title: Detection of biologically important anions in aqueous media by dicationic azaborines bearing ammonio or phosphonio groups.
abstract: New cationic triarylboranes bearing ammonio or phosphonio groups on the periphery were synthesized from a common intermediate, a dibromodibenzoazaborine. These cationic molecules are soluble in highly polar organic solvents as well as water, and they exhibit strong light absorption and photoluminescence emission in water. Complexation of the cationic azaborines with fluoride and cyanide ions in aqueous media proceeded and could be monitored by NMR, UV/Vis, and fluorescence spectroscopy.
authors.affiliation: Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Agou
authors.forename: Masaki
authors.initials: M
authors.lastname: Sekine
authors.forename: Junji
authors.initials: J
authors.lastname: Kobayashi
authors.forename: Takayuki
authors.initials: T
authors.lastname: Kawashima