1
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Lu M, Zhang M, Liu J, Yu TY, Chang JN, Shang LJ, Li SL, Lan YQ. Confining and Highly Dispersing Single Polyoxometalate Clusters in Covalent Organic Frameworks by Covalent Linkages for CO2 Photoreduction. J Am Chem Soc 2022; 144:1861-1871. [DOI: 10.1021/jacs.1c11987] [Citation(s) in RCA: 40] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Meng Lu
- School of Chemistry, South China Normal University, Guangzhou 510006, People’s Republic of China
| | - Mi Zhang
- School of Chemistry, South China Normal University, Guangzhou 510006, People’s Republic of China
| | - Jiang Liu
- School of Chemistry, South China Normal University, Guangzhou 510006, People’s Republic of China
- Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials, Jiangsu Key Laboratory of New Power Batteries, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, People’s Republic of China
| | - Tao-Yuan Yu
- Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials, Jiangsu Key Laboratory of New Power Batteries, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, People’s Republic of China
| | - Jia-Nan Chang
- Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials, Jiangsu Key Laboratory of New Power Batteries, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, People’s Republic of China
| | - Lin-Jie Shang
- Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials, Jiangsu Key Laboratory of New Power Batteries, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, People’s Republic of China
| | - Shun-Li Li
- School of Chemistry, South China Normal University, Guangzhou 510006, People’s Republic of China
- Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials, Jiangsu Key Laboratory of New Power Batteries, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, People’s Republic of China
| | - Ya-Qian Lan
- School of Chemistry, South China Normal University, Guangzhou 510006, People’s Republic of China
- Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials, Jiangsu Key Laboratory of New Power Batteries, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, People’s Republic of China
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2
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Ma L, Guo F, Ma JF. Two Cu( i)-based inorganic–organic complexes assembled with polyoxometalate and thiacalix[4]arene for efficient catalytic reactions. NEW J CHEM 2022. [DOI: 10.1039/d2nj00290f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two Cu(i)-based inorganic–organic complexes were synthesized, which can be used as high-efficiency heterogeneous catalysts for ODS and AAC reactions, respectively.
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Affiliation(s)
- Le Ma
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Department of Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Feifan Guo
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Department of Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Jian-Fang Ma
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Department of Chemistry, Northeast Normal University, Changchun, 130024, China
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3
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Alizadeh M, Yadollahi B. Niobium polyoxometalate–folic acid conjugate as a hybrid drug for cancer therapeutics. NEW J CHEM 2022. [DOI: 10.1039/d2nj01766k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work, covalently bonded folic acid to niobium substituted Wells-Dawson polyoxometalate, (Bu4N)5H4[P2W15Nb3O62]-folic acid, has been synthesized and characterized. Afterward, the bioactivity behavior of this hybrid compound against cervical (HeLa)...
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4
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Cameron JM, Guillemot G, Galambos T, Amin SS, Hampson E, Mall Haidaraly K, Newton GN, Izzet G. Supramolecular assemblies of organo-functionalised hybrid polyoxometalates: from functional building blocks to hierarchical nanomaterials. Chem Soc Rev 2021; 51:293-328. [PMID: 34889926 DOI: 10.1039/d1cs00832c] [Citation(s) in RCA: 63] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
This review provides a comprehensive overview of recent advances in the supramolecular organisation and hierarchical self-assembly of organo-functionalised hybrid polyoxometalates (hereafter referred to as hybrid POMs), and their emerging role as multi-functional building blocks in the construction of new nanomaterials. Polyoxometalates have long been studied as a fascinating outgrowth of traditional metal-oxide chemistry, where the unusual position they occupy between individual metal oxoanions and solid-state bulk oxides imbues them with a range of attractive properties (e.g. solubility, high structural modularity and tuneable properties/reactivity). Specifically, the capacity for POMs to be covalently coupled to an effectively limitless range of organic moieties has opened exciting new avenues in their rational design, while the combination of distinct organic and inorganic components facilitates the formation of complex molecular architectures and the emergence of new, unique functionalities. Here, we present a detailed discussion of the design opportunities afforded by hybrid POMs, where fine control over their size, topology and their covalent and non-covalent interactions with a range of other species and/or substrates makes them ideal building blocks in the assembly of a broad range of supramolecular hybrid nanomaterials. We review both direct self-assembly approaches (encompassing both solution and solid-state approaches) and the non-covalent interactions of hybrid POMs with a range of suitable substrates (including cavitands, carbon nanotubes and biological systems), while giving key consideration to the underlying driving forces in each case. Ultimately, this review aims to demonstrate the enormous potential that the rational assembly of hybrid POM clusters shows for the development of next-generation nanomaterials with applications in areas as diverse as catalysis, energy-storage and molecular biology, while providing our perspective on where the next major developments in the field may emerge.
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Affiliation(s)
- Jamie M Cameron
- Nottingham Applied Materials and Interfaces (NAMI) Group, The GSK Carbon Neutral Laboratories for Sustainable Chemistry, University of Nottingham, UK.
| | - Geoffroy Guillemot
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 4 Place Jussieu, F-75005 Paris, France.
| | - Theodor Galambos
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 4 Place Jussieu, F-75005 Paris, France.
| | - Sharad S Amin
- Nottingham Applied Materials and Interfaces (NAMI) Group, The GSK Carbon Neutral Laboratories for Sustainable Chemistry, University of Nottingham, UK.
| | - Elizabeth Hampson
- Nottingham Applied Materials and Interfaces (NAMI) Group, The GSK Carbon Neutral Laboratories for Sustainable Chemistry, University of Nottingham, UK.
| | - Kevin Mall Haidaraly
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 4 Place Jussieu, F-75005 Paris, France.
| | - Graham N Newton
- Nottingham Applied Materials and Interfaces (NAMI) Group, The GSK Carbon Neutral Laboratories for Sustainable Chemistry, University of Nottingham, UK.
| | - Guillaume Izzet
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 4 Place Jussieu, F-75005 Paris, France.
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5
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Alizadeh M, Yadollahi B, Kajani AA. Folic acid bonded (Bu4N)5H4[P2W15V3O62] as a smart hybrid compound for cancer cells targeting. Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115510] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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6
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Naulakha P, Mishra NK, Tanmaya Kumar N, Supriya S. Unusual redox activity of the central heteroatom manganese in Anderson anion: Modulating its oxidation state in a gas solid reaction. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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7
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Salazar Marcano DE, Lentink S, Moussawi MA, Parac-Vogt TN. Solution Dynamics of Hybrid Anderson-Evans Polyoxometalates. Inorg Chem 2021; 60:10215-10226. [PMID: 33881856 DOI: 10.1021/acs.inorgchem.1c00511] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Understanding the stability and speciation of metal-oxo clusters in solution is essential for many of their applications in different areas. In particular, hybrid organic-inorganic polyoxometalates (HPOMs) have been attracting increasing attention as they combine the complementary properties of organic ligands and metal-oxygen nanoclusters. Nevertheless, the speciation and solution behavior of HPOMs have been scarcely investigated. Hence, in this work, a series of HPOMs based on the archetypical Anderson-Evans structure, δ-[MnMo6O18{(OCH2)3C-R}2]3-, with different functional groups (R = -NH2, -CH3, -NHCOCH2Cl, -N═CH(2-C5H4N) {pyridine; -Pyr}, and -NHCOC9H15N2OS {biotin; -Biot}) and countercations (tetrabutylammonium {TBA}, Li, Na, and K) were synthesized, and their solution behavior was studied in detail. In aqueous solutions, decomposition of HPOMs into the free organic ligand, [MoO4]2-, and free Mn3+ was observed over time and was shown to be highly dependent on the pH, temperature, and nature of the ligand functional group but largely independent of ionic strength or the nature of the countercation. Furthermore, hydrolysis of the amide and imine bonds often present in postfunctionalized HPOMs was also observed. Hence, HPOMs were shown to exhibit highly dynamic behavior in solution, which needs to be carefully considered when designing HPOMs, particularly for biological applications.
