Publication Type Journal Article
Title A Reusable Eu3+ Complex for Naked?Eye Discrimination of Methanol from Ethanol with a Ratiometric Fluorimetric Equilibrium in Methanol/Ethanol Mixtures
Authors João P. Leal Filipe A. Almeida Paz Ricardo F. Mendes Tiago Moreira Mani Outis Cesar A. T. Laia Bernardo Monteiro Claudia C. L. Pereira
Groups IOARC
Journal EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
Year 2019
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Abstract Immediate naked eye distinction of methanol from ethanol can be performed by simple dissolution, in each of these solvents, of either [Na][EuFOD4] (1) complex or in mixture of products from the reaction between [P-6,P-6,P-6,P-14][Eu(FOD)(4)] and NaOPhMe3, referred as 2, ([P-6,P-6,P-6,P-14](+) = trihexyltetradecylphosphonium cation, FOD- = 1,1,1,2,2,3,3-heptafluoro-7,7-dimethyloctane-4,6-dionate). Additionally, an easy, low-cost, efficient and fast spectrofluorimetric method for the detection and quantification of methanol in mixtures with ethanol is described. This method is based on the changes in the Eu3+ luminescence in the visible region due to the interaction of the [P-6,P-6,P-6,P-14][Eu(FOD)(4)] complex with these alcohols. A limit of detection as low as 15 \% (w/w) of methanol in mixtures of ethanol/methanol is discussed considering a linear calibration curve.
DOI http://dx.doi.org/10.1002/ejic.201900843
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ISSN 1434-1948
EISSN 1099-0682
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Bibtex ID ISI:000497228700001
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