| 聚苯胺/氧化石墨的合成及其在DNA识别上的应用 |
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| 引用本文： | 邹艳红,吴婧,刘洪波,陈宗璋.聚苯胺/氧化石墨的合成及其在DNA识别上的应用[J].新型炭材料,2005,20(4):360-364. |
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| 作者姓名： | 邹艳红 吴婧 刘洪波 陈宗璋 |
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| 作者单位： | 1. 湖南大学,材料科学与工程学院,湖南,长沙,410082
2. 湖南大学,化学化工学院,湖南,长沙,410082 |
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| 基金项目： | 国家自然科学基金 （59872009） |
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| 摘 要： | 采用层离/吸附和原位聚合相结合的方法合成了聚苯胺/氧化石墨复合材料（PAn/GO）.利用TEM、AFM、XRD、FTIR等方法对PAn/GO的结构和电化学性能进行了研究.以PAn/GO修饰炭糊电极为工作电极,采用方波伏安法（SWV）检测了单链小牛胸腺DNA（CTssDNA）和双链小牛胸腺DNA（CTdsDNA）.研究结果表明：PAn/GO为当量直径约60 nm～70 nm的扁球状纳米颗粒,这些纳米颗粒呈链状聚集,并具有电化学活性;聚苯胺（PAn）以双层平行排列的方式嵌入氧化石墨层间和包覆在氧化石墨表面两种形式与氧化石墨结合;PAn/GO修饰炭糊电极识别单链小牛胸腺DNA（CTssDNA）和双链小牛胸腺DNA（CTdsDNA）时的峰电位分别为90.99 mV和18.00 mV.
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| 关 键 词： | 聚苯胺 氧化石墨 复合材料 电化学活性 DNA |
| 文章编号： | 1007-8827（2005）04-0360-05 |
| 收稿时间： | 2005-06-24 |
| 修稿时间： | 2005-11-20 |
Preparation of polyaniline-intercalated graphite oxide composite and ITS application in detecting DNA |
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| ZOU Yan-hong,WU Jing,LIU Hong-bo,CHEN Zong-zhang.Preparation of polyaniline-intercalated graphite oxide composite and ITS application in detecting DNA[J].New Carbon Materials,2005,20(4):360-364. |
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| Authors: | ZOU Yan-hong WU Jing LIU Hong-bo CHEN Zong-zhang |
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| Affiliation: | 1. College of Materials Science and Engineering, Hunan University, Changsha 410082, China; 2. College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China |
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| Abstract: | Polyaniline-intercalated graphite oxide(PAn/GO) composites were synthesized by a procedure similar to an exfoliation/adsorption followed by in situ polymerization.The microstructure and electrochemical activity of PAn/GO composite were investigated by TEM,AFM,XRD and FTIR.Calf thymus single-stranded DNA(CTssDNA) and double-stranded DNA(CTdsDNA) were indentified by square wave voltammograms(SWV) using PAn/GO composite modified carbon paste as a working electrode.Results show that the PAn/GO composite in an ellipsoidal shape and with AN equivalent diameter of 60-70 nm,aggregates to form chains and possesses electrochemical activity.A portion of PAn was intercalated into GO by two parallel chains,and the other portion was coated on the surfaces of the GO.The SWV redox potentials of a PAn/GO composite modified carbon paste electrode in CTssDNA and CTdsDNA solutions are 90.99 mV and 18.00 mV respectively. |
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| Keywords: | Polyaniline Graphite oxide Composite Electrochemical activity DNA |
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