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Vilà N, Nguyen L, Lacroix JC, Sun X, Walcarius A, Mbomekallé I. Assessing the Influence of Confinement on the Stability of Polyoxometalate-Functionalized Surfaces: A Soft Sequential Immobilization Approach for Electrochromic Devices. ACS APPLIED MATERIALS & INTERFACES 2024; 16:26521-26536. [PMID: 38713480 DOI: 10.1021/acsami.4c01859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
A functionalization process has been developed and the experimental conditions optimized allowing the immobilization of first-row transition metal (Mn+) containing polyoxometalates (POMs) with the formula [M(H2O)P2W17O61](10-n)- on transparent indium-tin oxide (ITO) electrodes for electrochromic applications. Both flat ITO grafted with 4-sulfophenyl moieties and sulfonate-functionalized vertically oriented silica films on ITO have been used as electrode supports to evaluate possible confinement effects provided by the mesoporous matrix on the stability of the modified surfaces and their electrochromic properties. Functionalization involved a two-step sequential process: (i) the immobilization of hexaaqua metallic ions, such as Fe(H2O)63+, onto the sulfonate-functionalized materials achieved through hydrogen bonding interactions between the sulfonate functions and aqua ligands (water molecules) coordinated to the metallic ions facilitating and stabilizing the attachment of the metallic ions to the sulfonated surfaces; (ii) their coordination to [P2W17O61]10- species to generate "in situ" the target [Fe(H2O)P2W17O61]7- moieties. Comparison of the characterized surfaces clearly evidenced a significant improvement in the long-term stability of the nanostructured [Fe(H2O)P2W17O61]7--functionalized silica films compared to the less constrained flat [Fe(H2O)P2W17O61]7--modified ITO electrodes for which a rapid loss of [P2W17O61]10- species was observed. Concordantly, the [Fe(H2O)P2W17O61]7- POM confined in the mesoporous films coated on ITO gave rise to much better and stable electrochromic properties, with a transmittance modulation of 40% at 515 nm.
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Affiliation(s)
- Neus Vilà
- Université de Lorraine, CNRS, LCPME, Nancy F-54000, France
| | - Linh Nguyen
- Université Paris Cité, CNRS, ITODYS, Paris F-75, France
| | | | - Xiaonan Sun
- Université Paris Cité, CNRS, ITODYS, Paris F-75, France
| | | | - Israël Mbomekallé
- Université Paris Saclay CNRS, Institut de Chimie Physique,Orsay F-91405, France
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Denikaev A, Kuznetsova Y, Bykov A, Zhilyakov A, Belova K, Abramov P, Moskalenko N, Skorb E, Grzhegorzhevskii K. Keplerate {Mo 132}-Stearic Acid Conjugates: Supramolecular Synthons for the Design of Dye-Loaded Nanovesicles, Langmuir-Schaefer Films, and Infochemical Applications. ACS APPLIED MATERIALS & INTERFACES 2024; 16:7430-7443. [PMID: 38299992 DOI: 10.1021/acsami.3c16374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2024]
Abstract
Self-assembly gives rise to the versatile strategies of smart material design but requires precise control on the supramolecular level. Here, inorganic-organic synthons (conjugates) are produced by covalently grafting stearic acid tails to giant polyoxometalate (POM) Keplerate-type {Mo132} through an organosilicon linker (3-aminopropyltrimethoxysilane, APTMS). Using the liposome production approach, the synthons self-assemble to form hollow nanosized vesicles (100-200 nm in diameter), which can be loaded with organic dyes─eriochrome black T (ErChB) and fluorescein (FL)─where the POM layer serves as a membrane with subnanopores for cell-like communication. The dye structure plays an essential role in embedding dyes into the vesicle's shell, which opens the way to control the colloidal stability of the system. The produced vesicles are moved by an electric field and used for the creation of an infochemistry scheme with three types of logic gates (AND, OR, and IMP). To design 2D materials, synthons can form spread films, from simple addition on the water-air interface to lateral compression in the Langmuir bath, and highly ordered structures appear, demonstrating electron diffraction in Langmuir-Schaefer (LS) films. These results show the significant potential of POM-based synthons and nanosized vesicles to supramolecular design the diversity of smart materials.
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Affiliation(s)
- Andrey Denikaev
- Ural Federal University, 19 Mira St., 620002 Ekaterinburg, Russia
| | - Yulia Kuznetsova
- Institute of Solid State Chemistry of the Ural Branch of the RAS, 91, Pervomaiskaya St., 620990 Ekaterinburg, Russia
| | - Alexey Bykov
- Institute of Chemistry, St. Petersburg State University, Universitetsky pr. 26, 198504 St. Petersburg, Russia
| | - Arkadiy Zhilyakov
- Ural Federal University, 19 Mira St., 620002 Ekaterinburg, Russia
- M.N. Mikheev lnstitute of Metal Physics of Ural Branch of RAS,18 S. Kovalevskaya St., 620108 Ekaterinburg, Russia
| | - Ksenia Belova
- Ural Federal University, 19 Mira St., 620002 Ekaterinburg, Russia
- Institute of High Temperature Electrochemistry of the Ural Branch of RAS, 22 S. Kovalevskoy St./20 Akademicheskaya St., 620066 Ekaterinburg, Russia
| | - Pavel Abramov
- Ural Federal University, 19 Mira St., 620002 Ekaterinburg, Russia
- Nikolaev Institute of Inorganic Chemistry Siberian Branch of RAS, 3 Acad. Lavrentiev Ave., 630090 Novosibirsk, Russia
| | - Nikolai Moskalenko
- Institute of High Temperature Electrochemistry of the Ural Branch of RAS, 22 S. Kovalevskoy St./20 Akademicheskaya St., 620066 Ekaterinburg, Russia
| | - Ekaterina Skorb
- Infochemistry Scientific Center, ITMO University, Kronverksky Pr. 49, bldg. A, 197101 St. Petersburg, Russia
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Two novel Anderson-type polyoxometalate based MnIII complexes constructed from pyrene derivatives: synthesis, photophysical, and electrochemical properties. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.121280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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4
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Electrochemical sensor based on the polyoxometalate nanocluster [(NH4)12[Mo36(NO)4O108(H2O)16]·33H2O and molybdenum disulfide nanocomposite materials for simultaneous detection of dihydroxybenzene isomers. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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5
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Haider A, Bassil BS, Soriano-López J, Qasim HM, Sáenz de Pipaón C, Ibrahim M, Dutta D, Koo YS, Carbó JJ, Poblet JM, Galán-Mascarós JR, Kortz U. 9-Cobalt(II)-Containing 27-Tungsto-3-germanate(IV): Synthesis, Structure, Computational Modeling, and Heterogeneous Water Oxidation Catalysis. Inorg Chem 2019; 58:11308-11316. [PMID: 31411866 DOI: 10.1021/acs.inorgchem.9b01495] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The 9-cobalt(II)-containing trimeric, cyclic polyanion [Co9(OH)3(H2O)6(PO4)2(B-α-GeW9O34)3]21- (1) was synthesized in an aqueous phosphate solution at pH 8 and isolated as a hydrated mixed sodium-cesium salt. Polyanion 1 was structurally and compositionally characterized in the solid state by single-crystal X-ray diffraction, Fourier transform infrared spectroscopy, as well as thermogravimetric and elemental analyses. The magnetic and electrochemical properties of 1 were also studied and compared with those of its phosphorus analogue, [Co9(OH)3(H2O)6(HPO4)2(B-α-PW9O34)3]16- (Co9-P). The electrochemical water oxidation activity of the cesium salt of 1 under heterogeneous conditions was also studied and shown to be superior to that of Co9-P. The experimental results were supported by computational studies.
