1
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Wang J, Liu Y, Yuan Z, Li L, Ma P, Wang J, Niu J. Visible-Light-Responsive Polyoxometalate@Metal-Organic Frameworks Involving Ir Metalloligands for Highly Selective Photocatalytic Oxidation of Sulfides to Sulfoxide. Chemistry 2024; 30:e202303401. [PMID: 38057690 DOI: 10.1002/chem.202303401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 12/05/2023] [Accepted: 12/06/2023] [Indexed: 12/08/2023]
Abstract
The synthesis of highly efficient visible-light-responsive photocatalysts is fundamental to solving the problems of low efficiency and poor selectivity in photocatalytic organic synthesis reactions. We synthesized a crystalline polyoxometalate @metal-organic framework material {Zn4 (H2 O)8 [Ir(ppy)2 (dcbpy)]4 [SiW12 O40 ]} ⋅ 4H2 O (Ir-SiW) by self-assembly of Ir metalloligands with POMs. The introduction of Ir metalloligands extends the light absorbing range to visible light, improving the efficient utilization of solar energy. The transfer of photogenerated electrons from Ir metalloligands to SiW12 was observed under visible light irradiation, which boosted the carrier separation efficiency. The synergistic effect of the two components increased the photocatalytic thioether oxidation activity, and the product methyl phenyl sulfoxide for 2.5 h under visible light irradiation (λ >400 nm) reached 99.5 %, which was higher than those of other POM-based photocatalysts. Meanwhile, the yield of methyl phenyl sulfoxide was still higher than 97 % after three cycles, demonstrating the high stability and reusability of Ir-SiW.
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Affiliation(s)
- Jing Wang
- Henan Key Laboratory of Polyoxometalate Chemistry College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan, 475004, P. R. China
| | - Yanan Liu
- Henan Key Laboratory of Polyoxometalate Chemistry College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan, 475004, P. R. China
- Puyang Institute of Technology, Henan University, Puyang, Henan, 457000, P. R. China
| | - Zelong Yuan
- Henan Key Laboratory of Polyoxometalate Chemistry College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan, 475004, P. R. China
| | - Luoning Li
- Henan Key Laboratory of Polyoxometalate Chemistry College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan, 475004, P. R. China
| | - Pengtao Ma
- Henan Key Laboratory of Polyoxometalate Chemistry College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan, 475004, P. R. China
| | - Jingping Wang
- Henan Key Laboratory of Polyoxometalate Chemistry College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan, 475004, P. R. China
| | - Jingyang Niu
- Henan Key Laboratory of Polyoxometalate Chemistry College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan, 475004, P. R. China
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2
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Jones CF, Hood BR, de Coene Y, Lopez-Poves I, Champagne B, Clays K, Fielden J. Bridge improvement work: maximising non-linear optical performance in polyoxometalate derivatives. Chem Commun (Camb) 2024; 60:1731-1734. [PMID: 38240142 DOI: 10.1039/d3cc05433k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
New phenyl and stilbene-bridged polyoxometalate (POM) charge-transfer chromophores with diphenylamino donor groups produce, respectively, the highest intrinsic and absolute quadratic hyperpolarisabilities measured for such species. The β0,zzz obtained for the phenyl bridge - at 180 × 10-30 esu - is remarkable for a short conjugated system while changing to the stilbene (260 × 10-30 esu) produces a substantial increase in non-linearity for a minimal red-shift in the absorption profile. Together with TD-DFT calculations, the results show that maximising conjugation in the π-bridge is vital to high performance in such "POMophores".
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Affiliation(s)
- Claire F Jones
- School of Chemistry, University of East Anglia, Norwich, NR4 7TJ, UK
| | - Bethany R Hood
- School of Chemistry, University of East Anglia, Norwich, NR4 7TJ, UK
| | - Yovan de Coene
- Department of Chemistry, University of Leuven, Celestijnenlaan 200D, Leuven B-3001, Belgium
| | - Ivan Lopez-Poves
- School of Chemistry, University of East Anglia, Norwich, NR4 7TJ, UK
| | - Benoît Champagne
- Unit of Theoretical and Structural Physical Chemistry, Namur Institute of Structured Matter, University of Namur, Namur B-5000, Belgium
| | - Koen Clays
- Department of Chemistry, University of Leuven, Celestijnenlaan 200D, Leuven B-3001, Belgium
| | - John Fielden
- School of Chemistry, University of East Anglia, Norwich, NR4 7TJ, UK
- Department of Chemistry, Lancaster University, Lancaster, LA1 4YB, UK.
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3
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Choudhari M, Xu J, McKay AI, Guerrin C, Forsyth C, Ma HZ, Goerigk L, O'Hair RAJ, Bonnefont A, Ruhlmann L, Aloise S, Ritchie C. A photo-switchable molecular capsule: sequential photoinduced processes. Chem Sci 2022; 13:13732-13740. [PMID: 36544719 PMCID: PMC9710229 DOI: 10.1039/d2sc04613j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Accepted: 10/21/2022] [Indexed: 12/24/2022] Open
Abstract
The metastable trilacunary heteropolyoxomolybdate [PMo9O31(py)3]3- - {PMo9}; py = pyridine) and the ditopic pyridyl bearing diarylethene (DAE) (C25H16N2F6S2) self-assemble via a facile ligand replacement methodology to yield the photo-active molecular capsule [(PMo9O31)2(DAE)3]6-. The spatial arrangement and conformation of the three DAE ligands are directed by the surface chemistry of the molecular metal oxide precursor with exclusive ligation of the photo-active antiparallel rotamer to the polyoxometalate (POM) while the integrity of the assembly in solution has been verified by a suite of spectroscopic techniques. Electrocyclisation of the three DAEs occurs sequentially and has been investigated using a combination of steady-state and time-resolved spectroscopies with the discovery of a photochemical cascade whereby rapid photoinduced ring closure is followed by electron transfer from the ring-closed DAE to the POM in the latent donor-acceptor system on subsequent excitation. This interpretation is also supported by computational and detailed spectroelectrochemical analysis. Ring-closing quantum yields were also determined using a custom quantum yield determination setup (QYDS), providing insight into the impact of POM coordination on these processes.
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Affiliation(s)
| | - Jingjing Xu
- School of Chemistry, Monash UniversityClaytonVictoria3800Australia,College of Chemistry and Materials Science, Shanghai Normal UniversityShanghai 200234China
| | | | - Clément Guerrin
- Université de Lille, CNRS, UMR 8516 – LASIRE – Laboratoire de Spectroscopie pour les Interactions, la Réactivité et l’EnvironnementLille F-59000France
| | - Craig Forsyth
- School of Chemistry, Monash UniversityClaytonVictoria3800Australia
| | - Howard Z. Ma
- School of Chemistry, University of MelbourneMelbourne3010VictoriaAustralia
| | - Lars Goerigk
- School of Chemistry, University of MelbourneMelbourne3010VictoriaAustralia
| | | | - Antoine Bonnefont
- Laboratoire d’Electrochimie et Chimie Physique du Corps Solide, Institut de Chimie de Strasbourg, UMR 7177 CNRS-Université de Strasbourg4, rue Blaise PascalStrasbourg 67000France
| | - Laurent Ruhlmann
- Laboratoire d’Electrochimie et Chimie Physique du Corps Solide, Institut de Chimie de Strasbourg, UMR 7177 CNRS-Université de Strasbourg4, rue Blaise PascalStrasbourg 67000France
| | - Stephane Aloise
- Université de Lille, CNRS, UMR 8516 – LASIRE – Laboratoire de Spectroscopie pour les Interactions, la Réactivité et l’EnvironnementLille F-59000France
| | - Chris Ritchie
- School of Chemistry, Monash UniversityClaytonVictoria3800Australia
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4
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Jornet-Mollá V, Martín-Mezquita C, Giménez-Saiz C, Romero FM. Zinc(II) picolinate-based coordination polymers as luminescent sensors of Fe3+ ions and nitroaromatic compounds. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.120993] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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5
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Laurans M, Mattera M, Salles R, K'Bidi L, Gouzerh P, Renaudineau S, Volatron F, Guillemot G, Blanchard S, Izzet G, Solé-Daura A, Poblet JM, Proust A. When Identification of the Reduction Sites in Mixed Molybdenum/Tungsten Keggin-Type Polyoxometalate Hybrids Turns Out Tricky. Inorg Chem 2022; 61:7700-7709. [PMID: 35549467 PMCID: PMC9234957 DOI: 10.1021/acs.inorgchem.2c00866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
![]()
The
mixed molybdenum/tungsten Keggin-type polyoxometalate (POM)
hybrid (TBA)4[PW9Mo2O39{Sn(C6H4I)}] (TBA = tert-butylammonium)
has been prepared by the reaction between [α-PW9Mo2O39]7– and [Cl3Sn(C6H4I)] in dried acetonitrile, in the presence of
tetra-n-butylammonium bromide. A further coupling
reaction affords the ferrocenyl derivative (TBA)4[PW9Mo2O39{Sn(C6H4)C≡C(C6H4)Fc}]. The POM hybrids have
been thoroughly characterized by NMR and IR spectroscopies. Electrochemical
analysis confirms their ease of reduction compared to the all-W analogue,
albeit with a second reduction process occurring at a lower potential
than in the all-Mo species. It is noteworthy that the second reduction
is accompanied by an unusual red shift of the electronic absorption
spectrum. Whereas there is no doubt that the first reduction deals
with Mo, the location of the second electron in the bireduced species,
on the second Mo or on W, has thus been the subject of a cross-investigation
by spectroelectrochemistry, electron spin resonance, and theoretical
calculations. Finally, it came out that the second reduction is also
Mo-centered with two unpaired and antiferromagnetically coupled extra
electrons. The sites for the successive reduction
processes of a mixed
molybdenum/tungsten Keggin-type organotin hybrid are debated through
a combination of spectroelectrochemical investigations and theoretical
calculations.