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Affiliation(s)
| | - Sarah Lentink
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - Mhamad A Moussawi
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
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8
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Novel Tocopherol Succinate-Polyoxomolybdate Bioconjugate as Potential Anti-Cancer Agent. J Inorg Organomet Polym Mater 2021. [DOI: 10.1007/s10904-021-01998-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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9
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Switchable NLO response induced by rotation of the fulvalene diruthenium-linked polyoxometalate derivatives. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129659] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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10
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Switchable NLO response induced by redox properties of Keggin-type polyoxometalate hybrids [PX11O39{Sn(p-C6H4I)}]4- (X = Mo, W). J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128364] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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11
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Hampson E, Cameron JM, Watts JA, Newton GN. Transition metal decorated soft nanomaterials through modular self-assembly of an asymmetric hybrid polyoxometalate. Chem Commun (Camb) 2020; 56:8237-8240. [PMID: 32558835 DOI: 10.1039/d0cc03554h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
An asymmetrically functionalised Wells-Dawson organic-inorganic hybrid polyoxometalate has been post-functionalised by Pt2+ coordination, and demonstrates self-assembly into surface-decorated micellar nanostructures. This multifunctional hybrid material is found to be a redox-active soft nanomaterial and demonstrates a new molecular design strategy with potential for applications in photo- or electro-catalysis.
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Affiliation(s)
- Elizabeth Hampson
- GSK Carbon Neutral Laboratory for Sustainable Chemistry, University of Nottingham, Nottingham, NG7 2GA, UK.
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12
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Chilivery R, Begum G, Chaitanya V, Rana RK. Tunable Surface Wrinkling by a Bio‐Inspired Polyamine Anion Coacervation Process that Mediates the Assembly of Polyoxometalate Nanoclusters. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201913492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Rakesh Chilivery
- Nanomaterials Laboratory, Catalysis and Fine ChemicalsCSIR-Indian Institute of Chemical Technology Hyderabad 500007 India
- Academy of Scientific and Innovative Research Ghaziabad 201002 India
| | - Gousia Begum
- Nanomaterials Laboratory, Catalysis and Fine ChemicalsCSIR-Indian Institute of Chemical Technology Hyderabad 500007 India
| | - Vahinipathi Chaitanya
- Nanomaterials Laboratory, Catalysis and Fine ChemicalsCSIR-Indian Institute of Chemical Technology Hyderabad 500007 India
| | - Rohit Kumar Rana
- Nanomaterials Laboratory, Catalysis and Fine ChemicalsCSIR-Indian Institute of Chemical Technology Hyderabad 500007 India
- Academy of Scientific and Innovative Research Ghaziabad 201002 India
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13
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Chilivery R, Begum G, Chaitanya V, Rana RK. Tunable Surface Wrinkling by a Bio-Inspired Polyamine Anion Coacervation Process that Mediates the Assembly of Polyoxometalate Nanoclusters. Angew Chem Int Ed Engl 2020; 59:8160-8165. [PMID: 31957956 DOI: 10.1002/anie.201913492] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Indexed: 01/10/2023]
Abstract
A bio-inspired method is used to render controlled wrinkling surface patterns on supramolecular architectures assembled from polyoxometalate (POM) clusters. It involves a polyamine-multivalent anion interaction generating positively charged coacervates, which while dictating the assembly of POM into spherical structures further facilitate an interesting surface morphogenesis with wrinkling patterns. This spontaneous surface wrinkling depends on the type of multivalent anion and the pH. As the polyamine-anion interaction becomes stronger, the wrinkles turn denser with lesser depth, which eventually undergoes post-buckling to engender a complex surface pattern. Interestingly, the order of influence exerted by different anions on the morphology follows the Hofmeister series. Moreover, the mild synthesis conditions keep the functional POM units dispersed in the sphere with a structural transformability to their lacunary form.
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Affiliation(s)
- Rakesh Chilivery
- Nanomaterials Laboratory, Catalysis and Fine Chemicals, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500007, India.,Academy of Scientific and Innovative Research, Ghaziabad, 201002, India
| | - Gousia Begum
- Nanomaterials Laboratory, Catalysis and Fine Chemicals, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500007, India
| | - Vahinipathi Chaitanya
- Nanomaterials Laboratory, Catalysis and Fine Chemicals, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500007, India
| | - Rohit Kumar Rana
- Nanomaterials Laboratory, Catalysis and Fine Chemicals, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500007, India.,Academy of Scientific and Innovative Research, Ghaziabad, 201002, India
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14
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Cao YD, Yin D, Wang ML, Pang T, Lv Y, Liu B, Gao GG, Ma L, Liu H. Pt-Substituted polyoxometalate modification on the surface of low-cost TiO 2 with highly efficient H 2 evolution performance. Dalton Trans 2020; 49:2176-2183. [PMID: 31998895 DOI: 10.1039/c9dt04446a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
In this study, Pt-substituted polyoxometalate was first modified on the surface of commercially available TiO2, forming an efficient photocatalyst with high reactivity for hydrogen evolution. During the photocatalytic process, Pt-polyoxometalates not only increase the mobility rate of electrons but also improve the separation efficiency of photoinduced electrons and holes. After photoreduction, the in situ generated Pt0 species are anchored on the surface of polyoxometalate anion, which prevents further agglomeration. Then, the in situ formed Pt0 species and polyoxometalates synergistically promote the efficiency of photoinduced electron transfer from TiO2 to the protons adsorbed on the Pt0 surface. Although the content of Pt0 in the nanocomposite is only 0.6%, the photocatalytic hydrogen production rate reaches 5.6 mmol g-1 h-1 and remains stable at 4.5 mmol g-1 h-1 after the continuous catalytic process. Due to the modification of TiO2 by Pt-substituted polyoxometalate, this nanocomposite represents a practical model that possesses highly efficient photoelectric conversion performance. The presented work not only extends the family of new TiO2-polyoxometalate-based materials but also takes a further step toward the practical application of commercial TiO2 in photocatalytic hydrogen production.
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Affiliation(s)
- Yun-Dong Cao
- School of Materials Science and Engineering, University of Jinan, 250022, Jinan, China.
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15
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Anyushin AV, Kondinski A, Parac-Vogt TN. Hybrid polyoxometalates as post-functionalization platforms: from fundamentals to emerging applications. Chem Soc Rev 2019; 49:382-432. [PMID: 31793568 DOI: 10.1039/c8cs00854j] [Citation(s) in RCA: 200] [Impact Index Per Article: 40.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Polyoxometalates (POMs) represent an important group of metal-oxo nanoclusters, typically comprised of early transition metals in high oxidation states (mainly V, Mo and W). Many plenary POMs exhibit good pH, solvent, thermal and redox stability, which makes them attractive components for the design of covalently integrated hybrid organic-inorganic molecules, herein referred to as hybrid-POMs. Until now, thousands of organic hybrid-POMs have been reported; however, only a small fraction can be further functionalized using other organic molecules or metal cations. This emerging class of 'post-functionalizable' hybrid-POMs constitute a valuable modular platform that permits coupling of POM properties with different organic and metal cation functionalities, thereby expanding the key physicochemical properties that are relevant for application in (photo)catalysis, bioinorganic chemistry and materials science. The post-functionalizable hybrid-POM platforms offer an opportunity to covalently link multi-electron redox responsive POM cores with virtually any (bio)organic molecule or metal cation, generating a wide range of materials with tailored properties. Over the past few years, these materials have been showcased in the preparation of framework materials, functional surfaces, surfactants, homogeneous and heterogeneous catalysts and light harvesting materials, among others. This review article provides an overview on the state of the art in POM post-functionalization and highlights the key design and structural features that permit the discovery of new hybrid-POM platforms. In doing so, we aim to make the subject more comprehensible, both for chemists and for scientists with different materials science backgrounds interested in the applications of hybrid (POM) materials. The review article goes beyond the realms of polyoxometalate chemistry and encompasses emerging research domains such as reticular materials, surfactants, surface functionalization, light harvesting materials, non-linear optics, charge storing materials, and homogeneous acid-base catalysis among others.
