在单壁碳纳米管内部生成的一维金属富勒烯晶体。

One-dimensional metallofullerene crystal generated inside single-walled carbon nanotubes.

作者信息

Hirahara K, Suenaga K, Bandow S, Kato H, Okazaki T, Shinohara H, Iijima S

机构信息

Japan Science and Technology Corporation, Faculty of Science and Technology, Meijo University, Tenpaku-ku, Nagoya 468-8502, Japan.

出版信息

Phys Rev Lett. 2000 Dec 18;85(25):5384-7. doi: 10.1103/PhysRevLett.85.5384.

DOI:10.1103/PhysRevLett.85.5384

PMID:11136002

Abstract

Electron microscope imaging for gadolinium metallofullerenes encapsulating in single-wall carbon nanotubes [(Gd@C82)n@SWNTs] identifies the single Gd atom encaged in each. The intermolecular distance between Gd@C82 is extremely regular, regarding the chains of Gd@C82 as novel one-dimensional crystals. Chemical state analysis of Gd atoms suggests evidence for charge transfer from Gd to either a fullerene cage or a nanotube. The slopes of the temperature dependence of electric resistance for the mat-like films of (Gd@C82)n@SWNTs and (C60)n@SWNTs are much steeper than that for empty SWNTs, suggesting the electron scattering due to the electrostatic potential from inside fullerenes playing an important role.

摘要

对封装在单壁碳纳米管中的钆金属富勒烯[（Gd@C82）n@SWNTs]进行电子显微镜成像，可识别出每个碳纳米管中包裹的单个钆原子。Gd@C82之间的分子间距离极其规则，将Gd@C82链视为新型一维晶体。钆原子的化学状态分析表明存在从钆到富勒烯笼或纳米管的电荷转移证据。（Gd@C82）n@SWNTs和（C60）n@SWNTs的毡状薄膜电阻随温度变化的斜率比空的单壁碳纳米管的斜率陡得多，这表明富勒烯内部静电势引起的电子散射起了重要作用。