Polymeric imidazolium ionic liquids as valuable stationary phases in gas chromatography: Chemical synthesis and full characterization

González-Álvarez, Jaime; Blanco-Gomis, Domingo; Arias-Abrodo, Pilar; Díaz-Llorente, Daniel; Ríos‐Lombardía, Nicolás; Busto, Eduardo; Gotor‐Fernández, Vicente; Álvarez, Manuel

doi:10.1016/j.aca.2012.01.047

Cited by 49 publications

(21 citation statements)

References 38 publications

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“…The salt of α‐CD 4 a is a viscous room‐temperature IL, so it could be used in its neat form as stationary phase to coat directly the silica tubing. A solution of 4 a in dichloromethane (0.18 % w/v) was used to fill 13 meters of fused‐silica capillary tubing and to obtain a stationary phase film thickness of 0.11 μm 34…”

Section: Resultsmentioning

confidence: 99%

Insertion of a Single‐Molecule Magnet inside a Ferromagnetic Lattice Based on a 3D Bimetallic Oxalate Network: Towards Molecular Analogues of Permanent Magnets

Clemente‐León

Coronado

Gómez‐García

et al. 2014

Chemistry A European J

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C‐type cytochromes located on the outer membrane (OMCs) of genus Shewanella act as the main redox‐active species to mediate extracellular electron transfer (EET) from the inside of the outer membrane to the external environment: the central challenge that must be met for successful EET. The redox states of OMCs play a crucial role in dictating the rate and extent of EET. Here, we report that the surface wettability of the electrodes strongly influences the EET activity of living organisms of Shewanella loihica PV‐4 at a fixed external potential: the EET activity on a hydrophilic electrode is more than five times higher than that on a hydrophobic one. We propose that the redox state of OMCs varies significantly at electrodes with different wettability, resulting in different EET activities.

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Section: Resultsmentioning

confidence: 99%

Insertion of a Single‐Molecule Magnet inside a Ferromagnetic Lattice Based on a 3D Bimetallic Oxalate Network: Towards Molecular Analogues of Permanent Magnets

Clemente‐León

Coronado

Gómez‐García

et al. 2014

Chemistry A European J

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“…In addition, ILs have been introduced as an important component to form task-specific polymers, which will be capable of interacting with analytes or substrates in specific ways. And the IL-based polymers are favorable candidates as adsorption materials used in sample pretreatment due to their excellent physical and chemical properties [6,7]. Until now, ILs has been used as a solvent or porogen in the preparation of polymer, which can accelerate the synthesis process and improve the adsorption of the polymers [8].…”

Section: Introductionmentioning

confidence: 99%

Polymethacrylate microparticles covalently functionalized with an ionic liquid for solid-phase extraction of fluoroquinolone antibiotics

et al. 2015

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Microparticles were synthesized by suspension copolymerization of the synthetic ionic liquid (IL) 1-allyl-3-methylimidazolium bromide with ethylene glycol dimethacrylate. The particles have a regular spherical shape and an average diameter of 65±24 μm. Their affinity for the fluoroquinolone antibiotics ofloxacin (OFL), lomefloxacin (LOM) and ciprofloxacin (CIP) is much higher than that of the blank polymer (not containing an IL), of polymers using methacrylic acid as functional monomer, of hydrophilic-lipophilic balanced sorbents, and of C 18 sorbents. The microparticles were applied to the solid-phase extraction and rapid preconcentration of the fluoroquinolones from urine which then were quantified by HPLC. The calibration plot covers the 0.05 to 20 μg mL −1 concentration range, and the average recoveries at three spiking levels range from 93.6 to 103.7 %, with RSD of ≤5.7 %. The method was successfully applied to the determination of fluoroquinolones in spiked urine.

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“…Taking into account of these advantages, ILs have been applied as green solvent in various fields, for instance, catalysis, chemical synthesis, separation sciences, and so on. (González‐Álvarez et al, ; Mazloum‐Ardakani & Khoshroo, ). The purpose of this paper was to develop a particular green miniaturized MSPDE method employing β‐CD as adsorbent and IL as elution solvent to simultaneously determine neochlorogenic acid, chlorogenic acid, cryptochlorogenic acid, rutin, isoquercitrin, and astragalin (chemical structures in Figure ) of Mori Fructus by ultra‐performance liquid chromatography.…”

Section: Introductionmentioning

confidence: 99%

Determination of antioxidant ingredients in Mori Fructus employing ionic liquid‐assisted miniaturized matrix solid‐phase dispersion extraction via ultra‐performance liquid chromatography

Chen

et al. 2019

J Food Biochem

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A simple miniaturized matrix solid‐phase dispersion extraction was developed to analyze multiple antioxidant ingredients (neochlorogenic acid, chlorogenic acid, cryptochlorogenic acid, rutin, isoquercitrin, and astragalin) in Mori Fructus by ultra performance liquid chromatography coupled with an ultraviolet detector. 1‐ethyl‐3‐methylimidazolium bromide was employed in the elution process as eco‐friendly elution solvent. The effects of some factors on the extraction efficiency of antioxidants in Mori Fructus were optimized in detail, such as the type of adsorbent, the type of elution solvent, the concentration and volume of elution solvent, sample to adsorbent ratio, and the grinding time. The intra‐day and inter‐day precisions (RSD) were both below 5.0% and the recoveries of all analytes ranged from 93.5% to 98.3%. Compared with the traditional method, it was efficient, simple and environment‐friendly for extracting the analytes by ionic liquid assisted trace β‐CD matrix solid‐phase dispersion extraction method, due to shorter extraction time, less reagent and less sample consumption. The developed method was successfully used for extracting and determining the active compounds in Mori Fructus sample. Practical applications The antioxidant ingredients play important roles in Mori Fructus because of their main pharmacological activities. Nowadays, a few analytical methods could be applied for extracting and analyzing these target compounds. But these methods not only required much extracting and analyzing time, but also need a great deal of organic reagent, which were not environmentally friendly. Thus, a green and simple miniaturized matrix solid phase dispersion extraction method was proposed for the analysis of these antioxidants in Mori Fructus, which was efficient to be employed for evaluating the quality of Traditional Chinese Medicine.

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Polymeric imidazolium ionic liquids as valuable stationary phases in gas chromatography: Chemical synthesis and full characterization

Cited by 49 publications

References 38 publications

Insertion of a Single‐Molecule Magnet inside a Ferromagnetic Lattice Based on a 3D Bimetallic Oxalate Network: Towards Molecular Analogues of Permanent Magnets

Insertion of a Single‐Molecule Magnet inside a Ferromagnetic Lattice Based on a 3D Bimetallic Oxalate Network: Towards Molecular Analogues of Permanent Magnets

Polymethacrylate microparticles covalently functionalized with an ionic liquid for solid-phase extraction of fluoroquinolone antibiotics

Determination of antioxidant ingredients in Mori Fructus employing ionic liquid‐assisted miniaturized matrix solid‐phase dispersion extraction via ultra‐performance liquid chromatography

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