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

• Published in: Journal 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
• Language: English
• 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

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...