高等学校化学学报

• 研究论文 • 上一篇    下一篇

以DNA为模板构造苯胺-DNA复合物纳米线和聚苯胺纳米导线

杨涛; 魏刚; 牛利; 李壮   

  1. 中国科学院长春应用化学研究所, 电分析化学国家重点实验室, 长春130022;
    中国科学院研究生院, 北京 100039
  • 收稿日期:2005-04-19 修回日期:1900-01-01 出版日期:2006-06-10 发布日期:2006-06-10
  • 通讯作者: 牛利

Fabrication of Linear Aniline-DNA Complex Nanowires and DNA-templated Polyaniline Nanowires

YANG Tao; WEI Gang; NIU Li*; LI Zhuang   

  1. State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of
    Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China;
    Graduate School of the Chinese Academy of Sciences, Beijing 100039, China
  • Received:2005-04-19 Revised:1900-01-01 Online:2006-06-10 Published:2006-06-10
  • Contact: NIU Li

摘要: 在溶液中, 以DNA为模板构造出了线性的苯胺-DNA复合物纳米线. 用压缩气流将得到的复合物纳米线拉直并固定到云母基底上. 用原子力显微镜(AFM)可观察到形貌规整的苯胺-DNA复合物纳米线. 苯胺单体在溶液中能从各个方向上组装到DNA分子上, 从而使DNA模板分子的表面包裹了一层苯胺. 以苯胺-DNA复合物纳米线为前驱体通过进一步化学氧化聚合得到了以DNA为模板的聚苯胺纳米导线.

关键词: DNA模板, 聚苯胺, 纳米导线, 原子力显微镜

Abstract: In the present work, we developed a simple method for fabricating conducting polymer nanowires and characterized the resulted nanostructures mainly by atomic force microscopy(AFM). With DNA as templates, aniline-DNA complex nanowires were first produced in solution via a self-assembled process in which aniline monomers assembled on the entire DNA molecule surface from any direction. Compressed gas flow was then used to stretch the obtained aniline-DNA complex nanowires onto mica substrate. The linear aniline-DNA complex nanowire arrays can be directly observed from the AFM images. Finally, we got the polyaniline(PAn) nanowires based on the precursor of aniline-DNA complex nanowires through further chemical oxidative polymerization. The aniline-DNA complex nanowires and the polyaniline(PAn-DNA) nanowires both exhibit a low background on the unmodified mica substrates. This strategy can be adopted for constructing other conducting polymer nanowires.

Key words: DNA-template, Polyaniline, Nanowire, AFM

中图分类号: 

TrendMD: