title: Furan and Julolidine-Based "Turn-on" Fluorescence Chemosensor for Detection of F-in a Near-Perfect Aqueous Solution.
abstract: A new fluorescent sensor 1, containing furan and julolidine moieties linked through a Schiff-base, has been synthesized. Distinct "turn-on" fluorescence enhancement of 1 was observed upon the addition of F-in a near-perfect aqueous solution. The binding capabilities of 1 with F-were studied by using fluorescent spectroscopic techniques, ESI-mass analysis and NMR titration measurements. The detection limit for the analysis of F-was found to be 10.02 μM, which is below the WHO guideline (79 μM) for drinking water. Practically, the sensing ability of 1 for F-was successfully applied in real water samples. The sensing mechanism for F-was proposed to be the ICT mechanism via the hydrogen bonding, which was well explained by theoretical calculations.
authors.affiliation: Department of Fine Chemistry and Department of Interdisciplinary Bio IT Materials, Seoul National University of Science and Technology, Seoul, 139-743, South Korea.
authors.forename: Ha Young
authors.initials: HY
authors.lastname: Jeong
authors.affiliation: Department of Fine Chemistry and Department of Interdisciplinary Bio IT Materials, Seoul National University of Science and Technology, Seoul, 139-743, South Korea.
authors.forename: Seong Youl
authors.initials: SY
authors.lastname: Lee
authors.affiliation: Department of Fine Chemistry and Department of Interdisciplinary Bio IT Materials, Seoul National University of Science and Technology, Seoul, 139-743, South Korea. chealkim@seoultech.ac.kr.
authors.forename: Cheal
authors.initials: C
authors.lastname: Kim
keywords: Fluoride; Fluorometric; Furan; Julolidine; Theoretical calculations