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首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >Diameter-Selective Fractionation of HiPco Single-Walled Carbon Nanotubes in Repeated Functionalization Reactions
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Diameter-Selective Fractionation of HiPco Single-Walled Carbon Nanotubes in Repeated Functionalization Reactions

机译：重复功能化反应中HiPco单壁碳纳米管的直径选择性分级分离

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摘要

The functionalization reaction of the diamine-terminated oligomeric poly(ethylene glycol) with a purified HiPco single-walled carbon nanotube sample was repeated multiple times to yield the corresponding number of soluble fractions and the final insoluble residue. According to results from the characterization with various instrumental techniques, these soluble fractions and the final residue all have different nanotube diameter distributions from that found in the starting sample. A general conclusion is that the functionalization and solubilization are selective toward smaller diameter nanotubes, regardless of their being semiconducting or metallic. Mechanistic implications, especially with respect to the post-production separation in terms of the nanotube metallicity, are discussed.
机译：重复两次将二胺封端的低聚聚乙二醇与纯化的HiPco单壁碳纳米管样品进行官能化反应，以产生相应数量的可溶级分和最终的不溶残基。根据各种仪器技术表征的结果，这些可溶性部分和最终残留物均具有与起始样品不同的纳米管直径分布。总的结论是，官能化和增溶对较小直径的纳米管是选择性的，而不管它们是半导体的还是金属的。讨论了机械含义，特别是就纳米管金属性而言的生产后分离方面。

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