Skip to main content

Research Repository

See what's under the surface

Advanced Search

Tailoring the electrochemical properties of carbon nanotube modified indium tin oxide via in situ grafting of aryl diazonium

Wong, Zhi Yi; Scurr, David J.; Silman, Nigel; Jackson, Simon K.; Mendes, Paula M.; Aylott, Jonathan W.; Rawson, Frankie J.; Hicks, Jacqueline

Authors

Zhi Yi Wong

David J. Scurr

Nigel Silman

Simon K. Jackson

Paula M. Mendes

Jonathan W. Aylott

Frankie J. Rawson

Jacqueline Hicks



Abstract

Our ability to tailor the electronic properties of surfaces by nanomodification is paramount for various applications, including development of sensing, fuel cell, and solar technologies. Moreover, in order to improve the rational design of conducting surfaces, an improved understanding of structure/function relationships of nanomodifications and effect they have on the underlying electronic properties is required. Herein, we report on the tuning and optimization of the electrochemical properties of indium tin oxide (ITO) functionalized with single-walled carbon nanotubes (SWCNTs). This was achieved by controlling in situ grafting of aryl amine diazonium films on the nanoscale which were used to covalently tether SWCNTs. The structure/function relationship of these nanomodifications on the electronic properties of ITO was elucidated via time-of-flight secondary ion mass spectrometry and electrochemical and physical characterization techniques which has led to new mechanistic insights into the in situ grafting of diazonium. We discovered that the connecting bond is a nitro group which is covalently linked to a carbon on the aryl amine. The increased understanding of the surface chemistry gained through these studies enabled us to fabricate surfaces with optimized electron transfer kinetics. The knowledge gained from these studies allows for the rational design and tuning of the electronic properties of ITO-based conducting surfaces important for development of various electronic applications.

Journal Article Type Article
Publication Date May 23, 2017
Journal Langmuir
Print ISSN 0743-7463
Electronic ISSN 1520-5827
Publisher American Chemical Society
Peer Reviewed Peer Reviewed
Volume 33
Issue 20
Pages 4924-4933
APA6 Citation Wong, Z. Y., Scurr, D. J., Silman, N., Jackson, S. K., Mendes, P. M., Aylott, J. W., …Hicks, J. (2017). Tailoring the electrochemical properties of carbon nanotube modified indium tin oxide via in situ grafting of aryl diazonium. Langmuir, 33(20), 4924-4933. https://doi.org/10.1021/acs.langmuir.7b00494
DOI https://doi.org/10.1021/acs.langmuir.7b00494
Publisher URL http://pubs.acs.org/doi/abs/10.1021/acs.langmuir.7b00494
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0
Additional Information Correction of funding acknowledgement by publisher in separate PDF: Langmuir 2017, 33, 14526-14526

Files

acs.langmuir.7b00494.pdf (2.5 Mb)
PDF

Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0


acs.langmuir.7b01995.pdf (258 Kb)
PDF

Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0





You might also like



Downloadable Citations

;