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Salazar Marcano DE, Moussawi MA, Anyushin AV, Lentink S, Van Meervelt L, Ivanović-Burmazović I, Parac-Vogt TN. Versatile Post-functionalisation Strategy for the Formation of Modular Organic-Inorganic Polyoxometalate Hybrids. Chem Sci 2022; 13:2891-2899. [PMID: 35382468 PMCID: PMC8905796 DOI: 10.1039/d1sc06326j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Accepted: 02/07/2022] [Indexed: 11/28/2022] Open
Abstract
Hybrid structures incorporating different organic and inorganic constituents are emerging as a very promising class of materials since they synergistically combine the complementary and diverse properties of the individual components. Hybrid materials based on polyoxometalate clusters (POMs) are particularly interesting due to their versatile catalytic, redox, electronic, and magnetic properties, yet the controlled incorporation of different clusters into a hybrid structure is challenging and has been scarcely reported. Herein we propose a novel and general strategy for combining multiple types of metal-oxo clusters in a single hybrid molecule. Two novel hybrid POM structures (HPOMs) bis-functionalised with dipentaerythritol (R–POM1–R; R = (OCH2)3CCH2OCH2C(CH2OH)) were synthesised as building-blocks for the formation of heterometallic hybrid triads (POM2–R–POM1–R–POM2). Such a modular approach resulted in the formation of four novel heterometallic hybrids combing the Lindqvist {V6}, Anderson–Evans {XMo6} (X = Cr or Al) and trisubstituted Wells–Dawson {P2V3W15} POM structures. Their formation was confirmed by multinuclear Nuclear Magnetic Resonance (NMR), infrared (IR) and UV-Vis spectroscopy, as well as Mass Spectrometry, Diffusion Ordered Spectroscopy (DOSY) and elemental analysis. The thermal stability of the hybrids was also examined by Thermogravimetric Analysis (TGA), which showed that the HPOM triads exhibit higher thermal stability than comparable hybrid structures containing only one type of POM. The one-pot synthesis of these novel compounds was achieved in high yields in aqueous and organic media under simple reflux conditions, without the need of any additives, and could be translated to create other hybrid materials based on a variety of metal-oxo cluster building-blocks. A versatile modular approach has been developed for incorporating different metal-oxo nanoclusters with characteristic structures into a single hybrid molecule by covalently linking them with polyol ligands.![]()
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Affiliation(s)
- David E Salazar Marcano
- Laboratory of Bioinorganic Chemistry, KU Leuven Department of Chemistry Celestijnenlaan 200F 3001 Leuven Belgium
| | - Mhamad Aly Moussawi
- Laboratory of Bioinorganic Chemistry, KU Leuven Department of Chemistry Celestijnenlaan 200F 3001 Leuven Belgium
| | - Alexander V Anyushin
- Laboratory of Bioinorganic Chemistry, KU Leuven Department of Chemistry Celestijnenlaan 200F 3001 Leuven Belgium
| | - Sarah Lentink
- Laboratory of Bioinorganic Chemistry, KU Leuven Department of Chemistry Celestijnenlaan 200F 3001 Leuven Belgium
| | - Luc Van Meervelt
- Biomolecular Architecture, KU Leuven Department of Chemistry Celestijnenlaan 200F 3001 Leuven Belgium
| | - Ivana Ivanović-Burmazović
- Department of Chemistry, Ludwig-Maximilian-University Butenandtstr. 5-13, Haus D 81377 Munich Germany
| | - Tatjana N Parac-Vogt
- Laboratory of Bioinorganic Chemistry, KU Leuven Department of Chemistry Celestijnenlaan 200F 3001 Leuven Belgium
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Abramov PA. SYNTHESIS AND CRYSTAL STRUCTURE OF [LRe(CO)3(O2CC3F7)]. J STRUCT CHEM+ 2021. [DOI: 10.1134/s0022476621090109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Wang J, Yang M, Zhu Y, Cao J, Du Z, Li J, Liu X, Xu Y. Two Polyoxometalate‐Based Hybrid Compounds Modified by Iron Schiff Base Complexes: Syntheses, Crystal structures, Cyclic Voltametric Studies and Nonlinear Optical Properties. Chempluschem 2021; 86:191-197. [DOI: 10.1002/cplu.202000786] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 01/12/2021] [Indexed: 01/09/2023]
Affiliation(s)
- Ji‐Lei Wang
- College of Chemical Engineering State Key Laboratory of Materials-Oriented Chemical Engineering Nanjing Tech University Nanjing 210009 P. R. China
