Issue 4, 2010
From the journal:

Nanoscale

Synthesis of covalently attached hexadecaanilines on carbon nanotubes: toward electronic nanocarbon preparation†

Long Y. Chiang,*a   Robinson Anandakathir,a   Tanya S. Hauck,b   Lawrence Lee,b   Taizoon Canteenwala,a   Prashant A. Padmawar,a   Kenneth Pritzker,b   Ferdinando F. Brunoc  and  Lynne A. Samuelsonc  

* Corresponding authors

a Department of Chemistry, University of Massachusetts Lowell, Lowell, USA
E-mail: Long_Chiang@uml.edu

b Pathology and Laboratory Medicine, University of Toronto, Toronto, Canada

c U. S. Army RDECOM, Natick Soldier Center, Natick, USA

Abstract

We describe the direct covalent-grafting synthesis of well-defined aniline oligomers, such as tetraaniline (A4) and hexadecaaniline (A16, major)/eicosaaniline (A20, minor), on the sidewalls of carbon nanotubes (CNTs), via dediazonization reaction, for achieving highly soluble nanomaterials suitable for printing purposes, with long-term physical stability. Chemically grafting a layer of electroactive hexadecaanilines on CNTs resembles semiconductive encapsulation of functionalized CNTs. The resulting covalent nanoconjugates SWNT–(A4)x, MWNT–(A4)x, SWNT–(A16/20)x, and MWNT–(A16/20)x were characterized by various spectroscopic and microscopic mapping methods. The combination of transmission electron microscopy (TEM) and electron energy loss spectroscopy (EELS) analyses provided direct evidence for A16/20 attachment to the CNTs, giving confirmation of the presence of heteroatoms surrounding the CNTs that was absent in the parent CNTs. Subsequent atom mapping in the vicinity of the tube structure allowed us to illustrate the 3D distribution of heteroatoms along the CNT surface.

Graphical abstract: Synthesis of covalently attached hexadecaanilines on carbon nanotubes: toward electronic nanocarbon preparation

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Article information

DOI
https://doi.org/10.1039/B9NR00255C
Article type
Paper
Submitted
10 Sep 2009
Accepted
29 Nov 2009
First published
16 Jan 2010

Nanoscale, 2010,2, 535-541

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Synthesis of covalently attached hexadecaanilines on carbon nanotubes: toward electronic nanocarbon preparation

L. Y. Chiang, R. Anandakathir, T. S. Hauck, L. Lee, T. Canteenwala, P. A. Padmawar, K. Pritzker, F. F. Bruno and L. A. Samuelson, Nanoscale, 2010, 2, 535 DOI: 10.1039/B9NR00255C

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