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Affiliation(s)
- Ali Haider
- Jacobs University , Department of Life Sciences and Chemistry , Campus Ring 1 , 28759 Bremen , Germany
| | - Bassem S Bassil
- Jacobs University , Department of Life Sciences and Chemistry , Campus Ring 1 , 28759 Bremen , Germany.,Department of Chemistry, Faculty of Sciences , University of Balamand , P.O. Box 100, 1300 Tripoli , Lebanon
| | - Joaquín Soriano-López
- Departament de Química Física i Inorgànica , Universitat Rovira i Virgili , Marcel·lí Domingo 1 , E-43007 Tarragona , Spain.,Institute of Chemical Research of Catalonia (ICIQ) , The Barcelona Institute of Science and Technology (BIST) , Av. Països Catalans 16 , Tarragona E-43007 , Spain
| | - Hafiz M Qasim
- Jacobs University , Department of Life Sciences and Chemistry , Campus Ring 1 , 28759 Bremen , Germany
| | - Cristina Sáenz de Pipaón
- Institute of Chemical Research of Catalonia (ICIQ) , The Barcelona Institute of Science and Technology (BIST) , Av. Països Catalans 16 , Tarragona E-43007 , Spain
| | - Masooma Ibrahim
- Jacobs University , Department of Life Sciences and Chemistry , Campus Ring 1 , 28759 Bremen , Germany
| | - Daipayan Dutta
- Jacobs University , Department of Life Sciences and Chemistry , Campus Ring 1 , 28759 Bremen , Germany
| | - Yong-Sun Koo
- Institute of Chemical Research of Catalonia (ICIQ) , The Barcelona Institute of Science and Technology (BIST) , Av. Països Catalans 16 , Tarragona E-43007 , Spain
| | - Jorge J Carbó
- Departament de Química Física i Inorgànica , Universitat Rovira i Virgili , Marcel·lí Domingo 1 , E-43007 Tarragona , Spain
| | - Josep M Poblet
- Departament de Química Física i Inorgànica , Universitat Rovira i Virgili , Marcel·lí Domingo 1 , E-43007 Tarragona , Spain
| | - José Ramón Galán-Mascarós
- Institute of Chemical Research of Catalonia (ICIQ) , The Barcelona Institute of Science and Technology (BIST) , Av. Països Catalans 16 , Tarragona E-43007 , Spain.,ICREA , Passeig Lluis Companys 23 , Barcelona E-08010 , Spain
| | - Ulrich Kortz
- Jacobs University , Department of Life Sciences and Chemistry , Campus Ring 1 , 28759 Bremen , Germany
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Akram B, Wang X. Self-Assembly of Ultrathin Nanocrystals to Multidimensional Superstructures. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:10246-10266. [PMID: 31330109 DOI: 10.1021/acs.langmuir.9b01290] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The self-assembly of ultrathin nanocrystals (UTNCs) into well-organized multidimensional superstructures is one of the key topics in material chemistry and physics. Highly ordered nanocrystal assemblies also known as superstructures or synthetic structures have remained a focus for researchers over the past few years due to synergy in their properties as compared to their components. Here, we aim to present the recent progress being made in this field with highlights of our research group endeavors in the engineering of self-assembled complex multidimensional superstructures of various inorganic materials, including polyoxometalates. The driving forces for the assembly process and its kinetics along with the potential applications associated with these unique ordered and spatially complex superstructures are also discussed.
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Affiliation(s)
- Bilal Akram
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry , Tsinghua University , Beijing 100084 , China
| | - Xun Wang
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry , Tsinghua University , Beijing 100084 , China
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7
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Dalla Francesca K, Lenfant S, Laurans M, Volatron F, Izzet G, Humblot V, Methivier C, Guerin D, Proust A, Vuillaume D. Charge transport through redox active [H 7P 8W 48O 184] 33- polyoxometalates self-assembled onto gold surfaces and gold nanodots. NANOSCALE 2019; 11:1863-1878. [PMID: 30637426 DOI: 10.1039/c8nr09377f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Polyoxometalates (POMs) are redox-active molecular oxides, which attract growing interest for their integration into nano-devices, such as high-density data storage non-volatile memories. In this work, we investigated the electrostatic deposition of the negatively charged [H7P8W48O184]33- POM onto positively charged 8-amino-1-octanethiol self-assembled monolayers (SAMs) preformed onto gold substrates or onto an array of gold nanodots. The ring-shaped [H7P8W48O184]33- POM was selected as an example of large POMs with high charge storage capacity. To avoid the formation of POM aggregates onto the substrates, which would introduce variability in the local electrical properties, special attention has to be paid to the preformed SAM seeding layer, which should itself be deprived of aggregates. Where necessary, rinsing steps were found to be crucial to eliminate these aggregates and to provide uniformly covered substrates for subsequent POM deposition and electrical characterizations. This especially holds for commercially available gold/glass substrates while these rinsing steps were not essential in the case of template stripped gold of very low roughness. Charge transport through the related molecular junctions and nanodot molecule junctions (NMJs) has been probed by conducting-AFM. We analyzed the current-voltage curves with different models: electron tunneling though the SAMs (Simmons model), transition voltage spectroscopy (TVS) method or molecular single energy level mediated transport (Landauer equation) and we discussed the energetics of the molecular junctions. We concluded to an energy level alignment of the alkyl spacer and POM lowest occupied molecular orbitals (LUMOs), probably due to dipolar effects.