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Affiliation(s)
- Maxime Laurans
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS, 4 Place Jussieu, F-75005 Paris, France
| | - Michele Mattera
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS, 4 Place Jussieu, F-75005 Paris, France
| | - Raphaël Salles
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS, 4 Place Jussieu, F-75005 Paris, France
| | - Ludivine K'Bidi
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS, 4 Place Jussieu, F-75005 Paris, France
| | - Pierre Gouzerh
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS, 4 Place Jussieu, F-75005 Paris, France
| | - Séverine Renaudineau
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS, 4 Place Jussieu, F-75005 Paris, France
| | - Florence Volatron
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS, 4 Place Jussieu, F-75005 Paris, France
| | - Geoffroy Guillemot
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS, 4 Place Jussieu, F-75005 Paris, France
| | - Sébastien Blanchard
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS, 4 Place Jussieu, F-75005 Paris, France
| | - Guillaume Izzet
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS, 4 Place Jussieu, F-75005 Paris, France
| | - Albert Solé-Daura
- Department de Química Física i Inorgànica, Universitat Rovira i Virgili, Marcel-lí Domingo 1, 43007 Tarragona, Spain
| | - Josep M Poblet
- Department de Química Física i Inorgànica, Universitat Rovira i Virgili, Marcel-lí Domingo 1, 43007 Tarragona, Spain
| | - Anna Proust
- Institut Parisien de Chimie Moléculaire, Sorbonne Université, CNRS, 4 Place Jussieu, F-75005 Paris, France
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6
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A photosensitizer-polyoxometalate dyad that enables the decoupling of light and dark reactions for delayed on-demand solar hydrogen production. Nat Chem 2022; 14:321-327. [PMID: 35087218 DOI: 10.1038/s41557-021-00850-8] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Accepted: 10/26/2021] [Indexed: 11/08/2022]
Abstract
Decoupling the production of solar hydrogen from the diurnal cycle is a key challenge in solar energy conversion, the success of which could lead to sustainable energy schemes capable of delivering H2 independent of the time of day. Here, we report a fully integrated photochemical molecular dyad composed of a ruthenium-complex photosensitizer covalently linked to a Dawson polyoxometalate that acts as an electron-storage site and hydrogen-evolving catalyst. Visible-light irradiation of the system in solution leads to charge separation and electron storage on the polyoxometalate, effectively resulting in a liquid fuel. In contrast to related, earlier dyads, this system enables the harvesting, storage and delayed release of solar energy. On-demand hydrogen release is possible by adding a proton donor to the dyad solution. The system is a minimal molecular model for artificial photosynthesis and enables the spatial and temporal separation of light absorption, fuel storage and hydrogen release.
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7
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Smortsova Y, Falaise C, Fatima A, Ha-Thi MH, Méallet-Renault R, Steenkeste K, Al-Bacha S, Chaib T, Assaud L, Lepeltier M, Haouas M, Leclerc N, Pino T, Cadot E. Time-Resolved Spectroscopy and High-Efficiency Light-Driven Hydrogen Evolution of a {Mo 3 S 4 }-Containing Polyoxometalate-Based System. Chemistry 2021; 27:17094-17103. [PMID: 34590748 DOI: 10.1002/chem.202102693] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Indexed: 11/05/2022]
Abstract
Polyoxothiometalate ions (ThioPOM) are active hydrogen-evolution reaction (HER) catalysts based on modular assembly built from electrophilic clusters {MoSx } and vacant polyoxotungstates. Herein, the dumbbell-like anion [{(PW11 O39 )Mo3 S4 (H2 O)3 (OH)}2 ]8- exhibits very high light-driven HER activity, while the active cores {Mo3 S4 } do not contain any exposed disulfido ligands, which were suspected to be the origin of the HER activity. Moreover, in the catalyst architecture, the two central {Mo3 S4 } cores are sandwiched by two {PW11 O39 }7- subunits that act as oxidant-resistant protecting groups and behave as electron-collecting units. A detailed photophysical study was carried out confirming the reductive quenching mechanism of the photosensitizer [Ir(ppy)2 (dtbbpy)]+ by the sacrificial donor triethanolamine (TEOA) and highlighting the very high rate constant of the electron transfer from the reduced photosensitizer to the ThioPOM catalyst. Such results provide new insights into the field of molecular catalytic systems able to promote high HER activity.
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Affiliation(s)
- Yevheniia Smortsova
- ILV-CNRS UMR 8180, UVSQ, Université Paris-Saclay, 45, Avenue des Etats Unis, 78035, Versailles Cedex, France
| | - Clément Falaise
- ILV-CNRS UMR 8180, UVSQ, Université Paris-Saclay, 45, Avenue des Etats Unis, 78035, Versailles Cedex, France
| | - Anam Fatima
- ISMO-CNRS UMR 8214, Université Paris-Saclay, Rue André Rivière, 91400, Orsay, France
| | - Minh-Huong Ha-Thi
- ISMO-CNRS UMR 8214, Université Paris-Saclay, Rue André Rivière, 91400, Orsay, France
| | | | - Karine Steenkeste
- ISMO-CNRS UMR 8214, Université Paris-Saclay, Rue André Rivière, 91400, Orsay, France
| | - Serge Al-Bacha
- ICMMO-CNRS UMR 8182, Université Paris-Saclay, Rue du Doyen Georges Poitou, 91400, Orsay, France
| | - Tesnim Chaib
- ILV-CNRS UMR 8180, UVSQ, Université Paris-Saclay, 45, Avenue des Etats Unis, 78035, Versailles Cedex, France
| | - Loïc Assaud
- ICMMO-CNRS UMR 8182, Université Paris-Saclay, Rue du Doyen Georges Poitou, 91400, Orsay, France
| | - Marc Lepeltier
- ILV-CNRS UMR 8180, UVSQ, Université Paris-Saclay, 45, Avenue des Etats Unis, 78035, Versailles Cedex, France
| | - Mohamed Haouas
- ILV-CNRS UMR 8180, UVSQ, Université Paris-Saclay, 45, Avenue des Etats Unis, 78035, Versailles Cedex, France
| | - Nathalie Leclerc
- ILV-CNRS UMR 8180, UVSQ, Université Paris-Saclay, 45, Avenue des Etats Unis, 78035, Versailles Cedex, France
| | - Thomas Pino
- ISMO-CNRS UMR 8214, Université Paris-Saclay, Rue André Rivière, 91400, Orsay, France
| | - Emmanuel Cadot
- ILV-CNRS UMR 8180, UVSQ, Université Paris-Saclay, 45, Avenue des Etats Unis, 78035, Versailles Cedex, France
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8
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Cetindere S, Clausing ST, Anjass M, Luo Y, Kupfer S, Dietzek B, Streb C. Covalent Linkage of BODIPY-Photosensitizers to Anderson-Type Polyoxometalates Using CLICK Chemistry. Chemistry 2021; 27:17181-17187. [PMID: 34519409 PMCID: PMC9292257 DOI: 10.1002/chem.202102897] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Indexed: 11/18/2022]
Abstract
The covalent attachment of molecular photosensitizers (PS) to polyoxometalates (POMs) opens new pathways to PS‐POM dyads for light‐driven charge‐transfer and charge‐storage. Here, we report a synthetic route for the covalent linkage of BODIPY‐dyes to Anderson‐type polyoxomolybdates by using CLICK chemistry (i. e. copper‐catalyzed azide‐alkyne cycloaddition, CuAAC). Photophysical properties of the dyad were investigated by combined experimental and theoretical methods and highlight the role of both sub‐components for the charge‐separation properties. The study demonstrates how CLICK chemistry can be used for the versatile linkage of organic functional units to molecular metal oxide clusters.
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Affiliation(s)
- Seda Cetindere
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany.,Department of Chemistry, Faculty of Science, Gebze Technical University, 41400, Gebze/Kocaeli, Turkey
| | - Simon T Clausing
- 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.,Helmholtz-Institute Ulm, Helmholtzstr. 11, 89081, Ulm, Germany
| | - Yusen Luo
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany.,Department Functional Interfaces, Leibniz Institute of Photonic Technology (IPHT), Albert-Einstein-Strasse 9, 07745, Jena, Germany.,Center for Energy and Environmental Chemistry Jena (CEEC-Jena), Friedrich-Schiller University Jena, Philosophenweg 7a, 07743, Jena, Germany.,Current address: Department of Chemistry and Pharmacy, Interdisciplinary Center for Molecular Materials (ICMM), Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstr. 3, 91058, Erlangen, Germany
| | - Stephan Kupfer
- Institute of Physical Chemistry, Friedrich-Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany
| | - Benjamin Dietzek
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany.,Department Functional Interfaces, Leibniz Institute of Photonic Technology (IPHT), Albert-Einstein-Strasse 9, 07745, Jena, Germany.,Center for Energy and Environmental Chemistry Jena (CEEC-Jena), Friedrich-Schiller University Jena, Philosophenweg 7a, 07743, Jena, Germany
| | - Carsten Streb
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany.,Helmholtz-Institute Ulm, Helmholtzstr. 11, 89081, Ulm, Germany
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9
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Jornet-Mollá V, Dreessen C, Romero FM. Robust Lanthanoid Picolinate-Based Coordination Polymers for Luminescence and Sensing Applications. Inorg Chem 2021; 60:10572-10584. [PMID: 34229428 PMCID: PMC8454995 DOI: 10.1021/acs.inorgchem.1c01229] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Picolinate-based segmented dianionic ligands L12- (5-((4-carboxyphenyl)ethynyl)picolinate) and L22- (5,5'-(ethyne-1,2-diyl)dipicolinate) have been used in the synthesis of the highly robust and luminescent europium(III) coordination polymers [(CH3)2NH2][Eu(H2O)2(L1)2] (1) and [(CH3)2NH2][Eu(L2)2]·H2O·CH3COOH (2). Both 1 and 2 exhibit high selectivity for detection of nitroaromatic compounds since they act as quenchers of the Eu3+ emission. Stern-Volmer plots, using nitrobenzene as a quencher, yielded values of KSV = 150 M-1 and 160 M-1 for 1 and 2, respectively. Luminescence studies in the presence of different metal ions indicate a high selectivity for Fe3+ detection, with KSV values of 471 M-1 and 706 M-1 for 1 and 2, respectively. Both 1 and 2 possess extremely robust extended structures, leading to emissive properties that are stable in a wide pH range.
