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Thiophene aldehyde-diamino uracil Schiff base: A novel fluorescent probe for detection and quantification of cupric, silver and ferric ions.
- Source :
-
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy [Spectrochim Acta A Mol Biomol Spectrosc] 2015; Vol. 150, pp. 94-103. Date of Electronic Publication: 2015 May 20. - Publication Year :
- 2015
-
Abstract
- A new Schiff base from the condensation of 5,6-diamino-1,3-dimethyluracil with 5-methylthiophene-2-carboxaldehyde was synthesized. The compound was characterized by spectral data (UV-Vis, IR, (1)H NMR, fluorescence, MS). Ethanolic solutions of the Schiff base exhibit a strong fluorescence emission at 385 nm (λex=341 nm), and have been employed as a "turn-off" fluorescent probe for selective detection of Ag(+), Cu(2+) and Fe(3+) ions in presence of other cations such as Na(+), K(+), Ca(2+) and Mg(2+) ions abundant in natural water. The interaction between the tested compound and copper, silver or iron ions is associated with a significant fluorescence decrease, showing detection limits of 2.1-14.2 ppb. Under optimal conditions, the developed sensor was successfully employed to determine Ag(+), Cu(2+) and Fe(3+) ions in real samples and proved to be selective and sensitive.<br /> (Copyright © 2015 Elsevier B.V. All rights reserved.)
- Subjects :
- Cations analysis
Diamines chemistry
Iron analysis
Limit of Detection
Models, Molecular
Spectrometry, Fluorescence methods
Water analysis
Aldehydes chemistry
Copper analysis
Fluorescent Dyes chemistry
Schiff Bases chemistry
Silver analysis
Thiophenes chemistry
Water Pollution, Chemical analysis
Subjects
Details
- Language :
- English
- ISSN :
- 1873-3557
- Volume :
- 150
- Database :
- MEDLINE
- Journal :
- Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy
- Publication Type :
- Academic Journal
- Accession number :
- 26026307
- Full Text :
- https://doi.org/10.1016/j.saa.2015.05.038