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16
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Asymmetric Hybrid Polyoxometalates: A Platform for Multifunctional Redox‐Active Nanomaterials. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201912046] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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17
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Hampson E, Cameron JM, Amin S, Kyo J, Watts JA, Oshio H, Newton GN. Asymmetric Hybrid Polyoxometalates: A Platform for Multifunctional Redox-Active Nanomaterials. Angew Chem Int Ed Engl 2019; 58:18281-18285. [PMID: 31595597 PMCID: PMC6916258 DOI: 10.1002/anie.201912046] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Indexed: 11/25/2022]
Abstract
Access to asymmetrically functionalized polyoxometalates is a grand challenge as it could lead to new molecular nanomaterials with multiple or modular functionality. Now, a simple one‐pot synthetic approach to the isolation of an asymmetrically functionalized organic–inorganic hybrid Wells–Dawson polyoxometalate in good yield is presented. The cluster bears two organophosphonate moieties with contrasting physical properties: a chelating metal‐binding group, and a long aliphatic chain that facilitates solvent‐dependent self‐assembly into soft nanostructures. The orthogonal properties of the modular system are effectively demonstrated by controlled assembly of POM‐based redox‐active nanoparticles. This simple, high‐yielding synthetic method is a promising new approach to the preparation of multi‐functional hybrid metal oxide clusters, supermolecular systems, and soft‐nanomaterials.
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Affiliation(s)
- Elizabeth Hampson
- GSK Carbon Neutral Laboratory for Sustainable Chemistry, University of Nottingham, Nottingham, NG7 2GA, UK
| | - Jamie M Cameron
- GSK Carbon Neutral Laboratory for Sustainable Chemistry, University of Nottingham, Nottingham, NG7 2GA, UK
| | - Sharad Amin
- GSK Carbon Neutral Laboratory for Sustainable Chemistry, University of Nottingham, Nottingham, NG7 2GA, UK
| | - Joungman Kyo
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba, 305-8571, Japan
| | - Julie A Watts
- Nanoscale and Microscale Research Centre, University of Nottingham, Nottingham, NG7 2RD, UK
| | - Hiroki Oshio
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba, 305-8571, Japan.,State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Rd., Dalian, 116024, P. R. China
| | - Graham N Newton
- GSK Carbon Neutral Laboratory for Sustainable Chemistry, University of Nottingham, Nottingham, NG7 2GA, UK
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18
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Toward Advanced Functional Systems: Honeycomb-Like Polymeric Surfaces Incorporating Polyoxovanadates with Surface-Appended Copper-Cyclam Complexes. Molecules 2019; 24:molecules24122313. [PMID: 31234483 PMCID: PMC6630398 DOI: 10.3390/molecules24122313] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 06/03/2019] [Accepted: 06/06/2019] [Indexed: 11/30/2022] Open
Abstract
In this work the immobilization of hybrid polyoxometalates (POMs) onto functional polymeric surfaces is exposed and discussed. Thus, various hybrid polymer‒inorganic films were prepared by anchoring selected hybrid POMs onto tailored polymeric surfaces that consisted of breath figures (BFs) made of polystyrene-b-poly(acrylic acid)/polystyrene (PS-b-PAA/PS) blends. Functionalization of the BF films was performed by selective arrangement of acrylic acid groups of the amphiphilic block copolymer on the surface pores because of their affinition for the water condensed during breath figure formation. These carboxylic acid functional groups contained within the PAA blocks were then employed to anchor [Cu(cyclam)][{Cu(cyclam)}2(V10O28)]·10H2O (1-CuV10) and [{Cu(cyclam)}(VO3)2]·5H2O (1-CuV1), hybrid POMs by immersing the films into aqueous solutions of the in situ formed hybrid clusters, resulting in the hybrid films BF1 and BF2, respectively. Superficial analysis of these hybrid polymeric films was carried out by the sophisticated ion beam-based technique time-of-flight secondary ion mass spectrometry (ToF-SIMS) that was revealed to be an excellent method for the superficial compositional mapping of patterned surfaces.
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19
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Dalla Francesca K, Lenfant S, Laurans M, Volatron F, Izzet G, Humblot V, Methivier C, Guerin D, Proust A, Vuillaume D. Charge transport through redox active [H 7P 8W 48O 184] 33- polyoxometalates self-assembled onto gold surfaces and gold nanodots. NANOSCALE 2019; 11:1863-1878. [PMID: 30637426 DOI: 10.1039/c8nr09377f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Polyoxometalates (POMs) are redox-active molecular oxides, which attract growing interest for their integration into nano-devices, such as high-density data storage non-volatile memories. In this work, we investigated the electrostatic deposition of the negatively charged [H7P8W48O184]33- POM onto positively charged 8-amino-1-octanethiol self-assembled monolayers (SAMs) preformed onto gold substrates or onto an array of gold nanodots. The ring-shaped [H7P8W48O184]33- POM was selected as an example of large POMs with high charge storage capacity. To avoid the formation of POM aggregates onto the substrates, which would introduce variability in the local electrical properties, special attention has to be paid to the preformed SAM seeding layer, which should itself be deprived of aggregates. Where necessary, rinsing steps were found to be crucial to eliminate these aggregates and to provide uniformly covered substrates for subsequent POM deposition and electrical characterizations. This especially holds for commercially available gold/glass substrates while these rinsing steps were not essential in the case of template stripped gold of very low roughness. Charge transport through the related molecular junctions and nanodot molecule junctions (NMJs) has been probed by conducting-AFM. We analyzed the current-voltage curves with different models: electron tunneling though the SAMs (Simmons model), transition voltage spectroscopy (TVS) method or molecular single energy level mediated transport (Landauer equation) and we discussed the energetics of the molecular junctions. We concluded to an energy level alignment of the alkyl spacer and POM lowest occupied molecular orbitals (LUMOs), probably due to dipolar effects.
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Affiliation(s)
- K Dalla Francesca
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 4 Place Jussieu, F-75005 Paris, France.
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20
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Tewari S, Adnan M, Balendra, Kumar V, Jangra G, Prakash GV, Ramanan A. Photoluminescence Properties of Two Closely Related Isostructural Series Based on Anderson-Evans Cluster Coordinated With Lanthanides [Ln(H 2O) 7{X(OH) 6Mo 6O 18}]•yH 2O, X = Al, Cr. Front Chem 2019; 6:631. [PMID: 30666304 PMCID: PMC6330572 DOI: 10.3389/fchem.2018.00631] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Accepted: 12/05/2018] [Indexed: 11/13/2022] Open
Abstract
The paper describes synthesis and structural characterization of the whole series of two closely related lanthanide coordinated chromium or aluminum hexamolybdates (Anderson-Evans cluster) including twelve new members hitherto unreported: [Ln(H2O)7{X(OH)6Mo6O18}]·4H2O and [Ln(H2O)7{X(OH)6Mo6O18}Ln(H2O)7]{X(OH)6Mo6O18}·16H2O where X = Al or Cr and Ln = La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and Y. Crystal structures of all the solids were established by powder and single crystal X-ray diffraction techniques. The two series are dictated by a different aggregation of the same set of molecular species: Lighter lanthanides favor coordination interaction between lanthanide ions and molybdate cluster forming 1D chains (Series I) while the heavier lanthanides result in the stacking of a cation, a pair of lanthanide hydrates coordinating to the cluster, and an anion, the discrete cluster is further stabilized through a large number of water molecules (Series II). Crystallization with Er3+ and Tm3+ ions results in a concomitant mixture of Series I and II. Photoluminescence of single crystals of all the chromium molybdates was dominated by a ruby-like emission including those which contain optically active ions Pr, Sm, Eu, Tb, Dy, and Tm. In contrast, aluminum analogs showed photoluminescence corresponding to characteristic lanthanide emissions. Our results strongly suggest a possible energy transfer from f levels of lanthanide ions to d levels of chromium (III) causing the quenching of lanthanide emission when coordinated with chromium molybdates. Intensity measurements showed that the emission from chromium molybdates are almost two orders of magnitude lower than naturally occurring ruby with broader line widths at room temperature.
