Unzipping of Functionalized Multiwall Carbon Nanotubes Induced by STM

被引:48
作者
Paiva, M. Conceicao [1 ]
Xu, Wei [2 ,3 ,4 ]
Proenca, M. Fernanda [5 ]
Novais, Rui M. [1 ]
Laegsgaard, Erik [2 ,3 ]
Besenbacher, Flemming [2 ,3 ]
机构
[1] Univ Minho, Dept Polymer Engn, Inst Polymers & Composites I3N, P-4800058 Guimaraes, Portugal
[2] Aarhus Univ, Dept Phys & Astron, DK-8000 Aarhus C, Denmark
[3] Aarhus Univ, Interdisciplinary Nanosci Ctr iNANO, DK-8000 Aarhus C, Denmark
[4] Tongji Univ, Coll Mat Sci & Engn, Minist Educ,Shanghai Key Lab Metall Funct Mat, Key Lab Adv Civil Engn Mat, Shanghai 200092, Peoples R China
[5] Univ Minho, Dept Chem, P-4710057 Braga, Portugal
基金
欧洲研究理事会; 新加坡国家研究基金会;
关键词
Carbon nanotube; graphene; cycloaddition reaction; scanning tunneling microscopy; SCANNING-TUNNELING-MICROSCOPY; DIELS-ALDER CYCLOADDITION; SIDEWALL FUNCTIONALIZATION;
D O I
10.1021/nl100240n
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Carbon nanotubes (CNTs), functionalized by a cycloaddition reaction, were studied by ultrahigh vacuum scanning tunneling microscopy (STM). The STM images provided evidence for partial or total unzipping of the outer CNT layer. The formation of graphene ribbons was triggered by the STM tip, under specific operating conditions. A model for the unzipping is proposed, based on the perturbation of the pi-conjugation along the CNT surface induced by the cycloaddition reaction.
引用
收藏
页码:1764 / 1768
页数:5
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