Flourogenic Chemo-Sensor-Based Sensing of Heavy Metal ion by Using Gold Coated Lower Rim Amino Functionalized Calix  areneJournal: International Journal of Science and Research (IJSR) (Vol.9, No. 6)
Publication Date: 2020-06-05
Authors : Upinder; J. N. Babu; Dhanya M.S;
Page : 1441-1447
Keywords : Calix4arene; AuNPs; Colorimetric sensor; Chemo-sensor; Photo luminescence;
In recent years, there has been increasing ecological and global public health concern associated with heavy metal ions even at lower concentration. These heavy metals are non-biodegradable and remain in the ecological system and food chain system at high levels of pollution. The chemical recognition of heavy-metal ions is the base for the mentioned techniques to enable a proper sensing through speciﬁc substances/species called receptors of the Fluorogenic chemo-sensor. So Fluorogenic chemo-sensor sensing technique having high reliability and sensitivity for analysis of target non biodegradable heavy metal ions detection by utilizing Gold Nanoparticles (AuNPs) surface coated with calix arene amine derivative. Signaling event of chemo-sensor after binding with analyte of interest was characterized by 1H NMR, Fourier-transform infrared spectroscopy (FTIR), Photo luminescence (PL) and Transmission electron microscope (TEM) analysis. Calix arene amine derivative capped gold nanoparticle (C A3@AuNPs) in Tetrahydrofuran (THF) dispersible at low pH with specific size and zeta potential of 50±2 MeV make these nanoparticle has potential for various application. Calix arene amine derivative capped gold nanoparticle (C A3@AuNPs) were found to be fluorometric sensor for Zn2+ metal ion among these metal ions i. e. Li+, Zn2+, Ni2+, Ba2+, Cr3+, Which can detected at very low concentration level of 1 µM in facile way of fluorescence quenching via colorimetric sensor relies real time quantitative detection of Zn2+metal ion with detection limit of 1.5×10-6 M.
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