Discriminating Chemosensor for Detection of Fe³⁺ in Aqueous Media by Fluorescence Quenching Methodology

Abstract

The Schiff base as chemosensor (B) namely 2-((anthracen-1-ylimino) methyl) phenol was designed and synthesized. The spectral properties of chemosensor B were confirmed by using IR, 1 H NMR, 13 C NMR, and LC-MS techniques. The chemosensor B shows a significant fluorescence quenching with incremental addition of Fe 3+ . The present chemosensor B shows unaffected fluorescence response induced by Fe 3+ even in the presence of other competing ions in mixed solvent system. The binding mode and stoichiometry (2:1) between chemosensor B and Fe 3+ were analyzed by recording 1 H NMR and Job's plot respectively. The ground state complexation of chemosensor B and Fe 3+ was confirmed by absorption titration and fluorescence lifetime measurement in the absence and presence of various concentration of Fe 3+ ion to chemosensor B. The lower detection limit for Fe 3+ found to be 0.59 μM with correlation coefficient R 2 = 0.9815. The present chemosensor B successfully applied for quantitative determination of the Fe 3+ ion from ordinary water samples.

Thiazole‐based Orange‐emitting Excited‐State Intramolecular Proton Transfer Chemosensors for Selective and Ratiometric Sensing of Zn2+ Ions

“…Investigation of highly sensitive and selective fluorescent materials for transition metal ions has attracted significant interest because of their important roles in biological and environmental importances . Because the second most plentiful transition metal ion in human body, Zn 2+ plays various critical roles in biological functions including neuronal signal transmission, enzymatic regulations, influencing DNA synthesis, and numerous cellular functions .…”

A Deferasirox Derivative That Acts as a Multifaceted Platform for the Detection and Quantification of Fe3+

“…However, these techniques are either expensive, require costly instrumentation, or are time consuming to conduct when analyzing multiple samples. In an effort to overcome these drawbacks, researchers have focused on the development of spectrophotometric chemosensors that allow for the rapid determination of iron content in water samples using colorimetric [18][19][20][21][22][23][24][25][26][27][28] and fluorescentbased [21,23,[27][28][29][30][31][32][33][34] means. However, many of these systems require the use of organic co-solvents, such as chloroform or acetic acid.…”

Synthesis, biological evaluation of antioxidant-antibacterial activities and computational studies of novel anthracene- and pyrene-based Schiff base derivatives

“…Additionally, their antiglycation activities [9] antiinflammatory [10,11], antitumor [12,13], antiviral [14], antipyretic [15], anti-HIV-1 [16], antiproliferative [17,18] abilities have also been reported. In addition, the presence of nitrogen in the core structure lead them to be used as a chemosensor [19][20][21].…”