title: Efficient electron transfer in i-motif DNA with a tetraplex structure.
abstract: Electron transfer through DNA: The electron-transfer dynamics of i-motif DNA conjugated with pyrene (Py) and anthraquinone (AQ) has been investigated by fluorescence up-conversion and transient absorption spectroscopic methods. Electron transfer (see red arrows) in i-motif DNA is more efficient than in duplex DNA, suggesting that i-motif DNA can be used as electron carrier in nanoelectronic devices.
authors.affiliation: The Institute of Scientific and Industrial Research (SANKEN), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567-0047 (Japan). jkchoi@sanken.osaka-u.ac.jp.
authors.forename: Jungkweon
authors.initials: J
authors.lastname: Choi
authors.forename: Atsushi
authors.initials: A
authors.lastname: Tanaka
authors.forename: Dae Won
authors.initials: DW
authors.lastname: Cho
authors.forename: Mamoru
authors.initials: M
authors.lastname: Fujitsuka
authors.forename: Tetsuro
authors.initials: T
authors.lastname: Majima
mesh_terms: D004247:DNA / Q000737:chemistry* / Q000378:metabolism; D004579:Electron Transport; D059372:Nucleotide Motifs; D010084:Oxidation-Reduction; D013057:Spectrum Analysis
chemical_list: D004247:DNA
keywords: DNA; charge separation; electron transfer; fluorescence up-conversion; molecular devices