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Measurements and Control of Charge Transport through Single DNA Molecules via STM Break Junction Technique


Abstract Charge transport in molecular systems, including DNA (Deoxyribonucleic acid), is involved in many basic chemical and biological processes. Studying their charge transport properties can help developing DNA based electronic devices with many tunable functionalities. This thesis investigates the electric properties of double-stranded DNA, DNA G-quadruplex and dsDNA with modified base.

First, double-stranded DNA with alternating GC sequence and stacked GC sequence were measured with respect to length. The resistance of DNA sequences increases linearly with length, indicating a hopping transport mechanism. However, for DNA sequences with stacked GC, a periodic oscillation is superimposed on the linear length dependence, indicating a partial co... (more)
Created Date 2016
Contributor Xiang, Limin (Author) / Tao, Nongjian (Advisor) / Lindsay, Stuart (Committee member) / Gould, Ian (Committee member) / Arizona State University (Publisher)
Subject Chemistry / Charge Transport/Transfer / DNA / Molecular Electronics / Scanning Tunneling Microscopy / Single Molecular Conductance
Type Doctoral Dissertation
Extent 154 pages
Language English
Copyright
Reuse Permissions All Rights Reserved
Note Doctoral Dissertation Chemistry 2016
Collaborating Institutions Graduate College / ASU Library
Additional Formats MODS / OAI Dublin Core / RIS


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Description Dissertation/Thesis