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Selective Recognition of Ni2+ Ion Based on Fluorescence Enhancement Chemosensor Publisher Pubmed



Ganjali MR1, 2 ; Hosseini M3 ; Motalebi M4 ; Sedaghat M1 ; Mizani F4 ; Faridbod F1 ; Norouzi P1, 2
Authors
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Authors Affiliations
  1. 1. Center of Excellence in Electrochemistry, Faculty of Chemistry, University of Tehran, Tehran, Iran
  2. 2. Biosensor Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
  3. 3. Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran
  4. 4. Department of Chemistry, Payame Noor University, PO Box 19395-3697, Tehran, Iran

Source: Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy Published:2015


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. © 2014 Elsevier B.V. All rights reserved.