Chiral Selective Dispersion of Arc-Discharged Single-Walled Carbon Nanotubes by Aromatic Polyimides with Pendent Triphenylamine Units
Chiral Selective Dispersion of Arc-Discharged Single-Walled Carbon Nanotubes by Aromatic Polyimides with Pendent Triphenylamine Units
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DOI：
10.1166/sam.2017.2558
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发表时间：
2017-02-01
影响因子：
0.9
通讯作者：
Lian, Yongfu
中科院分区：
文献类型：
--
作者：
Huang, Yao;Xiu, Shu;Lian, Yongfu
单壁碳纳米管（SWNTs）由于其独特的物理和化学性质，在许多领域显示出广阔的应用前景。通常，单壁碳纳米管作为具有不同导电性和不同手性的碳纳米管的混合物获得。因此，根据它们的手性对它们进行后分离是特别重要的。单壁碳纳米管由于其疏水性和大束的形成，在水和其他溶剂中难以溶解，限制了后续的分离以及各种实际应用。在这项研究中，一个芳香族聚酰亚胺与悬垂三苯胺单位是适用于形成一个稳定的分散的电弧放电单壁碳纳米管。拉曼光谱表明，半导体（19，0）单壁碳纳米管选择性地分散在N，N-二甲基甲酰胺与芳香族聚酰亚胺与三苯胺侧单元的帮助。
Because of their unique physical and chemical properties, single-walled carbon nanotubes (SWNTs) show a wide scope of prospective applications in many fields. Normally, SWNTs are obtained as a mixture of nanotubes with varying conductivity and different chirality. Thus, the post isolation of them in line with their chirality is of particular importance. SWNTs are hard to dissolve in water and other solvents owing to their hydrophobic property and their formation of large bundles, which restricts subsequent separation as well as a variety of practical applications. In this study, an aromatic polyimide with pendent triphenylamine units is applied to the formation of a stable dispersion of arc-discharged single-walled carbon nanotubes. Raman spectra demonstrate that semiconducting (19, 0) SWNTs are selectively dispersed in N,N-dimethyl formamide with the assistance of aromatic polyimides with pendent triphenylamine units.