Polyoxometalate-Based Metal Organic Frameworks (POMOFs): Structural Trends, Energetics, and High Electrocatalytic Efficiency for Hydrogen Evolution Reaction

Nohra, Brigitte; Moll, Hani El; Albelo, L. Marleny Rodriguez; Mialane, Pierre; Marrot, Jérôme; Mellot‐Draznieks, Caroline; O’Keeffe, Michael; Biboum, Rosa Ngo; Lemaire, Joël; Keita, Bineta; Nadjo, L.; Dolbecq, Anne

doi:10.1021/ja201165c

Cited by 502 publications

(329 citation statements)

References 79 publications

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“…However, few inorganic agents have been reported that can inhibit Ab amyloid formation [6][7][8][9][10][11] . Polyoxometalates (POMs) are early transition metal oxide clusters (especially Mo, W and V) with high oxidation states, and they are used for constructing molecular architectures with potential applications 16 , for example, in catalysis 17 , magnetic materials 18 , chiral recognition 19 or nanocomposites 20 . Furthermore, POMs are promising candidates for drug-carrier approaches on the way to new composite drugs because they have long been known for their multifaceted bioactivity that encompasses antiviral, anticancer, antibacterial and herbicidal properties 21 .…”

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confidence: 99%

Transition-metal-substituted polyoxometalate derivatives as functional anti-amyloid agents for Alzheimer’s disease

et al. 2014

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Inhibitions of amyloid b (Ab) aggregation and Ab-haem peroxidase-like activity have received much attention because these two symptoms can be the primary targets of therapeutic strategies for Alzheimer's disease (AD). Recently, our group found that polyoxometalate (POM) with a Wells-Dawson structure can efficiently inhibit Ab aggregation. However, the interaction between POMs and Ab is robust, but still needs to improve Ab binding affinity. More importantly, it is unclear whether POMs can cross the blood-brain barrier and decrease Ab-haem peroxidase-like activity. Here we show that our designed series of transition metal-functionalized POM derivatives with a defined histidine-chelated binding site have much better Ab inhibition and peroxidase-like activity inhibition effects than the parent POM. More intriguingly, we show that these compounds can cross the blood-brain barrier and are metabolized after 48 h. Our work provides insights into the design, synthesis and screening of inorganic metal compounds as multifunctional therapeutic agents against AD.

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confidence: 99%

Transition-metal-substituted polyoxometalate derivatives as functional anti-amyloid agents for Alzheimer’s disease

et al. 2014

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“…In comparison with the first report for electrochemical HER with polyoxometalate-based metal organic frameworks (POMOFs) [29], although the onset potential is relatively higher, but it seems that the j value for the proposed electrode is greater. Also compared to two recently published reports for electrochemical HER on MOF-5 modified CPE [31] and Ni-based MOF modified GCE [30], the proposed modified CPE electrode has better current densities or onset potential for HER.…”

Section: Steady-state Polarization Curves For Her At Bare and Modifiementioning

confidence: 53%

“…Among the wide range of available catalysts, MOFs have recently received noticeable attention owing to their characteristics such as porosity, specific surface area and adjustable pore size [20,21]. Related to hydrogen energy, MOFs have been mostly used for hydrogen storage [22][23][24][25] and there are some reports in hydrogen generation area with photocatalytic method [26][27][28], and a few reports for electrochemical hydrogen generation [29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of palladium–carbon nanotube–metal organic framework composite and its application as electrocatalyst for hydrogen production

et al. 2016

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There are very rare reports on using metal-organic framework (MOF) catalysts for electrochemical hydrogen production. In this study, a composite of palladium, single-walled carbon nanotube (SWCNT) and was synthesized by hydrothermal method, and its application as electrocatalyst in carbon paste electrode (CPE) structure for hydrogen production was studied. Scanning electron microscopy, X-ray diffraction, Brunauer-Emmett-Teller and thermal gravimetric analysis were used to characterize Pd/ SWCNTs@MOF-199 catalyst. The performance of the proposed modified CPE for electrochemical hydrogen production was studied by cyclic voltammetry, linear sweep voltammetry, electrochemical impedance spectroscopy and chronoamperometry techniques. The effect of solution pH and the amount of binder and catalyst in the paste composition were investigated. The results showed that the CPE modified with Pd/SWCNTs@MOF-199 reveals better catalytic characteristics such as highest catalytic activity and lowest onset potential compared to CPE and CPE modified with MOF-199 for hydrogen production in aqueous solution.

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“…For example Dolbecq et al [70] reported the preparation of four 1D and 2D networks. More specifically, (TBA) 3 3 ] 2− anions and para-azobipyridine (pazo) ligands completing the coordination sphere.…”

Section: Pom-ofsmentioning

confidence: 99%

Self-Assembly in Polyoxometalate and Metal Coordination-Based Systems: Synthetic Approaches and Developments

et al. 2018

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Abstract:Utilizing new experimental approaches and gradual understanding of the underlying chemical processes has led to advances in the self-assembly of inorganic and metal-organic compounds at a very fast pace over the last decades. Exploitation of unveiled information originating from initial experimental observations has sparked the development of new families of compounds with unique structural characteristics and functionalities. The main source of inspiration for numerous research groups originated from the implementation of the design element along with the discovery of new chemical components which can self-assemble into complex structures with wide range of sizes, topologies and functionalities. Not only do self-assembled inorganic and metal-organic chemical systems belong to families of compounds with configurable structures, but also have a vast array of physical properties which reflect the chemical information stored in the various "modular" molecular subunits. The purpose of this short review article is not the exhaustive discussion of the broad field of inorganic and metal-organic chemical systems, but the discussion of some representative examples from each category which demonstrate the implementation of new synthetic approaches and design principles.

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Polyoxometalate-Based Metal Organic Frameworks (POMOFs): Structural Trends, Energetics, and High Electrocatalytic Efficiency for Hydrogen Evolution Reaction

Cited by 502 publications

References 79 publications

Transition-metal-substituted polyoxometalate derivatives as functional anti-amyloid agents for Alzheimer’s disease

Transition-metal-substituted polyoxometalate derivatives as functional anti-amyloid agents for Alzheimer’s disease

Synthesis of palladium–carbon nanotube–metal organic framework composite and its application as electrocatalyst for hydrogen production

Self-Assembly in Polyoxometalate and Metal Coordination-Based Systems: Synthetic Approaches and Developments

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