A novel luminescent optical fibre probe based on immobilized tridentate bis(phosphinic amide)-phosphine oxide for europium(III) ion aqueous detection in situ

Sainz-Gonzalo, F.J.; Elosúa, César; Popovici, C.; Fernández, Ignacio; Ortiz, Fernando López; Arregui, Francisco J.; Matı́as, Ignacio R.; Fernández‐Gutiérrez, Alberto

doi:10.1016/j.snb.2012.07.008

Cited by 15 publications

(16 citation statements)

References 44 publications

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“…ESI (see Fig. S15 †) shows the excitation and emission spectra of the optimized membrane sensor in the presence of In comparison with other previously published sensing lms, 9,10,19,20 it is possible to conclude that the selectivity of the proposed sensing lm is similar to other optical sensing lms. It is worth mentioning that the electrochemical sensors seem to be more selective because they are not affected by the presence of Tb(III).…”

Section: Ionic Additive Concentrationmentioning

confidence: 61%

“…In addition, they do not allow remote control or determination in hazardous environments, which represent the strongest advantages of the optical sensor presented herein, as we have demonstrated previously with a similar ligand. 20 3.3.2 Study of interferences and long-term stability. The selective behavior is clearly one of the most important parameters of a membrane sensor.…”

Section: Ionic Additive Concentrationmentioning

confidence: 99%

“…In addition, they have also been demonstrated to be advantageous in terms of sensibility and selectivity versus europium(III) electrochemical ones, [15][16][17][18] where only a few of these optical sensing layers have been described. 19,20 Ligand-sensitized luminescence of lanthanides 21 is a detection technique with great importance for trace determination of lanthanide ions. 22,23 This detection procedure can be implemented in the solid phase by immobilizing a ligand agent into a polymeric liquid membrane 1,9,10,16,[24][25][26] known as the polymer inclusion membrane (PIM).…”

Section: Introductionmentioning

confidence: 99%

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A novel tridentate bis(phosphinic acid)phosphine oxide based europium(iii)-selective Nafion membrane luminescent sensor

Sainz-Gonzalo

Popovici

Casimiro

et al. 2013

Analyst

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A new europium(III) membrane luminescent sensor based on a new tridentate bis(phosphinic acid)phosphine oxide (3) system has been developed. The synthesis of this new ligand is described and its full characterization by NMR, IR and elemental analyses is provided. The luminescent complex formed between europium(III) chloride and ligand 3 was evaluated in solution, observing that its spectroscopic and chemical characteristics are excellent for measuring in polymer inclusion membranes. Included in a Nafion membrane, all the parameters (ligand and ionic additives) that can affect the sensitivity and selectivity of the sensing membrane as well as the instrumental conditions were carefully optimized. The best luminescence signal (λexc = 229.06 nm and λem = 616.02 nm) was exhibited by the sensing film having a Nafion : ligand composition of 262.3 : 0.6 mg mL(-1). The membrane sensor showed a short response time (t95 = 5.0 ± 0.2 min) and an optimum working pH of 5.0 (25 mM acetate buffer solution). The membrane sensor manifested a good selectivity toward europium(III) ions with respect to other trivalent metals (iron, chromium and aluminium) and lanthanide(III) ions (lanthanum, samarium, terbium and ytterbium), although a small positive interference of terbium(III) ions was observed. It provided a linear range from 1.9 × 10(-8) to 5.0 × 10(-6) M with a very low detection limit (5.8 × 10(-9) M) and sensitivity (8.57 × 10(-7) a.u. per M). The applicability of this sensing film has been demonstrated by analyzing different kinds of spiked water samples obtaining recovery percentages of 95-97%.

