Solvent-free functionalization of carbon nanotubes
Solvent-free functionalization of carbon nanotubes
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DOI：
10.1021/ja0289806
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发表时间：
2003-02-05
影响因子：
15
通讯作者：
Tour, JM
中科院分区：
文献类型：
--
作者：
Dyke, CA;Tour, JM
开发了一种全新的单壁和多壁碳纳米管侧壁功能化技术，其中不需要溶剂，反应时间大大缩短（60 °C下1小时）。通过宏观机械变形利用纳米管绳的长线性尺寸，仅通过使用搅拌棒使管机械变形来产生反应位点。这种方法消除了对大体积溶剂（102 L/g）的需要，这在以前被认为是必不可少的，因为碳纳米管的不溶性。使用一系列的4-取代苯胺和亚硝酸盐，芳基重氮中间体原位生成，并允许与管反应。拉曼，红外和紫外光谱，加上热重分析和溶解度的研究，支持的归属。
A fundamentally new single-walled and multiwalled carbon nanotube sidewall functionalization technique has been developed in which solvent is not required and the reaction times are greatly shortened (1 h at 60 °C). Exploiting the long linear dimension of the nanotube ropes by macroscopic mechanical deformation, reactive sites are generated merely by mechanically deforming the tubes using a stir bar. This approach eliminates the need for large volumes of solvent (∼2 L/g), which were formerly considered essential due to the insolubility of carbon nanotubes. Using a series of 4-substituted anilines and a nitrite, the aryl diazonium intermediates were generated in situ and permitted to react with the tubes. Raman, IR, and UV spectroscopies, coupled with thermogravimetric analyses and solubility studies, support the assignments.