Quantitative non-covalent functionalization of carbon nanotubes
Quantitative non-covalent functionalization of carbon nanotubes
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DOI：
10.1007/s10876-006-0076-7
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发表时间：
2006-12-01
影响因子：
2.8
通讯作者：
ng, Ka Mi Ng
中科院分区：
文献类型：
--
作者：
Ma, Anson;Lu, Jun;ng, Ka Mi Ng
我们报道了一种用酞菁 (Pc) 化合物对单壁碳纳米管 (SWNT) 进行定量非共价官能化的简便方法，其表面覆盖率达到 49%。阐明了几个工艺参数对功能化过程的影响。首先，与纯化的单壁碳纳米管和多壁碳纳米管（MWNT）相比，所生产的单壁碳纳米管具有最大程度的功能化。其次，官能化的程度对PC化合物的特定分子结构敏感。最后，在溶剂选择方面，发现二甲基甲酰胺（DMF）的官能化程度最大，其次是氯仿（CHCl3）和1,2二氯苯（ODCB）。本文报道的方法为PC分子与碳纳米管之间的相互作用提供了新的见解，为合理控制功能化程度铺平了道路，从碳纳米管应用的角度来看，这是重要的一步。
We report a convenient method for quantitative non-covalent functionalization of single-walled carbon nanotubes (SWNT) with phthalocyanine (Pc) compounds, in which a surface coverage of 49% was achieved. The effect of several process parameters on the functionalization process was elucidated. Firstly, as-produced SWNT gave the largest extent of functionalization compared with purified SWNT and as-produced multi-walled carbon nanotubes (MWNT). Secondly, the extent of functionalization was sensitive to the specific molecular structures of the Pc compounds. Finally, in terms of solvent selection, dimethylformamide (DMF) was found to give the largest extent of functionalization, which is then followed by chloroform (CHCl3) and 1,2dichlorobenzene (ODCB). The method reported in this paper provides new insights on the interactions between Pc molecules and carbon nanotubes and paves the way for rational control of the degree of functionalization, which is an important step from the perspective of carbon nanotube applications.