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Section: Ionic Additive Concentrationmentioning

confidence: 61%

Section: Ionic Additive Concentrationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A novel tridentate bis(phosphinic acid)phosphine oxide based europium(iii)-selective Nafion membrane luminescent sensor

Sainz-Gonzalo

Popovici

Casimiro

et al. 2013

Analyst

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“…The resulting sensor, based on the absorbance spectral changes of the chemical indicator produced by ammonia molecules, shown a repetitive and sensitive response to this agent [ 72 ]. Other very well-known plastics such as poly (vinyl chloride) (PVC) have been used to prepare sensors that detect pyridine vapours [ 73 ] and europium ions dissolved in water [ 74 ]: it is important to keep in mind that some polymers are opaque, so that there is a trade-off between the coating thickness and the signal level that determines the final sensitivity. Polymers that yield to high porosity matrices that promote gas adsorption are required, for example, in the case of oxygen sensing: polystyrene (PS) was used to deposit luminescent metallic porphyrines to prepare an oxygen sensor [ 75 ].…”

Section: Nano and Microstructured Materials For Sensingmentioning

confidence: 99%

Micro and Nanostructured Materials for the Development of Optical Fibre Sensors

Elosúa

Arregui

Villar

et al. 2017

Sensors

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The measurement of chemical and biomedical parameters can take advantage of the features exclusively offered by optical fibre: passive nature, electromagnetic immunity and chemical stability are some of the most relevant ones. The small dimensions of the fibre generally require that the sensing material be loaded into a supporting matrix whose morphology is adjusted at a nanometric scale. Thanks to the advances in nanotechnology new deposition methods have been developed: they allow reagents from different chemical nature to be embedded into films with a thickness always below a few microns that also show a relevant aspect ratio to ensure a high transduction interface. This review reveals some of the main techniques that are currently been employed to develop this kind of sensors, describing in detail both the resulting supporting matrices as well as the sensing materials used. The main objective is to offer a general view of the state of the art to expose the main challenges and chances that this technology is facing currently.

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“…The energy transfer from the ligand to the europium ion leads to the strong characteristic luminescence of the europium ion. The ligands used include β‐diketone‐type (O donor) ligands15–17 and pyridine‐type (N donor) ligands 9,18. Nevertheless, water can deactivate the emission of the europium ion 19,20.…”

Section: Introductionmentioning

confidence: 99%

Fluorescence Quenching of a Europium Coordination Compound for the Detection of Trace Amounts of Water: Uncovering the Response Mechanism by Structural Confirmation

Song

Chai

et al. 2015

Eur J Inorg Chem

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The coordination compound Eu(DAF)2(NO3)3 (1, DAF = 4,5‐diazafluorene), which shows strong red fluorescence, has been synthesized and characterized. The luminescence‐quenching effect of 1 has been applied to the detection of water in CH3CN. For the first time, the response mechanism has been uncovered through the confirmation of the structure of the resultant nonluminous compound [Eu(NO3)2(H2O)5](NO3)(DAF)2·H2O (2). The replacement of the coordinated DAF ligands by the added water led to quenching of the emission of the EuIII ion and the simultaneous enhancement of the ligand emission. X‐ray powder diffraction and thermogravimetric analyses also confirmed this mechanism. Theoretical calculations by the semi‐empirical method revealed the origin of the absorption spectra of 1. This fluorometric detection of trace amounts of water in CH3CN by 1 is a direct, rapid, and sensitive method.

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A novel luminescent optical fibre probe based on immobilized tridentate bis(phosphinic amide)-phosphine oxide for europium(III) ion aqueous detection in situ

Cited by 15 publications

References 44 publications

A novel tridentate bis(phosphinic acid)phosphine oxide based europium(iii)-selective Nafion membrane luminescent sensor

A novel tridentate bis(phosphinic acid)phosphine oxide based europium(iii)-selective Nafion membrane luminescent sensor

Micro and Nanostructured Materials for the Development of Optical Fibre Sensors

Fluorescence Quenching of a Europium Coordination Compound for the Detection of Trace Amounts of Water: Uncovering the Response Mechanism by Structural Confirmation

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