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Affiliation(s)
- K Dalla Francesca
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 4 Place Jussieu, F-75005 Paris, France.
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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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9
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Garai S, Merca A, Bhowmik S, El Moll H, Li H, Haso F, Nogueira H, Liu T, Wu L, Gouzerh P, Müller A. Hedgehog-shaped {Mo368} cluster: unique electronic/structural properties, surfactant encapsulation and related self-assembly into vesicles and films. SOFT MATTER 2015; 11:2372-2378. [PMID: 25629447 DOI: 10.1039/c4sm02662d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The hedgehog-shaped {Mo368} cluster shows unique electronic (extremely high extinction coefficient) and structural features, especially regarding its size, the high number of delocalized electrons which allows to measure the surface enhanced Raman scattering (SERS) spectrum and the option for coordination chemistry inside the cavity. Its relative instability in aqueous solution can be overcome by embedment in a hydrophobic shell of dimethyldioctadecylammonium cations. The resulting hybrid self-assembles into spherical vesicles in acetone-water mixtures, according to a process directed by hydrophobic-hydrophilic interactions. It also forms rather stable Langmuir monolayers while a second layer evolves under higher surface pressure, in accordance with a rather low alkyl surface density.
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Affiliation(s)
- Somenath Garai
- Fakultät für Chemie der Universität Bielefeld, Anorganische Chemie 1, Postfach 100131, 33501 Bielefeld, Germany.
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10
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Fernandes DM, Vos JG, Freire C. Europium phosphomolybdate and osmium metallopolymer multi-functional LbL films: Redox and electrocatalytic properties. J Colloid Interface Sci 2014; 420:127-35. [DOI: 10.1016/j.jcis.2014.01.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2013] [Revised: 01/07/2014] [Accepted: 01/08/2014] [Indexed: 11/28/2022]
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11
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Farhadipour A, Alizadeh M, Eshghi H. Synthesis of amino acid polyoxometalate hybrid nanotubes under solid-state chemical reaction at room temperature. INORG CHEM COMMUN 2014. [DOI: 10.1016/j.inoche.2013.12.031] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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12
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Jallet V, Guillemot G, Lai J, Bauduin P, Nardello-Rataj V, Proust A. Covalent amphiphilic polyoxometalates for the design of biphasic microemulsion systems. Chem Commun (Camb) 2014; 50:6610-2. [DOI: 10.1039/c4cc02695k] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Unprecedented stabilization of a Winsor I microemulsion has been achieved using a covalent polyoxotungstate amphiphile.
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Affiliation(s)
- V. Jallet
- Sorbonne Universités
- UPMC Univ Paris 06
- CNRS UMR 8232
- Institut Parisien de Chimie Moléculaire
- F-75005 Paris, France
| | - G. Guillemot
- Sorbonne Universités
- UPMC Univ Paris 06
- CNRS UMR 8232
- Institut Parisien de Chimie Moléculaire
- F-75005 Paris, France
| | - J. Lai
- Institut de Chimie Séparative de Marcoule
- UMR 5257 (CEA/CNRS/UM2/ENSCM) BP 17171
- 30207 Bagnols sur Cèze Cedex, France
| | - P. Bauduin
- Institut de Chimie Séparative de Marcoule
- UMR 5257 (CEA/CNRS/UM2/ENSCM) BP 17171
- 30207 Bagnols sur Cèze Cedex, France
| | - V. Nardello-Rataj
- Université Lille Nord de France
- EA 4478
- Chimie Moléculaire et Formulation
- F-59655 Villeneuve d'Ascq, France
| | - A. Proust
- Sorbonne Universités
- UPMC Univ Paris 06
- CNRS UMR 8232
- Institut Parisien de Chimie Moléculaire
- F-75005 Paris, France
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Yerra S, Supriya S, Das SK. Reversible morphological transition between nano-rods to micro-flowers through micro-hexagonal crystals in a sonochemical synthesis based on a polyoxovanadate compound. INORG CHEM COMMUN 2013. [DOI: 10.1016/j.inoche.2013.04.029] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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14
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Wang XL, Wang YL, Miao WK, Hu MB, Tang J, Yu W, Hou ZY, Zheng P, Wang W. Langmuir and Langmuir-Blodgett films of hybrid amphiphiles with a polyoxometalate headgroup. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:6537-6545. [PMID: 23651167 DOI: 10.1021/la401136a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A hybrid was at first synthesized by a postfunctionalization of an aminomethane trisalkoxo-functionalized Anderson-type polyoxometalate (POM) encapsulated by three tetrabutylammonium ions using a 3,5-bis(tetradecyloxy)benzoic acid by amidation. Then the three TBA(+) counter cations were programmatically replaced by protons (H(+)) following a molecule-to-amphiphile conversion. In this way one hybrid and three POM-containing hybrid amphiphiles (PCHAs) were acquired by adjusting the number (n) of TBA(+) ions and number (3 - n) of H(+) ions (n = 3, 2, 1, and 0). These compounds can be spread onto a water surface to form a Langmuir monolayer film at the air-water interface. Surface pressure-molecular area measurements exhibit the TBA(+) (H(+)) number playing an important role in the forming ability and stability of Langmuir monolayer films. Also, the Langmuir-Blodgett (LB) technique has been used to transfer the monolayer film onto solid supports to fabricate solid multilayer films. It was found that the PCHA with three H(+) ions had the best Langmuir film-forming ability and thus formed stable LB films with a two-dimensional ordered structure. Our findings are instructive in fabricating and using solid films of the amphiphiles with POM headgroups.
