Unzipping of functionalized multiwall carbon nanotubes Induced by STM

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 spe...

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Bibliographic Details
Main Author: Paiva, M. C. (author)
Other Authors: Xu, Wei (author), Proença, M. Fernanda R. P. (author), Novais, R. M. (author), Laegsgaard, E. (author), Besenbacher, F. (author)
Format: article
Language:eng
Published: 2010
Subjects:
Carbon nanotube
Graphene
Cycloaddition reaction
Scanning tunneling microscopy
Grapheme
Science & Technology
Online Access:http://hdl.handle.net/1822/12908
Country:Portugal
Oai:oai:repositorium.sdum.uminho.pt:1822/12908
Description
Summary: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 π-conjugation along the CNT surface induced by the cycloaddition reaction.

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