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Affiliation(s)
- Shailabh Tewari
- Department of Chemistry, Indian Institute of Technology Delhi, New Delhi, India
| | - Mohammad Adnan
- Department of Physics, Indian Institute of Technology Delhi, New Delhi, India
| | - Balendra
- Department of Chemistry, Indian Institute of Technology Delhi, New Delhi, India
| | - Vineet Kumar
- Department of Chemistry, Indian Institute of Technology Delhi, New Delhi, India
| | - Gaurav Jangra
- Department of Chemistry, Indian Institute of Technology Delhi, New Delhi, India
| | | | - Arunachalam Ramanan
- Department of Chemistry, Indian Institute of Technology Delhi, New Delhi, India
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21
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Gumerova NI, Caldera Fraile T, Roller A, Giester G, Pascual-Borràs M, Ohlin CA, Rompel A. Direct Single- and Double-Side Triol-Functionalization of the Mixed Type Anderson Polyoxotungstate [Cr(OH) 3W 6O 21] 6. Inorg Chem 2019; 58:106-113. [PMID: 30543282 PMCID: PMC6325722 DOI: 10.1021/acs.inorgchem.8b01740] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Indexed: 11/30/2022]
Abstract
Since the first successful triol-functionalization of the Anderson polyoxometalates, the six protons of their central octahedron X(OH)6 (X-heteroatom, p- or d-element) have been considered as a prerequisite for their functionalization with tripodal alcohols, and therefore, the functionalization of Anderson structures from the unprotonated sides have never been reported. Here, we describe the triol-functionalization of [Cr(OH)3W6O21]6- leading to the single-side grafted anions [Cr(OCH2)3CRW6O21]6- (CrW6-tris-R, R = -C2H5, -NH2, -CH2OH) and the unprecedented double-side functionalized anion [Cr((OCH2)3CC2H5)2W6O18]3- (CrW6-(tris-C2H5)2), despite the lack of protons in the parent anion in the solid state. CrW6-(tris-C2H5)2 demonstrates the first example of double-side functionalized Anderson POT with the partially one-side protonated corresponding parent anion. The new heteropolytungstates were characterized by single-crystal X-ray diffraction, elemental analysis, Fourier-transform infrared spectroscopy, thermal gravimetric analysis, cyclic voltammetry, and electrospray ionization mass spectrometry. Density functional theory calculations were performed to investigate and compare the stability among the different isomers of the parent anion [Cr(OH)3W6O21]6-.
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Affiliation(s)
- Nadiia I. Gumerova
- Fakultät
für Chemie, Institut für Biophysikalische Chemie and Fakultät
für Geowissenschaften, Geographie und Astronomie, Institut
für Mineralogie und Kristallographie, Universität Wien, 1090 Wien, Austria
| | - Tania Caldera Fraile
- Fakultät
für Chemie, Institut für Biophysikalische Chemie and Fakultät
für Geowissenschaften, Geographie und Astronomie, Institut
für Mineralogie und Kristallographie, Universität Wien, 1090 Wien, Austria
| | - Alexander Roller
- Fakultät
für Chemie, Universität Wien, Zentrum für Röntgenstrukturanalyse, 1090 Wien, Austria
| | - Gerald Giester
- Fakultät
für Chemie, Institut für Biophysikalische Chemie and Fakultät
für Geowissenschaften, Geographie und Astronomie, Institut
für Mineralogie und Kristallographie, Universität Wien, 1090 Wien, Austria
| | | | - C. André Ohlin
- Department of Chemistry, Umeå University, 901 87 Umeå, Sweden
| | - Annette Rompel
- Fakultät
für Chemie, Institut für Biophysikalische Chemie and Fakultät
für Geowissenschaften, Geographie und Astronomie, Institut
für Mineralogie und Kristallographie, Universität Wien, 1090 Wien, Austria
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22
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Liu Z, Wang W, Tang J, Li W, Yin W, Fang X. Chain length effect in the functionalization of polyoxometalates with α,ω-alkyldiphosphonates. Chem Commun (Camb) 2019; 55:6547-6550. [DOI: 10.1039/c9cc02854d] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Varying the alkylene tethers in hybrids of polyoxometalates and α,ω-alkyldiphosphonates, even just by a single methylene group, has met with strong structural and magnetic responses.
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Affiliation(s)
- Zhiwei Liu
- School of Chemistry and Chemical Engineering
- Harbin Institute of Technology
- Harbin 150001
- China
| | - Wei Wang
- Key Laboratory of Optoelectronic Materials Chemistry and Physics
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou 350002
- China
| | - Jinkui Tang
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
| | - Weiqi Li
- School of Physics
- Harbin Institute of Technology
- Harbin 150001
- China
| | - Weiye Yin
- School of Chemistry and Chemical Engineering
- Harbin Institute of Technology
- Harbin 150001
- China
| | - Xikui Fang
- School of Chemistry and Chemical Engineering
- Harbin Institute of Technology
- Harbin 150001
- China
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23
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Zhang J, Huang Y, Li G, Wei Y. Recent advances in alkoxylation chemistry of polyoxometalates: From synthetic strategies, structural overviews to functional applications. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2017.10.025] [Citation(s) in RCA: 163] [Impact Index Per Article: 32.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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24
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Gumerova NI, Blazevic A, Caldera Fraile T, Roller A, Giester G, Rompel A. Synthesis and characterization of hybrid Anderson hexamolybdoaluminates(III) functionalized with indometacin or cinnamic acid. Acta Crystallogr C Struct Chem 2018; 74:1378-1383. [PMID: 30398191 PMCID: PMC6218885 DOI: 10.1107/s2053229618012536] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Accepted: 09/05/2018] [Indexed: 11/17/2022] Open
Abstract
The single-side Al-centred tris-functionalized hybrid organic-inorganic Anderson polyoxomolybdates (C16H36N)3[Al(OH)3Mo6O18(OCH2)3CNH(C10H8O)]·C9H7N·4CH3OH·5H2O (AlMo6-NH-Cin; Cin is cinnamic acid, C10H9O2) and (C16H36N)3[Al(OH)3Mo6O18(OCH2)3CNH(C19H15ClNO3)]·9H2O (AlMo6-NH-Indo; Indo is indometacin, C19H16ClNO4) have been prepared in a mild three-step synthesis and structurally characterized by single-crystal X-ray diffraction, 1H NMR and IR spectroscopies and elemental analysis. Both AlMo6-NH-Cin and AlMo6-NH-Indo crystallize in the orthorhombic space group Pbca. The antibacterial activities of AlMo6-NH-Cin and AlMo6-NH-Indo against the Gram-negative human mucosal pathogen Moraxella catarrhalis were investigated by determination of the minimum inhibitory concentration, which is 32 µg ml-1 for AlMo6-NH-Cin and 256 µg ml-1 for AlMo6-NH-Indo.
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Affiliation(s)
- Nadiia I. Gumerova
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, Althanstrasse 14, Wien 1090, Austria
| | - Amir Blazevic
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, Althanstrasse 14, Wien 1090, Austria
| | - Tania Caldera Fraile
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, Althanstrasse 14, Wien 1090, Austria
| | - Alexander Roller
- Universität Wien, Facultät für Chemie, Zentrum für Röntgenstrukturanalyse, Währinger Strasse 42, Wien 1090, Austria
| | - Gerald Giester
- Universität Wien, Institut für Mineralogie und Kristallographie, Althanstrasse 14, Wien 1090, Austria
| | - Annette Rompel
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, Althanstrasse 14, Wien 1090, Austria
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25
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Laurans M, Dalla Francesca K, Volatron F, Izzet G, Guerin D, Vuillaume D, Lenfant S, Proust A. Molecular signature of polyoxometalates in electron transport of silicon-based molecular junctions. NANOSCALE 2018; 10:17156-17165. [PMID: 30187072 DOI: 10.1039/c8nr04946g] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Polyoxometalates (POMs) are unconventional electro-active molecules with a great potential for applications in molecular memories, providing efficient processing steps onto electrodes are available. The synthesis of the organic-inorganic polyoxometalate hybrids [PM11O39{Sn(C6H4)C[triple bond, length as m-dash]C(C6H4)N2}]3- (M = Mo, W) endowed with a remote diazonium function is reported together with their covalent immobilization onto hydrogenated n-Si(100) substrates. Electron transport measurements through the resulting densely-packed monolayers contacted with a mercury drop as a top electrode confirms their homogeneity. Adjustment of the current-voltage curves with the Simmon's equation gives a mean tunnel energy barrier ΦPOM of 1.8 eV and 1.6 eV, for the Silicon-Molecules-Metal (SMM) junctions based on the polyoxotungstates (M = W) and polyoxomolybdates (M = Mo), respectively. This follows the trend observed in the electrochemical properties of POMs in solution, the polyoxomolybdates being easier to reduce than the polyoxotungstates, in agreement with lowest unoccupied molecular orbitals (LUMOs) of lower energy. The molecular signature of the POMs is thus clearly identifiable in the solid-state electrical properties and the unmatched diversity of POM molecular and electronic structures should offer a great modularity.
