title: Novel dithieno-benzo-imidazole-based Pb2+ sensors: substituent effects on sensitivity and reversibility.
abstract: Two novel dithieno-benzo-imidazole-based compounds (M2 and A2) showed remarkable sensitivities towards Pb(2+) by 12-fold enhancement and 10-fold decay of fluorescence, respectively, in aqueous solutions. Substituent effects of different dithieno-benzo-imidazole-based moieties (M1, M2, A1 and A2) on the quantum yields, fluorescence lifetimes and sensitivities to Pb(2+) along with the reversibilities by S(2-) were investigated.
authors.affiliation: Department of Materials Science and Engineering, National Chiao Tung University, Hsinchu 30049, Taiwan, ROC.
authors.forename: Rudrakanta
authors.initials: R
authors.lastname: Satapathy
authors.forename: Yen-Hsing
authors.initials: YH
authors.lastname: Wu
authors.forename: Hong-Cheu
authors.initials: HC
authors.lastname: Lin
mesh_terms: D001555:Benzene Derivatives / Q000737:chemistry*; D002413:Cations, Divalent / Q000032:analysis*; D007093:Imidazoles / Q000737:chemistry*; D007854:Lead / Q000032:analysis*; D012680:Sensitivity and Specificity; D013050:Spectrometry, Fluorescence / Q000379:methods*
chemical_list: D001555:Benzene Derivatives; D002413:Cations, Divalent; D007093:Imidazoles; D007854:Lead