Photostimulated Hole Transport through a DNA Duplex Immobilized on a Gold Electrode

Photostimulated hole transport through DNA duplexes immobilized on gold electrodes has been investigated. By modifying a gold electrode with a DNA duplex containing a photosensitizer, we have observed a sequence-dependent cathodic photocurrent. DNA acts as a good mediator for cathodic photocurrent w...

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Bibliographic Details
Published inJournal of the American Chemical Society Vol. 126; no. 45; pp. 14732 - 14733
Main Authors Okamoto, Akimitsu, Kamei, Taku, Tanaka, Kazuo, Saito, Isao
Format Journal Article
LanguageEnglish
Published Washington, DC American Chemical Society 17.11.2004
Subjects
Anthraquinones - chemistry
Biological and medical sciences
DNA - chemistry
Electrochemistry
Electrodes
Fundamental and applied biological sciences. Psychology
Gold - chemistry
Molecular biophysics
Nucleic Acid Conformation
Photochemistry
Photosensitizing Agents - chemistry
Physical chemistry in biology
Transport process
Electrode adsorption
Photoelectrochemical effect
Gold
Near ultraviolet radiation
Electrode electrolyte interface
Solid electrode
Nucleic acid
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Summary:Photostimulated hole transport through DNA duplexes immobilized on gold electrodes has been investigated. By modifying a gold electrode with a DNA duplex containing a photosensitizer, we have observed a sequence-dependent cathodic photocurrent. DNA acts as a good mediator for cathodic photocurrent when appropriate sequences are selected.
Bibliography:ark:/67375/TPS-NPCQMDNQ-F
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SourceType-Scholarly Journals-1
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ISSN:0002-7863
1520-5126
DOI:10.1021/ja0449067