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Affiliation(s)
- Xiao-Le Wang
- Center for Synthetic Soft Materials, Key Laboratory of Functional Polymer Materials of the Ministry of Education and Institute of Polymer Chemistry, Nankai University, Tianjin 300071, China
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Coronado E, Martí-Gastaldo C, Navarro-Moratalla E, Ribera A, Tatay S. Illustrating the Processability of Magnetic Layered Double Hydroxides: Layer-by-Layer Assembly of Magnetic Ultrathin Films. Inorg Chem 2013; 52:6214-22. [DOI: 10.1021/ic400734t] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- E. Coronado
- Instituto de Ciencia Molecular (ICMol), Universidad de Valencia, Catedrático José Beltrán
2, 46890 Paterna, Spain
| | - C. Martí-Gastaldo
- Instituto de Ciencia Molecular (ICMol), Universidad de Valencia, Catedrático José Beltrán
2, 46890 Paterna, Spain
- Department of Chemistry, University of Liverpool, Crown Street, L697ZD Liverpool, United Kingdom
| | - E. Navarro-Moratalla
- Instituto de Ciencia Molecular (ICMol), Universidad de Valencia, Catedrático José Beltrán
2, 46890 Paterna, Spain
| | - A. Ribera
- Instituto de Ciencia Molecular (ICMol), Universidad de Valencia, Catedrático José Beltrán
2, 46890 Paterna, Spain
| | - S. Tatay
- Instituto de Ciencia Molecular (ICMol), Universidad de Valencia, Catedrático José Beltrán
2, 46890 Paterna, Spain
- Unité Mixte de Physique CNRS/Thales (UMR137), Associée à l’Université Paris-Sud 11, Augustin Fresnel, 1, 91767 Palaiseau cedex, France
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Gu ZR, Fu H, Liu L, Li FB, Liu SZ, Wang YR, Du ZL, Ho CL, Wong WY. Preparation, Characterization, and Photoelectric Properties of Langmuir–Blodgett Films of Some Europium-Substituted Polyoxometalates and 2-Aminofluorene with Tunable Emission Color. J Inorg Organomet Polym Mater 2013. [DOI: 10.1007/s10904-013-9830-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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17
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Hutin M, Yvon C, Yan J, Macdonell A, Long DL, Cronin L. Programming the assembly of carboxylic acid-functionalised hybrid polyoxometalates. CrystEngComm 2013. [DOI: 10.1039/c3ce26816k] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Yamamoto T, Umemura Y, Einaga Y. Structure-distortion-induced photomagnetic effect in azobenzene/polyoxometalate Langmuir–Blodgett films. Dalton Trans 2013; 42:16014-20. [DOI: 10.1039/c3dt51402a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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19
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Preparation, Characterization and Photoelectric Properties of Hybrid Langmuir–Blodgett Films of Alkynylplatinum(II)–Zinc(II) Porphyrinate/Heteropolyoxometalate. J Inorg Organomet Polym Mater 2012. [DOI: 10.1007/s10904-012-9745-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Proust A, Matt B, Villanneau R, Guillemot G, Gouzerh P, Izzet G. Functionalization and post-functionalization: a step towards polyoxometalate-based materials. Chem Soc Rev 2012; 41:7605-22. [PMID: 22782306 DOI: 10.1039/c2cs35119f] [Citation(s) in RCA: 664] [Impact Index Per Article: 55.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Polyoxometalates (POMs) have remarkable properties and a great deal of potential to meet contemporary societal demands regarding health, environment, energy and information technologies. However, implementation of POMs in various functional architectures, devices or materials requires a processing step. Most developments have considered the exchange of POM counterions in an electrostatically driven approach: immobilization of POMs on electrodes and other surfaces including oxides, embedding in polymers, incorporation into Layer-by-Layer assemblies or Langmuir-Blodgett films and hierarchical self-assembly of surfactant-encapsulated POMs have thus been thoroughly investigated. Meanwhile, the field of organic-inorganic POM hybrids has expanded and offers the opportunity to explore the covalent approach for the organization or immobilization of POMs. In this critical review, we focus on the use of POM hybrids in selected fields of applications such as catalysis, energy conversion and molecular nanosciences and we endeavor to discuss the impact of the covalent approach compared to the electrostatic one. The synthesis of organic-inorganic POM hybrids starting from bare POMs, that is the direct functionalization of POMs, is well documented and reliable and efficient synthetic procedures are available. However, as the complexity of the targeted functional system increases a multi-step strategy relying on the post-functionalization of preformed hybrid POM platforms could prove more appealing. In the second part of this review, we thus survey the synthetic methodologies of post-functionalization of POMs and critically discuss the opportunities it offers compared to direct functionalization.
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Affiliation(s)
- Anna Proust
- Institut Parisien de Chimie Moléculaire, UMR CNRS 7201, UPMC Univ Paris 06, Université Pierre et Marie Curie, 4 place Jussieu, Case 42, 75252, Paris Cedex 05, France.
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21
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Clemente-León M, Coronado E, López-Muñoz A, Repetto D, Catala L, Mallah T. Patterning of magnetic bimetallic coordination nanoparticles of Prussian blue derivatives by the Langmuir-Blodgett technique. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:4525-4533. [PMID: 22316131 DOI: 10.1021/la2049508] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We report a novel method to prepare patterns of nanoparticles over large areas of the substrate. This method is based on the adsorption of the negatively charged nanoparticles dispersed in an aqueous subphase onto a monolayer of the phospholipid dipalmitoyl-l-α-phosphatidylcholine (DPPC) at the air-water interface. It has been used to prepare patterns of nanoparticles of Prussian blue analogues (PBA) of different size (K(0.25)Ni[Fe(CN)(6)](0.75) (NiFe), K(0.25)Ni[Cr(CN)(6)](0.75) (NiCr), K(0.25)Ni[Co(CN)(6)](0.75) (NiCo), Cs(0.4)Co[Cr(CN)(6)](0.8) (CsCoCr), and Cs(0.4)Co[Fe(CN)(6)](0.9) (CsCoFe)). The behavior of DPPC monolayer at the air-water interface in the presence of the subphase of PBA nanoparticles has been studied by the compression isotherms and Brewster angle microscopy (BAM) images. Atomic force microscopy (AFM) of the transferred films on mica substrates shows that patterns of the nanoparticles are observed for a 10(-4) M concentration of the subphase, based on the nanoparticle precursors, at surface pressures between 1 and 6 mN/m and transfer velocities from 10 to 80 mm/min. Vertical, horizontal, or tilted fringes of the nanoparticles with respect to the transfer direction can be obtained depending on the transfer velocity and surface pressure.
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22
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Giner-Casares JJ, Brezesinski G, Möhwald H, Landsmann S, Polarz S. Polyoxometalate Surfactants as Unique Molecules for Interfacial Self-Assembly. J Phys Chem Lett 2012; 3:322-6. [PMID: 26285845 DOI: 10.1021/jz201588z] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Whereas, commonly, Langmuir monolayers are structurally dominated by the aliphatic chains, we present here the first case of monolayers where the chains merely serve anchoring at the air/water interface and the organization is dictated by the hydrophilic head group self-assembling in a hexagonal lattice. These head groups are polyoxometalates known for their multifunctional potential. The chain length has been systematically varied, allowing for a general study of the impact of the chain length on the supramolecular structure. These model structures are studied here by a combination of modern techniques, the leading ones being X-ray reflectivity and grazing incidence X-ray diffraction. The quantitative structural insights offered in this Letter might represent a starting point for the rational design and study of a new class of emulsions, including an organic tail and a multifunctional inorganic polar head.
