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McNulty RC, Penston K, Amin SS, Stal S, Lee JY, Samperi M, Pérez‐García L, Cameron JM, Johnson LR, Amabilino DB, Newton GN. Self-Assembled Surfactant-Polyoxovanadate Soft Materials as Tuneable Vanadium Oxide Cathode Precursors for Lithium-Ion Batteries. Angew Chem Int Ed Engl 2023; 62:e202216066. [PMID: 36637995 PMCID: PMC10962574 DOI: 10.1002/anie.202216066] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 01/12/2023] [Accepted: 01/13/2023] [Indexed: 01/14/2023]
Abstract
The mixing of [V10 O28 ]6- decavanadate anions with a dicationic gemini surfactant (gem) leads to the spontaneous self-assembly of surfactant-templated nanostructured arrays of decavanadate clusters. Calcination of the material under air yields highly crystalline, sponge-like V2 O5 (gem-V2 O5 ). In contrast, calcination of the amorphous tetrabutylammonium decavanadate allows isolation of a more agglomerated V2 O5 consisting of very small crystallites (TBA-V2 O5 ). Electrochemical analysis of the materials' performance as lithium-ion intercalation electrodes highlights the role of morphology in cathode performance. The large crystallites and long-range microstructure of the gem-V2 O5 cathode deliver higher initial capacity and superior capacity retention than TBA-V2 O5 . The smaller crystallite size and higher surface area of TBA-V2 O5 allow faster lithium insertion and superior rate performance to gem-V2 O5 .
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Affiliation(s)
- Rory C. McNulty
- Nottingham Applied Materials and Interfaces (NAMI) GroupSchool of ChemistryUniversity of NottinghamNottinghamNG7 2TUUK
- The Faraday Institution, Quad OneHarwell Science and Innovation CampusDidcotOX11 0RAUK
| | - Keir Penston
- Nottingham Applied Materials and Interfaces (NAMI) GroupSchool of ChemistryUniversity of NottinghamNottinghamNG7 2TUUK
| | - Sharad S. Amin
- Nottingham Applied Materials and Interfaces (NAMI) GroupSchool of ChemistryUniversity of NottinghamNottinghamNG7 2TUUK
| | - Sandro Stal
- Nottingham Applied Materials and Interfaces (NAMI) GroupSchool of ChemistryUniversity of NottinghamNottinghamNG7 2TUUK
| | - Jie Yie Lee
- GSK Carbon Neutral Laboratories for Sustainable ChemistrySchool of ChemistryUniversity of NottinghamNottinghamNG7 2TUUK
| | - Mario Samperi
- GSK Carbon Neutral Laboratories for Sustainable ChemistrySchool of ChemistryUniversity of NottinghamNottinghamNG7 2TUUK
- CNR-ITAEVia Salita Santa Lucia Sopra Contesse 598126MessinaItaly
| | - Lluïsa Pérez‐García
- Departament de Farmacologia i Química TerapèuticaUniversitat de BarcelonaAv. Joan XXIII, 27–3108028BarcelonaSpain
| | - Jamie M. Cameron
- Nottingham Applied Materials and Interfaces (NAMI) GroupSchool of ChemistryUniversity of NottinghamNottinghamNG7 2TUUK
| | - Lee R. Johnson
- Nottingham Applied Materials and Interfaces (NAMI) GroupSchool of ChemistryUniversity of NottinghamNottinghamNG7 2TUUK
- The Faraday Institution, Quad OneHarwell Science and Innovation CampusDidcotOX11 0RAUK
| | - David B. Amabilino
- GSK Carbon Neutral Laboratories for Sustainable ChemistrySchool of ChemistryUniversity of NottinghamNottinghamNG7 2TUUK
- Institut de Ciència de Materials de Barcelona (ICMAB) Consejo Superior de Investigaciones CientíficasCampus Universitari de Bellaterra8193Cerdanyola del VallèsSpain
| | - Graham N. Newton
- Nottingham Applied Materials and Interfaces (NAMI) GroupSchool of ChemistryUniversity of NottinghamNottinghamNG7 2TUUK
- The Faraday Institution, Quad OneHarwell Science and Innovation CampusDidcotOX11 0RAUK
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2
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Kibler A, Tsang N, Winslow M, Argent SP, Lam HW, Robinson D, Newton GN. Electronic Structure and Photoactivity of Organoarsenic Hybrid Polyoxometalates. Inorg Chem 2023; 62:3585-3591. [PMID: 36763348 PMCID: PMC9976276 DOI: 10.1021/acs.inorgchem.2c04249] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
