Immobilizing shortened single-walled carbon nanotubes (SWNTs) on gold using a surface condensation method
Immobilizing shortened single-walled carbon nanotubes (SWNTs) on gold using a surface condensation method
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DOI：
10.1006/jcis.2001.8039
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发表时间：
2002-01-15
影响因子：
9.9
通讯作者：
Liu, ZF
中科院分区：
文献类型：
--
作者：
Nan, XL;Gu, ZN;Liu, ZF
我们提出了一种在金表面组装单壁碳纳米管（SWNTs）的表面冷凝方法。通过化学氧化将所制备的长且随机缠结的单壁碳纳米管切割成短管，使碳纳米管被羧基官能团终止。然后进行表面缩合反应，通过将氨基自组装单分子层（SAM）修饰的金基底浸入到二甲基甲酰胺悬浮液中的羧基纳米管与二环己基碳二亚胺缩合剂的帮助下。拉曼光谱和原子力显微镜（AFM）的结果表明，一个高度对齐的组装单壁碳纳米管已形成的黄金，与纳米管站在表面上足够稳定的长时间超声处理。结合微接触印刷（muCP）技术，我们已经制作了图案化的纳米管组件使用这种表面冷凝方法。此外，我们发现，“巨型”碳纳米管倾向于在氨基末端表面形成束，可能遵循成核生长模型。(C)2002年，Elsevier Science。
We propose a surface condensation method for assembling single-walled carbon nanotubes (SWNTs) on gold. The as-prepared long and randomly tangled SWNTs were cut into short pipes by chemical oxidation, allowing the nanotubes to be terminated by carboxyl functionalities. A surface condensation reaction was then performed by immersing an amino self-assembled monolayer (SAM)-modified gold substrate into the dimethylformamide suspension of carboxylic nanotubes with the aid of dicyclohexylcarbodiimide condensation agent. Raman spectroscopy and atomic force microscopy (AFM) results show that a highly aligned assembly of SWNTs has been formed on gold, with the nanotubes standing on the surface stable enough for a long ultrasonication. In combination with the microcontact printing (muCP) technique, we have fabricated patterned nanotube assemblies using this surface condensation method. Moreover, we found that the "giant" carbon nanotubes tend to form bundles on an amino-terminating surface, likely following a nucleation-growth model. (C) 2002 Elsevier Science.