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Affiliation(s)
- Juan J Giner-Casares
- †Department of Interfaces, Max Planck Institute of Colloids and Interfaces, Science Park Golm, 14476 Potsdam, Germany
- ‡Department of Physical Chemistry, University of Córdoba, Campus de Rabanales, 14014 Córdoba, Spain
| | - Gerald Brezesinski
- †Department of Interfaces, Max Planck Institute of Colloids and Interfaces, Science Park Golm, 14476 Potsdam, Germany
| | - Helmuth Möhwald
- †Department of Interfaces, Max Planck Institute of Colloids and Interfaces, Science Park Golm, 14476 Potsdam, Germany
| | - Steve Landsmann
- §Department of Chemistry, University of Konstanz, D-78457 Konstanz, Germany
| | - Sebastian Polarz
- §Department of Chemistry, University of Konstanz, D-78457 Konstanz, Germany
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23
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Song YF, Tsunashima R. Recent advances on polyoxometalate-based molecular and composite materials. Chem Soc Rev 2012; 41:7384-402. [DOI: 10.1039/c2cs35143a] [Citation(s) in RCA: 698] [Impact Index Per Article: 58.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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24
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Nisar A, Wang X. Surfactant-encapsulated polyoxometalate building blocks: controlled assembly and their catalytic properties. Dalton Trans 2012; 41:9832-45. [DOI: 10.1039/c2dt30470h] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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25
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Müller A, Gouzerh P. From linking of metal-oxide building blocks in a dynamic library to giant clusters with unique properties and towards adaptive chemistry. Chem Soc Rev 2012; 41:7431-63. [DOI: 10.1039/c2cs35169b] [Citation(s) in RCA: 299] [Impact Index Per Article: 24.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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26
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de Viguerie L, Mouret A, Brau HP, Nardello-Rataj V, Proust A, Bauduin P. Surface pressure induced 2D-crystallization of POM-based surfactants: preparation of nanostructured thin films. CrystEngComm 2012. [DOI: 10.1039/c2ce26080h] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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27
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Musumeci C, Rosnes MH, Giannazzo F, Symes MD, Cronin L, Pignataro B. Smart high-κ nanodielectrics using solid supported polyoxometalate-rich nanostructures. ACS NANO 2011; 5:9992-9999. [PMID: 22066461 DOI: 10.1021/nn2037797] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Utilizing Langmuir-Blodgett deposition and scanning probe microscopy, we have investigated the extent to which cations alter the self-assembly processes of hybrid polyoxometalates (POMs) on surfaces. The well-defined 2D hexagonal nanostructures obtained were extensively characterized and their properties were studied, and this has revealed fascinating dielectric behavior and reversible capacitive properties. The nanostructures are extremely stable under ambient conditions, and yet exhibit fascinating self-patterning upon heating. These findings present POMs as effective smart nanodielectrics and open up a new field for future POM applications.
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Affiliation(s)
- Chiara Musumeci
- Superlab-Consorzio Catania Ricerche, Stradale Primosole 50, 95121 Catania, Italy
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28
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Nisar A, Lu Y, Zhuang J, Wang X. Polyoxometalate Nanocone Nanoreactors: Magnetic Manipulation and Enhanced Catalytic Performance. Angew Chem Int Ed Engl 2011; 50:3187-92. [DOI: 10.1002/anie.201006155] [Citation(s) in RCA: 115] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2010] [Revised: 01/28/2011] [Indexed: 11/07/2022]
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29
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Nisar A, Lu Y, Zhuang J, Wang X. Polyoxometalate Nanocone Nanoreactors: Magnetic Manipulation and Enhanced Catalytic Performance. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201006155] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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30
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Preparation, luminescence and photoelectric properties of Langmuir–Blodgett films of alkynylplatinum(II)–zinc(II) porphyrinate/heteropolyoxometalate hybrid composites. J Organomet Chem 2011. [DOI: 10.1016/j.jorganchem.2010.12.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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31
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Bolink HJ, Baranoff E, Clemente-León M, Coronado E, Lardiés N, López-Muñoz A, Repetto D, Nazeeruddin MK. Dual-emitting Langmuir-Blodgett film-based organic light-emitting diodes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:11461-11468. [PMID: 20486649 DOI: 10.1021/la100956w] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Langmuir-Blodgett (LB) films containing alternating layers of the metallosurfactants bis(4,4'-tridecyl-2,2'-bipyridine)-(4,4'-dicarboxy-2,2'-bipyridine) ruthenium(II)-bis(chloride) (1) and bis[2-(2,4-difluorophenyl)pyridine](4,4'-dinonadecyl-2,2'-bipyridine)iridium(III) chloride (2) have been prepared. Langmuir monolayers at the air-water interface of 1 and 2 with different anions in the subphase have been characterized by pi-A compression isotherms and Brewster angle microscopy (BAM). The transferred LB films have been characterized by IR, UV-vis and emission spectroscopy, and atomic force microscopy (AFM). Electroluminescent devices formed by LB films containing alternating layers of these two molecules show dual emission by simple mixing of the two emitters in a single LB film, and by preparing two stacked configurations, in which a LB layer of the ruthenium complexes is deposited on top of a LB layer of the iridium complexes and the inverse situation. The color of the electroluminescence can be tuned by changing the thickness of each LB layer. Due to efficient hole blocking of a layer of the iridium complexes when deposited on top of the layer of ruthenium complexes, in that configuration the green emission of the iridium complexes is suppressed. In the opposite case, excitons are generated in both layers although most likely preferentially in the layer of the iridium complexes.
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Affiliation(s)
- Henk J Bolink
- Instituto de Ciencia Molecular, Universidad de Valencia, 46980 Paterna, Spain.
