基于凝胶的金属和半导体碳纳米管的简单且可扩展的分离方法。
Simple and scalable gel-based separation of metallic and semiconducting carbon nanotubes.
作者信息
Tanaka Takeshi, Jin Hehua, Miyata Yasumitsu, Fujii Shunjiro, Suga Hiroshi, Naitoh Yasuhisa, Minari Takeo, Miyadera Tetsuhiko, Tsukagoshi Kazuhito, Kataura Hiromichi
机构信息
Nanotechnology Research Institute, National Institute of Advanced Industrial Science and Technology, Ibaraki, Japan.
出版信息
Nano Lett. 2009 Apr;9(4):1497-500. doi: 10.1021/nl8034866.
We report a rapid and scalable method for the separation of metallic and semiconducting single-wall carbon nanotubes (SWCNTs); the separation is performed by the selective adsorption of semiconducting SWCNTs on agarose gel. The most effective separation was realized by a simple procedure in which a piece of gel containing SWCNTs and sodium dodecyl sulfate was frozen, thawed, and squeezed. This process affords a solution containing 70% pure metallic SWCNTs and leaves a gel containing 95% pure semiconducting SWCNTs. Field-effect transistors constructed from the separated semiconducting SWCNTs have been demonstrated to function without any electrical breakdown.
我们报道了一种快速且可扩展的方法，用于分离金属性和半导体性单壁碳纳米管（SWCNTs）；该分离是通过半导体性SWCNTs在琼脂糖凝胶上的选择性吸附来进行的。最有效的分离是通过一个简单的程序实现的，即将一块含有SWCNTs和十二烷基硫酸钠的凝胶冷冻、解冻并挤压。这个过程得到一种含有70%纯金属性SWCNTs的溶液，同时留下一种含有95%纯半导体性SWCNTs的凝胶。由分离出的半导体性SWCNTs构建的场效应晶体管已被证明能正常工作而不会发生任何电击穿。
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