title: A Fluorescent Sensor for Al(III) and Colorimetric Sensor for Fe(III) and Fe(II) Based on a Novel 8-Hydroxyquinoline Derivative.
abstract: A novel 8-hydroxyquinoline-based fluorescent and colorimetric chemosensor was designed, synthesized and fully characterized. The sensor showed high selectivity and sensitivity toward Al(3+) over other tested cations in EtOH/H2O (1:99, v/v) medium. The increase in fluorescence intensity was linearly proportional to the concentration of Al(3+) with a detection limit of 7.38 × 10(-6) M. Moreover, the sensor exhibited an obvious color change from yellow to black in the presence of Fe(2+) and Fe(3+) in EtOH/THF (99:1, v/v) solution. The absorbance changes showed a linear response to iron ions with the detection limits of 4.24 × 10(-7) M and 5.60 × 10(-7) M for Fe(2+) and Fe(3+), respectively. Thus, this chemosensor provides a novel approach for selectively recognition of Al(3+), Fe(3+) and Fe(2+) among environmentally relevant metal ions.
authors.affiliation: School of Chemistry, College of Science, University of Tehran, Tehran, Iran.
authors.forename: Negar
authors.initials: N
authors.lastname: Lashgari
authors.affiliation: School of Chemistry, College of Science, University of Tehran, Tehran, Iran. abadiei@khayam.ut.ac.ir.|Nanobiomedicine Center of Excellence, Nanoscience and Nanotechnology Research Center, University of Tehran, Tehran, Iran. abadiei@khayam.ut.ac.ir.
authors.forename: Alireza
authors.initials: A
authors.lastname: Badiei
authors.affiliation: Department of Chemistry, Alzahra University, Tehran, Iran.
authors.forename: Ghodsi
authors.initials: G
authors.lastname: Mohammadi Ziarani
keywords: 8-hydroxyquinoline; Aluminum ion; Colorimetric chemosensor; Fluorescent sensor; Iron; Isatin