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32
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Gatard S, Blanchard S, Schollhorn B, Gouzerh P, Proust A, Boubekeur K. Electroactive Benzothiazole Hydrazones and Their [Mo6O19]2− Derivatives: Promising Building Blocks for Conducting Molecular Materials. Chemistry 2010; 16:8390-9. [DOI: 10.1002/chem.201000427] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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33
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Clemente-León M, Coronado E, López-Muñoz A, Repetto D, Ito T, Konya T, Yamase T, Constable EC, Housecroft CE, Doyle K, Graber S. Dual-emissive photoluminescent Langmuir-Blodgett films of decatungstoeuropate and an amphiphilic iridium complex. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:1316-1324. [PMID: 19754063 DOI: 10.1021/la902513z] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Langmuir monolayers and Langmuir-Blodgett (LB) films of the decatungstoeuropate [Eu(W(5)O(18))(2)](9-) (EuW(10)) and the amphiphilic Ir complex 1 have been successfully fabricated by using the adsorption properties of the EuW(10) polyanion dissolved in the aqueous subphase onto a positively charged 1 monolayer at the air-water interface. The compression isotherms and Brewster angle microscopy (BAM) of monolayers of 1 on pure water (1 monolayer) and on a subphase containing 10(-6) M EuW(10) and 10(-3) M NaCl (1/EuW(10) monolayer) have been studied. Infrared and UV-vis spectroscopy of the transferred LB films indicate that EuW(10) and 1 molecules are incorporated within these LB films. X-ray reflectivity (SXR) and atomic force microscopy (AFM) experiments indicate that LB films of 1 present a heterogeneous morphology while 1/EuW(10) films show a flatter and more homogeneous surface as well as a layered structure with a periodicity of 4.1 nm. Mixed monolayers of 1 and DODA (dimethyldioctadecylammonium bromide) have been prepared with EuW(10) polyanions in the subphase to control the concentration of 1 and EuW(10) polyanions within the LB films. AFM and SXR experiments with the transferred LB films show that the dilution of 1 with DODA improves the layered structure. The luminescence of 1 is partially quenched by EuW(10) in the 1/EuW(10) LB films, while emission from EuW(10) is not detected. On the other hand, emission from both entities is preserved in the LB films prepared from mixed DODA/1 monolayers, in which the red and yellow emissions arise independently from EuW(10) and 1, respectively. The different DODA:1 ratios lead to changes in the emission color. Therefore, they constitute a promising color-tunable luminescent material.
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34
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Charron G, Giusti A, Mazerat S, Mialane P, Gloter A, Miserque F, Keita B, Nadjo L, Filoramo A, Rivière E, Wernsdorfer W, Huc V, Bourgoin JP, Mallah T. Assembly of a magnetic polyoxometalate on SWNTs. NANOSCALE 2010; 2:139-144. [PMID: 20648376 DOI: 10.1039/b9nr00190e] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Recently, the organisation of magnetic molecules on carbon nanotubes has raised much interest due to their possible interesting contribution to molecular spintronics. In this paper, we describe the assembly on SWNTs of a magnetic polyoxometalate encompassing a single cobalt ion (CoPOM) and its isostructural diamagnetic zinc analogue (ZnPOM). The simple magnetic behaviour of CoPOM and the availability of its diamagnetic counterpart render these POM@NTs systems interesting model compounds for the study of molecular electronics devices based on carbon nanotubes and magnetic molecules. The success and rate of the grafting have been investigated by electron microscopy, electron energy loss spectroscopy, X-ray photoelectron spectroscopy, cyclic voltammetry, Raman scattering and magnetisation measurements. These characterisations altogether demonstrate the preservation of the structural and magnetic properties of the molecules upon functionalisation and the existence of an electronic communication between the molecules and the nanotubes.
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Affiliation(s)
- Gaëlle Charron
- School of Chemical Sciences-Energy Material Lab, University of East Anglia, Norwich, UK.
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35
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Bao YY, Bi LH, Wu LX, Mal SS, Kortz U. Preparation and characterization of Langmuir-Blodgett films of wheel-shaped Cu-20 tungstophosphate and DODA by two different strategies. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:13000-13006. [PMID: 19899818 DOI: 10.1021/la901854e] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A novel surfactant-encapsulated organic-inorganic hybrid compound (DODA)(24)Li[Cu(20)Cl(OH)(24)(P(8)W(48)O(184))] x 18 H(2)O (DODA-Cu20) has been prepared from the wheel-shaped tungstophosphate salt K(12)Li(13)[Cu(20)Cl(OH)(24)(H(2)O)(12)(P(8)W(48)O(184))] x 22 H(2)O (Cu20) and dimethyldioctadecylammonium bromide (DODA), and it has been characterized by elemental analysis (EA), thermogravimetric analysis (TGA), (1)H NMR, Fourier transform infrared spectroscopy (FT-IR), and X-ray diffraction (XRD) measurements. Monolayer and multilayer films of DODA-Cu20 were fabricated on different substrates by the Langmuir-Blodgett (LB) technique using H(2)O as the subphase. Another type of organic-inorganic hybrid film, DODA/Cu20, was also deposited on the same substrates as used for the film containing DODA-Cu20 under the same conditions by the LB technique using a Cu20 aqueous solution as the subphase and DODA as the cationic amphiphile for comparison. Both thus-prepared organic-inorganic hybrid films were characterized by UV-vis spectroscopy, XRD, transmission and polarized FT-IR spectroscopy, X-ray photoelectron spectroscopy (XPS), and atomic force microscopy (AFM). The results indicate that stable monolayers at the air-water interface for DODA-Cu20 and at the air-Cu20 solution interface for DODA can be formed and that two LB films containing DODA-Cu20 and DODA/Cu20 constructed by two different methods both exhibit well-ordered lamellar structures. It is proposed that Cu20 exhibits different packing modes in the two LB films depending on the deposition strategy used.
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Affiliation(s)
- Ya-Yan Bao
- College of Chemistry, State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, People's Republic of China
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36
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Hindo SS, Shakya R, Shanmugam R, Heeg MJ, Verani CN. Metalloamphiphiles with [Cu
2
] and [Cu
4
] Headgroups: Syntheses, Structures, Langmuir Films, and Effect of Subphase Changes. Eur J Inorg Chem 2009. [DOI: 10.1002/ejic.200900636] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Sarmad Sahiel Hindo
- Department of Chemistry, Wayne State University, 5101 Cass Ave., Detroit, MI 48202, USA, Fax: +1‐313‐577‐8822
| | - Rajendra Shakya
- Department of Chemistry, Wayne State University, 5101 Cass Ave., Detroit, MI 48202, USA, Fax: +1‐313‐577‐8822
| | - Rama Shanmugam
- Department of Chemistry, Wayne State University, 5101 Cass Ave., Detroit, MI 48202, USA, Fax: +1‐313‐577‐8822
| | - Mary Jane Heeg
- Department of Chemistry, Wayne State University, 5101 Cass Ave., Detroit, MI 48202, USA, Fax: +1‐313‐577‐8822
| | - Cláudio N. Verani
- Department of Chemistry, Wayne State University, 5101 Cass Ave., Detroit, MI 48202, USA, Fax: +1‐313‐577‐8822
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Duffort V, Thouvenot R, Afonso C, Izzet G, Proust A. Straightforward synthesis of new polyoxometalate-based hybrids exemplified by the covalent bonding of a polypyridyl ligand. Chem Commun (Camb) 2009:6062-4. [PMID: 19809644 DOI: 10.1039/b913475a] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new polyoxometalate-based organic-inorganic platform has been designed for further facile derivatization and covalent attachment of organic linkers; this is exemplified by the grafting of a polypyridyl ligand.
