【作者】 范颖；

【导师】 刘丽敏；

【作者基本信息】 北京化工大学 ， 物理化学， 2005， 硕士

【摘要】 众多共轭高分子材料中,聚苯胺以其单体价格低廉、合成工艺简单、环境稳定性好、导电性能优良而倍受关注。特别是随着聚苯胺溶解性问题的逐步解决,使它成为最具开发应用前景的导电聚合物。 本研究重点着眼于寻求一种简便可行的合成途径,将具有优良光、电、磁等特性的氧化钇嵌入到典型的导电高聚物聚苯胺（PAn）中,以期通过二者的协同效应获得新型的PAn/Y₂O₃杂化纳米材料。经检索国内外文献至今还未见有关这方面的报道。 作者采用溶胶—原位聚合法,分别用盐酸（HCl）和对甲苯磺酸（TSA）作为掺杂剂,获得了导电的聚苯胺/氧化钇杂化纳米材料。该法是先用溶胶法制得有表面活性剂修饰的氧化钇水溶胶,而后在此体系中原位引发苯胺单体的聚合,最后经后处理步骤获得相应的杂化材料并对其结构和相关性能进行了表征。 结果表明,杂化材料中,Y₂O₃纳米粒子的加入对PAn的结构产生了影响,但二者之间并未发生化学键的结合。材料的电导率会随着纳米Y₂O₃含量的提高而降低。 HCl掺杂所得的杂化材料的电导率较高,但在普通有机溶剂中的溶解性能不理想,TEM观测显示Y₂O₃纳米粒子发生了严重的团聚。而更多还原

【Abstract】 Polyaniline (PAn) is considered to be the most prospective in application among the various conjugated conducting polymers because it low price, simple method of synthesizing and high conductivity.The study emphasized on finding out a convenient and suitable way by which Y2O3 nanoparticles with attractive optical, electrical and magnetic functions can be intercalated into PAn to synthesize a new type of organic-inorganic nanohybrid materials. The correlative reports have not been seen in all of literatures.Using HCl and TSA as doped reagent respectively, PAn/Y2O3 nanohybrid materials were synthesized with sol-in situ polymerization method. Firstly, colloidal yttria which adsorb by DBS was prepared by sol-gel method. Then aniline monomers were initiated to occur in-situ polymerization. Finally, corresponding hybrid materials were obtained after further processes. The structure and properties of hybrid materials were更多还原