A Long Wavelength Excitable Fluorophore; Chloro Phenyl Imino Propenyl Aniline (CPIPA) for Selective Sensing of Hg (II) |
| |
Authors: | Kadriye Ertekin Ozlem Oter Mustafa Ture Serpil Denizalti and Engin Cetinkaya |
| |
Institution: | (1) Faculty of Arts and Sciences, Department of Chemistry, University of Dokuz Eylul, 35160, Tinaztepe, Izmir, Turkey;(2) Faculty of Sciences, Department of Chemistry, University of Ege, 35100, Bornova, Izmir, Turkey;(3) Present address: Dokuz Eylul Universitesi Fen-Edebiyat Fakultesi, Kimya Bolumu, 35160, Tinaztepe Buca, Izmir, Turkey |
| |
Abstract: | In this study, a very sensitive and highly selective irreversible optical chemical sensor (optode) for mercury ions was described.
The sensing scheme was based on the interaction of Hg (II) with a newly synthesized fluoroionophore; chloro phenyl imino propenyl
aniline (CPIPA) in plasticized PVC membrane. The sensor membranes were tested for the determination of mercury ion in aqueous
solutions by batch and flow-through methods. The optodes allow determination of Hg (II) in the working range of 1.0 × 10−9–1.0 × 10−5 M with a detection limit of 4.3 ppb. The sensor exhibited excellent selectivity for Hg (II) with respect to several common
alkali, alkaline earth and transition metal ions. The association constant of the 1:1 complex formation for Hg (II) was found
to be Ka = 1.86 × 105 M−1. The CPIPA exhibited high fluorescence quantum yield, long excitation and emission wavelength and high Stokes’ shift values
in the solid matrix which makes it compatible with solid state optics. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|