title: Electrochemical behaviors of double-walled carbon nanotubes encapsulating ferrocene.
abstract: Electrochemical properties of a novel nanohybrid material, ferrocene-filled double-walled carbon nanotubes (Fc@DWNTs), have been successfully investigated for the first time by preparing different kinds of Fc@DWNTs modified glassy carbon electrodes. One pair of surface-confined redox waves corresponding to the couple of Fc/Fc+ is obtained, indicating Fc encapsulated in DWNTs retains electrochemical activity. Significantly differing from those of ferrocene-filled single-walled carbon nanotubes (Fc@SWNTs), Fc@DWNTs shows a specific electrochemical behavior, typically exhibiting thin-layer electrochemical characteristics at low scan rates, whereas diffusion-confined characteristics at high scan rates. The results indicate that the novel nanohybrid material possessing excellent electrochemical properties may have possible applications in constructing specific chemical and biological sensors.
authors.affiliation: Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, PR China.
authors.forename: Hanxun
authors.initials: H
authors.lastname: Qiu
authors.forename: Nijuan
authors.initials: N
authors.lastname: Sun
authors.forename: Meixian
authors.initials: M
authors.lastname: Li
authors.forename: Zujin
authors.initials: Z
authors.lastname: Shi
authors.forename: Jieshan
authors.initials: J
authors.lastname: Qiu
authors.forename: Zhennan
authors.initials: Z
authors.lastname: Gu
authors.forename: Junhe
authors.initials: J
authors.lastname: Yang