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Affiliation(s)
- Verónica Jornet-Mollá
- Instituto de Ciencia Molecular, Universitat de València, P.O. Box 22085, 46071 València, Spain
| | - Chris Dreessen
- Instituto de Ciencia Molecular, Universitat de València, P.O. Box 22085, 46071 València, Spain
| | - Francisco M Romero
- Instituto de Ciencia Molecular, Universitat de València, P.O. Box 22085, 46071 València, Spain
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10
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Zhu X, Hessin C, Salamé A, Sosa-Vargas L, Kreher D, Adachi C, Proust A, Mialane P, Marrot J, Bouchet A, Sliwa M, Méry S, Heinrich B, Mathevet F, Izzet G. Photoactive Organic/Inorganic Hybrid Materials with Nanosegregated Donor-Acceptor Arrays. Angew Chem Int Ed Engl 2021; 60:8419-8424. [PMID: 33448550 DOI: 10.1002/anie.202014319] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 01/14/2021] [Indexed: 11/07/2022]
Abstract
The synthesis of the first mesogenic donor-acceptor polyoxometalate (POM)-based hybrid is herein described. The structural and electronic properties of the hybrid compound were evaluated through combination of small- and wide-angle X-ray scattering, optical microscopy, electrochemistry and photoluminescence. In the solid state, the compound behaves as a birefringent solid, displaying a lamellar organization in which double-layers of POMs and bis(thiophene)thienothiophene organic donors alternate regularly. Noticeably, the sub-unit organizations in the composite are similar to that observed for the individual POM and organic donor precursors. Photophysical studies show that in the hybrid, the fluorescence of the organic donor unit is considerably quenched both in solution and in the solid state, which is attributed to occurrence of intramolecular charge-separated state.
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Affiliation(s)
- Xiaolei Zhu
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 4 Place Jussieu, 75005, Paris, France
| | - Cheriehan Hessin
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 4 Place Jussieu, 75005, Paris, France
| | - Aude Salamé
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 4 Place Jussieu, 75005, Paris, France
| | - Lydia Sosa-Vargas
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 4 Place Jussieu, 75005, Paris, France
| | - David Kreher
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 4 Place Jussieu, 75005, Paris, France
| | - Chihaya Adachi
- Center for Organic Photonics and Electronics Research (OPERA), Kyushu University, Fukuoka, Japan
| | - Anna Proust
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 4 Place Jussieu, 75005, Paris, France
| | - Pierre Mialane
- Université de Versailles Saint-Quentin en Yvelines, Institut Lavoisier Versailles, Université Paris Saclay, UMR CNRS 8180, 78035, Versailles cedex, France
| | - Jérome Marrot
- Université de Versailles Saint-Quentin en Yvelines, Institut Lavoisier Versailles, Université Paris Saclay, UMR CNRS 8180, 78035, Versailles cedex, France
| | - Aude Bouchet
- Univ. Lille, CNRS, UMR 8516, LASIRE, LAboratoire de Spectroscopie pour les Interactions, la Réactivité et l'Environnement, 59000, Lille, France
| | - Michel Sliwa
- Univ. Lille, CNRS, UMR 8516, LASIRE, LAboratoire de Spectroscopie pour les Interactions, la Réactivité et l'Environnement, 59000, Lille, France
| | - Stéphane Méry
- Université de Strasbourg, CNRS, Institut de Physique et Chimie des Matériaux de Strasbourg, UMR, 7504, Strasbourg, France
| | - Benoît Heinrich
- Université de Strasbourg, CNRS, Institut de Physique et Chimie des Matériaux de Strasbourg, UMR, 7504, Strasbourg, France
| | - Fabrice Mathevet
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 4 Place Jussieu, 75005, Paris, France.,Center for Organic Photonics and Electronics Research (OPERA), Kyushu University, Fukuoka, Japan
| | - Guillaume Izzet
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 4 Place Jussieu, 75005, Paris, France
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11
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Toupalas G, Karlsson J, Black FA, Masip-Sánchez A, López X, Ben M'Barek Y, Blanchard S, Proust A, Alves S, Chabera P, Clark IP, Pullerits T, Poblet JM, Gibson EA, Izzet G. Tuning Photoinduced Electron Transfer in POM-Bodipy Hybrids by Controlling the Environment: Experiment and Theory. Angew Chem Int Ed Engl 2021; 60:6518-6525. [PMID: 33350554 DOI: 10.1002/anie.202014677] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Indexed: 11/07/2022]
Abstract
The optical and electrochemical properties of a series of polyoxometalate (POM) oxoclusters decorated with two bodipy (boron-dipyrromethene) light-harvesting units were examined. Evaluated here in this polyanionic donor-acceptor system is the effect of the solvent and associated counterions on the intramolecular photoinduced electron transfer. The results show that both solvents and counterions have a major impact upon the energy of the charge-transfer state by modifying the solvation shell around the POMs. This modification leads to a significantly shorter charge separation time in the case of smaller counterion and slower charge recombination in a less polar solvent. These results were rationalized in terms of Marcus theory and show that solvent and counterion both affect the driving force for photoinduced electron transfer and the reorganization energy. This was corroborated with theoretical investigations combining DFT and molecular dynamics simulations.
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Affiliation(s)
- Georgios Toupalas
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 4 Place Jussieu, 75005, Paris, France
| | - Joshua Karlsson
- Energy Materials Laboratory, Chemistry, School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - Fiona A Black
- Energy Materials Laboratory, Chemistry, School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - Albert Masip-Sánchez
- Department de Química Física i Inorgànica, Universitat Rovira i Virgili, Marcel⋅lí Domingo 1, 43007, Tarragona, Spain
| | - Xavier López
- Department de Química Física i Inorgànica, Universitat Rovira i Virgili, Marcel⋅lí Domingo 1, 43007, Tarragona, Spain
| | - Youssef Ben M'Barek
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 4 Place Jussieu, 75005, Paris, France
| | - Sébastien Blanchard
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 4 Place Jussieu, 75005, Paris, France
| | - Anna Proust
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 4 Place Jussieu, 75005, Paris, France
| | - Sandra Alves
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 4 Place Jussieu, 75005, Paris, France
| | - Pavel Chabera
- Chemical Physics and NanoLund, Lund University, Box 124, 22241, Lund, Sweden
| | - Ian P Clark
- Central Laser Facility, Research Complex at Harwell, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Harwell Campus, Didcot, Oxfordshire, OX11 0QX, UK
| | - Tönu Pullerits
- Chemical Physics and NanoLund, Lund University, Box 124, 22241, Lund, Sweden
| | - Josep M Poblet
- Department de Química Física i Inorgànica, Universitat Rovira i Virgili, Marcel⋅lí Domingo 1, 43007, Tarragona, Spain
| | - Elizabeth A Gibson
- Energy Materials Laboratory, Chemistry, School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - Guillaume Izzet
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 4 Place Jussieu, 75005, Paris, France
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12
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Toupalas G, Karlsson J, Black FA, Masip‐Sánchez A, López X, Ben M'Barek Y, Blanchard S, Proust A, Alves S, Chabera P, Clark IP, Pullerits T, Poblet JM, Gibson EA, Izzet G. Tuning Photoinduced Electron Transfer in POM‐Bodipy Hybrids by Controlling the Environment: Experiment and Theory. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202014677] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Georgios Toupalas
- Sorbonne Université CNRS Institut Parisien de Chimie Moléculaire IPCM 4 Place Jussieu 75005 Paris France
| | - Joshua Karlsson
- Energy Materials Laboratory Chemistry, School of Natural and Environmental Sciences Newcastle University Newcastle upon Tyne NE1 7RU UK
| | - Fiona A. Black
- Energy Materials Laboratory Chemistry, School of Natural and Environmental Sciences Newcastle University Newcastle upon Tyne NE1 7RU UK
| | - Albert Masip‐Sánchez
- Department de Química Física i Inorgànica Universitat Rovira i Virgili Marcel⋅lí Domingo 1 43007 Tarragona Spain
| | - Xavier López
- Department de Química Física i Inorgànica Universitat Rovira i Virgili Marcel⋅lí Domingo 1 43007 Tarragona Spain
| | - Youssef Ben M'Barek
- Sorbonne Université CNRS Institut Parisien de Chimie Moléculaire IPCM 4 Place Jussieu 75005 Paris France
| | - Sébastien Blanchard
- Sorbonne Université CNRS Institut Parisien de Chimie Moléculaire IPCM 4 Place Jussieu 75005 Paris France
| | - Anna Proust
- Sorbonne Université CNRS Institut Parisien de Chimie Moléculaire IPCM 4 Place Jussieu 75005 Paris France
| | - Sandra Alves
- Sorbonne Université CNRS Institut Parisien de Chimie Moléculaire IPCM 4 Place Jussieu 75005 Paris France
| | - Pavel Chabera
- Chemical Physics and NanoLund Lund University Box 124 22241 Lund Sweden
| | - Ian P. Clark
- Central Laser Facility Research Complex at Harwell Science and Technology Facilities Council Rutherford Appleton Laboratory Harwell Campus Didcot Oxfordshire OX11 0QX UK
| | - Tönu Pullerits
- Chemical Physics and NanoLund Lund University Box 124 22241 Lund Sweden
| | - Josep M. Poblet
- Department de Química Física i Inorgànica Universitat Rovira i Virgili Marcel⋅lí Domingo 1 43007 Tarragona Spain
| | - Elizabeth A. Gibson
- Energy Materials Laboratory Chemistry, School of Natural and Environmental Sciences Newcastle University Newcastle upon Tyne NE1 7RU UK
| | - Guillaume Izzet
- Sorbonne Université CNRS Institut Parisien de Chimie Moléculaire IPCM 4 Place Jussieu 75005 Paris France
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13
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Zhu X, Hessin C, Salamé A, Sosa‐Vargas L, Kreher D, Adachi C, Proust A, Mialane P, Marrot J, Bouchet A, Sliwa M, Méry S, Heinrich B, Mathevet F, Izzet G. Photoactive Organic/Inorganic Hybrid Materials with Nanosegregated Donor–Acceptor Arrays. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202014319] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Xiaolei Zhu
- Sorbonne Université CNRS Institut Parisien de Chimie Moléculaire IPCM 4 Place Jussieu 75005 Paris France
| | - Cheriehan Hessin
- Sorbonne Université CNRS Institut Parisien de Chimie Moléculaire IPCM 4 Place Jussieu 75005 Paris France
| | - Aude Salamé
- Sorbonne Université CNRS Institut Parisien de Chimie Moléculaire IPCM 4 Place Jussieu 75005 Paris France
| | - Lydia Sosa‐Vargas
- Sorbonne Université CNRS Institut Parisien de Chimie Moléculaire IPCM 4 Place Jussieu 75005 Paris France
| | - David Kreher
- Sorbonne Université CNRS Institut Parisien de Chimie Moléculaire IPCM 4 Place Jussieu 75005 Paris France
| | - Chihaya Adachi
- Center for Organic Photonics and Electronics Research (OPERA) Kyushu University Fukuoka Japan
| | - Anna Proust
- Sorbonne Université CNRS Institut Parisien de Chimie Moléculaire IPCM 4 Place Jussieu 75005 Paris France
| | - Pierre Mialane
- Université de Versailles Saint-Quentin en Yvelines Institut Lavoisier Versailles Université Paris Saclay UMR CNRS 8180 78035 Versailles cedex France
| | - Jérome Marrot
