以DNA为模板构造苯胺-DNA复合物纳米线和聚苯胺纳米导线  

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

作　　者：杨涛[1] 魏刚[2] 牛利[1] 李壮[1] 

机构地区：[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 [2]中国科学院研究生院,北京100039

出　　处：《高等学校化学学报》2006年第6期1126-1130,共5页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:20475053;30070417)资助

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.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 tem- plates, 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.

关 键 词：DNA模板 聚苯胺 纳米导线 原子力显微镜 

分 类 号：O640[理学—物理化学] Q523[理学—化学]