| | - Mu‐Xiu Yang
- College of Chemical Engineering State Key Laboratory of Materials-Oriented Chemical Engineering Nanjing Tech University Nanjing 210009 P. R. China
| | - Yu‐Xuan Zhu
- College of Chemical Engineering State Key Laboratory of Materials-Oriented Chemical Engineering Nanjing Tech University Nanjing 210009 P. R. China
| | - Jia‐Peng Cao
- College of Chemical Engineering State Key Laboratory of Materials-Oriented Chemical Engineering Nanjing Tech University Nanjing 210009 P. R. China
| | - Ze‐Yu Du
- College of Chemical Engineering State Key Laboratory of Materials-Oriented Chemical Engineering Nanjing Tech University Nanjing 210009 P. R. China
| | - Jia‐Nian Li
- College of Chemical Engineering State Key Laboratory of Materials-Oriented Chemical Engineering Nanjing Tech University Nanjing 210009 P. R. China
| | - Xiao‐Mei Liu
- College of Chemical Engineering State Key Laboratory of Materials-Oriented Chemical Engineering Nanjing Tech University Nanjing 210009 P. R. China
| | - Yan Xu
- College of Chemical Engineering State Key Laboratory of Materials-Oriented Chemical Engineering Nanjing Tech University Nanjing 210009 P. R. China
- Coordination Chemistry Institute State Key Laboratory of Coordination Chemistry Nanjing University Nanjing 210093 P. R. China
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Álvarez-Pazos N, Bravo J, Graña AM, García-Fontán S. Rhenium(I) carbonyl complexes bearing the alkenylphosphinite ligand Ph2POCH2CH CH2. Polyhedron 2020. [DOI: 10.1016/j.poly.2019.114288] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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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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Anyushin AV, Kondinski A, Parac-Vogt TN. Hybrid polyoxometalates as post-functionalization platforms: from fundamentals to emerging applications. Chem Soc Rev 2019; 49:382-432. [PMID: 31793568 DOI: 10.1039/c8cs00854j] [Citation(s) in RCA: 200] [Impact Index Per Article: 40.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Polyoxometalates (POMs) represent an important group of metal-oxo nanoclusters, typically comprised of early transition metals in high oxidation states (mainly V, Mo and W). Many plenary POMs exhibit good pH, solvent, thermal and redox stability, which makes them attractive components for the design of covalently integrated hybrid organic-inorganic molecules, herein referred to as hybrid-POMs. Until now, thousands of organic hybrid-POMs have been reported; however, only a small fraction can be further functionalized using other organic molecules or metal cations. This emerging class of 'post-functionalizable' hybrid-POMs constitute a valuable modular platform that permits coupling of POM properties with different organic and metal cation functionalities, thereby expanding the key physicochemical properties that are relevant for application in (photo)catalysis, bioinorganic chemistry and materials science. The post-functionalizable hybrid-POM platforms offer an opportunity to covalently link multi-electron redox responsive POM cores with virtually any (bio)organic molecule or metal cation, generating a wide range of materials with tailored properties. Over the past few years, these materials have been showcased in the preparation of framework materials, functional surfaces, surfactants, homogeneous and heterogeneous catalysts and light harvesting materials, among others. This review article provides an overview on the state of the art in POM post-functionalization and highlights the key design and structural features that permit the discovery of new hybrid-POM platforms. In doing so, we aim to make the subject more comprehensible, both for chemists and for scientists with different materials science backgrounds interested in the applications of hybrid (POM) materials. The review article goes beyond the realms of polyoxometalate chemistry and encompasses emerging research domains such as reticular materials, surfactants, surface functionalization, light harvesting materials, non-linear optics, charge storing materials, and homogeneous acid-base catalysis among others.
