change in temperature, solvent composition and doping level over the threshold conditions which depend on the polymer structure. Change in inter-chain interaction in the conducting polymer gels was concluded to result in these changes in properties of conducting polymer gels upon doping. Diffusion coefficient of the dopant ions depends on the degree of cross-linking of the gels. This observation is thought to be important characteristics as the sensor material.Kinetics of volume instability of the conducting polymer gels depend on the kind of solvent, composition and even size of the gel film. The mechanism of this dependency has been discussed. This size-dependent inetics of the conducting polymer gel indicates that the integration of small gel films and fibers should be effective to realize the acrtuators having repid responsibility.A bimorph film composed of poly(3-alkylthiophene) gel and polypyrrole films has been prepared and its characteristics have been studied. This bimorph film bends upon changes in temperature, solvent, chamical and electrochemical doping. The conditions were optimized to improve the characteristics of gel actuator. The transient characteristics of the bimorph film have been studied and an anormalous transient phenomemon ws obseved. Novel functional gel application was proporsed utilizing this anormaly.These results allow us to conclude important gide line for practical applications of the conjugated conducting polymer gels.