BK21 Physics Division, Department of Energy Science, and Center for Nanotubes and Nanostructured Composites, Sungkyunkwan Advanced Institute of Nanotechnology, Sungkyunkwan University (SKKU), Suwon 440-746, Korea.
ACS Nano. 2010 Nov 23;4(11):6998-7004. doi: 10.1021/nn102175h. Epub 2010 Oct 14.
We propose bis(trifluoromethanesulfonyl)imide (CF(3)SO(2))(2)N (TFSI) as a transparent strong electron-withdrawing p-type dopant in carbon nanotubes (CNTs). The conventional p-dopant, AuCl(3), has several drawbacks, such as hygroscopic effect, formation of Au clusters, decrease in transmittance, and high cost in spite of the significant increase in conductivity. TFSI is converted from bis(trifluoromethanesulfonyl)amine (TFSA) by accepting electrons from CNTs, subsequently losing a proton as a characteristic of a Brønsted acid, and has an inductive effect from atoms with high electronegativity, such as halogen, oxygen, and nitrogen. TFSI produced a similar improvement in conductivity to AuCl(3), while maintaining high thermal stability, and no appreciable change in transmittance with no cluster formation. The effectiveness of TFSI was compared with that of other derivatives.
我们提出双（三氟甲烷磺酰基）亚胺 (CF(3)SO(2))(2)N (TFSI) 作为碳纳米管 (CNT) 中的透明强吸电子 p 型掺杂剂。传统的 p 型掺杂剂 AuCl(3) 存在许多缺点，例如吸湿性、形成 Au 团簇、透光率降低以及尽管导电性显著增加但成本高。TFSI 通过从 CNT 接受电子从双（三氟甲烷磺酰基）胺 (TFSA) 转化而来，随后作为布朗斯台德酸的特征失去一个质子，并且具有来自高电负性原子（如卤素、氧和氮）的诱导效应。TFSI 产生了类似于 AuCl(3) 的导电性改善，同时保持了高热稳定性，并且没有形成团簇的情况下透光率没有明显变化。TFSI 的有效性与其他衍生物进行了比较。
