Optical Isomer Separation of Single-Chirality Carbon Nanotubes Using Gel Column Chromatography
Optical Isomer Separation of Single-Chirality Carbon Nanotubes Using Gel Column Chromatography
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DOI：
10.1021/nl5025613
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发表时间：
2014-11-01
期刊：
影响因子：
10.8
通讯作者：
Kataura, Hiromichi
中科院分区：
文献类型：
--
作者：
Liu, Huaping;Tanaka, Takeshi;Kataura, Hiromichi
我们报道了一种凝胶柱色谱分离单手性碳纳米管的光学异构体(即左右手结构)的方法。该方法利用了手性单壁碳纳米管(SWCNT)的两个异构体与基于葡聚糖烯丙基的凝胶的相互作用的差异，这是由于凝胶的手性部分与异构体的选择性相互作用造成的。使用这项技术，我们从HIPCO SWCNTs中分离了9个不同的(n，m)单手性物种的光学异构体，这是迄今为止报道的SWCNTs可分离物种的最大数量。凝胶柱层析技术具有工艺简单、成本低、效率高等优点，使研究人员能够从宏观上制备单结构单壁碳纳米管系综，全面揭示单壁碳纳米管的内在性质，促进其应用。
We report a gel column chromatography method for easily separating the optical isomers (i.e., left- and right-handed structures) of single-chirality carbon nanotubes. This method uses the difference in the interactions of the two isomers of a chiral single-wall carbon nanotube (SWCNT) with an allyl dextran-based gel, which result from the selective interaction of the chiral moieties of the gel with the isomers. Using this technique, we sorted optical isomers of nine distinct (n, m) single-chirality species from HiPco SWCNTs, which is the maximum number of isolable species of SWCNTs reported to date. Because of its advantages of technical simplicity, low cost, and high efficiency, gel column chromatography allows researchers to prepare macroscopic ensembles of single-structure SWCNTs and enables the complete discovery of intrinsic properties of SWCNTs and advances their application.