Department of Electronic Engineering, Tohoku University, Sendai 980-8579, Japan.
ACS Nano. 2010 Jun 22;4(6):3522-6. doi: 10.1021/nn100745a.
Our study demonstrates that the C(69)N azafullerene can be encapsulated inside single-walled carbon nanotubes (SWNTs), which is confirmed by TEM, UV-vis-IR spectroscopy, Raman spectroscopy, and UPS. The electrical transport properties of SWNTs are found to change drastically due to the encapsulated C(69)N azafullerene. Our experimental results indicate that C(69)N encapsulated SWNTs show the high-performance n-type behavior compared with p-type characteristics of pristine SWNTs and C(70) encapsulated SWNTs. This n-type transport characteristic can be explained by the charge transfer effect between SWNTs and encapsulated C(69)N, which can easily lose an electron. The unique electronic properties of C(69)N encapsulated SWNTs make them potentially useful in many applications in engineering functional nanodevices.
我们的研究表明,C(69)N 氮杂富勒烯可以被包裹在单壁碳纳米管(SWNTs)内部,这一事实通过 TEM、UV-vis-IR 光谱、拉曼光谱和 UPS 得到了证实。由于被包裹的 C(69)N 氮杂富勒烯,SWNTs 的电导性能发生了显著的变化。我们的实验结果表明,与原始的 SWNTs 和 C(70)包裹的 SWNTs 的 p 型特性相比,C(69)N 包裹的 SWNTs 表现出了高性能的 n 型行为。这种 n 型输运特性可以通过 SWNTs 和被包裹的 C(69)N 之间的电荷转移效应来解释,因为 C(69)N 氮杂富勒烯很容易失去一个电子。C(69)N 包裹的 SWNTs 的独特电子特性使它们在工程功能纳米器件的许多应用中具有潜在的用途。