Publicação
A Reusable Eu3+ Complex for Naked-Eye Discrimination of Methanol from Ethanol with a Ratiometric Fluorimetric Equilibrium in Methanol/Ethanol Mixtures
| Resumo: | 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 [P6,6,6,14][Eu(FOD)4] and NaOPhMe3, referred as 2, ([P6,6,6,14]+ = 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 [P6,6,6,14][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. |
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| Autores principais: | Leal, João P. |
| Outros Autores: | Paz, Filipe A. Almeida; Mendes, Ricardo F.; Moreira, Tiago; Outis, Mani; Laia, César A. T.; Monteiro, Bernardo; Pereira, Cláudia C. L. |
| Assunto: | Ethanol Europium Fluorescence Ionic liquids Methanol Sensors Inorganic Chemistry |
| Ano: | 2019 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade Nova de Lisboa |
| Idioma: | inglês |
| Origem: | Repositório Institucional da UNL |
| Resumo: | 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 [P6,6,6,14][Eu(FOD)4] and NaOPhMe3, referred as 2, ([P6,6,6,14]+ = 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 [P6,6,6,14][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. |
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