title: A multi-channel sensor based on 8-hydroxyquinoline ferrocenoate for probing Hg(II) ion.
abstract: A new sensing molecule 8-hydroxyquinoline ferrocenoate (Fc-Q) which combines ferrocene and 8-hydroxyquinoline moieties was synthesized and applied as a multi-channel sensor for the detection of Hg(2+) ion. Fc-Q can coordinate with Hg(2+) to give colorimetric, fluorescent and electrochemical responses. Upon complexation with Hg(2+) ion, the characteristic absorption peak is red-shifted (Δλ=45 nm), the fluorescent intensity is quenched at 303 nm, and the oxidation peak is cathodic shifted (ΔE(1/2)=-149 mV). Quantitatively analyzed Hg(2+) ions at the range of ppb level could be achieved by electrochemical response. For the practical application of sensing Hg(2+) in real world water, Fc-Q modified screen-printed carbon electrodes were obtained for facile, sensitive, and on-site analysis of Hg(2+).
authors.affiliation: Shanghai Key Laboratory of Functional Materials Chemistry & Department of Chemistry, East China University of Science and Technology, 200237, Shanghai, PR China.
authors.forename: Lei
authors.initials: L
authors.lastname: Shi
authors.forename: Wei
authors.initials: W
authors.lastname: Song
authors.forename: Yang
authors.initials: Y
authors.lastname: Li
authors.forename: Da-Wei
authors.initials: DW
authors.lastname: Li
authors.forename: Kalen N
authors.initials: KN
authors.lastname: Swanick
authors.forename: Zhifeng
authors.initials: Z
authors.lastname: Ding
authors.forename: Yi-Tao
authors.initials: YT
authors.lastname: Long