title: Silver and thallium(I) complexation with dibenzo-16-crown-4.
abstract: Dibenzo-16-crown-4 (1) indicates high silver and thallium(I) ion selectivity over sodium, potassium, and rubidium ion evaluated from the solvent extraction of metal picrates, while its cation-binding ability is lower than those of dibenzo-18-crown-6 (2) and dibenzo-22-crown-6 (3). Taking account of the highest thallium(I) ion selectivity for 1 obtained from extraction experiments, PVC membrane thallium(I)-selective electrodes based on 1 are prepared. The electrode shows the best potentiometric selectivity coefficients for thallium(I) over potassium and rubidium than those of 2 and 3, and commercially available bis(crown ether)s (4).
authors.affiliation: Department of Applied Chemistry, Faculty of Engineering, Himeji Institute of Technology, Hyogo, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Ouchi
authors.forename: Y
authors.initials: Y
authors.lastname: Shibutani
authors.forename: K
authors.initials: K
authors.lastname: Yakabe
authors.forename: T
authors.initials: T
authors.lastname: Shono
authors.forename: H
authors.initials: H
authors.lastname: Shintani
authors.forename: A
authors.initials: A
authors.lastname: Yoneda
authors.forename: T
authors.initials: T
authors.lastname: Hakushi
authors.forename: E
authors.initials: E
authors.lastname: Weber
mesh_terms: D043844:Crown Ethers; D004988:Ethers, Cyclic / Q000737:chemistry*; D017736:Ion-Selective Electrodes; D008567:Membranes, Artificial; D011143:Polyvinyl Chloride / Q000737:chemistry; D012834:Silver / Q000737:chemistry*; D012997:Solvents / Q000737:chemistry; D013793:Thallium / Q000737:chemistry*
chemical_list: D043844:Crown Ethers; D004988:Ethers, Cyclic; D008567:Membranes, Artificial; D012997:Solvents; C120950:dibenzo-16-crown-4; D012834:Silver; D011143:Polyvinyl Chloride; D013793:Thallium