Covalent functionalization of single-walled carbon nanotubes for materials applications
Covalent functionalization of single-walled carbon nanotubes for materials applications
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DOI：
10.1021/jp046274g
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发表时间：
2004-12-23
影响因子：
2.9
通讯作者：
Tour, JM
中科院分区：
文献类型：
--
作者：
Dyke, CA;Tour, JM
单壁碳纳米管（SWNTs）的共价功能化显著地扩展了纳米管结构的实用性。共价侧壁官能化已被用于增加这些材料的溶解度，这允许操纵和处理这些否则不溶性的纳米管。增加的溶解度导致在聚合物体系中更好的分散。可以选择性地进行官能化，其中金属SWNT比半导体反应更快。这使得碳纳米管可以按类型分离。共价侧壁官能化还允许形成基于纳米管的复合材料，其中官能团与聚合物基质良好混合。这导致弹性体的模量显著增加，同时保持其断裂伸长率特性。
Covalent functionalization of single-walled carbon nanotubes (SWNTs) has significantly expanded the utility of the nanotube structure. Covalent sidewall functionalization has been employed to increase the solubility of these materials, which allows for the manipulation and processing of these otherwise insoluble nanotubes. Increased solubility leads to better dispersion in polymeric systems. Functionalization can be performed selectively wherein the metallic SWNTs react faster than the semiconductors. This has allowed a separation of carbon nanotubes by type. Covalent sidewall functionalization also allows nanotube-based composite formation where the functional group is well mixed with the polymer matrix. This has led to dramatic increases in the modulus of elastomers while retaining their elongation-at-break properties.