- Université de Versailles Saint-Quentin en Yvelines Institut Lavoisier Versailles Université Paris Saclay UMR CNRS 8180 78035 Versailles cedex France
| | - Aude Bouchet
- Univ. Lille CNRS, UMR 8516 LASIRE LAboratoire de Spectroscopie pour les Interactions, la Réactivité et l'Environnement 59000 Lille France
| | - Michel Sliwa
- Univ. Lille CNRS, UMR 8516 LASIRE LAboratoire de Spectroscopie pour les Interactions, la Réactivité et l'Environnement 59000 Lille France
| | - Stéphane Méry
- Université de Strasbourg CNRS Institut de Physique et Chimie des Matériaux de Strasbourg UMR 7504 Strasbourg France
| | - Benoît Heinrich
- Université de Strasbourg CNRS Institut de Physique et Chimie des Matériaux de Strasbourg UMR 7504 Strasbourg France
| | - Fabrice Mathevet
- Sorbonne Université CNRS Institut Parisien de Chimie Moléculaire IPCM 4 Place Jussieu 75005 Paris France
- Center for Organic Photonics and Electronics Research (OPERA) Kyushu University Fukuoka Japan
| | - Guillaume Izzet
- Sorbonne Université CNRS Institut Parisien de Chimie Moléculaire IPCM 4 Place Jussieu 75005 Paris France
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14
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Huo Z, Liang Y, Yang S, Zang D, Farha R, Goldmann M, Xu H, Antoine B, Matricardi E, Izzet G, Proust A, Ruhlmann L. Photocurrent generation from visible light irradiation of covalent polyoxometalate–porphyrin copolymers. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2020.137635] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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15
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Pütt R, Kozłowski P, Werner I, Griebel J, Schmitz S, Warneke J, Monakhov KY. {P 2V 3W 15}-Polyoxometalates Functionalized with Phthalocyaninato Y and Yb Moieties. Inorg Chem 2021; 60:80-86. [PMID: 33180468 DOI: 10.1021/acs.inorgchem.0c02257] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A tris(alkoxo)pyridine-augmented Wells-Dawson polyoxometalate (nBu4N)6[WD-Py] (WD = P2V3W15O59(OCH2)3C, Py = C5H4N) was functionalized with phthalocyaninato metal moieties (MPc where M = Y or Yb and Pc = C32H16N8) to afford (nBu4N)4[HWD-Py(MPc)] compounds. High-resolution mass spectrometry was used to detect and identify the hybrid assembly. The magnetism studies reveal substantial differences between M = Yb (monomeric, single-ion paramagnetism) and M = Y (containing dimers, radical character). The results of electronic paramagnetic resonance spectroscopy, SQUID magnetometry, and magnetochemical calculations indicate the presence of intramolecular charge transfer from the MPc moiety to the polyoxometalate and of intermolecular charge transfer from the MPc moiety of one molecule to the polyoxometalate unit of another molecule. These compounds with identified VIV ions represent unique examples of transition-metal/lanthanide complex-POM hybrid compounds with nonphotoinduced charge transfer between electron donor and acceptor centers.
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Affiliation(s)
- Ricarda Pütt
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Piotr Kozłowski
- Faculty of Physics, Adam Mickiewicz University in Poznań, ul. Uniwersytetu Poznańskiego 2, 61-614 Poznań, Poland
| | - Irina Werner
- Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany
| | - Jan Griebel
- Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany
| | - Sebastian Schmitz
- Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany
| | - Jonas Warneke
- Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany.,Wilhelm-Ostwald-Institute for Physical and Theoretical Chemistry, Leipzig University, Linnéstraße 2, 04103 Leipzig, Germany
| | - Kirill Yu Monakhov
- Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany
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16
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Benazzi E, Karlsson J, Ben M'Barek Y, Chabera P, Blanchard S, Alves S, Proust A, Pullerits T, Izzet G, Gibson EA. Acid-triggering of light-induced charge-separation in hybrid organic/inorganic molecular photoactive dyads for harnessing solar energy. Inorg Chem Front 2021. [DOI: 10.1039/d0qi01368d] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
H+ modulated charge-transfer in photoexcited covalently linked W and Mo Keggin-bodipy conjugates is demonstrated using transient absorption spectroscopy and photoluminescence. Adding acid switches on (W) or accelerates (Mo) charge separation.
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17
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Luo Y, Maloul S, Wächtler M, Winter A, Schubert US, Streb C, Dietzek B. Is electron ping-pong limiting the catalytic hydrogen evolution activity in covalent photosensitizer-polyoxometalate dyads? Chem Commun (Camb) 2020; 56:10485-10488. [PMID: 32766633 DOI: 10.1039/d0cc04509h] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Understanding the limitations of catalytic processes enables the design of optimized catalysts. Here, femtosecond transient absorption spectroelectrochemistry is used to explore the photophysics of polyoxometalate-based covalent photosensitizer-hydrogen evolution catalyst dyads. The study shows that the presence of light-driven forward and backward electron transfer, i.e. "electron ping-pong", is a limiting factor for charge accumulation on the polyoxometalate. Based on this insight, chemical means of optimizing catalyst performance are proposed.
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Affiliation(s)
- Yusen Luo
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller University Jena, Helmholtzweg 4, 07743 Jena, Germany and Department Functional Interfaces, Leibniz Institute of Photonic Technology (IPHT), Albert-Einstein-Strasse 9, 07745 Jena, Germany.
| | - Salam Maloul
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany.
| | - Maria Wächtler
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller University Jena, Helmholtzweg 4, 07743 Jena, Germany and Department Functional Interfaces, Leibniz Institute of Photonic Technology (IPHT), Albert-Einstein-Strasse 9, 07745 Jena, Germany.
| | - Andreas Winter
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich-Schiller University Jena, Humboldtstrasse 10, 07743 Jena, Germany and Center for Energy and Environmental Chemistry Jena (CEEC-Jena), Friedrich-Schiller University Jena, Philosophenweg 7a, 07743 Jena, Germany
| | - Ulrich S Schubert
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich-Schiller University Jena, Humboldtstrasse 10, 07743 Jena, Germany and Center for Energy and Environmental Chemistry Jena (CEEC-Jena), Friedrich-Schiller University Jena, Philosophenweg 7a, 07743 Jena, Germany
| | - Carsten Streb
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany.
| | - Benjamin Dietzek
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller University Jena, Helmholtzweg 4, 07743 Jena, Germany and Department Functional Interfaces, Leibniz Institute of Photonic Technology (IPHT), Albert-Einstein-Strasse 9, 07745 Jena, Germany. and Center for Energy and Environmental Chemistry Jena (CEEC-Jena), Friedrich-Schiller University Jena, Philosophenweg 7a, 07743 Jena, Germany
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18
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Anyushin AV, Vanhaecht S, Parac-Vogt TN. A Bis-organosilyl-Functionalized Wells-Dawson Polyoxometalate as a Platform for Facile Amine Postfunctionalization. Inorg Chem 2020; 59:10146-10152. [PMID: 32628015 DOI: 10.1021/acs.inorgchem.0c01274] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The development of modular platforms that can undergo postfunctionalization reactions permits coupling of inorganic clusters with different organic functionalities, thereby expanding the range of key physicochemical properties that are relevant for applications in different areas of science. In this work, a novel hybrid Wells-Dawson polyoxometalate (POM) platform was developed and successfully used for postfunctionalization via a nucleophilic substitution reaction. Two new halogen-functionalized bis-organosilyl Wells-Dawson POMs TBA6[α2-P2W17O61{O(SiC3H6-X)2}] (X = Cl or I) were synthesized, and their coupling with amine substrates was explored in a one-step postfunctionalization reaction. The iodide form of the POM has proven to be much more reactive, and its reaction with a range of primary and secondary amines resulted in a series of new bis-substituted Wells-Dawson POMs with the general formula TBA6[α2-P2W17O61{O(SiC3H6-NR1R2)2}]. Coupling of 18 amines with R1 and R2 groups, which exhibited a wide variety in terms of both chemical nature and bulkiness, was achieved under mild conditions via a catalyst-free approach. Using Na2CO3 as a base in acetonitrile solutions at 55 °C resulted in hybrid products that were obtained in high purity and good yields, after a simple isolation and purification procedure.
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Affiliation(s)
| | - Stef Vanhaecht
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
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Luo Y, Maloul S, Schönweiz S, Wächtler M, Streb C, Dietzek B. Yield-not only Lifetime-of the Photoinduced Charge-Separated State in Iridium Complex-Polyoxometalate Dyads Impact Their Hydrogen Evolution Reactivity. Chemistry 2020; 26:8045-8052. [PMID: 32237163 PMCID: PMC7383969 DOI: 10.1002/chem.202000982] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Indexed: 11/11/2022]
Abstract
Covalently linked photosensitizer-polyoxometalate (PS-POM) dyads are promising molecular systems for light-induced energy conversion processes, such as "solar" hydrogen generation. To date, very little is known of their fundamental photophysical properties which affect the catalytic reactivity and stability of the systems. PS-POM dyads often feature short-lived photoinduced charge-separated states, and the lifetimes of these states are considered crucial for the function of PS-POM dyads in molecular photocatalysis. Hence, strategies have been developed to extend the lifetimes of the photoinduced charge-separated states, either by tuning the PS photophysics or by tuning the POM redox properties. Recently, some of us reported PS-POM dyads based on cyclometalated IrIII complexes covalently linked to Anderson-type polyoxometalate. Distinct hydrogen evolution reactivity (HER) of the dyads was observed, which was tuned by varying the central metal ion M of the POMM (M=Mn3+ , Co3+ , Fe3+ ). In this manuscript, the photoinduced electron-transfer processes in the three Ir-POMM dyads are investigated to rationalize the underlying reasons for the differences in HER activity observed. We report that upon excitation of the IrIII complex, ultrafast (sub-ps) charge separation occurs, leading to different amounts of the charge-separated states (Ir.+ -POMM .- ) generated in the different dyads. However, in all dyads studied, the resulting Ir.+ -POMM .- species are short-lived (sub-ns) when compared to reference electron acceptors (e.g. porphyrins or fullerenes) reported in the literature. The reductive quenching of Ir.+ -POMM .- by a sacrificial donor, triethyl amine (1 m), to generate the intermediate Ir-POMM .- is estimated to be very efficient (70-80 %) for all dyads studied. Based on this analyses, we conclude that the yield instead of the lifetime of the Ir.+ -POMM .- charge-separated state determines the catalytic capacity of the dyads investigated. This new feature in the PS-POM photophysics could lead to new design criteria for the development of novel PS-POM dyads.
