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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/4937

Title: Electrochemical characterization of mixed self-assembled films of water-soluble single-walled carbon nanotube-poly(m-aminobenzene sulfonic acid) and Iron(II) tetrasulfophthalocyanine
Authors: Agboola, BO
Pillay, J
Makgopa, K
Ozoemena, KI
Keywords: Water soluble single walled carbon nanotube-poly(m-aminobenzene sulfonic acid)
Iron
Tetrasulfophthalocyanine
Phthalocyanine
Redox activity
Monolayer
Voltammetry
Ipedance spectroscopy
Electrochemicals
Issue Date: Sep-2010
Publisher: Electrochemical Society
Citation: Agboola, BO, Pillay, J, Makgopa, K and Ozoemena, KI. 2010. Electrochemical characterization of mixed self-assembled films of water-soluble single-walled carbon nanotube-poly(m-aminobenzene sulfonic acid) and Iron(II) tetrasulfophthalocyanine. Journal of The Electrochemical Society, Vol. 157(11), pp F159-F166
Abstract: The redox activities of water-soluble iron(II) tetrasulfophthalocyanine (FeTSPc) and single-walled carbon nanotube-poly(m-aminobenzene sulfonic acid) (SWCNT-PABS) adsorbed on a gold surface precoated with a self-assembled monolayer (SAM) of 2-dimethylaminoethanethiol (DMAET) have been described. Atomic force microscopy, cyclic voltammetry, and electrochemical impedance spectroscopy were employed to probe the buildup and formation of their thin solid films on the gold surface. The solid films exhibited excellent electrochemical stability. The electrode based on the mixed hybrids (Au-DMAET-SWCNT-PABS/FeTSPc) exhibited the fastest electron transport (ko0.4 cm s-1) compared to other electrodes (~0.2 cms-1), suggesting the ability of the SWCNT-PABS to act as efficient conducting species that facilitate electron transport between the integrated FeTSPc and the underlying gold substrate. Given the paucity of literature in the SAMs of water-soluble phthalocyanine complexes, the proposed fabrication strategy could potentially be extended to other water-soluble metallophthalocyanines and related organometallic complexes
Description: Copyright: 2010 Electrochemical Society
URI: http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JESOAN00015700001100F159000001&idtype=cvips&gifs=yes&ref=no
http://hdl.handle.net/10204/4937
ISSN: 0013-4651
Appears in Collections:Nanotechnology
General science, engineering & technology

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