Potential-Modulated Attenuated Total Reflectance Spectroscopy on Adsorbed Films on Indium Tin Oxide

Persistent Link:
http://hdl.handle.net/10150/193348
Title:
Potential-Modulated Attenuated Total Reflectance Spectroscopy on Adsorbed Films on Indium Tin Oxide
Author:
Ozkan, Zeynep
Issue Date:
2007
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
Potential modulated attenuated total reflectance (PM-ATR) spectroscopy is a novel technique that makes it possible to sensitively monitor spectroscopic changes in an adsorbed molecular film as a function of applied potential. Here, PM-ATR was used to study charge transfer processes in Prussian blue (PB) and cytochrome c (cyt c) films deposited on indium tin oxide (ITO) electrodes.The electron transfer rate of PB films determined by PM-ATR was found to be in good agreement with the rate determined by conventional cyclic voltammetry, which validates the optical technique.The relationship between molecular orientation and electron transfer in adsorbed cyt c monolayers was investigated using PM-ATR. The electron transfer rate measured using TM polarized light was four-fold greater than that measured using TE polarized light. These data are the first to correlate a distribution of molecular orientations with a distribution of electron transfer rates in a redox-active molecular film.
Type:
text; Electronic Thesis
Keywords:
spectroelectrochemistry; electroreflectance; thin films; electron transfer; molecular orientation
Degree Name:
MS
Degree Level:
masters
Degree Program:
Chemistry; Graduate College
Degree Grantor:
University of Arizona
Advisor:
Saavedra, Steven Scott
Committee Chair:
Saavedra, Steven Scott

Full metadata record

DC FieldValue Language
dc.language.isoENen_US
dc.titlePotential-Modulated Attenuated Total Reflectance Spectroscopy on Adsorbed Films on Indium Tin Oxideen_US
dc.creatorOzkan, Zeynepen_US
dc.contributor.authorOzkan, Zeynepen_US
dc.date.issued2007en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractPotential modulated attenuated total reflectance (PM-ATR) spectroscopy is a novel technique that makes it possible to sensitively monitor spectroscopic changes in an adsorbed molecular film as a function of applied potential. Here, PM-ATR was used to study charge transfer processes in Prussian blue (PB) and cytochrome c (cyt c) films deposited on indium tin oxide (ITO) electrodes.The electron transfer rate of PB films determined by PM-ATR was found to be in good agreement with the rate determined by conventional cyclic voltammetry, which validates the optical technique.The relationship between molecular orientation and electron transfer in adsorbed cyt c monolayers was investigated using PM-ATR. The electron transfer rate measured using TM polarized light was four-fold greater than that measured using TE polarized light. These data are the first to correlate a distribution of molecular orientations with a distribution of electron transfer rates in a redox-active molecular film.en_US
dc.typetexten_US
dc.typeElectronic Thesisen_US
dc.subjectspectroelectrochemistryen_US
dc.subjectelectroreflectanceen_US
dc.subjectthin filmsen_US
dc.subjectelectron transferen_US
dc.subjectmolecular orientationen_US
thesis.degree.nameMSen_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineChemistryen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorSaavedra, Steven Scotten_US
dc.contributor.chairSaavedra, Steven Scotten_US
dc.identifier.proquest2202en_US
dc.identifier.oclc659747316en_US
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