title: A New Sensitive and Selective Off-On Fluorescent Zn2+Chemosensor Based on 3,3',5,5'-Tetraphenylsubstituted Dipyrromethene.
abstract: 3,3',5,5'-Tetraphenyl-2,2'-dipyrromethene was described as a highly sensitive and selective Off-on fluorescent colorimetric chemosensor for Zn2+based on the chelation-enhanced fluorescence (CHEF) effect. The reaction of dipyrromethene ligand with Zn2+induces the formation of the [ZnL2] complex, which exhibits the increasing fluorescence in 120 fold compared with ligand in the propanol-1/cyclohexane (1:30) binary mixture. The Zn2+detection limit was 1.4 × 10-7М. The UV-Vis and fluorescence spectroscopic studies demonstrated that the dipyrromethene sensor was highly selective toward Zn2+cations over other metal ions (Na+, Mg2+, Co2+, Ni2+, Fe3+, Cu2+, Mn2+, Cd2+and Pb2+), excluding Hg2+.
authors.affiliation: G. A. Krestov Institute of Solution Chemistry of Russian academy of Sciences 1 Akademicheskaya St., Ivanovo, Russia, 153045. nad@isc-ras.ru.
authors.forename: Natalia A
authors.initials: NA
authors.lastname: Bumagina
authors.affiliation: G. A. Krestov Institute of Solution Chemistry of Russian academy of Sciences 1 Akademicheskaya St., Ivanovo, Russia, 153045.
authors.forename: Elena V
authors.initials: EV
authors.lastname: Antina
authors.affiliation: Inorganic Chemistry Department, Ivanovo State University of Chemistry and Technology, 7 Sheremetevskij prosp, Ivanovo, Russia, 153000.
authors.forename: Anna Yu
authors.initials: AY
authors.lastname: Nikonova
authors.affiliation: G. A. Krestov Institute of Solution Chemistry of Russian academy of Sciences 1 Akademicheskaya St., Ivanovo, Russia, 153045.
authors.forename: Mikhail B
authors.initials: MB
authors.lastname: Berezin
authors.affiliation: G. A. Krestov Institute of Solution Chemistry of Russian academy of Sciences 1 Akademicheskaya St., Ivanovo, Russia, 153045.
authors.forename: Alexander A
authors.initials: AA
authors.lastname: Ksenofontov
authors.affiliation: G. A. Krestov Institute of Solution Chemistry of Russian academy of Sciences 1 Akademicheskaya St., Ivanovo, Russia, 153045.
authors.forename: Anatoly I
authors.initials: AI
authors.lastname: Vyugin
keywords: Dipyrromethene; Fluorescent chemosensor; Selectivity; Theoretical calculation; Zinc ion