Polyoxometalates in solution: speciation under spotlight

Gumerova, Nadiia I.; Rompel, Annette

doi:10.1039/d0cs00392a

Cited by 292 publications

(263 citation statements)

References 260 publications

(301 reference statements)

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“…Exposing similar trends in the stability of POV clusters, Rompel and coworkers have reported on the stability of plenary POV motifs. 79 This work has bolstered support for the observation that pH has a strong effect on cluster stability, and dictates the size and shape of POV assemblies At pH > 7, [V 10 O 28 ] 6is converted to lower-order assemblies; first, conversion to the tetrameric vanadium oxide cluster is observed [V 4 O 13 ] 6-(pH ⁓ 8 -10), which progresses to the dimeric [V 2 O 7 ] 4-(pH ⁓ 10.5 -12.5) and monomeric [VO 4 ] 3-(pH ⁓ 13 -14) species. It is worth noting that the conversion to the decavanadate ion to lower-order POVs is dependent also on vanadium concentration, temperature and ionic strength.…”

Section: Mechanistic Insight Into the Assembly Of Povsmentioning

confidence: 99%

Atomically precise vanadium-oxide clusters

et al. 2021

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Section: Mechanistic Insight Into the Assembly Of Povsmentioning

confidence: 99%

Atomically precise vanadium-oxide clusters

et al. 2021

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“…POMs inhibit a number of biological processes, such as β-amyloid aggregation 9 or the activity of P-type ATPase, 10 and can even act as artificial enzymes. 11 In order to contribute to the understanding of the role POMs play in biological systems, a multi- and interdisciplinary approach is required because POMs, like other inorganic coordination compounds, are flexible and reactive molecules, and their identity and integrity are highly dependent on the reaction conditions, such as the pH value, the type of buffer used, and influences from other components in the medium, 12 to name just a few. The inclusion and evaluation of the biological activity of POMs requires in-depth inorganic, biochemical, and biological knowledge.…”

Section: Introductionmentioning

confidence: 99%

Interweaving Disciplines to Advance Chemistry: Applying Polyoxometalates in Biology

Gumerova

Rompel

2021

Inorg. Chem.

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This Viewpoint brings awareness of the challenges and subsequent breakthroughs at the intersection of different disciplines, illustrated by the example of the influence biological entities exerted on a huge class of inorganic coordination compounds, called polyoxometalates (POMs). We highlight the possible effects of biological systems on POMs that need to be considered, thereby emphasizing the depth and complexity of interdisciplinary work. We map POMs’ structural, electrochemical, and stability properties in the presence of biomolecules and stress the potential challenges related to inorganic coordination chemistry carried out in biological systems. This Viewpoint shows that new chemistry is available at the intersections between disciplines and aims to guide the community toward a discussion about current as well as future trends in truly interdisciplinary work.

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“…Polyoxometalates (POMs) are an important and diverse class of nanoscale molecular metal oxides, which are characterised by a wide and versatile range of physicochemical properties that can be tuned on the molecular level [17]. Their redox properties and high oxidation activity also make them useful to a wide variety of applications, from catalysis [18] to medicine [19].…”

Section: Introductionmentioning

confidence: 99%

Antifungal Activity of Polyoxometalate-Ionic Liquids on Historical Brick

et al. 2020

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Moulds inhabiting mineral-based materials may cause their biodeterioration, contributing to inestimable losses, especially in the case of cultural heritage objects and architectures. Fungi in mouldy buildings may also pose a threat to human health and constitute the main etiological factor in building related illnesses. In this context, research into novel compounds with antifungal activity is of high importance. The aim of this study was to evaluate the antifungal activity of polyoxometalate-ionic liquids (POM-ILs) and their use in the eradication of moulds from historical brick. In the disc diffusion assay, all the tested POM-ILs inhibited growth of a mixed culture of moulds including Engyodontium album, Cladosporium cladosporioides, Alternaria alternata and Aspergillus fumigatus. These were isolated from the surfaces of historical brick barracks at the Auschwitz II-Birkenau State Museum in Oświęcim, Poland. POM-IL coatings on historical brick samples, under model conditions, showed that two compounds demonstrated very high antifungal activity, completely limiting mould growth and development. The antifungal activity of the POM-ILs appeared to stem from their toxic effects on conidia, as evidenced by environmental scanning transmission electron microscopy observations. The results herein indicated that POM-ILs are promising disinfectant materials for use not only on historical objects, but probably also on other mineral-based materials.

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Polyoxometalates in solution: speciation under spotlight

Abstract: The review covers stability and transformations of classical polyoxometalates in aqueous solutions and provides their ion-distribution diagrams over a wide pH range.

Cited by 292 publications

References 260 publications

Atomically precise vanadium-oxide clusters

Atomically precise vanadium-oxide clusters

Interweaving Disciplines to Advance Chemistry: Applying Polyoxometalates in Biology

Antifungal Activity of Polyoxometalate-Ionic Liquids on Historical Brick

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