导电聚吡咯、聚苯胺作为一类重要的导电聚合物，最大的优点是环境稳定性好、电导率高、合成简易，在多功能材料和器件方面有许多潜在的应用，因而成为导电高分子中最具有应用前景的聚合物之一。具有可控性PS-导电聚合物核/壳形貌的胶体粒子逐渐引起人们的研究热情，这是由于他们在光子晶体，多酶生物催化和药物释放体系具有广泛的应用。作为一种探测非均匀体系内部信息的有效手段，介电弛豫谱（Dielectric Relaxation Spectroscopy, 简称DRS）近年来引起了人们的重视。对PS-导电聚合物核/壳复合微球悬浮液体系的介电弛豫行为的研究非常有意义且非常具有挑战性，这是由于这种特殊的非均相体系是非常复杂的体系，它们涉及的是分散粒子和分散介质两者的复杂的结构性质，以众多的，发生在不同时间段的动力学过程为特征的。本文首次采用了介电弛豫谱方法对PS-导电聚合物核/壳复合微球悬浮液这种具有两相明显界面的非均匀体系进行了系统的研究。从介电谱的发展方面来看，对于这种体系进行介电研究意味着给粒子悬浮液体系的介电弛豫谱研究注入了新的血液和灵魂，从而为获得这种模型粒子分散系的分散相和分散介质的动电性质奠定了基础。 基于对介电谱方法和介电谱方法在传统粒子分散系，导电聚合物体系中的应用和发展以及核/壳导电聚合物的研究现状的回顾。对核/壳导电聚合物复合微球悬浮液体系进行了介电测量和介电解析。主要内容有以下几个方面：1、样品（PS-PPY，PS-ZnO，PS-PANI核/壳复合微球）的制备。详细步骤见第二章。2、PS-PPY核/壳悬浮液在40 Hz到110 MHz频率范围内进行了介电测量。通过分析所得到的介电谱来获得分散相的内部性质。详细的讨论了粒子体积分数和介电参数之间的关系。研究重点是把核/壳微球视做均匀球，用Hanai方法从介电参数计算出的体系相参数以及单位体积分数内的介电增量和悬浮液中粒子体积分数的依存性上。并且，阐明了由粒子浓度的频率依存性的研究为基础所获得的一些现象和结果。3、PS-ZnO核/壳悬浮液在40 Hz到110 MHz频率范围内进行了介电测量。介电测量和介电分析是通过两方面进行的，一个是通过改变电解质浓度来考察双电层对此悬浮液的介电响应的影响，另一方面是通过改变体积分数来考察粒子间的相互作用对悬浮液的介电响应的影响。为了阐明此体系的多种弛豫机制和由此而产生的多种弛豫现象，我们把一些重要的结果和以往报导的单组成成分粒子悬浮液的介电测量所获得的结果进行对比。同时，我们用Hania方法计算出了代表粒子个体性质的相参数。通过这个平行实验和分析结果来考察PS-导电聚合物核/壳复合微球悬浮液的介电行为，从而可以揭示出核-壳导电（包括半导体）复合微球是否都与PS-导电聚合物核/壳复合微球具有相同的介电弛豫行为或是相同的介电弛豫谱特征。4、作为一个前期工作的拓展性和系统性的研究，我们在同频率域内对PS-PANI核/壳复合微球悬浮液进行了介电测量和解析。目的是对PS-导电聚合物核/壳复合微球悬浮液的介电行为的研究献上进一步的考察，主要从粒子体积分数和悬浮液的温度对悬浮液的介电行为的影响两方面进行研究。重点研究PS-PANI微球悬浮液的介电弛豫的特征，进而来分析这种体系的介电弛豫行为与传统粒子PS的介电行为的差异，从而达到分析此特殊非均相体系的介电弛豫行为的目的。5、本工作的最后一章是对整个工作的总结：通过三种体系（PS-PPY，PS-ZnO，PS-PANI）粒子悬浮液的介电测量和介电分析，我们对PS-导电聚合物核/壳复合微球的悬浮液的介电行为特征作出总结，希望能为今后的核/壳粒子悬浮液介电行为的研究提供一定的实验和理论基础。

Conducting polymers such as Polypyrrole (PPY) and polyaniline (PANI) are an important type of electrically conducting polymer with many features that could be exploited in mang potential applications, owing to their excellent electronic and environmental stability, facile synthesis, especially a unique and reversible doping/de-doping chemical property. Therefore, they are one type of the most popular conducting polymers with potential applications. It is well-known that PS-conducting polymer colloidal particles with controlled morphology are increasingly attracted scientific passion due to their potential applications in photonic crystals, multi-enzyme biocatalysis, and drug delivery systems. As a valid tool to probe the interior information of heterogeneous systems, dielectric relaxation spectroscopy (DRS), has attracted more attention. Meanwhile, dielectric study on PS-conducting polymer core-shell composite microspheres has proven to be challenging since heterogeneous systems, in particular aqueous suspensions of such well-defined particles, are very complex systems characterized by a variety of dynamic processes, occurring at different time scales, which involve characteristic of the complex interfacial structure of both dispersed particles and disperse medium. The systematic study on this work is the first time to investigate the special heterogeneous systems ---suspensions of PS-conducting polymer core/shell particles with two typical interfaces. From the point of development of DRS, this work is the new contribution on the dielectric relaxation spectroscopy and hope to expand the experimental data or theoretical reference in anticipation of future modeling study of DRS.On the basis of reviewing DRS method, the application and development of DRS in conducting polymer and disperse system of classical particles, and the studying status of core/shell conducting polymer, dielectric measurement and dielectric analysis on such heterogeneous of