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Affiliation(s)
- Maxime Laurans
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 4 Place Jussieu, F-75005 Paris, France.
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26
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Polyoxometalate-based microcrystal arrays patterned on air-grid superwettable surface. Sci Rep 2018; 8:13915. [PMID: 30224696 PMCID: PMC6141463 DOI: 10.1038/s41598-018-32279-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 05/30/2018] [Indexed: 11/08/2022] Open
Abstract
Surface patterning of polyoxometalates (POMs) is an important step to gain functional materials and devices. However, some special requirements such as complex operation steps or strict synthesis environment greatly limit their further applications. Herein, we have employed a simple and universal strategy for patterning POM-based microcrystal arrays on air-grid superwettable surfaces. The size and distribution of POM crystals were precisely adjusted by varying the pillar parameter of superwettable surface and concentration of POM mother liquid. We envision that this POM patterning method may bring valuable insights for designing POM-based functional materials and devices.
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27
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Zeng X, Gong C, Guo H, Xu H, Zhang J, Xie J. A new phenylthiourea grafted Mn-Anderson polyoxometalate cluster: Synthesis, crystal structure and characterization. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.05.030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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28
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Zhang T, Wei X, Ying Z, Yan L. Theoretical exploration on switchable NLO response induced by redox properties of polyoxometalates [XNbW 11O 40] n-/(n+1)- (X = Al, Si, P, S, Ga, Ge, As, Se). J Mol Graph Model 2018; 81:155-161. [PMID: 29554492 DOI: 10.1016/j.jmgm.2018.02.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Revised: 02/22/2018] [Accepted: 02/23/2018] [Indexed: 10/17/2022]
Abstract
Calculations based on density functional theory (DFT) have been performed to investigate the relationship between redox properties and second-order nonlinear optical (NLO) responses of Keggin-type anions [XNbW11O40]n- (X = Al, Si, P, S, Ga, Ge, As, Se) and their corresponding heteropoly blues. The frontier molecular orbitals, NLO responses and electronic transition properties of fully oxidized anions and heteropoly blues were discussed. It is noticeable that the second-order NLO behaviors can be switched by reduced electrons for these Keggin-type anions. The calculated β0 value of heteropoly blues [XNbW11O40](n+1)- (X = P, As, S) are 21-23 times as large as those of fully oxidized anions [XNbW11O40]n- (X = P, As, S) according to CAM-B3LYP/6-31G* (LANL2DZ basis sets for metal atom) calculations in CH3CN. The aim of this work is to combine the attractive redox properties and NLO response of polyoxometalates to obtain the switchable NLO materials.
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Affiliation(s)
- Ting Zhang
- Scientific Instrument Center, Shanxi University, Taiyuan 030006, China
| | - Xuehong Wei
- Scientific Instrument Center, Shanxi University, Taiyuan 030006, China
| | - Zuo Ying
- Scientific Instrument Center, Shanxi University, Taiyuan 030006, China
| | - Likai Yan
- Institute of Functional Material Chemistry, Key Laboratory of Polyoxometalate Science of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China.
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29
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Aguado-Ureta S, Rodríguez-Hernández J, Del Campo A, Perez-Álvarez L, Ruiz-Rubio L, Vilas JL, Artetxe B, Reinoso S, Gutiérrez-Zorrilla JM. Immobilization of Polyoxometalates on Tailored Polymeric Surfaces. NANOMATERIALS (BASEL, SWITZERLAND) 2018; 8:E142. [PMID: 29498656 PMCID: PMC5869633 DOI: 10.3390/nano8030142] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Revised: 02/27/2018] [Accepted: 02/27/2018] [Indexed: 11/16/2022]
Abstract
Herein we describe the preparation of hybrid polymer-inorganic interfaces by the immobilization of polyoxometalate nanoclusters on functionalized polymer surfaces. The polymeric surfaces were made of polystyrene-b-poly(acrylic acid)/polystyrene (PS-b-PAA/PS) blends by spin coating on a silicon wafer. The functionalization of the polymer film was obtained by interfacial migration of the amphiphilic block copolymer toward the interface upon water vapor annealing. The carboxylic acid functional groups contained in the PAA block were then employed to anchor the [LnIII(α-SiW11O39)]5- polyoxometalates (Ln: Ce, Er). This purpose was achieved by immersing the films in aqueous solutions of the in situ-formed inorganic nanoclusters. X-ray photoelectron and confocal Raman spectroscopies, together with atomic force microscopy, confirmed the immobilization of the inorganic species at the interface.
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Affiliation(s)
- Saioa Aguado-Ureta
- Departamento de Química Inorgánica, Facultad de Ciencia y Tecnología, Universidad del País Vasco UPV/EHU, P.O. Box 644, 48080 Bilbao, Spain.
| | - Juan Rodríguez-Hernández
- Departamento de Química y Propiedades de Materiales Poliméricos, Instituto de Ciencia y Tecnología de Polímeros (ICTP-CSIC), C/Juan de la Cierva 3, 28006 Madrid, Spain.
| | - Adolfo Del Campo
- Departamento de Electrocerámica, Instituto de Cerámica y Vidrio (ICV-CSIC), C/Kelsen 5, 28049 Madrid, Spain.
| | - Leyre Perez-Álvarez
- Grupo de Química Macromolecular (LABQUIMAC), Departamento de Química Física, Facultad de Ciencia y Tecnología, Universidad del País Vasco UPV/EHU, P.O. Box 644, 48080 Bilbao, Spain.
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain.
| | - Leire Ruiz-Rubio
- Grupo de Química Macromolecular (LABQUIMAC), Departamento de Química Física, Facultad de Ciencia y Tecnología, Universidad del País Vasco UPV/EHU, P.O. Box 644, 48080 Bilbao, Spain.
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain.
| | - José Luis Vilas
- Grupo de Química Macromolecular (LABQUIMAC), Departamento de Química Física, Facultad de Ciencia y Tecnología, Universidad del País Vasco UPV/EHU, P.O. Box 644, 48080 Bilbao, Spain.
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain.
| | - Beñat Artetxe
- Departamento de Química Inorgánica, Facultad de Ciencia y Tecnología, Universidad del País Vasco UPV/EHU, P.O. Box 644, 48080 Bilbao, Spain.
| | - Santiago Reinoso
- Departamento de Química Inorgánica, Facultad de Ciencia y Tecnología, Universidad del País Vasco UPV/EHU, P.O. Box 644, 48080 Bilbao, Spain.
| | - Juan M Gutiérrez-Zorrilla
- Departamento de Química Inorgánica, Facultad de Ciencia y Tecnología, Universidad del País Vasco UPV/EHU, P.O. Box 644, 48080 Bilbao, Spain.
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain.