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Affiliation(s)
- Yusen Luo
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller-University Jena, Helmholtzweg 4, 07743, Jena, Germany.,Department Functional Interfaces, Leibniz Institute of Photonic Technology (IPHT), Albert-Einstein-Strasse 9, 07745, Jena, Germany
| | - Salam Maloul
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Stefanie Schönweiz
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Maria Wächtler
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller-University Jena, Helmholtzweg 4, 07743, Jena, Germany.,Department Functional Interfaces, Leibniz Institute of Photonic Technology (IPHT), Albert-Einstein-Strasse 9, 07745, Jena, Germany
| | - Carsten Streb
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Benjamin Dietzek
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller-University Jena, Helmholtzweg 4, 07743, Jena, Germany.,Department Functional Interfaces, Leibniz Institute of Photonic Technology (IPHT), Albert-Einstein-Strasse 9, 07745, Jena, Germany.,Center for Energy and Environmental Chemistry Jena (CEEC Jena), Friedrich-Schiller-University Jena, Philosophenweg 7a, 07743, Jena, Germany
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20
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Winter A, Endres P, Schröter E, Jäger M, Görls H, Neumann C, Turchanin A, Schubert US. Towards Covalent Photosensitizer-Polyoxometalate Dyads-Bipyridyl-Functionalized Polyoxometalates and Their Transition Metal Complexes. MOLECULES (BASEL, SWITZERLAND) 2019; 24:molecules24244446. [PMID: 31817289 PMCID: PMC6943497 DOI: 10.3390/molecules24244446] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 11/27/2019] [Accepted: 11/28/2019] [Indexed: 01/07/2023]
Abstract
A triol-functionalized 2,2'-bipyridine (bpy) derivative has been synthesized and used for the tris-alkoxylation of polyoxometalate (POM) precursors. The resultant POM-bpy conjugates of the Wells-Dawson- and Anderson-type feature a C-C bond as a linkage between the POM and bpy fragments. This structural motif is expected to increase the hydrolytic stability of the compounds. This is of particular relevance with respect to the application of POM-bpy metal complexes, as photocatalysts, in the hydrogen-evolution reaction (HER) in an aqueous environment. Accordingly, Rh(III) and Ir(III) complexes of the POM-bpy ligands have been prepared and characterized. These catalyst-photosensitizer dyads have been analyzed with respect to their electrochemical and photophysical properties. Cyclic and square-wave voltammetry, as well as UV/vis absorption and emission spectroscopy, indicated a negligible electronic interaction of the POM and metal-complex subunits in the ground state. However, emission-quenching experiments suggested an efficient intramolecular electron-transfer process from the photo-excited metal centers to the POM units to account for the non-emissive nature of the dyads (thus, suggesting a strong interaction of the subunits in the excited state). In-depth photophysical investigations, as well as a functional characterization, i.e., the applicability in the HER reaction, are currently ongoing.
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Affiliation(s)
- Andreas Winter
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany; (A.W.); (P.E.); (E.S.); (M.J.)
- Center for Energy and Environmental Chemistry (CEEC) Jena, Friedrich Schiller University Jena, Philosophenweg 7a, 07743 Jena, Germany; (C.N.); (A.T.)
| | - Patrick Endres
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany; (A.W.); (P.E.); (E.S.); (M.J.)
- Center for Energy and Environmental Chemistry (CEEC) Jena, Friedrich Schiller University Jena, Philosophenweg 7a, 07743 Jena, Germany; (C.N.); (A.T.)
| | - Erik Schröter
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany; (A.W.); (P.E.); (E.S.); (M.J.)
- Center for Energy and Environmental Chemistry (CEEC) Jena, Friedrich Schiller University Jena, Philosophenweg 7a, 07743 Jena, Germany; (C.N.); (A.T.)
| | - Michael Jäger
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany; (A.W.); (P.E.); (E.S.); (M.J.)
- Center for Energy and Environmental Chemistry (CEEC) Jena, Friedrich Schiller University Jena, Philosophenweg 7a, 07743 Jena, Germany; (C.N.); (A.T.)
| | - Helmar Görls
- Institute for Inorganic and Analytical Chemistry (IAAC), Friedrich Schiller University Jena, Humboldtstr. 8, 07743 Jena, Germany;
| | - Christof Neumann
- Center for Energy and Environmental Chemistry (CEEC) Jena, Friedrich Schiller University Jena, Philosophenweg 7a, 07743 Jena, Germany; (C.N.); (A.T.)
- Institute of Physical Chemistry (ICP), Friedrich Schiller University Jena, Lessingstr. 10, 07743 Jena, Germany
| | - Andrey Turchanin
- Center for Energy and Environmental Chemistry (CEEC) Jena, Friedrich Schiller University Jena, Philosophenweg 7a, 07743 Jena, Germany; (C.N.); (A.T.)
- Institute of Physical Chemistry (ICP), Friedrich Schiller University Jena, Lessingstr. 10, 07743 Jena, Germany
| | - Ulrich S. Schubert
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany; (A.W.); (P.E.); (E.S.); (M.J.)
- Center for Energy and Environmental Chemistry (CEEC) Jena, Friedrich Schiller University Jena, Philosophenweg 7a, 07743 Jena, Germany; (C.N.); (A.T.)
- Correspondence: ; Tel.: +49-3641-948201
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21
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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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22
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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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23
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Randell NM, Rendon J, Demeunynck M, Bayle P, Gambarelli S, Artero V, Mouesca J, Chavarot‐Kerlidou M. Tuning the Electron Storage Potential of a Charge‐Photoaccumulating Ru
II
Complex by a DFT‐Guided Approach. Chemistry 2019; 25:13911-13920. [DOI: 10.1002/chem.201902312] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 07/19/2019] [Indexed: 11/06/2022]
Affiliation(s)
- Nicholas M. Randell
- Univ. Grenoble Alpes, CNRS, CEAIRIG, Laboratoire de Chimie et Biologie des Métaux 38000 Grenoble France
| | - Julia Rendon
- Univ. Grenoble Alpes, CNRS, CEAIRIG, Laboratoire de Chimie et Biologie des Métaux 38000 Grenoble France
- Univ. Grenoble Alpes, CEA, CNRSIRIG-DIESE-SyMMES-CAMPE 38000 Grenoble France
| | | | | | - Serge Gambarelli
- Univ. Grenoble Alpes, CEA, CNRSIRIG-DIESE-SyMMES-CAMPE 38000 Grenoble France
| | - Vincent Artero
- Univ. Grenoble Alpes, CNRS, CEAIRIG, Laboratoire de Chimie et Biologie des Métaux 38000 Grenoble France
| | - Jean‐Marie Mouesca
- Univ. Grenoble Alpes, CEA, CNRSIRIG-DIESE-SyMMES-CAMPE 38000 Grenoble France
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24
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Kaledin AL, Troya D, Karwacki CJ, Balboa A, Gordon WO, Morris JR, Mitchell MB, Frenkel AI, Hill CL, Musaev DG. Key mechanistic details of paraoxon decomposition by polyoxometalates: Critical role of para-nitro substitution. Chem Phys 2019. [DOI: 10.1016/j.chemphys.2018.11.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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25
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Zhang T, Solé-Daura A, Hostachy S, Blanchard S, Paris C, Li Y, Carbó JJ, Poblet JM, Proust A, Guillemot G. Modeling the Oxygen Vacancy at a Molecular Vanadium(III) Silica-Supported Catalyst. J Am Chem Soc 2018; 140:14903-14914. [PMID: 30362733 DOI: 10.1021/jacs.8b09048] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Here we report on the use of a silanol-decorated polyoxotungstate, [SbW9O33( tBuSiOH)3]3- (1), as a molecular support to describe the coordination of a vanadium atom at a single-site on silica surfaces. By reacting [V(Mes)3·thf] (Mes = 2,4,6-trimethylphenyl) with 1 in tetrahydrofuran, the vanadium(III) derivative [SbW9O33( tBuSiO)3V(thf)]3- (2) was obtained. Compound 2 displays the paramagnetic behavior expected for a d2-VIII high spin complex (SQUID measurements) with a triplet electronic ground state (ca. 30 kcal·mol-1 more stable than the singlet, from DFT calculations). Compound 2 proves to be a reliable model for reduced isolated-vanadium atom dispersed on silica surfaces [(≡Si-O)3VIII(OH2)], an intermediate that is often proposed in a Mars-van Krevelen type mechanism for partial oxidation of light alcohols. Oxidation of 2 under air produced the oxo-derivative [SbW9O33( tBuSiO)3VO]3- (3). In compound 2, the d2-electrons are localized in degenerated d(V) orbitals, whereas in the electronically analogous bireduced-[SbW9O33( tBuSiO)3VO]5-, 3·(2e), one electron is localized on d(V) orbital and the second one is delocalized on the polyoxotungstic framework, leading to a unique case of a bireduced heteropolyanion derivative with completely decoupled d1-V(IV) and d1-W(V). Our body of experimental results (EPR, magnetic measurements, spectroelectrochemical studies, Raman spectroscopy) and theoretical studies highlights (i) the role of the apical ligand coordination, i.e., thf (σ-donor) vs oxo (π-donor), in destabilizing or stabilizing the d(V) orbitals relative to the d(W) orbitals, and (ii) a geometrical distortion of the O3VO entity that causes a splitting of the degenerated orbitals and the stabilization of one d(V) orbital in the bireduced compound 3·(2e).