Organofunctionalization of polyoxometalates (POMs) allows the preparation of hybrid molecular systems with tunable electronic properties. Currently, there are only a handful of approaches that allow for the fine-tuning of POM frontier molecular orbitals in a predictable manner. Herein, we demonstrate a new functionalization method for the Wells-Dawson polyoxotungstate [P2W18O62]6- using arylarsonic acids which enables modulation of the redox and photochemical properties. Arylarsonic groups facilitate orbital mixing between the organic and inorganic moieties, and the nature of the organic substituents significantly impacts the redox potentials of the POM core. The photochemical response of the hybrid POMs correlates with their computed and experimentally estimated lowest unoccupied molecular orbital energies, and the arylarsonic hybrids are found to exhibit increased visible light photosensitivity comparable with that of arylphosphonic analogues. Arylarsonic hybridization offers a route to stable and tunable organic-inorganic hybrid systems for a range of redox and photochemical applications.
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Affiliation(s)
- Alexander
J. Kibler
- The
GSK Carbon Neutral Laboratories for Sustainable Chemistry, School
of Chemistry, University of Nottingham, Jubilee Campus, Nottingham NG7 2TU, U.K.
| | - Nicole Tsang
- The
GSK Carbon Neutral Laboratories for Sustainable Chemistry, School
of Chemistry, University of Nottingham, Jubilee Campus, Nottingham NG7 2TU, U.K.
| | - Max Winslow
- Department
of Chemistry and Forensics, School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham NG11 8NS, U.K.
| | - Stephen P. Argent
- School
of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, U.K.
| | - Hon Wai Lam
- The
GSK Carbon Neutral Laboratories for Sustainable Chemistry, School
of Chemistry, University of Nottingham, Jubilee Campus, Nottingham NG7 2TU, U.K.
| | - David Robinson
- Department
of Chemistry and Forensics, School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham NG11 8NS, U.K.
| | - Graham N. Newton
- The
GSK Carbon Neutral Laboratories for Sustainable Chemistry, School
of Chemistry, University of Nottingham, Jubilee Campus, Nottingham NG7 2TU, U.K.,
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3
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Chakraborty S, Schreiber E, Sanchez-Lievanos KR, Tariq M, Brennessel WW, Knowles KE, Matson EM. Modelling local structural and electronic consequences of proton and hydrogen-atom uptake in VO 2 with polyoxovanadate clusters. Chem Sci 2021; 12:12744-12753. [PMID: 34703561 PMCID: PMC8494032 DOI: 10.1039/d1sc02809j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2021] [Accepted: 08/24/2021] [Indexed: 11/21/2022] Open
Abstract
We report the synthesis and characterisation of a series of siloxide-functionalised polyoxovanadate-alkoxide (POV-alkoxide) clusters, [V6O6(OSiMe3)(OMe)12] n (n = 1-, 2-), that serve as molecular models for proton and hydrogen-atom uptake in vanadium dioxide, respectively. Installation of a siloxide moiety on the surface of the Lindqvist core was accomplished via addition of trimethylsilyl trifluoromethylsulfonate to the fully-oxygenated cluster [V6O7(OMe)12]2-. Characterisation of [V6O6(OSiMe3)(OMe)12]1- by X-ray photoelectron spectroscopy reveals that the incorporation of the siloxide group does not result in charge separation within the hexavanadate assembly, an observation that contrasts directly with the behavior of clusters bearing substitutional dopants. The reduced assembly, [V6O6(OSiMe3)(OMe)12]2-, provides an isoelectronic model for H-doped VO2, with a vanadium(iii) ion embedded within the cluster core. Notably, structural analysis of [V6O6(OSiMe3)(OMe)12]2- reveals bond perturbations at the siloxide-functionalised vanadium centre that resemble those invoked upon H-atom uptake in VO2 through ab initio calculations. Our results offer atomically precise insight into the local structural and electronic consequences of the installation of hydrogen-atom-like dopants in VO2, and challenge current perspectives of the operative mechanism of electron-proton co-doping in these materials.
