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化学学报
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化学学报 ›› 2009, Vol. 67 ›› Issue (14): 1643-1649. 上一篇    下一篇

研究论文

金属卟啉有机共价和非共价修饰多壁碳纳米管

王红科a 彭圣明a 赵鸿斌*,a,b 许兰兰a 张 辉a 陆旭甲a

  

  1. (a湘潭大学化学学院 环境友好化学与应用省部共建教育部重点实验室 湘潭 411105)
    (b东莞理工学院化学与环境工程学院 东莞 523808)

  • 投稿日期:2008-10-23 修回日期:2008-12-30 发布日期:2009-07-28
  • 通讯作者: 赵鸿斌

Covalently and Noncovalently Chemical Functionalization of Multi-walled Carbon Nanotube with Metalloporphyrin

Wang, Hongke a Peng, Shengming a Zhao, Hongbin *,a,b Xu, Lanlan a
Zhang, Hui a Lu, Xujia a
  

  1. (a Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry,
    Xiangtan University, Xiangtan 411105)
    (b College of Chemical and Environmental Engineering, Dongguan University of Technology, Dongguan 523808)
  • Received:2008-10-23 Revised:2008-12-30 Published:2009-07-28
  • Contact: Zhao, Hongbin

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合成了5-(4-羟基苯基)-10,15,20-三苯基卟啉锌配合物, 与活化的多壁碳纳米管(MWNT)发生酯化反应, 从而得到金属卟啉有机共价化学修饰的多壁碳纳米管复合物; 利用金属卟啉环上的π电子与多壁碳纳米管管壁上的π电子通过π-π堆积效应, 得到金属卟啉有机非共价修饰的多壁碳纳米管复合物. 通过透射电镜(TEM)考察了金属卟啉-多壁碳纳米管复合物的形貌特征; 通过红外光谱对产物的化学结构进行了表征; 通过紫外光谱、荧光光谱和热失重分析(TGA)对比分析了两类复合物, 发现非共价修饰的金属卟啉-碳纳米管复合物的荧光淬灭率更高, 非共价修饰的金属卟啉-碳纳米管复合物中卟啉的含量比较高.

关键词: 金属卟啉, 多壁碳纳米管, 共价化学修饰, 非共价化学修饰, 复合物

Zinc 5-(4-hydroxyphenyl)-10,15,20-triphenylporphyrin was synthesized. Then the covalently modified nanocomposite was gained through the esterification between the oxidized multi-walled carbon nanotube (MWNT) and the zincporphyrin. Noncovalently modified with the zincporphyrin, the nanocomposites was gotten through π-π pileup. The morphology of the nanocomposites was studied by transmission electron microscopy (TEM), and the structure of resultant products was characterized by FT-IR spectra. The comparison of the two kinds of nanocomposites was studied by UV absorption, fluorescence spectroscopy and TGA. Moreover, the noncovalent functionalization provides a higher fluorescence quenching than the covalent functionalization. The weight percentage of metalloporphyrin attached to the MWNT through π-π pileup is higher.

Key words: metalloporphyrin, multi-walled carbon nanotube, covalently chemical functionalization, non-covalently chemical functionalization, composite