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Affiliation(s)
- Teng Zhang
- Sorbonne Université , CNRS, Institut Parisien de Chimie Moléculaire, IPCM , 4 place Jussieu , F-75005 Paris , France
| | - Albert Solé-Daura
- Department de Química Física i Inorgànica , Universitat Rovira i Virgili , Marcel·lí Domingo 1 , 43007 Tarragona , Spain
| | - Sarah Hostachy
- Sorbonne Université , CNRS, Institut Parisien de Chimie Moléculaire, IPCM , 4 place Jussieu , F-75005 Paris , France
| | - Sébastien Blanchard
- Sorbonne Université , CNRS, Institut Parisien de Chimie Moléculaire, IPCM , 4 place Jussieu , F-75005 Paris , France
| | - Céline Paris
- Sorbonne Université , CNRS, De la Molécule aux Nano-objets: Réactivité, Interactions et Spectroscopies, MONARIS , 4 place Jussieu , F-75005 Paris , France
| | - Yanling Li
- Sorbonne Université , CNRS, Institut Parisien de Chimie Moléculaire, IPCM , 4 place Jussieu , F-75005 Paris , France
| | - Jorge J Carbó
- Department de Química Física i Inorgànica , Universitat Rovira i Virgili , Marcel·lí Domingo 1 , 43007 Tarragona , Spain
| | - Josep M Poblet
- Department de Química Física i Inorgànica , Universitat Rovira i Virgili , Marcel·lí Domingo 1 , 43007 Tarragona , Spain
| | - Anna Proust
- Sorbonne Université , CNRS, Institut Parisien de Chimie Moléculaire, IPCM , 4 place Jussieu , F-75005 Paris , France
| | - Geoffroy Guillemot
- 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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Kibler AJ, Newton GN. Tuning the electronic structure of organic–inorganic hybrid polyoxometalates: The crucial role of the covalent linkage. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.06.027] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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27
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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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28
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Black FA, Jacquart A, Toupalas G, Alves S, Proust A, Clark IP, Gibson EA, Izzet G. Rapid photoinduced charge injection into covalent polyoxometalate-bodipy conjugates. Chem Sci 2018; 9:5578-5584. [PMID: 30061989 PMCID: PMC6048759 DOI: 10.1039/c8sc00862k] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Accepted: 05/29/2018] [Indexed: 11/21/2022] Open
Abstract
Controlled design of photoactive hybrids would provide highly active materials for solar energy conversion and photo(electro) catalysis. We describe the kinetics of photoinduced electron transfer in a series of photoactive hybrids based on Keggin-type polyoxometalates (POMs) covalently grafted to bodipy photosensitizers. We show how the electronic properties and corresponding dynamics of these hybrids can be readily tuned by varying the POM metal ion, the anchoring functionalization and the spacer length. Ultrafast visible and IR transient absorption spectroscopy, supported by spectroelectrochemical measurements, reveals that photoinduced electron transfer from the bodipy chromophore to the organosilyl POM derivative occurs as rapidly as τ = 54 ps to generate a long-lived (τ = 4.8 ns) charge-separated (CS) state, making this system appropriate for applications in photoelectrochemical devices.
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Affiliation(s)
- Fiona A Black
- Chemistry: School of Natural and Environmental Science , Newcastle University , Newcastle upon Tyne , NE1 7RU , UK .
| | - Aurélie Jacquart
- Sorbonne Université , CNRS , Institut Parisien de Chimie Moléculaire , IPCM , 4 Place Jussieu , F-75005 Paris , France .
| | - Georgios Toupalas
- Sorbonne Université , CNRS , Institut Parisien de Chimie Moléculaire , IPCM , 4 Place Jussieu , F-75005 Paris , France .
| | - Sandra Alves
- Sorbonne Université , CNRS , Institut Parisien de Chimie Moléculaire , IPCM , 4 Place Jussieu , F-75005 Paris , France .
| | - Anna Proust
- Sorbonne Université , CNRS , Institut Parisien de Chimie Moléculaire , IPCM , 4 Place Jussieu , F-75005 Paris , France .
| | - Ian P Clark
- Central Laser Facility, Research Complex at Harwell , Science and Technology Facilities Council , Rutherford Appleton Laboratory , Harwell Oxford , Didcot , Oxfordshire OX11 0QX , UK
| | - Elizabeth A Gibson
- Chemistry: School of Natural and Environmental Science , Newcastle University , Newcastle upon Tyne , NE1 7RU , UK .
| | - Guillaume Izzet
- Sorbonne Université , CNRS , Institut Parisien de Chimie Moléculaire , IPCM , 4 Place Jussieu , F-75005 Paris , France .
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29
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Fernández-Alvarez VM, Ho SKY, Britovsek GJP, Maseras F. A DFT-based mechanistic proposal for the light-driven insertion of dioxygen into Pt(ii)-C bonds. Chem Sci 2018; 9:5039-5046. [PMID: 29938033 PMCID: PMC5994795 DOI: 10.1039/c8sc01161c] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Accepted: 05/03/2018] [Indexed: 11/21/2022] Open
Abstract
The photocatalyzed insertion of dioxygen into the Pt(ii)-methyl bond in terpyridine platinum complexes has been shown to proceed efficiently, but its mechanism remains a challenge. In particular, there are serious counter-intuitive differences in the reactivity of structurally similar complexes. M06 calculations in solvent with a valence double-ζ basis set supplemented by polarization and diffusion shells (benchmarked against ωB97x-D calculations with a larger basis set) are able to provide a satisfactory mechanistic answer. The proposed mechanism starts with the absorption of a photon by the metal complex, which then evolves into a triplet state that reacts with the triplet dioxygen fragment. A variety of possible reaction paths have been identified, some leading to the methylperoxo product and others reverting to the reactants, and the validity of some of these paths has been confirmed by additional experiments. The balance between the barriers towards productive and unproductive paths reproduces the diverging experimental behavior of similar complexes and provides a general mechanistic picture for these processes.
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Affiliation(s)
- Victor M Fernández-Alvarez
- Institute of Chemical Research of Catalonia , The Barcelona Institute for Science and Technology , Avgda. Països Catalans, 16 , Tarragona 43007 , Catalonia , Spain . ; ; Tel: +34 977 920202
| | - Sarah K Y Ho
- Department of Chemistry , Imperial College London , Exhibition Road, South Kensington , London SW7 2AY , UK
| | - George J P Britovsek
- Department of Chemistry , Imperial College London , Exhibition Road, South Kensington , London SW7 2AY , UK
| | - Feliu Maseras
- Institute of Chemical Research of Catalonia , The Barcelona Institute for Science and Technology , Avgda. Països Catalans, 16 , Tarragona 43007 , Catalonia , Spain . ; ; Tel: +34 977 920202
- Departament de Química , Universitat Autònoma de Barcelona , 08193 Bellaterra , Catalonia , Spain
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30
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Luo Y, Wächtler M, Barthelmes K, Winter A, Schubert US, Dietzek B. Coexistence of distinct intramolecular electron transfer pathways in polyoxometalate based molecular triads. Phys Chem Chem Phys 2018; 20:11740-11748. [PMID: 29651486 DOI: 10.1039/c8cp01007b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polyoxometalate (POM)-associated charge-separated states, formed by the photoinduced oxidation of a covalently attached photosensitizer and reduction of the POM, have attracted much attention due to the remarkable catalytic properties of the reduced POMs. However, short lifetimes of the POM-associated charge-separated state, which in some cases lead to the backward electron transfer being more rapid than the formation of the charge-separated state itself, are generally observed. Recently, we reported on the first example of a relative long-lived (τ = 470 ns) charge-separated state in a Ru(ii) bis(terpyridine)-POM molecular dyad. In this manuscript, further studies on extended molecular structures - two molecular triads - which contain an additional electron donor, phenothiazine (PTZ) or π-extended tetrathiafulvalene (exTTF), are discussed. We show that the excitation of the photosensitizer leads to the population of two distinct MLCT states, which differ in the distribution of excess electron density on the two distinct tpy ligands. These two MLCT states decay separately and, thus, constitute the starting points for distinct intramolecular electron-transfer pathways leading to the simultaneous population of two partially charge-separated states, i.e. PTZ˙+-Ru(tpy)2˙--POM and PTZ-RuIII(tpy)2-POM˙-. These independent decay pathways are unaffected by the choice of the electron donor. Thus, the initial charge distribution within the coordination environment of the photocenter determines the nature of the subsequent (partially) charge separated state that is formed in the triads. These results might open new avenues to design molecular interfaces, in which the directionality of electron transfer can be tuned by the choice of initial excitation.
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Affiliation(s)
- Yusen Luo
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany
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31
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Cameron JM, Wales DJ, Newton GN. Shining a light on the photo-sensitisation of organic-inorganic hybrid polyoxometalates. Dalton Trans 2018. [PMID: 29517788 DOI: 10.1039/c8dt00400e] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Finding new ways of using visible light (or, more specifically, solar irradiation) to drive commercially significant and/or challenging chemical processes is an ongoing research goal. Polyoxometalates (POMs) are discrete, metal-oxide clusters which are cheap, robust and easily synthesised but can also act as versatile molecular building blocks, allowing for astonishing variety in their structures and properties. In particular, the rich redox chemistry and inherent photo-activity of POMs makes them attractive for use in a variety of photochemical applications, however POMs characteristically only absorb strongly in the UV region. In this perspective, we discuss the various strategies which have been employed in order to sensitise POMs to visible light, with a particular focus on hybrid inorganic-organic POM species. We will discuss the two clear photo-activation mechanisms which have been developed to date and provide an outlook on some of the possible future directions of the field.
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Affiliation(s)
- Jamie M Cameron
- GSK Carbon Neutral Laboratory for Sustainable Chemistry, University of Nottingham, Nottingham, NG7 2GA, UK.
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32
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Kaledin AL, Driscoll DM, Troya D, Collins-Wildman DL, Hill CL, Morris JR, Musaev DG. Impact of ambient gases on the mechanism of [Cs 8Nb 6O 19]-promoted nerve-agent decomposition. Chem Sci 2018; 9:2147-2158. [PMID: 29719688 PMCID: PMC5896467 DOI: 10.1039/c7sc04997h] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Accepted: 01/05/2018] [Indexed: 11/26/2022] Open
Abstract
Polyoxoniobate catalyst, nerve agent decomposition, reaction mechanism, impact of ambient gases on the stability and reactivity of the polyoxoniobate.
