Nanostructured molybdenum oxide in a 3D metal organic framework and in a 2D polyoxometalate network for extraction of chlorinated benzenes prior to their quantification by GC–MS

Bagheri, Habib; Zandian, Faezeh Karimi; Javanmardi, Hasan; Abbasi, Alireza; Aqda, Tahereh Golzari

doi:10.1007/s00604-018-3070-5

Cited by 13 publications

(3 citation statements)

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“…1−3 Structural analysis of these polyoxometalate-based frameworks suggested their use in applications such as sequestration and extraction. 4 The synthesis or "self-assembly" of materials of this type can be achieved by using a variety of protocols and componentry, including, the use of preformed POM precursors or the generation of the polyanion in situ. Linkage of the POM by using one or more of the following (e.g., transition metals, lanthanoids, main group elements, and organic linkers) enables the merging of the component properties and can offer a facile route to crystalline POM-based materials for technologically relevant applications.…”

Section: Introductionmentioning

confidence: 99%

“…The past decade has seen tremendous progress in the development and use of crystalline framework materials that contain polyoxometalates either as anionic guests within the framework pores or as structural building block within the framework itself. − Structural analysis of these polyoxometalate-based frameworks suggested their use in applications such as sequestration and extraction . The synthesis or “self-assembly” of materials of this type can be achieved by using a variety of protocols and componentry, including, the use of preformed POM precursors or the generation of the polyanion in situ .…”

Section: Introductionmentioning

confidence: 99%

“…The synthesis or “self-assembly” of materials of this type can be achieved by using a variety of protocols and componentry, including, the use of preformed POM precursors or the generation of the polyanion in situ . Linkage of the POM by using one or more of the following (e.g., transition metals, lanthanoids, main group elements, and organic linkers) enables the merging of the component properties and can offer a facile route to crystalline POM-based materials for technologically relevant applications. , In recent years, POMs have been incorporated into organic–inorganic frameworks as guests or templates to construct novel hybrid materials that have attracted considerable scientific attention in the fields of environmental remediation, pollutant removal, and extraction methods. ,− This merging of organic and inorganic componentry has led to new properties such as large pores with high specific surface area, opening new opportunities in separation and adsorption technologies. ,− …”

Section: Introductionmentioning

confidence: 99%

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Polyoxometalate-Based Frameworks as Adsorbents for Drug of Abuse Extraction from Hair Samples

et al. 2021

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The linkage of molecular components into functional heterogeneous framework materials has revolutionized modern materials chemistry. Here, we use this principle to design polyoxometalate-based frameworks as high affinity adsorbents for drugs of abuse, leading to their application in solid-phase extraction analysis. The frameworks are assembled by the reaction of a Keggin-type polyanion, [SiW 12 O 40 ] 4− , with lanthanoids Dy(III), La(III), Nd(III), and Sm(III) and the multidentate linking ligand 1,10-phenanthroline-2,9-dicarboxylic acid (H 2 PDA). Their reaction leads to the formation of crystalline 1D coordination polymers. Because of the charge mismatch between the lanthanoids (+3) and the dodecasilicotungstate (−4), we observe incorporation of the PDA 2− ligands into crystalline materials, leading to four polyoxometalate-based frameworks where Keggin-type heteropolyanions are linked by cationic {Ln n (PDA) n } groups (Ln = Dy (1), La (2), Nd (3), and Sm (4)). Structural analysis of the polyoxometalate-based frameworks suggested that they might be suitable for surface binding of common drugs of abuse via supramolecular interactions. To this end, they were used for the extraction and quantitative determination of four model drugs of abuse (amphetamine, methamphetamine, codeine, and morphine) by using micro-solid-phase extraction (D-μSPE) and high-performance liquid chromatography (HPLC). The method showed wide linear ranges, low limits of detection (0.1−0.3 ng mL −1 ), high precision, and satisfactory spiked recoveries. Our results demonstrate that polyoxometalate-based frameworks are suitable sorbents in D-μSPE for molecules containing amine functionalities. The modular design of these networks could in the future be used to expand and tune their substrate binding behavior.

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Section: Introductionmentioning

confidence: 99%