溴蒸气掺杂聚苯乙炔的导电性能  

Electrical conductivity of polyphenylacetylene doped by bromine vapor

作　　者：梁旦[1] 韩菲菲[1] 王红敏[1] 唐国强[1] 叶葏[1] 吴玲娟[1] 徐学诚[1] 

机构地区：[1]华东师范大学物理系纳米功能材料与器件研究中心,上海200062

出　　处：《华东师范大学学报（自然科学版）》2009年第4期124-130,136,共8页Journal of East China Normal University(Natural Science)

基　　金：上海市纳米科技专项基金(0252nm011)

摘　　要：通过溴蒸气的吸附,聚苯乙炔(PPA)的电导率比吸溴前提高近12个数量级.将溴掺杂的粉末样品压片成型后发现其电导率随时间的增加而提高.固体紫外光谱、红外光谱和X光电子能谱表明溴与PPA之间存在较强的共轭作用,形成了电子转移复合物;溴掺杂有利于增大PPA的共轭程度,提高PPA的电导率;压力作用有助于增强溴对PPA的掺杂效应.Through absorption of bromine vapor, the electrical conductivity of Polyphenylacetylene （PPA） enhanced by 10^12 times. After pressing the bromine doped powder sample into pellet, we found that the conductivity of the samples increased with time. UV Vis spectra, IR, and XPS spectra indicated that strong conjugation effect exists between PPA and bromine, and Charge Transfer Complex （CTC） is formed in PPA after doping; bromine doping increases the conjugation of PPA and improves its conductivity; the pressure can promote the doping effect of bromine on PPA.

关 键 词：溴 聚苯乙炔 掺杂 共轭 电子转移复合物 压力 

分 类 号：O632.13[理学—高分子化学]