The impact of ambient gas molecules (X), NO2, CO2 and SO2 on the structure, stability and decontamination activity of Cs8Nb6O19 polyoxometalate was studied computationally and experimentally. It was found that Cs8Nb6O19 absorbs these molecules more strongly than it adsorbs water and Sarin (GB) and that these interactions hinder nerve agent decontamination. The impacts of diamagnetic CO2 and SO2 molecules on polyoxoniobate Cs8Nb6O19 were fundamentally different from that of NO2 radical. At ambient temperatures, weak coordination of the first NO2 radical to Cs8Nb6O19 conferred partial radical character on the polyoxoniobate and promoted stronger coordination of the second NO2 adsorbent to form a stable diamagnetic Cs8Nb6O19/(NO2)2 species. Moreover, at low temperatures, NO2 radicals formed stable dinitrogen tetraoxide (N2O4) that weakly interacted with Cs8Nb6O19. It was found that both in the absence and presence of ambient gas molecules, GB decontamination by the Cs8Nb6O19 species proceeds via general base hydrolysis involving: (a) the adsorption of water and the nerve agent on Cs8Nb6O19/(X), (b) concerted hydrolysis of a water molecule on a basic oxygen atom of the polyoxoniobate and nucleophilic addition of the nascent OH group to the phosphorus center of Sarin, and (c) rapid reorganization of the formed pentacoordinated-phosphorus intermediate, followed by dissociation of either HF or isopropanol and formation of POM-bound isopropyl methyl phosphonic acid (i-MPA) or methyl phosphonofluoridic acid (MPFA), respectively. The presence of the ambient gas molecules increases the energy of the intermediate stationary points relative to the asymptote of the reactants and slightly increases the hydrolysis barrier. These changes closely correlate with the Cs8Nb6O19–X complexation energy. The most energetically stable intermediates of the GB hydrolysis and decontamination reaction were found to be Cs8Nb6O19/X-MPFA-(i-POH) and Cs8Nb6O19/X-(i-MPA)-HF both in the absence and presence of ambient gas molecules. The high stability of these intermediates is due to, in part, the strong hydrogen bonding between the adsorbates and the protonated [Cs8Nb6O19/X/H]+-core. Desorption of HF or/and (i-POH) and regeneration of the catalyst required deprotonation of the [Cs8Nb6O19/X/H]+-core and protonation of the phosphonic acids i-MPA and MPFA. This catalyst regeneration is shown to be a highly endothermic process, which is the rate-limiting step of the GB hydrolysis and decontamination reaction both in the absence and presence of ambient gas molecules.
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Affiliation(s)
- Alexey L Kaledin
- C. L. Emerson Center for Scientific Computation and Department of Chemistry , Emory University , Atlanta , Georgia 30322 , USA .
| | - Darren M Driscoll
- Department of Chemistry , Virginia Tech , Blacksburg , Virginia , 24061 , USA .
| | - Diego Troya
- Department of Chemistry , Virginia Tech , Blacksburg , Virginia , 24061 , USA .
| | | | - Craig L Hill
- Department of Chemistry , Emory University , Atlanta , Georgia 30322 , USA .
| | - John R Morris
- Department of Chemistry , Virginia Tech , Blacksburg , Virginia , 24061 , USA .
| | - Djamaladdin G Musaev
- C. L. Emerson Center for Scientific Computation and Department of Chemistry , Emory University , Atlanta , Georgia 30322 , USA . .,Department of Chemistry , Virginia Tech , Blacksburg , Virginia , 24061 , USA .
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33
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Luo Y, Wächtler M, Barthelmes K, Winter A, Schubert US, Dietzek B. Direct detection of the photoinduced charge-separated state in a Ru(ii) bis(terpyridine)-polyoxometalate molecular dyad. Chem Commun (Camb) 2018; 54:2970-2973. [PMID: 29399681 DOI: 10.1039/c7cc09181h] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Observation of photoinduced intramolecular charge-separation is difficult for photosensitizer-POM dyads because of rapid backward electron transfer. We report here for the first time on a long-lived charge-separated state (τ = 470 ns) observed in a Ru(ii) bis(terpyridine)-based dyad. Charge-separation occurs despite virtually no driving force and the short intrinsic excited-state lifetime of the photosensitizer.
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Affiliation(s)
- Yusen Luo
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, Jena 07743, Germany and Leibniz Institute of Photonic Technology (IPHT), Albert-Einstein-Straβe 9, Jena 07745, Germany.
| | - Maria Wächtler
- Leibniz Institute of Photonic Technology (IPHT), Albert-Einstein-Straβe 9, Jena 07745, Germany.
| | - Kevin Barthelmes
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraβe 10, Jena 07743, Germany and Center for Energy and Environmental Chemistry Jena (CEEC Jena), Friedrich Schiller University Jena, Philosophenweg 7a, Jena 07743, Germany
| | - Andreas Winter
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraβe 10, Jena 07743, Germany and Center for Energy and Environmental Chemistry Jena (CEEC Jena), Friedrich Schiller University Jena, Philosophenweg 7a, Jena 07743, Germany
| | - Ulrich S Schubert
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraβe 10, Jena 07743, Germany and Center for Energy and Environmental Chemistry Jena (CEEC Jena), Friedrich Schiller University Jena, Philosophenweg 7a, Jena 07743, Germany
| | - Benjamin Dietzek
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, Jena 07743, Germany and Leibniz Institute of Photonic Technology (IPHT), Albert-Einstein-Straβe 9, Jena 07745, Germany. and Center for Energy and Environmental Chemistry Jena (CEEC Jena), Friedrich Schiller University Jena, Philosophenweg 7a, Jena 07743, Germany
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34
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Auvray T, Santoni MP, Hasenknopf B, Hanan GS. Covalent hybrids based on Re(i) tricarbonyl complexes and polypyridine-functionalized polyoxometalate: synthesis, characterization and electronic properties. Dalton Trans 2018; 46:10029-10036. [PMID: 28730194 DOI: 10.1039/c7dt01674c] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of [Re(CO)3Br(N^N)] (N^N = substituted 2,2'-bipyridine ligand) complexes based on polypyridine-functionalized Dawson polyoxometalate (1-3) has been synthesized. The new hybrids (4-6) were characterized by various analytical techniques, including absorption, vibrational and luminescence spectroscopies as well as electrochemistry. Both units, the polyoxometalate and the transition metal complex, retain their intrinsic properties. Their combination in the newly prepared hybrids results in improved photosensitization in the high-energy visible region. However, a complete quenching of the emission for the [Re(CO)3Br(N^N)] complexes is observed due to formation of a charge separated state, Re(ii) - POM-, as shown by quenching experiments as well as theoretical modelling via DFT.
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Affiliation(s)
- Thomas Auvray
- Département de Chimie, Université de Montréal, Montréal, Canada H3T-1J4.
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35
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Al-Yasari A, Spence P, El Moll H, Van Steerteghem N, Horton PN, Brunschwig BS, Clays K, Fielden J. Fine-tuning polyoxometalate non-linear optical chromophores: a molecular electronic “Goldilocks” effect. Dalton Trans 2018; 47:10415-10419. [DOI: 10.1039/c8dt01491d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
An optimal combination of electron donor strength and electronic communication produces the best performing polyoxmetalate-based NLO chromophore to date.
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Affiliation(s)
- Ahmed Al-Yasari
- School of Chemistry
- University of East Anglia
- Norwich
- UK
- College of Pharmacy
| | - Philip Spence
- School of Chemistry
- University of East Anglia
- Norwich
- UK
| | - Hani El Moll
- School of Chemistry
- University of East Anglia
- Norwich
- UK
| | | | - Peter N. Horton
- UK National Crystallography Service
- School of Chemistry
- University of Southampton
- Southampton
- UK
| | | | - Koen Clays
- Department of Chemistry
- University of Leuven
- B-3001 Leuven
- Belgium
| | - John Fielden
- School of Chemistry
- University of East Anglia
- Norwich
- UK
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36
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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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37
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Barthelmes K, Sittig M, Winter A, Schubert US. Molecular Dyads and Triads Based on Phenothiazine and π-Extended Tetrathiafulvalene Donors, Bis(terpyridine)ruthenium(II) Complexes, and Polyoxometalates. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700626] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Kevin Barthelmes
- Laboratory of Organic and Macromolecular Chemistry (IOMC); Friedrich Schiller University Jena; Humboldtstr. 10 07743 Jena Germany
- Center for Energy and Environmental Chemistry Jena (CEEC Jena); Friedrich Schiller University Jena; Philosophenweg 7a 07743 Jena Germany
| | - Maria Sittig
- Laboratory of Organic and Macromolecular Chemistry (IOMC); Friedrich Schiller University Jena; Humboldtstr. 10 07743 Jena Germany
| | - Andreas Winter
- Laboratory of Organic and Macromolecular Chemistry (IOMC); Friedrich Schiller University Jena; Humboldtstr. 10 07743 Jena Germany
- Center for Energy and Environmental Chemistry Jena (CEEC Jena); Friedrich Schiller University Jena; Philosophenweg 7a 07743 Jena Germany
| | - Ulrich S. Schubert
- Laboratory of Organic and Macromolecular Chemistry (IOMC); Friedrich Schiller University Jena; Humboldtstr. 10 07743 Jena Germany
- Center for Energy and Environmental Chemistry Jena (CEEC Jena); Friedrich Schiller University Jena; Philosophenweg 7a 07743 Jena Germany
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38
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Al-Yasari A, Van Steerteghem N, Kearns H, El Moll H, Faulds K, Wright JA, Brunschwig BS, Clays K, Fielden J. Organoimido-Polyoxometalate Nonlinear Optical Chromophores: A Structural, Spectroscopic, and Computational Study. Inorg Chem 2017; 56:10181-10194. [DOI: 10.1021/acs.inorgchem.7b00708] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ahmed Al-Yasari
- School
of Chemistry, University of East Anglia, Norwich, NR4 7TJ, United Kingdom
- College
of Pharmacy, University of Kerbala, Kerbala, Iraq
| | - Nick Van Steerteghem
- Department
of Chemistry, University of Leuven, Celestijnenlaan 200D, B-3001 Leuven, Belgium
| | - Hayleigh Kearns
- Department
of Pure and Applied Chemistry, University of Strathclyde, 99 George Street, Glasgow, G1 1RD, United Kingdom
| | - Hani El Moll
- School
of Chemistry, University of East Anglia, Norwich, NR4 7TJ, United Kingdom
| | - Karen Faulds
- Department
of Pure and Applied Chemistry, University of Strathclyde, 99 George Street, Glasgow, G1 1RD, United Kingdom
| | - Joseph A. Wright
- School
of Chemistry, University of East Anglia, Norwich, NR4 7TJ, United Kingdom
| | - Bruce S. Brunschwig
- Beckman
Institute, California Institute of Technology, 1200 East California Blvd., MC 139-74, Pasadena, California 91125, United States
| | - Koen Clays
- Department
of Chemistry, University of Leuven, Celestijnenlaan 200D, B-3001 Leuven, Belgium
| | - John Fielden
- School
of Chemistry, University of East Anglia, Norwich, NR4 7TJ, United Kingdom
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39
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Davidson R, Hsu YT, Bhagani C, Yufit D, Beeby A. Exploring the Chemistry and Photophysics of Substituted Picolinates Positional Isomers in Iridium(III) Bisphenylpyridine Complexes. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00179] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ross Davidson
- Department of Chemistry, Durham University, South Road, Durham DH1
3LE, United Kingdom
| | - Yu-Ting Hsu
- Department of Chemistry, Durham University, South Road, Durham DH1
3LE, United Kingdom
| | - Chandni Bhagani
- Department of Chemistry, Durham University, South Road, Durham DH1
3LE, United Kingdom
| | - Dmitry Yufit
- Department of Chemistry, Durham University, South Road, Durham DH1
3LE, United Kingdom
| | - Andrew Beeby
- Department of Chemistry, Durham University, South Road, Durham DH1
3LE, United Kingdom
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40
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Gao N, Chen YX, Zhao YF, Li YM. Chemical Methods to Knock Down the Amyloid Proteins. Molecules 2017; 22:E916. [PMID: 28587164 PMCID: PMC6152772 DOI: 10.3390/molecules22060916] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2017] [Revised: 05/20/2017] [Accepted: 05/20/2017] [Indexed: 11/16/2022] Open
Abstract
Amyloid proteins are closely related with amyloid diseases and do tremendous harm to human health. However, there is still a lack of effective strategies to treat these amyloid diseases, so it is important to develop novel methods. Accelerating the clearance of amyloid proteins is a favorable method for amyloid disease treatment. Recently, chemical methods for protein reduction have been developed and have attracted much attention. In this review, we focus on the latest progress of chemical methods that knock down amyloid proteins, including the proteolysis-targeting chimera (PROTAC) strategy, the "recognition-cleavage" strategy, the chaperone-mediated autophagy (CMA) strategy, the selectively light-activatable organic and inorganic molecules strategy and other chemical strategies.
