高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (11): 1771.

• 论文 • 上一篇    下一篇

还原态卤代聚苯胺能带结构及掺杂导电机理的研究

林宪杰1, 徐龙君2, 赵成大3   

  1. 1. 菏泽师范专科学校化学系, 菏泽, 274015;
    2. 重庆大学资环学院;
    3. 东北师范大学化学系
  • 收稿日期:1994-11-15 出版日期:1995-11-24 发布日期:1995-11-24
  • 通讯作者: 赵成大
  • 作者简介:林宪杰,男,36岁,硕士,副教授.
  • 基金资助:

    国家自然科学基金

Studies on the Energy Band Structure and Conducting Mechanism of Reduced-state Polyhalogenoaniline

LIN Xian-Jie1, XU Long-Jun2, ZHAO Cheng-Da3   

  1. 1. Chemistry Department, Heze Teachers′College, Heze, 274015;
    2. Resources and Environment College, Chongqing University;
    3. Chemistry Department, Morthoast Normal University, Changchun, 130024
  • Received:1994-11-15 Online:1995-11-24 Published:1995-11-24

摘要: 用EHMO-CO方法研究了卤代聚苯胺的能带结构及其掺杂导电机理。结果表明:在掺杂态卤代聚苯胺中形成单极化子晶格;取代主要通过改变带宽影响电导率,由掺杂而大幅度地提高了电导率是因为大大缩小了带隙,并进一步证实了外层d轨道的成键作用。

关键词: 卤代聚苯胺, 能带结构, 导电机理, 单极化子

Abstract: In this paper,the energy band structure and the conducting machanism of polyhalogenoaniline have been studied by using EHMO-CO method. The result showed that the carrier of polyhalogenoaniline is monopolaron and the polaron lattice is formed on the chains of the polyhalogenoaniline, We find that substitution affects the conductivity of the polymer is due to that the band width of the highest occupied energy band(HOBW) is changed, but the doping raises greatly the conductivity of the polymer because the band gap between the HOBW and the LUBW is markedly lessened.The role of d-orbital in the energy band of polymer is discussed.

Key words: Polyhalogenoaniline, Energy band structure, Conducting mechanism, Monopolaron

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