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30
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Schönweiz S, Heiland M, Anjass M, Jacob T, Rau S, Streb C. Experimental and Theoretical Investigation of the Light-Driven Hydrogen Evolution by Polyoxometalate-Photosensitizer Dyads. Chemistry 2017; 23:15370-15376. [PMID: 28763122 DOI: 10.1002/chem.201702116] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Indexed: 11/10/2022]
Abstract
The visible-light-driven hydrogen evolution reaction (HER) by covalent photosensitizer-catalyst dyads is one of the most elegant concepts in supramolecular homogeneous solar energy conversion. The intricacies of catalyst reactivity and photosensitizer-catalyst interactions require a detailed fundamental understanding of the system to rationalize the observed reactivities. Here, we report three dyads based on the covalent imine-bond linkage of an iridium photosensitizer and an organo-functionalized Anderson polyoxometalate anion [MMo6 O18 {(OCH2 )3 CNH2 }2 ]3- (M=Mn3+ , Fe3+ , Co3+ ). Modification of the central metal ion M is used to modulate the HER activity. Detailed theoretical and experimental studies examine the role of the central metal ion M and provide critical understanding of the redox activity and light-driven HER activity of the novel dyads. Thus, the study enables a knowledge-based optimization of HER dyads by chemical modification of the reactive metal oxide components.
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Affiliation(s)
- Stefanie Schönweiz
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Magdalena Heiland
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Montaha Anjass
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany.,Institute of Electrochemistry, Ulm University, Albert-Einstein-Allee 47, 89081, Ulm, Germany
| | - Timo Jacob
- Institute of Electrochemistry, Ulm University, Albert-Einstein-Allee 47, 89081, Ulm, Germany
| | - Sven Rau
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Carsten Streb
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
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31
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Hu J, Diao H, Luo W, Song YF. Dawson-Type Polyoxomolybdate Anions (P2
Mo18
O62
6−
) Captured by Ionic Liquid on Graphene Oxide as High-Capacity Anode Material for Lithium-Ion Batteries. Chemistry 2017; 23:8729-8735. [DOI: 10.1002/chem.201701121] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Jun Hu
- State Key Laboratory of Chemical Resource Engineering; Beijing University of Chemical Technology; 100029 Beijing P. R. China
| | - Hongling Diao
- State Key Laboratory of Chemical Resource Engineering; Beijing University of Chemical Technology; 100029 Beijing P. R. China
| | - Wenjing Luo
- State Key Laboratory of Chemical Resource Engineering; Beijing University of Chemical Technology; 100029 Beijing P. R. China
| | - Yu-Fei Song
- State Key Laboratory of Chemical Resource Engineering; Beijing University of Chemical Technology; 100029 Beijing P. R. China
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering; Beijing University of Chemical Technology; 100029 Beijing P. R. China
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32
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Ma D, Zhou N, Zhang T, Hu K, Ma X, Gu N. Photoresponsive smart hydrogel microsphere via host-guest interaction for 3D cell culture. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.02.073] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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33
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Wang Y, Liu X, Xu W, Yue Y, Li B, Wu L. Triol-Ligand Modification and Structural Transformation of Anderson–Evans Oxomolybdates via Modulating Oxidation State of Co-Heteroatom. Inorg Chem 2017; 56:7019-7028. [DOI: 10.1021/acs.inorgchem.7b00614] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yang Wang
- State Key Laboratory of Supramolecular Structure and Materials, ‡Institute of Theoretical Chemistry, and §State Key Laboratory of Inorganic Synthesis & Preparative Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Xiaoting Liu
- State Key Laboratory of Supramolecular Structure and Materials, ‡Institute of Theoretical Chemistry, and §State Key Laboratory of Inorganic Synthesis & Preparative Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Wei Xu
- State Key Laboratory of Supramolecular Structure and Materials, ‡Institute of Theoretical Chemistry, and §State Key Laboratory of Inorganic Synthesis & Preparative Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Ying Yue
- State Key Laboratory of Supramolecular Structure and Materials, ‡Institute of Theoretical Chemistry, and §State Key Laboratory of Inorganic Synthesis & Preparative Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Bao Li
- State Key Laboratory of Supramolecular Structure and Materials, ‡Institute of Theoretical Chemistry, and §State Key Laboratory of Inorganic Synthesis & Preparative Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Lixin Wu
- State Key Laboratory of Supramolecular Structure and Materials, ‡Institute of Theoretical Chemistry, and §State Key Laboratory of Inorganic Synthesis & Preparative Chemistry, Jilin University, Changchun 130012, P. R. China
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34
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Vanhaecht S, Quanten T, Parac-Vogt TN. A Simple Nucleophilic Substitution as a Versatile Postfunctionalization Method for the Coupling of Nucleophiles to an Anderson-Type Polyoxometalate. Inorg Chem 2017; 56:3095-3101. [DOI: 10.1021/acs.inorgchem.6b03131] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Stef Vanhaecht
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F − bus 2404, 3001 Leuven, Belgium
| | - Thomas Quanten
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F − bus 2404, 3001 Leuven, Belgium
| | - Tatjana N. Parac-Vogt
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F − bus 2404, 3001 Leuven, Belgium
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35
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Schönweiz S, Sorsche D, Schwarz B, Rau S, Streb C. Structural and reactivity insights into covalently linked Cu(i) complex-Anderson polyoxometalates. Dalton Trans 2017; 46:9760-9764. [DOI: 10.1039/c7dt02316b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Synthesis, single-crystal X-ray diffraction structures and reactivity information is reported for covalently linked photoactive metal complex – polyoxometalate aggregates.
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Affiliation(s)
- S. Schönweiz
- Institute of Inorganic Chemistry I
- Ulm University
- 89081 Ulm
- Germany
| | - D. Sorsche
- Institute of Inorganic Chemistry I
- Ulm University
- 89081 Ulm
- Germany
| | - B. Schwarz
- Institute of Inorganic Chemistry I
- Ulm University
- 89081 Ulm
- Germany
| | - S. Rau
- Institute of Inorganic Chemistry I
- Ulm University
- 89081 Ulm
- Germany
| | - C. Streb
- Institute of Inorganic Chemistry I
- Ulm University
- 89081 Ulm
- Germany
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36
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Bayaguud A, Li J, She S, Wei Y. A simple synthetic route to polyoxovanadate-based organic–inorganic hybrids using EEDQ as an ester coupling agent. Dalton Trans 2017; 46:4602-4608. [DOI: 10.1039/c7dt00274b] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A simple synthetic strategy for the post-functionalization of organically derivatized hexavanadates is presented.
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Affiliation(s)
- Aruuhan Bayaguud
- Key Lab of Organic Optoelectronics & Molecular Engineering of Ministry of Education
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- China
| | - JianDa Li
- Key Lab of Organic Optoelectronics & Molecular Engineering of Ministry of Education
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- China
| | - Shan She
- Key Lab of Organic Optoelectronics & Molecular Engineering of Ministry of Education
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- China
| | - Yongge Wei
- Key Lab of Organic Optoelectronics & Molecular Engineering of Ministry of Education
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- China
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37
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Vanhaecht S, Quanten T, Parac-Vogt TN. A mild post-functionalization method for the vanadium substituted P2W15V3 Wells–Dawson polyoxometalate based on a copper catalyzed azide–alkyne cycloaddition. Dalton Trans 2017; 46:10215-10219. [DOI: 10.1039/c7dt02450a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A novel post-functionalization method for the vanadium substituted P2W15V3 Wells–Dawson polyoxometalate has been developed using a copper catalyzed azide–alkyne cycloaddition.
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Affiliation(s)
- S. Vanhaecht
- Department of Chemistry
- KU Leuven
- 3001 Leuven
- Belgium
| | - T. Quanten
- Department of Chemistry
- KU Leuven
- 3001 Leuven
- Belgium
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38
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Sun T, Cui W, Yan M, Qin G, Guo W, Gu H, Liu S, Wu Q. Target Delivery of a Novel Antitumor Organoplatinum(IV)-Substituted Polyoxometalate Complex for Safer and More Effective Colorectal Cancer Therapy In Vivo. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:7397-7404. [PMID: 27309631 DOI: 10.1002/adma.201601778] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2016] [Revised: 05/11/2016] [Indexed: 06/06/2023]
Abstract
An inactive organoplatinum(IV)-substituted polyoxometalate is developed as an efficient and nontoxic prodrug with significant potential for treating human colorectal cancers. Further encapsulation of Pt(IV) -PW11 with DSPE-PEG2000 nanoparticles (NPs) enables targeted delivery and controlled release of inactive prodrug. Such Pt(IV) -PW11 -DSPE-PEG2000 NPs are highly efficient in inhibiting cellular growth of HT29 cells and treating human colorectal cancer in mice, superior to classic cisplatin.
