title: Synthesis and properties of DNA complexes containing 2,2,6,6-tetramethyl-1-piperidinoxy (TEMPO) moieties as organic radical battery materials.
abstract: We report here the first example of organic radical battery with DNA. Though there is a growing interest in DNA/cationic-lipid complexes as promising gene delivery vehicles, few efforts have been focused on the use of such complexes as advanced materials for organic optoelectronic applications. The present article describes how substitution of the sodium counter cation of DNA with cationic amphiphilic lipid(1-4) provided novel DNA-lipid complexes that contain TEMPO radicals, in which the actual mole ratio of phosphate to lipid was 1:0.84 to 1:0.16. All the TEMPO-containing DNA-lipid complexes displayed reversible two-stage charge/discharge processes, the discharge capacities of which were 40.5-60.0 A h kg(-1). In particular, the capacity of a DNA-lipid(3)-based cell reached 60.0 A h kg(-1), which corresponds to 192 % relative to its theoretical value for the single-electron one-stage process, indicating a two-electron process.
authors.affiliation: Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura Campus, Kyoto, Japan.
authors.forename: Jinqing
authors.initials: J
authors.lastname: Qu
authors.forename: Ryuhei
authors.initials: R
authors.lastname: Morita
authors.forename: Masaharu
authors.initials: M
authors.lastname: Satoh
authors.forename: Jun
authors.initials: J
authors.lastname: Wada
authors.forename: Fumiaki
authors.initials: F
authors.lastname: Terakura
authors.forename: Kenji
authors.initials: K
authors.lastname: Mizoguchi
authors.forename: Naoya
authors.initials: N
authors.lastname: Ogata
authors.forename: Toshio
authors.initials: T
authors.lastname: Masuda
mesh_terms: D002942:Circular Dichroism; D003497:Cyclic N-Oxides / Q000737:chemistry*; D004247:DNA / Q000737:chemistry*; D004563:Electrochemistry; D008055:Lipids / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D013055:Spectrophotometry, Infrared
chemical_list: D003497:Cyclic N-Oxides; D008055:Lipids; D004247:DNA; C003959:TEMPO