title: Selective recognition of Ni2+ ion based on fluorescence enhancement chemosensor.
abstract: A new enhancing fluorescent chemosensor was introduced for selective and sensitive determination of nickel ions based on 2-(1-H-benzo[d]imidazol-2yl)-N-phenyl hydrazine carbothioamide (L). L has an intrinsic fluorescent emission which enhances in presence of nickel ions in CH3CN/H2O (70:30, v/v) solution. The fluorescence enhancement of L is attributed to a 1:1 complex formation between L and Ni2+ ion which has been used for selective detection of Ni2+ ion. At the optimum conditions, the fluorescence intensity of L at 352 nm enhances linearly by the concentration of nickel ion from 1.6×10(-5) to 1.6×10(-7) M and detection limit of 7.9×10(-8) M. The new fluorescent probe exhibited high selectivity to Ni2+ ion over the other common mono, di-and trivalent cations.
authors.affiliation: Center of Excellence in Electrochemistry, Faculty of Chemistry, University of Tehran, Tehran, Iran; Biosensor Research Center, Endocrinology & Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran. Electronic address: ganjali@khayam.ut.ac.ir.
authors.forename: M R
authors.initials: MR
authors.lastname: Ganjali
authors.affiliation: Department of life Science Engineering, Faculty of New Sciences & Technologies, University of Tehran, Tehran, Iran.
authors.forename: M
authors.initials: M
authors.lastname: Hosseini
authors.affiliation: Department of Chemistry, Payame Noor University, PO Box 19395-3697, Tehran, Iran.
authors.forename: M
authors.initials: M
authors.lastname: Motalebi
authors.affiliation: Center of Excellence in Electrochemistry, Faculty of Chemistry, University of Tehran, Tehran, Iran.
authors.forename: M
authors.initials: M
authors.lastname: Sedaghat
authors.affiliation: Department of Chemistry, Payame Noor University, PO Box 19395-3697, Tehran, Iran.
authors.forename: F
authors.initials: F
authors.lastname: Mizani
authors.affiliation: Center of Excellence in Electrochemistry, Faculty of Chemistry, University of Tehran, Tehran, Iran.
authors.forename: F
authors.initials: F
authors.lastname: Faridbod
authors.affiliation: Center of Excellence in Electrochemistry, Faculty of Chemistry, University of Tehran, Tehran, Iran; Biosensor Research Center, Endocrinology & Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran.
authors.forename: P
authors.initials: P
authors.lastname: Norouzi
mesh_terms: D002413:Cations, Divalent / Q000032:analysis; D005453:Fluorescence; D005456:Fluorescent Dyes / Q000737:chemistry*; D057230:Limit of Detection; D009532:Nickel / Q000032:analysis*; D010659:Phenylhydrazines / Q000737:chemistry*; D013050:Spectrometry, Fluorescence / Q000379:methods; D013854:Thioamides / Q000737:chemistry*; D062065:Wastewater / Q000032:analysis; D014867:Water / Q000032:analysis
chemical_list: D002413:Cations, Divalent; D005456:Fluorescent Dyes; D009532:Nickel; D010659:Phenylhydrazines; D013854:Thioamides; D062065:Wastewater; D014867:Water
keywords: Enhancement; Fluorescence; Nickel; Selective Ion Recognition; Sensor