title: Catalytic behavior of tris(2,2'-bipyridine)iron(II) complex in chemiluminescence reaction of luminol in reversed micellar medium of cetyltrimethylammonium chloride.
abstract: Tris(2,2'-bipyridine) complex of iron(II) was found to cause an increase in the chemiluminescence (CL) emission of luminol dispersed in the reversed micellar medium of cetyltrimethylammonium chloride (CTAC) in 1:1 (v/v) dichloromethane-cyclohexane/water, when the iron(II) complex in dichloromethane was mixed directly with the reversed micellar solution containing luminol. Visible absorption measurements showed that, when dispersed in the CTAC reversed micellar medium, the iron(II) complex dissociates easily. In the reverse micelle, subsequently the free iron(II) ion produced may catalyze the CL oxidation of luminol even in the absence of hydrogen peroxide. The CL emission produced under the optimized experimental conditions was detectable at a minimum iron(II) concentration of 1.0 x 10(-9) M using a flow injection system.
authors.affiliation: Department of Chemistry, Graduate School of Science, Hiroshima University, Kagamiyama, Higashi-Hiroshima 739-8526, Japan. tfuji@sci.hiroshima-u.ac.jp <tfuji@sci.hiroshima-u.ac.jp>
authors.forename: Terufumi
authors.initials: T
authors.lastname: Fujiwara
authors.forename: Imdad U
authors.initials: IU
authors.lastname: Mohammadzai
authors.forename: Keizo
authors.initials: K
authors.lastname: Kitayama
authors.forename: Yoshimoto
authors.initials: Y
authors.lastname: Funazumi
authors.forename: Takahiro
authors.initials: T
authors.lastname: Kumamaru