title: A Reversible Pyrene-based Turn-on Luminescent Chemosensor for Selective Detection of Fe(3+) in Aqueous Environment with Logic Gate Application.
abstract: A new Schiff-base, HL luminescent chemosensor of 1-amino pyrene and 8-hydroxy quinoline-2-carboxaldehyde was synthesized which demonstrates selective fluorimetric detection of Fe(3+) in aqueous medium with detection limit of 2.52 × 10(-8) M. The receptor shows selective 'turn-on' response towards Fe(3+) over other metal ions. This gradual 'turn-on' fluorescence response for Fe(3+) may be induced via CHEF (chelation-enhanced fluorescence) through close proximity of pyrene rings. The stoichiometry and binding property of HL with Fe(3+) was examined by emission studies. In presence of Fe(3+), HL also exhibits reversible change in emission pattern with EDTA and thus offers an interesting property of molecular 'INHIBIT' logic gate with Fe(3+) and EDTA as chemical inputs.
authors.affiliation: Department of Environmental Science, University of Kalyani, Nadia, Kalyani, 741235, West Bengal, India. sommukh445@yahoo.co.in.
authors.forename: Soma
authors.initials: S
authors.lastname: Mukherjee
authors.affiliation: Department of Environmental Science, University of Kalyani, Nadia, Kalyani, 741235, West Bengal, India.
authors.forename: Shrabani
authors.initials: S
authors.lastname: Talukder
keywords: 1-amino pyrene; Chemosensor; Logic Gate; Luminescent; Reversible