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Affiliation(s)
- Victor Duffort
- Institut Parisien de Chimie Moléculaire, UMR 7201, UPMC Univ Paris 06, Equipe Polyoxométallates Case Courrier 42, 4 place Jussieu, 75252 Paris cedex 05, France
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38
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Song YF, McMillan N, Long DL, Kane S, Malm J, Riehle MO, Pradeep CP, Gadegaard N, Cronin L. Micropatterned surfaces with covalently grafted unsymmetrical polyoxometalate-hybrid clusters lead to selective cell adhesion. J Am Chem Soc 2009; 131:1340-1. [PMID: 19138073 DOI: 10.1021/ja807091v] [Citation(s) in RCA: 144] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Mn-Anderson based polyoxometalate clusters with different terminal groups have been patterned successfully onto self-assembled monolayer (SAM) using microcontact printing. Studies of the interactions between the designed SAMs and human fibroblast (hTERT-BJ1) cells have been reported, and it was observed that cells attach and spread efficiently for monolayer presenting a terminal aromatic pyrene platform with a polyoxometalate Mn-Anderson cluster as linker, demonstrating the crucial role played by the polyoxometalate metal oxide cluster as an intermediary in cell adhesion to the surface.
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Affiliation(s)
- Yu-Fei Song
- WestCHEM Department of Chemistry, Joseph Black Building, University of Glasgow, University Avenue, Glasgow, G12 8QQ UK
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39
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Xu B, Xu L, Gao G, Guo W, Liu S. Effects of film structure on electrochromic properties of the multilayer films containing polyoxometalates. J Colloid Interface Sci 2009; 330:408-14. [DOI: 10.1016/j.jcis.2008.10.064] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2008] [Revised: 10/18/2008] [Accepted: 10/21/2008] [Indexed: 10/21/2022]
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40
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Bi LH, Zhou WH, Jiang JG, Dong SJ. Synthesis, characterization of magnesium-substituted tungstoarsenate, , and its electrochromism. J Electroanal Chem (Lausanne) 2008. [DOI: 10.1016/j.jelechem.2008.09.019] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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41
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Chen C, Song Y, Wang L. A Novel Sensor Based on Layer-by-Layer Hybridized Phosphomolybdate and Poly(ferrocenylsilane) on a Cysteamine Modified Gold Electrode. ELECTROANAL 2008. [DOI: 10.1002/elan.200804356] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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42
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Sun H, Bu W, Li Y, Li H, Wu L, Sun C, Dong B, Dou R, Chi L, Schaefer A. Self-assembled monolayers of CH3COS- terminated surfactant-encapsulated polyoxometalate complexes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:4693-4699. [PMID: 18361530 DOI: 10.1021/la702335r] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Self-assembled monolayers (SAMs) on gold surfaces based on three kinds of acetylthio-surfactant-encapsulated polyoxometalate clusters (thio-SECs) terminated with multiple CH(3)COS- groups, (NC(26)H(55)S(CO)CH(3))(6)H(2)[Co(H(2)O)CoW(11)O(39)], (NC(26)H(55)S(CO)CH(3))(13)H(3)[Co(4)(H(2)O)(2)(P(2)W(15)O(56))(2)], and (NC(26)H(55)S(CO)CH(3))(13)[Fe(4)(H(2)O)(2)(P(2)W(15)O(56))(2)]Br, have been prepared, which is representative of a general methodology to fabricate polyoxometalate-based SAMs. Thio-SECs self-assembled into monolayers on gold surfaces through the hydrolysis of CH(3)COS- groups and the subsequent formation of S-Au bonds, which was confirmed by grazing angle infrared spectroscopy, X-ray photoelectron spectroscopy, and ellipsometric and scanning tunneling microscopy (STM) measurements. Furthermore, the SAMs of the thio-SECs possess closely packed structures, and the local short-range order is clearly observed in the magnified STM image. We have also investigated the electrochemical behavior of SAMs of thio-SECs by cyclic voltammetry in detail, and the redox potential of the original polyoxometalates has been well retained. The electrochemical signals of the SAMs are very weak because of the small moiety of thio-SECs that are electrochemically accessible in the cyclic voltammetry experiments. The polyoxometalate-modified electrodes that we prepared are not only highly ordered in the local short range but also stable in electrochemical cycling because of the multiple S-Au bonds of thio-SECs on the gold substrates that aid in the construction of functional materials such as electrochemical and electrocatalytic devices.
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Affiliation(s)
- Hang Sun
- State Key Laboratory of Supramolecular Structure and Materials and College of Chemistry, Jilin University, Changchun 130012, People's Republic of China
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43
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Douvas AM, Makarona E, Glezos N, Argitis P, Mielczarski JA, Mielczarski E. Polyoxometalate-based layered structures for charge transport control in molecular devices. ACS NANO 2008; 2:733-42. [PMID: 19206605 DOI: 10.1021/nn700333j] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Hybrid organic-inorganic films consisted of molecular layers of a Keggin-structure polyoxometalate (POM: 12-tungstophosphoric acid, H(3)PW(12)O(40)) and 1,12-diaminododecane (DD) on 3-aminopropyl triethoxysilane (APTES)-modified silicon surface, fabricated via the layer-by-layer (LBL) self-assembly method are evaluated as molecular materials for electronic devices. The effect of the fabrication process parameters, including primarily compositions of deposition solutions, on the structural characteristics of the POM-based multilayers was studied extensively with a combination of spectroscopic methods (UV, FTIR, and XPS). Well-characterized POM-based films (both single-layers and multilayers) in a controlled and reproducible way were obtained. The conduction mechanisms in single-layered and multilayered structures were elucidated by the electrical characterization of the produced films supported by the appropriate theoretical analysis. Fowler-Nordheim (FN) tunneling and percolation mechanisms were encountered in good correlation with the structural characteristics of the films encouraging further investigation on the use of these materials in electronic and, in particular, in memory devices.
