Two-Dimensional Coalescence Dynamics of Encapsulated Metallofullerenes in Carbon Nanotubes

被引：34

作者：

Allen, Christopher S. ^{[1
]}

Ito, Yasuhiro ^{[1
]}

Robertson, Alex W. ^{[1
]}

Shinohara, Hisanori ^{[2
]}

Warner, Jamie H. ^{[1
]}

机构：

[1] Univ Oxford, Dept Mat, Oxford OX1 3PH, England

[2] Nagoya Univ, Dept Chem, Nagoya, Aichi 4648602, Japan

来源：

ACS NANO | 2011年 / 5卷 / 12期

基金：

英国工程与自然科学研究理事会;

关键词：

peapods; fullerenes; carbon nanotube; HRTEM; coalescence; aberration-corrected; FULLERENE COALESCENCE; CHAINS;

D O I：

10.1021/nn204003h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report on the coalescence of a two dimensional (2D) chain of La@C-82 metallofullerene molecules encapsulated Inside a single-wall carbon nanotube (SWNT). 2D packing of metallofullerenes is known to adopt a zigzag arrangement and cause elliptical distortion to the cross-section of the SWNT host. We show that after coalescence of the metallofullerenes Into an inner nanotube the carbon nanotube host returns to its original circular cross-section. This is due to a relaxation of the strain caused by the packing of the encapsulated La@C-82 molecules into the nanotube. We identify the formation of some novel but transient fullerene-based structures formed during the intermediate stages of coalescence of the La@C-82 into an inner nanotube. These results highlight the flexible nature of SWNTs and their ability to adapt their cross-sectional profile depending upon forces induced by material encapsulated within.

引用

页码：10084 / 10089

页数：6

共 24 条

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