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Boulmier A, Haouas M, Tomane S, Michely L, Dolbecq A, Vallée A, Brezová V, Versace DL, Mialane P, Oms O. Photoactive Polyoxometalate/DASA Covalent Hybrids for Photopolymerization in the Visible Range. Chemistry 2019; 25:14349-14357. [PMID: 31392799 DOI: 10.1002/chem.201902573] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Indexed: 12/28/2022]
Abstract
The synthesis of TBA-DASA-POM-DASA, the first photoactive covalent hybrid polyoxometalate (POM) incorporating a donor-acceptor Stenhouse adduct (DASA) reverse photochrome, is presented. It has been evidenced that in solution the equilibrium between the colorless cyclopentenone and the highly colored triene conformers is strongly dependent not only on the nature of the solvent but also the countercations, allowing to tune its optical properties. This complex has been further associated to photochromic spironaphtoxazine cations, resulting in a material which can be activated by two distinct optical stimuli. Moreover, when combined with N-methyldiethanolamine, TBA-DASA-POM-DASA constitutes a performing photoinitiating system for polyethylene glycol diacrylate polymerization and under visible light irradiation, a promising result in a domain scarcely developed in POM chemistry.
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Affiliation(s)
- Amandine Boulmier
- Institut Lavoisier de Versailles, UMR 8180, Université Paris-Saclay, Université de Versailles Saint-Quentin en Yvelines, 45 Avenue des Etats-Unis, 78035, Versailles cedex, France
| | - Mohamed Haouas
- Institut Lavoisier de Versailles, UMR 8180, Université Paris-Saclay, Université de Versailles Saint-Quentin en Yvelines, 45 Avenue des Etats-Unis, 78035, Versailles cedex, France
| | - Somia Tomane
- Institut Lavoisier de Versailles, UMR 8180, Université Paris-Saclay, Université de Versailles Saint-Quentin en Yvelines, 45 Avenue des Etats-Unis, 78035, Versailles cedex, France.,Laboratoire de Réactivité de Surface (LRS), UMR CNRS 7197, Sorbonne Université, 4 Place Jussieu, 75252, Paris, France
| | - Laurent Michely
- Institut de Chimie et des Matériaux Paris-Est (ICMPE), CNRS-UPEC UMR 7182, 2-8 rue Henri Dunant, 94320, Thiais, France
| | - Anne Dolbecq
- Institut Lavoisier de Versailles, UMR 8180, Université Paris-Saclay, Université de Versailles Saint-Quentin en Yvelines, 45 Avenue des Etats-Unis, 78035, Versailles cedex, France
| | - Anne Vallée
- Institut Lavoisier de Versailles, UMR 8180, Université Paris-Saclay, Université de Versailles Saint-Quentin en Yvelines, 45 Avenue des Etats-Unis, 78035, Versailles cedex, France
| | - Vlasta Brezová
- Institute of Physical Chemistry and Chemical Physics, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, 81237, Bratislava, Slovak Republic
| | - Davy-Louis Versace
- Institut de Chimie et des Matériaux Paris-Est (ICMPE), CNRS-UPEC UMR 7182, 2-8 rue Henri Dunant, 94320, Thiais, France
| | - Pierre Mialane
- Institut Lavoisier de Versailles, UMR 8180, Université Paris-Saclay, Université de Versailles Saint-Quentin en Yvelines, 45 Avenue des Etats-Unis, 78035, Versailles cedex, France
| | - Olivier Oms
- Institut Lavoisier de Versailles, UMR 8180, Université Paris-Saclay, Université de Versailles Saint-Quentin en Yvelines, 45 Avenue des Etats-Unis, 78035, Versailles cedex, France
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Li H, Jiang F, Zhang G, Li B, Wu L. Cyclodextrin-/photoisomerization-modulated assembly and disassembly of an azobenzene-grafted polyoxometalate cluster. Dalton Trans 2019; 48:5168-5175. [PMID: 30806387 DOI: 10.1039/c8dt05146a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Herein, a mono-lacunary Keggin-type polyoxometalate (POM), [SiW11O39]8-, grafted with an azobenzene group through Sn ion bridging was prepared, and the formed organic-inorganic hybrid cluster was characterized via elemental analysis, NMR, TGA, and IR techniques. A vesicular structure of the hybrid cluster assembly in aqueous media was observed in the TEM image, and it dissociated in the presence of α-/β-, γ-cyclodextrins (α-/β-, γ-CDs); this dissociation was driven by the host-guest interactions. The monodispersed inclusion complex further reassembled into smaller micelles under irradiation with 365 nm light, and this transformation was reversibly controlled by alternating the irradiation with 450 nm light. Moreover, in the case of the POM-Azo/β-CD system, reassembly from the monodispersed state to the vesicular state was achieved by the addition of a competitive guest molecule. Thus, the reversible host-guest interactions combining reversible photoisomerization of the azobenzene group provided multiple ways to modulate the assembly and disassembly of the POM hybrid as well as the changes between different assemblies. The present study inspires the potential use of these kind of hybrid POMs in enhanced catalytic reactions and recycling.