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Affiliation(s)
- Tiedong Sun
- Key Laboratory of Microsystems and Microstructures Manufacturing, Ministry of Education, Harbin Institute of Technology, Harbin, 150080, P. R. China
- School of Life Science and Technology, Harbin Institute of Technology, Harbin, 150080, P. R. China
| | - Wei Cui
- School of Life Science and Technology, Harbin Institute of Technology, Harbin, 150080, P. R. China
| | - Mei Yan
- Key Laboratory of Microsystems and Microstructures Manufacturing, Ministry of Education, Harbin Institute of Technology, Harbin, 150080, P. R. China
| | - Geng Qin
- School of Life Science and Technology, Harbin Institute of Technology, Harbin, 150080, P. R. China
| | - Wei Guo
- Key Laboratory of Microsystems and Microstructures Manufacturing, Ministry of Education, Harbin Institute of Technology, Harbin, 150080, P. R. China
- School of Life Science and Technology, Harbin Institute of Technology, Harbin, 150080, P. R. China
| | - Hongxi Gu
- Key Laboratory of Microsystems and Microstructures Manufacturing, Ministry of Education, Harbin Institute of Technology, Harbin, 150080, P. R. China
- School of Life Science and Technology, Harbin Institute of Technology, Harbin, 150080, P. R. China
| | - Shaoqin Liu
- Key Laboratory of Microsystems and Microstructures Manufacturing, Ministry of Education, Harbin Institute of Technology, Harbin, 150080, P. R. China.
| | - Qiong Wu
- School of Life Science and Technology, Harbin Institute of Technology, Harbin, 150080, P. R. China.
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39
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Izzet G, Volatron F, Proust A. Tailor-made Covalent Organic-Inorganic Polyoxometalate Hybrids: Versatile Platforms for the Elaboration of Functional Molecular Architectures. CHEM REC 2016; 17:250-266. [PMID: 27546462 DOI: 10.1002/tcr.201600092] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Indexed: 11/08/2022]
Abstract
Post-functionalization of organically modified polyoxometalates (POMs) is a powerful synthetic tool to devise functional building blocks for the rational elaboration of POM-based molecular materials. In this personal account we focus on iodoaryl-terminated POM platforms, describe reliable routes to the synthesis of covalent organic-inorganic POM-based hybrids and their integration into advanced molecular architectures or multi-scale assemblies as well as their immobilization onto surfaces. Valorisation of the remarkable redox properties of POMs in the fields of artificial synthesis and molecular electronic is especially considered.
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Affiliation(s)
- Guillaume Izzet
- Institut Parisien de Chimie Moléculaire UMR CNRS 8232, Sorbonne Universités, UPMC-Paris06, 4 Place Jussieu, F-75005, Paris, France
| | - Florence Volatron
- Institut Parisien de Chimie Moléculaire UMR CNRS 8232, Sorbonne Universités, UPMC-Paris06, 4 Place Jussieu, F-75005, Paris, France
| | - Anna Proust
- Institut Parisien de Chimie Moléculaire UMR CNRS 8232, Sorbonne Universités, UPMC-Paris06, 4 Place Jussieu, F-75005, Paris, France
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40
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Wang Y, Li B, Qian H, Wu L. Controlled Triol-Derivative Bonding and Decoration Transformation on Cu-Centered Anderson–Evans Polyoxometalates. Inorg Chem 2016; 55:4271-7. [DOI: 10.1021/acs.inorgchem.6b00008] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yang Wang
- State Key Laboratory
of Supramolecular Structure and Materials, Jilin University, Changchun 130012, P. R. China
| | - Bao Li
- State Key Laboratory
of Supramolecular Structure and Materials, Jilin University, Changchun 130012, P. R. China
| | - Hujun Qian
- State Key Laboratory
of Supramolecular Structure and Materials, Jilin University, Changchun 130012, P. R. China
| | - Lixin Wu
- State Key Laboratory
of Supramolecular Structure and Materials, Jilin University, Changchun 130012, P. R. China
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41
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Xiao Z, Chen K, Wu B, Li W, Wu P, Wei Y. An Easy Way to Construct Polyoxovanadate-Based Organic-Inorganic Hybrids by Stepwise Functionalization. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201501297] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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42
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Blazevic A, Rompel A. The Anderson–Evans polyoxometalate: From inorganic building blocks via hybrid organic–inorganic structures to tomorrows “Bio-POM”. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2015.07.001] [Citation(s) in RCA: 163] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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43
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Saad A, Anwar N, Rousseau G, Mialane P, Marrot J, Haouas M, Taulelle F, Mc Cormac T, Dolbecq A. Covalent Attachment of Thiophene Groups to Polyoxomolybdates or Polyoxotungstates for the Formation of Hybrid Films. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500660] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ali Saad
- Institut Lavoisier de Versailles, UMR 8180, Université de Versailles St‐Quentin en Yvelines, 45 Avenue des Etats‐Unis, 78035 Versailles cedex, France, http://www.ilv.uvsq.fr/recherche/Somo/somo.html
| | - Nargis Anwar
- Dundalk Institute of Technology, Dublin Road, Dundalk, County Louth, Ireland, http://www.dkit.ie/users/dr‐tim‐mc‐cormac
| | - Guillaume Rousseau
- Institut Lavoisier de Versailles, UMR 8180, Université de Versailles St‐Quentin en Yvelines, 45 Avenue des Etats‐Unis, 78035 Versailles cedex, France, http://www.ilv.uvsq.fr/recherche/Somo/somo.html
| | - Pierre Mialane
- Institut Lavoisier de Versailles, UMR 8180, Université de Versailles St‐Quentin en Yvelines, 45 Avenue des Etats‐Unis, 78035 Versailles cedex, France, http://www.ilv.uvsq.fr/recherche/Somo/somo.html
| | - Jérôme Marrot
- Institut Lavoisier de Versailles, UMR 8180, Université de Versailles St‐Quentin en Yvelines, 45 Avenue des Etats‐Unis, 78035 Versailles cedex, France, http://www.ilv.uvsq.fr/recherche/Somo/somo.html
| | - Mohamed Haouas
- Institut Lavoisier de Versailles, UMR 8180, Université de Versailles St‐Quentin en Yvelines, 45 Avenue des Etats‐Unis, 78035 Versailles cedex, France, http://www.ilv.uvsq.fr/recherche/Somo/somo.html
| | - Francis Taulelle
- Institut Lavoisier de Versailles, UMR 8180, Université de Versailles St‐Quentin en Yvelines, 45 Avenue des Etats‐Unis, 78035 Versailles cedex, France, http://www.ilv.uvsq.fr/recherche/Somo/somo.html
| | - Timothy Mc Cormac
- Dundalk Institute of Technology, Dublin Road, Dundalk, County Louth, Ireland, http://www.dkit.ie/users/dr‐tim‐mc‐cormac
| | - Anne Dolbecq
- Institut Lavoisier de Versailles, UMR 8180, Université de Versailles St‐Quentin en Yvelines, 45 Avenue des Etats‐Unis, 78035 Versailles cedex, France, http://www.ilv.uvsq.fr/recherche/Somo/somo.html
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44
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Fu L, Gao H, Yan M, Li S, Li X, Dai Z, Liu S. Polyoxometalate-Based Organic-Inorganic Hybrids as Antitumor Drugs. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:2938-45. [PMID: 25721026 DOI: 10.1002/smll.201500232] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2015] [Indexed: 05/08/2023]
Abstract
Polyoxometalates (POMs) have shown encouraging antitumor activity. However, their cytotoxicity in normal cells and unspecific interactions with biomolecules are two major obstacles that impede the practical applications of POMs in clinical cancer treatment. Derivatization of POMs with more biocompatible organic ligands is expected to cause a synergetic effect and achieve improved bioactivity and biospecificity. Herein, the synthesis of an amphiphilic organic-inorganic hybrid is reported by grafting a long-chain organoalkoxysilane lipid onto a POM. The amphiphilic POM hybrid could spontaneously assemble into the vesicles and exhibits enhanced antitumor activity for human colorectal cancer cell lines (HT29) compared to that of parent POMs. This detailed study reveals that the amphiphilic nature of POM hybrids enables the as-formed vesicles to easily bind to the cell membranes and then be uptaken by the cells, thus leading to a substantial increase in antitumor activity. Such prominent antitumor action is mostly accomplished via cell apoptosis, which ultimately results in cell death. Our finding demonstrates that novel POM hybrids-based drugs with increased bioactivity could be obtained by decorating POMs with selective organic ligands.
