Issue 37, 2011

Chemical mapping and electrical conductivity of carbon nanotube patterned arrays

Abstract

Micron-scale conductive planar arrays were fabricated by assembly of carbon nanotube (CNT)/polydiallyl dimethyl ammonium chloride (PDADMAC) thin films on interdigitated patterns using a layer-by-layer (LbL) deposition process from aqueous solution. The LbL hybrid film was assembled on a quaternized surface pattern of (3-aminopropyl)trimethoxysilane (APTMS), which was defined on a Si wafer substrate using microcontact printing or drop coating onto a patterned lithographic resist. Deposition of the CNT/polymer bilayers was shown to be limited to the quaternized APTMS regions as confirmed by Raman microspectroscopic mapping, optical and atomic force microscopy, and electrical probe measurements. Patterns of three, five, and eight bilayers had conductivities ranging from 57–264 S cm−1 for the hybrid structures, depending on number of bilayers and measurement technique, which agreed with other reported values for CNT/polymer thin film composites with high loadings of CNTs.

Graphical abstract: Chemical mapping and electrical conductivity of carbon nanotube patterned arrays

Supplementary files

Article information

Article type
Paper
Submitted
15 Mar 2011
Accepted
05 May 2011
First published
15 Jun 2011

J. Mater. Chem., 2011,21, 14259-14264

Chemical mapping and electrical conductivity of carbon nanotube patterned arrays

M. L. Gross, K. R. Zavadil and M. A. Hickner, J. Mater. Chem., 2011, 21, 14259 DOI: 10.1039/C1JM11107H

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