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Affiliation(s)
| | - Eric Schreiber
- Department of Chemistry, University of Rochester Rochester NY 14627 USA
| | | | - Mehrin Tariq
- Department of Chemistry, University of Rochester Rochester NY 14627 USA
| | | | - Kathryn E Knowles
- Department of Chemistry, University of Rochester Rochester NY 14627 USA
| | - Ellen M Matson
- Department of Chemistry, University of Rochester Rochester NY 14627 USA
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4
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Olsen MR, Colliard I, Rahman T, Miyaishi TC, Harper B, Harper S, Nyman M. Hybrid Polyoxometalate Salt Adhesion by Butyltin Functionalization. ACS APPLIED MATERIALS & INTERFACES 2021; 13:19497-19506. [PMID: 33856779 DOI: 10.1021/acsami.1c03269] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Polyoxometalate (POM)-based ionic liquids, with nearly infinite compositional variations to fine-tune antimicrobial and physical properties, function as water purification filters, anticorrosion/antibacterial coatings for natural stones, self-repairing acid-resistant coatings, catalysts, and electroactive, stable solvents. By combining hydrophobic quaternary ammonium cations (QACs; tetraheptylammonium and trihexyltetradecylammonium) with butyltin-substituted polyoxotungstates [(BuSn)3(α-SiW9O37)] via repeated solvent extraction-ion exchange, we obtained phase-pure hybrid POM salts (referred to as such because they melt above room temperature). If the solvent extraction process is performed only once, then solids with high salt contamination and considerably lower melting temperatures are obtained. Solution-phase behavior, based on POM-QAC interactions, was similar for all formulations in polar and nonpolar organic solvents, as observed by X-ray scattering and multinuclear magnetic resonance spectroscopy. However, solid thin films of the butyltin-functionalized hybrid POM salts were significantly more stable and adhesive than their inorganic analogues. We attribute this to the favorable hydrophobic interactions between the butyltin groups and the QACs. All synthesized hybrid POM salts display a potent antimicrobial activity toward Escherichia coli. These studies provide fundamental form-function understanding of hybrid POM salts, based on interactions between ions in these complex hybrid phases.
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Affiliation(s)
- Morgan Rose Olsen
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
- Department of Chemistry, Reed College, Portland, Oregon 97202, United States
| | - Ian Colliard
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
| | - Tasnim Rahman
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
| | - Taiki C Miyaishi
- Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis, Oregon 97331, United States
- School of Chemical, Biological and Environmental Engineering, Oregon State University, Corvallis, Oregon 97331, United States
| | - Bryan Harper
- Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis, Oregon 97331, United States
| | - Stacey Harper
- Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis, Oregon 97331, United States
- School of Chemical, Biological and Environmental Engineering, Oregon State University, Corvallis, Oregon 97331, United States
| | - May Nyman
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
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5
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Kibler AJ, Souza VS, Fernandes JA, Lewis W, Argent SP, Dupont J, Newton GN. A Cooperative Photoactive Class-I Hybrid Polyoxometalate With Benzothiadiazole-Imidazolium Cations. Front Chem 2021; 8:612535. [PMID: 33520936 PMCID: PMC7841050 DOI: 10.3389/fchem.2020.612535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 12/09/2020] [Indexed: 11/13/2022] Open
Abstract
An organic–inorganic hybrid species based on the Wells–Dawson polyoxotungstate [P2W18O62]6− and novel fluorescent benzothiadiazole–imidazolium cations, [BTD-4,7-ImH]2+, has been synthesized. X-ray crystallographic analysis shows that the inorganic and organic components form a hydrogen-bonded superstructure and that the cations are revealed to be non-equivalent with varying degrees of rotation between the BTD and imidazolium rings due to competition between weak intra- and intermolecular interactions. The UV–vis diffuse reflectance spectra indicate that the hybrid has a band gap of 3.13 eV, while the solid-state fluorescence properties of the cation are quenched in the hybrid material, suggesting the existence of electron transfer between the inorganic and organic components. The highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) energies of the polyoxometalate (POM) and BTD-4,7-ImH precursors, estimated through UV–vis absorption spectroscopy and cyclic voltammetry, indicate that electron transfer from the BTD cations to the POM may occur in the excited state.