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Affiliation(s)
- Lei Fu
- Key Laboratory of Microsystems and Micronanostructures Manufacturing (Harbin Institute of Technology), Ministry of Education, Harbin, 150080, P.R. China
- School of Life Science and Technology, Harbin Institute of Technology, Harbin, 150080, P.R. China
| | - Hanqin Gao
- Key Laboratory of Microsystems and Micronanostructures Manufacturing (Harbin Institute of Technology), Ministry of Education, Harbin, 150080, P.R. China
| | - Mei Yan
- Key Laboratory of Microsystems and Micronanostructures Manufacturing (Harbin Institute of Technology), Ministry of Education, Harbin, 150080, P.R. China
| | - Shouzhu Li
- School of Life Science and Technology, Harbin Institute of Technology, Harbin, 150080, P.R. China
| | - Xinyu Li
- Key Laboratory of Microsystems and Micronanostructures Manufacturing (Harbin Institute of Technology), Ministry of Education, Harbin, 150080, P.R. China
| | - Zhifei Dai
- School of Life Science and Technology, Harbin Institute of Technology, Harbin, 150080, P.R. China
| | - Shaoqin Liu
- Key Laboratory of Microsystems and Micronanostructures Manufacturing (Harbin Institute of Technology), Ministry of Education, Harbin, 150080, P.R. China
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45
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46
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Macdonell A, Johnson NAB, Surman AJ, Cronin L. Configurable Nanosized Metal Oxide Oligomers via Precise “Click” Coupling Control of Hybrid Polyoxometalates. J Am Chem Soc 2015; 137:5662-5. [DOI: 10.1021/jacs.5b02466] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Andrew Macdonell
- WestCHEM,
School of Chemistry, University of Glasgow, University Avenue, Glasgow G12 8QQ, United Kingdom
| | - Naomi A. B. Johnson
- WestCHEM,
School of Chemistry, University of Glasgow, University Avenue, Glasgow G12 8QQ, United Kingdom
| | - Andrew J. Surman
- WestCHEM,
School of Chemistry, University of Glasgow, University Avenue, Glasgow G12 8QQ, United Kingdom
| | - Leroy Cronin
- WestCHEM,
School of Chemistry, University of Glasgow, University Avenue, Glasgow G12 8QQ, United Kingdom
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47
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Zhang J, Luo J, Wang P, Ding B, Huang Y, Zhao Z, Zhang J, Wei Y. Step-by-step strategy from achiral precursors to polyoxometalates-based chiral organic-inorganic hybrids. Inorg Chem 2015; 54:2551-9. [PMID: 25742440 DOI: 10.1021/ic502622k] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Using two types of triol ligands, several novel asymmetrically triol-functionalized Anderson organic hybrids have been efficiently synthesized in high purity and good yields via a convenient two-step esterification reaction. These organic-inorganic hybrids are chiral and can be spontaneously resolved with suitable solvents. Their molecular and crystal structures have been confirmed by single-crystal X-ray diffraction studies. Stable solid-state chirality of the corresponding enantiopure crystals has also been confirmed definitively by CD spectra. Interestingly, these organic-inorganic hybrids possess a layer-by-layer structure, forming solvent-accessible nanoscale chiral channels via a 1D infinite helical chain substructure. TGA measurements indicated that the species of the central heteroatoms significantly effects the stability of these compounds.
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Affiliation(s)
- Jiangwei Zhang
- Department of Chemistry, Tsinghua University , Beijing 100084, P. R. China
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48
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Olivares-Navarrete R, Rodil SE, Hyzy SL, Dunn GR, Almaguer-Flores A, Schwartz Z, Boyan BD. Role of integrin subunits in mesenchymal stem cell differentiation and osteoblast maturation on graphitic carbon-coated microstructured surfaces. Biomaterials 2015; 51:69-79. [PMID: 25770999 DOI: 10.1016/j.biomaterials.2015.01.035] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Revised: 12/26/2014] [Accepted: 01/20/2015] [Indexed: 12/20/2022]
Abstract
Surface roughness, topography, chemistry, and energy promote osteoblast differentiation and increase osteogenic local factor production in vitro and bone-to-implant contact in vivo, but the mechanisms involved are not well understood. Knockdown of integrin heterodimer alpha2beta1 (α2β1) blocks the osteogenic effects of the surface, suggesting signaling by this integrin homodimer is required. The purpose of the present study was to separate effects of surface chemistry and surface structure on integrin expression by coating smooth or rough titanium (Ti) substrates with graphitic carbon, retaining surface morphology but altering surface chemistry. Ti surfaces (smooth [Ra < 0.4 μm], rough [Ra ≥ 3.4 μm]) were sputter-coated using a magnetron sputtering system with an ultrapure graphite target, producing a graphitic carbon thin film. Human mesenchymal stem cells and MG63 osteoblast-like cells had higher mRNA for integrin subunits α1, α2, αv, and β1 on rough surfaces in comparison to smooth, and integrin αv on graphitic-carbon-coated rough surfaces in comparison to Ti. Osteogenic differentiation was greater on rough surfaces in comparison to smooth, regardless of chemistry. Silencing integrins β1, α1, or α2 decreased osteoblast maturation on rough surfaces independent of surface chemistry. Silencing integrin αv decreased maturation only on graphitic carbon-coated surfaces, not on Ti. These results suggest a major role of the integrin β1 subunit in roughness recognition, and that integrin alpha subunits play a major role in surface chemistry recognition.
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Affiliation(s)
- Rene Olivares-Navarrete
- Department of Biomedical Engineering, School of Engineering, Virginia Commonwealth University, Richmond, VA, USA
| | - Sandra E Rodil
- Instituto de Investigaciones en Materiales, Universidad Nacional Autonoma de Mexico, Mexico City, Mexico
| | - Sharon L Hyzy
- Department of Biomedical Engineering, School of Engineering, Virginia Commonwealth University, Richmond, VA, USA
| | - Ginger R Dunn
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | | | - Zvi Schwartz
- Department of Biomedical Engineering, School of Engineering, Virginia Commonwealth University, Richmond, VA, USA
| | - Barbara D Boyan
- Department of Biomedical Engineering, School of Engineering, Virginia Commonwealth University, Richmond, VA, USA; Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA, USA.
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49
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Satyanarayana VSV, Reddy PG, Pradeep CP. Synthesis, structure, self-assembly and genotoxicity evaluation of a series of Mn-Anderson cluster based polyoxometalate–organic hybrids. RSC Adv 2015. [DOI: 10.1039/c5ra07581e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A new series of POM–organic hybrids have been developed which show less genotoxicity compared to the parent polyoxometalate cluster.
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50
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Khan RNN, Lv C, Zhang J, Hao J, Wei Y. N-alkylation of organo-imido substituted polyoxometalates: an efficient and stoichiometric approach for the easy post-modification of polyoxometalates. Dalton Trans 2015; 44:4568-75. [DOI: 10.1039/c4dt03637a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
A high-yield post-functionalization protocol developed here provides an easy inclusion of the desired organic groups on a POM's highly negative surface.
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Affiliation(s)
| | - Chunlin Lv
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- China
| | - Jin Zhang
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- China
| | - Jian Hao
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- China
| | - Yongge Wei
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- China
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