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Affiliation(s)
- Antonios M Douvas
- Institute of Microelectronics, National Center of Scientific Research "Demokritos", 15310 Aghia Paraskevi, Athens, Greece
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Bi LH, McCormac T, Beloshapkin S, Dempsey E. Electrochemical Behavior and Multilayer Assembly Films with Fine Functional Activities of the Sandwich-Type Polyoxometallate [Sb2W20Fe2O70(H2O)6]8−. ELECTROANAL 2008. [DOI: 10.1002/elan.200704021] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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45
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Prouzet E, Ravaine S, Sanchez C, Backov R. Bio-inspired synthetic pathways and beyond: integrative chemistry. NEW J CHEM 2008. [DOI: 10.1039/b802527b] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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46
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Kurth DG. Metallo-supramolecular modules as a paradigm for materials science. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2008; 9:014103. [PMID: 27877929 PMCID: PMC5099798 DOI: 10.1088/1468-6996/9/1/014103] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2007] [Revised: 03/13/2008] [Accepted: 12/17/2007] [Indexed: 05/27/2023]
Abstract
Metal ion coordination in discrete or extended metallo-supramolecular assemblies offers ample opportunity to fabricate and study devices and materials that are equally important for fundamental research and new technologies. Metal ions embedded in a specific ligand field offer diverse thermodynamic, kinetic, chemical, physical and structural properties that make these systems promising candidates for active components in functional materials. A key challenge is to improve and develop methodologies for placing these active modules in suitable device architectures, such as thin films or mesophases. This review highlights recent developments in extended, polymeric metallo-supramolecular systems and discrete polyoxometalates with an emphasis on materials science.
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Affiliation(s)
- Dirk G. Kurth
- National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan and Max Planck Institute of Colloids and Interfaces, D-14424 Potsdam, Germany
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Proust A, Thouvenot R, Gouzerh P. Functionalization of polyoxometalates: towards advanced applications in catalysis and materials science. Chem Commun (Camb) 2008:1837-52. [DOI: 10.1039/b715502f] [Citation(s) in RCA: 794] [Impact Index Per Article: 49.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Akutagawa T, Jin R, Tunashima R, Noro SI, Cronin L, Nakamura T. Nanoscale assemblies of gigantic molecular {Mo154}-rings: (dimethyldioctadecylammonium)20[Mo154O462H8(H2O)70]. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:231-238. [PMID: 18041852 DOI: 10.1021/la701364k] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Clusters based on the mixed-valence gigantic inorganic ring [Mo154O462H14(H2O)70]14- ({Mo154}-ring) and dimethyldioctadecylammonium (DODA) were combined to form novel molecular assemblies of an inorganic-organic hybrid molecular system as Langmuir-Blodgett (LB) and cast films. (DODA)20[Mo154O462H8(H2O)70] (2) was prepared by cation exchange and was characterized by a combination of thermogravimetry, IR, UV-vis-NIR, 1H NMR, and XRD measurements. The salt 2 was soluble in common organic solvents, and the chemical stability of {Mo154}-ring encapsulated by DODA cationic surfactants in CHCl3 was found to be higher than that of the "native" sodium salt of the {Mo154}-ring in H2O. Uniform spherical vesicle-like molecular assemblies of (DODA)20[Mo154O462H8(H2O)70] were observed in dilute THF, whose average diameter of 95 nm and a normalized variance of 5.7% were confirmed by a X-ray small-angle scattering. Deposition of 2 as a cast film showed circular domains with a typical diameter of approximately 100 nm, indicating possible similarities between solution and surface-deposited structures. The resulting LB films of salt 2 were transferred from an acidic buffer subphase with pH = 1.5 onto mica, giving a two-dimensional film surface with a unity transfer ratio. Further, the electronic absorption spectra of the LB multilayer were consistent with the classic type II mixed-valence MoV/MoVI electronic state well know for molybdenum blue {Mo154}-ring systems, and it appears that on the surface the plane of the {Mo154}-ring is approximately parallel to the substrate surface, as indicated by polarized electronic spectra, while the alkyl chains of DODA were relatively normal to the substrate surface. Therefore, the layer between the {Mo154}-rings and DODA cations was alternately stacked along the direction of film propagation. Finally, it was found that the surface morphology of the cast and LB films was determined by the molecular assembly of (DODA)20[Mo154O462H8(H2O)70] in solution and the air-water interface, respectively.
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Affiliation(s)
- Tomoyuki Akutagawa
- Research Institute for Electronic Science, Hokkaido University, Sapporo, Japan.
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Jiang M, Liu M. A photoluminescent switch based on the hybrid organized molecular films of decatungsteuropate and some amphiphiles. J Colloid Interface Sci 2007; 316:100-6. [PMID: 17765259 DOI: 10.1016/j.jcis.2007.07.081] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2007] [Revised: 07/07/2007] [Accepted: 07/28/2007] [Indexed: 11/23/2022]
Abstract
Hybrid organized molecular films composed of a polyoxometalate, decatungsteuropate (EuW(10)), and amphiphiles such as hexadecyltrimethylammonium bromide (CTAB), n-octadecylamine (ODA) and 4-hexadecylaniline (HDA) were fabricated by Langmuir-Blodgett (LB) technique and their photoluminescent properties were investigated. The hybrid films, which were formed through in situ complex formation at the air/water interface and subsequently transferred onto the solid substrate, were characterized by UV-vis, FT-IR, fluorescence, and AFM measurements. The transferred hybrid films showed red emission characteristic of the Eu(III) ion upon UV irradiation. The photoluminescence of the hybrid films was sensitive to the acid and base gases. When ODA/EuW(10) and HDA/EuW(10) hybrid films were exposed to HCl gas, their photoluminescence disappeared completely. Interestingly, the photoluminescence was recovered upon subsequent exposing the same film to NH(3) gas. Such process could be repeated many times and a switch based on these hybrid films was proposed. On the other hand, the photoluminescent intensity of CTAB/EuW(10) film decreased but never disappeared upon exposing to HCl gas. Similarly, the photoluminescence could also be partially recovered upon exposing to NH(3) gas. Detailed investigation on the spectral changes of the films revealed that the interaction between EuW(10) and CTAB and was different from EuW(10) with ODA or HDA, and protonation of amine group in ODA or HDA induced by HCl gas played an important role in realizing the "on" and "off" photoluminescence switch of the hybrid films.
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Affiliation(s)
- Min Jiang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid and Interface Science, Institute of Chemistry, CAS, Beijing 100080, PR China
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Shakya R, Hindo S, Wu L, Ni S, Allard M, Heeg M, da Rocha S, Yee G, Hratchian H, Verani C. Amphiphilic and Magnetic Properties of a New Class of Cluster-Bearing [L2Cu4(μ4-O)(μ2-carboxylato)4] Soft Materials. Chemistry 2007; 13:9948-56. [DOI: 10.1002/chem.200700875] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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