共轭聚合物中稳定自由基的ESR研究  

ESR Study on Stable Cation Radical of a Conjugated Polymer

作　　者：张瑞丰[1] 郑海鹏[1] 沈家骢[1] 

机构地区：[1]吉林大学化学系,长春130023

出　　处：《高等学校化学学报》1997年第10期1711-1714,共4页Chemical Journal of Chinese Universities

基　　金：国家教育委员会留学回国人员基金;长春应用化学研究所中国科学院高分子物理联合开放研究实验室基金

摘　　要：通过ESR跟踪测试，研究了3种胺类化合物与聚（N，N-二甲基苯胺）（PDMA）中离域正离子自由基相互作用的过程，发现胺类化合物能使PDMA的ESR谱形发生不同程度的劈裂、信号强度随时间的变化与胺的结构有关，说明正离子自由基与亲核试剂作用后发生了定域化转变．通过进一步比较发现PDMA自由基的亲电活性不如聚苯上的正离子自由基．Poly(N,N-dimethylaniline) (PDMA) is a novel soluble polyphenylene derivative,which is very easy to form delocalized and stable canon radicals in CHCl3. In this paper, wemainly studied the interaction between the cation radicals of PDMA and amines. It' S foundthat the interaction could lead to PDMA' S ESR spectra split, and the structures of aminesrelate to the change of PDMA' S signal strength and split, which showed that PDMA' scanon radical turned partly into localized state with nucleophile. We also discussed itselectrophilic activity and contrasted with the cation radical of polyphenylene.

关 键 词：正离子 自由基 亲核试剂 PDMA 胺 共轭聚合物 

分 类 号：O633.21[理学—高分子化学] O621.146[理学—化学]