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Affiliation(s)
- Alexander J Kibler
- GlaxoSmithKline Carbon Neutral Laboratories for Sustainable Chemistry, Department of Chemistry, University of Nottingham, Nottingham, United Kingdom
| | - Virginia S Souza
- Laboratory of Molecular Catalysis, Institute of Chemistry, Universidade Federal do Rio Grande Do Sul, Porto Alegre, Brazil
| | - Jesum Alves Fernandes
- Department of Chemistry, School of Chemistry, University of Nottingham, Nottingham, United Kingdom
| | - William Lewis
- Department of Chemistry, School of Chemistry, University of Nottingham, Nottingham, United Kingdom
| | - Stephen P Argent
- Department of Chemistry, School of Chemistry, University of Nottingham, Nottingham, United Kingdom
| | - Jairton Dupont
- Laboratory of Molecular Catalysis, Institute of Chemistry, Universidade Federal do Rio Grande Do Sul, Porto Alegre, Brazil
| | - Graham N Newton
- GlaxoSmithKline Carbon Neutral Laboratories for Sustainable Chemistry, Department of Chemistry, University of Nottingham, Nottingham, United Kingdom
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7
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Wang W, Izarova NV, van Leusen J, Kögerler P. Polyoxometalates with separate lacuna sites. Chem Commun (Camb) 2020; 56:14857-14860. [PMID: 33174872 DOI: 10.1039/d0cc05791f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Bi-functionalizion of Wells-Dawson-type polyoxotungstates with exo-coordinated rare earth metal ions (M = DyIII, YIII) and phenylphosphonate induces the formation of a separate second lacunary site in the pre-functionalized [α2-P2W17O61(PhPO)2]6- precursor. The resulting [{(H2O)xM2(α2,α2'-P2W16O60)(PhPO)2}2]8- dimer clusters are stable in solution, exhibit interesting electrochemical behavior, and, for the DyIII derivative, single ion-magnet characteristics.
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Affiliation(s)
- Wenyan Wang
- Institute of Inorganic Chemistry, RWTH Aachen University, D-52074 Aachen, Germany.
| | - Natalya V Izarova
- Institute of Inorganic Chemistry, RWTH Aachen University, D-52074 Aachen, Germany. and Jülich-Aachen Research Alliance (JARA-FIT) and Peter Grünberg Institute - PGI 6, Forschungszentrum Jülich, D-52425 Jülich, Germany
| | - Jan van Leusen
- Institute of Inorganic Chemistry, RWTH Aachen University, D-52074 Aachen, Germany.
| | - Paul Kögerler
- Institute of Inorganic Chemistry, RWTH Aachen University, D-52074 Aachen, Germany. and Jülich-Aachen Research Alliance (JARA-FIT) and Peter Grünberg Institute - PGI 6, Forschungszentrum Jülich, D-52425 Jülich, Germany
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8
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Hampson E, Cameron JM, Watts JA, Newton GN. Transition metal decorated soft nanomaterials through modular self-assembly of an asymmetric hybrid polyoxometalate. Chem Commun (Camb) 2020; 56:8237-8240. [PMID: 32558835 DOI: 10.1039/d0cc03554h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
An asymmetrically functionalised Wells-Dawson organic-inorganic hybrid polyoxometalate has been post-functionalised by Pt2+ coordination, and demonstrates self-assembly into surface-decorated micellar nanostructures. This multifunctional hybrid material is found to be a redox-active soft nanomaterial and demonstrates a new molecular design strategy with potential for applications in photo- or electro-catalysis.
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Affiliation(s)
- Elizabeth Hampson
- GSK Carbon Neutral Laboratory for Sustainable Chemistry, University of Nottingham, Nottingham, NG7 2GA, UK.
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