A Turn OFF Fluorescent Probe For Selective Detection Of Hg2+ Ions

Year 2019, Issue: 17, 483 - 490, 31.12.2019

Duygu Aydın

https://doi.org/10.31590/ejosat.634119

Cited By: 8

Abstract

In this study, we prepared a novel fluorescent chemosensor containing an imidazole molecule and the chemosensor characterized utilizing 1H-NMR, 13C-NMR spectroscopy, FT-IR spectrometer and elemental analyzer. Prepared sensor was utilized as an effectively selective and a fastly responsive chemical fluorescent sensor for ‘’turn off’’ determination of mercury (II) ions in EtOH. A clear complex between 2-((4-(1H-phenanthro[9,10-d] imidazol-2-yl)benzylidene)amino) phenol (PENIM) and Hg+ ions was determined and calculated employing the Job’s method and also the limit of detection value was found to be 2.1 nM on the basis of 3σ/k. Furthermore, the sensor-Hg2+ displayed and reversible property for mercapto containing cysteine molecules. Also, the fluorescence enhancement and quenching studies were supported by computational experiments based on the density functional theory (DFT) calculations.

Keywords

Fluorescence, Sensor, Mercury ions

Thanks

The author is grateful to the KMU Scientific Research Project Center for their support with the project numbers 30-M-16 and to provide the Gaussian 09W and Gauss view 5.0.8 programs.

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