2018
DOI: 10.21577/0100-4042.20170229
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A Highly Selective Fluorescent Sensor for Detection of Trivalent Metal Ions Based on a Simple Schiff-Base

Abstract: A simple and easily synthesized fluorescent sensor L, based on condensation reaction of 1-Naphthylamine and terephthalaldehyde, was synthesized and characterized systemically. Both UV-vis and fluorescence spectroscopic studies indicated that the sensor L showed good selectivity toward trivalent metal ions (such as Al 3+ , Fe 3+ , Cr 3+ , La 3+ and Ce 3+) over other monovalent or divalent metal ions. The sensing mechanism was suggested that the trivalent ion promoted the hydrolysis of Schiff base. Meanwhile, to… Show more

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Cited by 7 publications
(4 citation statements)
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“…The limit of detection was shown to be 1.3 × 10 −7 M via fluorescence titration, and the association constant Ka was reported as 2.28 × 10 5 M −1 . Additionally, DFT and TDDFT simulation results were provided to understand the proposed complex's optimal structure as well as its electronic spectra [48]. An innovative thiazole-based fluorescent Schiff base chemosensor 15 for the chemodosimetric method to Cr(III) ion detection was discussed.…”
Section: Detection Of Chromium Ionmentioning
confidence: 99%
“…The limit of detection was shown to be 1.3 × 10 −7 M via fluorescence titration, and the association constant Ka was reported as 2.28 × 10 5 M −1 . Additionally, DFT and TDDFT simulation results were provided to understand the proposed complex's optimal structure as well as its electronic spectra [48]. An innovative thiazole-based fluorescent Schiff base chemosensor 15 for the chemodosimetric method to Cr(III) ion detection was discussed.…”
Section: Detection Of Chromium Ionmentioning
confidence: 99%
“…Many conventional techniques such as inductively coupled plasma–atomic emission spectrometry, atomic absorption spectrometry, X-ray photoelectron spectroscopy, inductively coupled plasma–mass spectrometry, and electrochemical methods are established techniques to detect heavy-metal ions. These processes have either lesser detection limits or need sophisticated/complicated steps to detect heavy-metal ions in trace amounts . Fluorescence-based optical sensing is one of the simpler processes with several advantages such as good limit of detection (LOD) in the order of nM range, high sensitivity, rapid detection, low cost, and easy to use.…”
Section: Introductionmentioning
confidence: 99%
“…These processes have either lesser detection limits or need sophisticated/complicated steps to detect heavy-metal ions in trace amounts. 6 Fluorescence-based optical sensing is one of the simpler processes with several advantages such as good limit of detection (LOD) in the order of nM range, 7 high sensitivity, 8 rapid detection, 9 low cost, 10 and easy to use. Quantum dots (QDs) are known to exhibit exceptional luminescence properties, tunable optical performances, 11 high photoluminescence quantum yields (PLQYs), 12 narrow full width at half-maximum, 13 long effective diffusion length, and unique carrier separation properties, representing their ability to act as excellent optical probes.…”
Section: Introductionmentioning
confidence: 99%
“…Even though there are many reports on Fe 3+ to date, there is always a need for advancement in these sensors in terms of economic procedures for synthesis, non-toxicity, reversibility, etc. [4][5][6] Temperature plays a vital role in all physical and biological systems. Molecular thermometers are procuring large consideration over conventional temperature detectors such as thermometers, thermistors, thermocouples, etc.…”
Section: Introductionmentioning
confidence: 99%