PS-conducting polymer core/shell composite microspheres have been carried out. The main contents of the present dissertation are as follows: 1. The fabrications of three samples (PS-PPY, PS-ZnO, PS-PANI core/shell composite microspheres) are presented in chapter 2.2. Dielectric measurement of an interesting system, suspensions of PS-PPY core/shell conducting particles, is performed over a frequency range of 40 Hz to 110 MHz. The aim of this work is to obtain the interior properties of disperse phase by analyzing dielectric spectra observed. The relationship between dielectric parameters and volume fraction of particles is discussed in detail. Special emphasis is placed on phase parameters of this system which have been calculated from dielectric parameters by using the Hanai method, looking at the core/shell spheres as uniform spheres. Some reasonable explanations are proposed to elucidate the results obtained from the study on the frequency dependence of concentration of particles. 3. Dielectric measurement of PS-ZnO core/shell microspheres over a frequency range of 40 Hz to 110 MHz is performed. Special emphasis is focused on the dependence of dielectric parameters on electrolyte concentration and volume fraction of particles. Some of important results are compared with the results of related research works in order to clearly discover the multi-relaxation mechanisms and corresponding multi-relaxation behaviors. Moreover, phase parameters of this system which roughly present individual dielectric behaviors of particles have been calculated from dielectric parameters by using the Hanai method, roughly looking at the core-shell sphere as uniform spheres. According to this parallel experiment and analytical results, the dielectric behaviors of suspensions of PS-conducting polymer core/shell composite microspheres have been investigated further. Then, the analytical results can disclose whether or not the dielectric behaviors and dielectric spectroscopy of suspensions of core/shell conducting composite particles are identical to those of PS-conducting polymer.4. As an extensive or systematic study of the previous work carried out by our group, the dielectric measurement and analysis of suspensions of PS-PANI core-shell microspheres have been carried out. The aim of this work is to show new data and discussion on dielectric study of suspensions of PS-conducting polymer composite microspheres from two contributions of volume fraction and temperature on dielectric behaviors of suspensions of PS-PANI composite microspheres. The analysis in this investigation is guided by the dielectric parameters fitted by Cole-Cole equation. Special emphasis is placed on the characteristic of dielectric relaxation of suspensions of PS-PANI microspheres, especially the mismatch of dielectric relaxation behaviors of suspensions between the PS/conducting core-shell composite particles and classical particles---PS, accordingly, the dielectric relaxation behaviors of such special heterogeneous system can be analyzed in detail. 5. A summary of the entire work: according to dielectric measurement and dielectric analysis of suspensions of three samples (PS-PPY, PS-ZnO, PS-PANI), we make a summary of the dielectric characteristics of suspensions of PS-conducting polymer core/shell microspheres. Then we hope to expand the experimental database or theoretical reference in anticipation of future modeling studies of dielectric relaxation behaviors of suspensions of core/shell particles.