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The development of conductive elements for the selective detection of formaldehyde and cotinine / by Sadik Antwi-Boampong.

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Call No.	QD47.5.N43 D3 2013
Author	Antwi-Boampong, Sadik.
Title	The development of conductive elements for the selective detection of formaldehyde and cotinine / by Sadik Antwi-Boampong.
Date	2013
Abstract	The development of new materials and techniques presents an opportunity to revisit old problems. Innovations in materials engineering revolutionize the status quo by expanding the tool kit needed to develop robust solutions to complex problems. Challenges that had hitherto been intractable become surmountable previously established methods are significantly enhanced fresh impetus is injected into the materials design engine. In one way or another, every scientist contributes to this dynamic creative process where ideas are incubated and developed through fundamental research that culminates in compelling findings applicable in various realms of science. The work presented herein embodies this ethos. Our investigations have applied the relatively nascent technology of molecular imprinting to develop sensing elements for detection of cotinine and formaldehyde. Additionally, we have used different polymer systems to address the inherent limitations of conventional materials using a simple, cost-effective and efficient materials approach. Specifically, in Part I, we investigate molecular imprinting of nylon-6, polyvinylphenol and Elvamide®, with cotinine. We examine the capacity of these materials as polymer hosts for molecular imprinting by studying the effect of cotinine imprinting on their nanomechanical properties. By monitoring variations in mechanical properties induced by cotinine templating, we determine the factors critical for effective imprinting and ultimately demonstrate that polyvinylphenol is the most suitable polymer host. Based on these results, we develop a cotinine-imprinted polyvinylphenol-single walled carbon nanotube sensor that readily detects cotinine. Using electrical, spectral and chromatographic characterization, we rigorously demonstrate the enhanced affinity programmed into the sensing layer via molecular imprinting. Part II is dedicated to a familiar problem: formaldehyde sensing. While this challenge has been a trope of the electrochemical sensor industry for years, there stil
Description	xiii, 146 leaves : ill. (some col.) 28 cm.
Format	application/pdf
Advisor	Ivan Aprahamian, Joseph J. BelBruno, Robert Ditchfield, Ursula J. Gibson
College	Dartmouth College. Department of Chemistry.
Issuing Body	Dartmouth Dissertations are made available through the Dartmouth Digital Library.
Degree	Thesis (Ph.D.)--Dartmouth College.
Copyright	All rights reserved. No part of this book may be reproduced in any form by any electronic or mechanical means without permission in writing from the author.
DOI	http://dx.doi.org/10.1349/ddlp.935

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