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Permanent link (DOI): https://doi.org/10.7939/R3639KG7V

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Conductive Atomic Force Microscopy Study of Electron Transport Through Diazonium Derived Films and Mixed – Mode Bonded Layers on Gold and Carbon Surfaces Open Access

Descriptions

Other title
Subject/Keyword
current
film
Nitroazobenzene
layers
atomic
photoresist
self
mode
cp-AFM
thiol
cAFM
salts
SAM
template
monolayer
carbon
microscopy
Mixed
transport
voltage
surface
dodecanethiol
assembled
gold
pyrolized
force
stripped
bonded
AFM
electron
PPF
conductive
NAB
diazonium
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Reid, Michael S
Supervisor and department
McDermott, Mark (Chemistry)
Examining committee member and department
Freeman, Mark (Physics)
McCreery, Richard (Chemistry)
Department
Department of Chemistry
Specialization

Date accepted
2012-01-26T13:04:49Z
Graduation date
2012-06
Degree
Master of Science
Degree level
Master's
Abstract
For Molecular Electronics to become a viable replacement or complitment to current elec- tronic devices a fundamental understanding of device operation and functionality is needed. This work explores electron transport through diazonium derived molecular junctions via conductive atomic force microscopy to provide insight into the scalability of molecular de- vices. The attenuation coefficient and electron transport properties of nitroazobenzene on carbon; were found to be consistent with larger ensemble molecular junctions. Further, ap- plied force significantly decreased the resistance through the layer due to reduced tunneling distance and increased contact area. Electron transport through nitroazobenzene was ex- tended to gold surfaces and found to be in agreement with studies on carbon. Investigation of mixed-mode bonded layers of nitroazobenzene and dodecanethiol determined that surface coverage was controllable through solution concentration and sweep rate. Qualitatively it was observed that conductivity increased with nitroazobenzene coverage.
Language
English
DOI
doi:10.7939/R3639KG7V
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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