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Affiliation(s)
- Hongbo Li
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, China.
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Glöβ M, Pütt R, Moors M, Kentzinger E, Pyckhout-Hintzen W, Monakhov KY. Interplay between the amphipathic polyoxometalate interactions in solution and at solid-liquid interfaces: a toolbox for the technical application. NANOSCALE 2019; 11:4267-4277. [PMID: 30566161 DOI: 10.1039/c8nr08008a] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The far-reaching interplay between the speciation of polyoxometalates (POMs) in the liquid phase and the POM adsorption characteristics on substrate surfaces yet remains to be understood. The significance of this interplay is however paramount because it indicates the degree of technical applicability of solvent-processable POM molecules. Herein, we target this fundamentally important issue, shedding light on the "POM-counterion-solvent" and "POM-counterion-solvent-substrate" processes. We effectively combine the results from small-angle X-ray scattering in solution with surface sensitive scanning tunneling microscopy and X-ray photoelectron spectroscopy measurements and present on this basis a semi-quantitative analysis which provides an excellent correlation between both approaches. The MeCN-solution speciation of a tris(alkoxo)-ligated Wells-Dawson-type polyoxoanion - explored as a representative of commonly negatively charged POM-based inorganic-organic nanostructures - is strikingly connected with the growth of porous two-dimensional molecular layers on highly oriented pyrolytic graphite (HOPG). Low water amounts dramatically transform intermolecular relationships toward hierarchical agglomeration that inhibits the layer formation on HOPG. The obtained findings lay the groundwork for a mechanistic study of controlled nucleation and growth of POM nanostructures on weakly interacting surfaces.
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Affiliation(s)
- Maria Glöβ
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
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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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Fura GD, Long Y, Yan J, Chen W, Lin CG, Song YF. Synthesis, structural characterization and fluorescence enhancement of chromophore-modified polyoxometalates. ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY 2018; 74:1260-1266. [PMID: 30398177 DOI: 10.1107/s2053229618009361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Accepted: 06/28/2018] [Indexed: 11/11/2022]
Abstract
Intramolecular charge transfers between π-conjugated molecules and polyoxometalate (POM) clusters have been observed in donor-acceptor systems based on organic donors and inorganic POM acceptors, which unfortunately results in a general quenching of the chromophore luminescence. The development of POM-chromophore dyads that are capable of tackling the quenching process and enhancing the fluorescence intensity of such systems remains a highly challenging area of study. A family of organic-inorganic polyoxometalate <!?tlsb=-0.2pt>hybrids, {[(n-C4H9)4N]3[(MnMo6O24){(CH2)3CR}2]} [1, R = -NHCH2C14H9, namely (anthracen-9-ylmethyl)amino; 2, R = -NHCH2C13H9, (9H-fluoren-2-ylmethyl)amino; 3, R = -NHCH2C10H7, (naphthalen-2-ylmethyl)amino; 4, R = -NHCH2C16H9, (pyren-2-ylmethyl)amino], were synthesized by covalently tethering π-conjugated molecules onto an Anderson cluster. The resulting POM-chromophore dyads were fully characterized by various spectroscopic techniques, single-crystal X-ray diffraction analysis and ESI-MS. The fluorescence features of these dyads were studied in detail to verify a dramatic emission enhancement that can be achieved by fine-tuning the microenvironment in solution and suppressing the intrinsic photo-induced electron-transfer process.
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Affiliation(s)
- Gizaw D Fura
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Yong Long
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Jun Yan
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, People's Republic of China
| | - Wei Chen
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Chang Gen Lin
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Yu Fei Song
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
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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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