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Affiliation(s)
- Na Gao
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, China.
| | - Yong-Xiang Chen
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, China.
| | - Yu-Fen Zhao
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, China.
| | - Yan-Mei Li
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, China.
- Beijing Institute for Brain Disorders, Beijing 100069, China.
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41
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Serapian SA, Bo C. Simulating the Favorable Aggregation of Monolacunary Keggin Anions. J Phys Chem B 2016; 120:12959-12971. [DOI: 10.1021/acs.jpcb.6b10387] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Stefano Artin Serapian
- Institute
of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Carles Bo
- Institute
of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
- Departament
de Química Física i Inorgànica, Universitat Rovira i Virgili, Marcel·lí Domingo s/n, 43007 Tarragona, Spain
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42
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Cameron JM, Fujimoto S, Kastner K, Wei RJ, Robinson D, Sans V, Newton GN, Oshio HH. Orbital Engineering: Photoactivation of an Organofunctionalized Polyoxotungstate. Chemistry 2016; 23:47-50. [DOI: 10.1002/chem.201605021] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Jamie M. Cameron
- Graduate School of Pure and Applied Sciences; University of Tsukuba; Tennodai 1-1-1 Tsukuba 305-8571 Japan
| | - Satomi Fujimoto
- Graduate School of Pure and Applied Sciences; University of Tsukuba; Tennodai 1-1-1 Tsukuba 305-8571 Japan
| | - Katharina Kastner
- School of Chemistry; University of Nottingham, University Park; Nottingham NG7 2RD UK
| | - Rong-Jia Wei
- Graduate School of Pure and Applied Sciences; University of Tsukuba; Tennodai 1-1-1 Tsukuba 305-8571 Japan
| | - David Robinson
- School of Chemistry; University of Nottingham, University Park; Nottingham NG7 2RD UK
| | - Victor Sans
- Faculty of Engineering; University of Nottingham, University Park; Nottingham NG7 2RD UK
| | - Graham N. Newton
- School of Chemistry; University of Nottingham, University Park; Nottingham NG7 2RD UK
| | - H. Hiroki Oshio
- Graduate School of Pure and Applied Sciences; University of Tsukuba; Tennodai 1-1-1 Tsukuba 305-8571 Japan
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43
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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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44
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Schönweiz S, Rommel SA, Kübel J, Micheel M, Dietzek B, Rau S, Streb C. Covalent Photosensitizer-Polyoxometalate-Catalyst Dyads for Visible-Light-Driven Hydrogen Evolution. Chemistry 2016; 22:12002-5. [PMID: 27418410 DOI: 10.1002/chem.201602850] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Indexed: 11/06/2022]
Abstract
A general concept for the covalent linkage of coordination compounds to bipyridine-functionalized polyoxometalates is presented. The new route is used to link an iridium photosensitizer to an Anderson-type hydrogen-evolution catalyst. This covalent dyad catalyzes the visible-light-driven hydrogen evolution reaction (HER) and shows superior HER activity compared with the non-covalent reference. Hydrogen evolution is observed over periods >1 week. Spectroscopic, photophysical, and electrochemical analyses give initial insight into the stability, electronic structure, and reactivity of the dyad. The results demonstrate that the proposed linkage concept allows synergistic covalent interactions between functional coordination compounds and reactive molecular metal oxides.
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Affiliation(s)
- Stefanie Schönweiz
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Sebastian A Rommel
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Joachim Kübel
- Leibniz Institute of Photonic Technology (IPHT) Jena e.V., Albert-Einstein-Str. 9, 07745, Jena, Germany.,Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany)
| | - Mathias Micheel
- Leibniz Institute of Photonic Technology (IPHT) Jena e.V., Albert-Einstein-Str. 9, 07745, Jena, Germany.,Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany)
| | - Benjamin Dietzek
- Leibniz Institute of Photonic Technology (IPHT) Jena e.V., Albert-Einstein-Str. 9, 07745, Jena, Germany.,Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, 07743, Jena, 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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45
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Abramov PA, Vicent C, Kompankov NB, Gushchin AL, Sokolov MN. Coordination of {C5Me5Ir}2+to [M6O19]8-(M = Nb, Ta) - Analogies and Differences between Rh and Ir, Nb and Ta. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201501051] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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46
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47
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Xu H, Huang ZA, Guo X, Yang Y, Hua Y, Cao Z, Li S, Xia H. Sequential Construction Strategy for Rational Design of Luminescent Iridacycles. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00652] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Hui Xu
- State
Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative
Innovation Center of Chemistry for Energy Materials and College of
Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Zi-Ao Huang
- State
Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative
Innovation Center of Chemistry for Energy Materials and College of
Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Xugeng Guo
- State
Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative
Innovation Center of Chemistry for Energy Materials and College of
Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
- Fujian
Provincial Key Laboratory of Theoretical and Computational Chemistry, Xiamen University, Xiamen, 361005, China
| | - Yuhui Yang
- State
Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative
Innovation Center of Chemistry for Energy Materials and College of
Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Yuhui Hua
- State
Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative
Innovation Center of Chemistry for Energy Materials and College of
Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
- The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, Xiamen 361005, China
| | - Zexing Cao
- State
Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative
Innovation Center of Chemistry for Energy Materials and College of
Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
- Fujian
Provincial Key Laboratory of Theoretical and Computational Chemistry, Xiamen University, Xiamen, 361005, China
| | - Shunhua Li
- State
Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative
Innovation Center of Chemistry for Energy Materials and College of
Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
- The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, Xiamen 361005, China
| | - Haiping Xia
- State
Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative
Innovation Center of Chemistry for Energy Materials and College of
Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
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48
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Fernández-Alvarez VM, Nappi M, Melchiorre P, Maseras F. Computational Study with DFT and Kinetic Models on the Mechanism of Photoinitiated Aromatic Perfluoroalkylations. Org Lett 2015; 17:2676-9. [DOI: 10.1021/acs.orglett.5b01069] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Victor M. Fernández-Alvarez
- Institute of Chemical Research of Catalonia (ICIQ), Avgda. Països Catalans 16, 43007 Tarragona, Catalonia, Spain
| | - Manuel Nappi
- Institute of Chemical Research of Catalonia (ICIQ), Avgda. Països Catalans 16, 43007 Tarragona, Catalonia, Spain
| | - Paolo Melchiorre
- Institute of Chemical Research of Catalonia (ICIQ), Avgda. Països Catalans 16, 43007 Tarragona, Catalonia, Spain
- Institució Catalana de Recerca i Estudis Avançats, Passeig Lluís Companys 23, 08010 Barcelona, Spain
| | - Feliu Maseras
- Institute of Chemical Research of Catalonia (ICIQ), Avgda. Països Catalans 16, 43007 Tarragona, Catalonia, Spain
- Departament
de Química,Universitat Autònoma de Barcelona, 08193 Bellaterra, Catalonia, Spain
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49
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Rinfray C, Renaudineau S, Izzet G, Proust A. A covalent polyoxomolybdate-based hybrid with remarkable electron reservoir properties. Chem Commun (Camb) 2015; 50:8575-7. [PMID: 24956498 DOI: 10.1039/c4cc03779k] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A new polyoxomolybdate-based hybrid platform TBA4[PMo11O39{Sn(p-C6H4I)}] is reported. The presence of a post-functionalisable iodo-aryl moiety allows the grafting of a ferrocenyl moiety onto the POM. The electrochemical characterisation shows the effect of molybdenum on the electron reservoir properties of POM-based hybrids, which are further enhanced upon the addition of an acid.
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Affiliation(s)
- Corentin Rinfray
- Institut Parisien de Chimie Moléculaire Sorbonne Universités, UPMC Univ Paris 06, CNRS UMR 8232, Université Pierre et Marie Curie, 4 place Jussieu, case courrier 42, 75252 Paris Cedex 05, France.
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50
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Dave M, Streb C. Oxidative photoreactivity of mono-transition-metal functionalized lacunary Keggin anions. Dalton Trans 2015; 44:18919-22. [DOI: 10.1039/c5dt03134f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The photooxidative activity of mono-transition-metal functionalized lacunary silicotungstate Keggin anions is reported together with preliminary mechanistic insight into the photoreactivity.
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Affiliation(s)
- M. Dave
- 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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