Diameter effect on the sidewall functionalization of single-walled carbon nanotubes by addition of dichlorocarbene
Author
Zhang, Kang
Zhang, Qing
Liu, Cao
Marzari, Nicola
Stellacci, Francesco
Date of Issue
2012School
School of Electrical and Electronic Engineering
Abstract
Dichlorocarbene is added to the sidewalls of single-walled carbon nanotubes (SWNTs) with diameters ranging from 1.2 to 2.2 nm. Small diameter SWNTs are found to react much more easily than large diameter SWNTs. Upon functionalization, the conductance could be largely preserved for almost all SWNTs, while an effective bandgap increase for functionalized metallic SWNTs (m-SWNTs) and a bandgap reduction for functionalized semiconducting SWNTs (s-SWNTs) are generally observed. The results suggest that [2 + 1] cycloaddition is an excellent choice of processing, resulting in SWNTs over a large diameter range with electronic properties that are almost unaffected. Furthermore, possible separation of SWNTs according to their diameters could be achieved due to the apparent diameter-dependent reactivity.
Subject
DRNTU::Engineering::Electrical and electronic engineering
Type
Journal Article
Series/Journal Title
Advanced functional materials
Rights
© 2012 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.
Collections
http://dx.doi.org/10.1002/adfm.201201777
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