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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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Li K, Zhu KL, Cui LP, Chen JJ. Insights into the self-assembly of giant polyoxomolybdates from building blocks to supramolecular structures. Dalton Trans 2023; 52:15168-15177. [PMID: 36861841 DOI: 10.1039/d3dt00105a] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
Giant polyoxomolybdates are a special class of polyoxometalate clusters which can bridge the gap between small molecule clusters and large polymeric entities. Besides, giant polyoxomolybdates also show interesting applications in catalysis, biochemistry, photovoltaic and electronic devices, and other fields. Revealing the evolution route of the reducing species into the final cluster structure and also their further hierarchical self-assembly behaviour is undoubtedly fascinating, aiming to guide the design and synthesis. Herein, we reviewed the self-assembly mechanism study of giant polyoxomolybdate clusters, and the exploration of a new structure and new synthesis methodology is also summarized. Finally, we emphasize the importance of in-operando characterization in revealing the self-assembly mechanism of giant polyoxomolybdates, and especially for the further reconstruction of intermediates into the designable synthesis of new structures.
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Affiliation(s)
- Ke Li
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Collaborative Innovation Center of Chemistry for Energy Materials (iChem), Engineering Research Center of Electrochemical Technologies of Ministry of Education, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian, 361005, China.
| | - Kai-Ling Zhu
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Collaborative Innovation Center of Chemistry for Energy Materials (iChem), Engineering Research Center of Electrochemical Technologies of Ministry of Education, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian, 361005, China.
| | - Li-Ping Cui
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Collaborative Innovation Center of Chemistry for Energy Materials (iChem), Engineering Research Center of Electrochemical Technologies of Ministry of Education, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian, 361005, China.
| | - Jia-Jia Chen
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Collaborative Innovation Center of Chemistry for Energy Materials (iChem), Engineering Research Center of Electrochemical Technologies of Ministry of Education, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian, 361005, China.
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Pow RW, Sinclair ZL, Bell NL, Watfa N, Abul‐Haija YM, Long D, Cronin L. Enantioselective Recognition of Racemic Amino Alcohols in Aqueous Solution by Chiral Metal-Oxide Keplerate {Mo 132 } Cluster Capsules. Chemistry 2021; 27:12327-12334. [PMID: 34196438 PMCID: PMC8457076 DOI: 10.1002/chem.202100899] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Indexed: 11/06/2022]
Abstract
Determining the relative configuration or enantiomeric excess of a substance may be achieved using NMR spectroscopy by employing chiral shift reagents (CSRs). Such reagents interact noncovalently with the chiral solute, resulting in each chiral form experiencing different magnetic anisotropy; this is then reflected in their NMR spectra. The Keplerate polyoxometalate (POM) is a molybdenum-based, water-soluble, discrete inorganic structure with a pore-accessible inner cavity, decorated by differentiable ligands. Through ligand exchange from the self-assembled nanostructure, a set of chiral Keplerate host molecules has been synthesised. By exploiting the interactions of analyte molecules at the surface pores, the relative configuration of chiral amino alcohol guests (phenylalaninol and 2-amino-1-phenylethanol) in aqueous solvent was establish and their enantiomeric excess was determined by 1 H NMR using shifts of ΔΔδ=0.06 ppm. The use of POMs as chiral shift reagents represents an application of a class that is yet to be well established and opens avenues into aqueous host-guest chemistry with self-assembled recognition agents.
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Affiliation(s)
- Robert W. Pow
- Department of ChemistryUniversity of GlasgowUniversity AvenueGlasgowG12 8QQUK
| | - Zoё L. Sinclair
- Department of ChemistryUniversity of GlasgowUniversity AvenueGlasgowG12 8QQUK
| | - Nicola L. Bell
- Department of ChemistryUniversity of GlasgowUniversity AvenueGlasgowG12 8QQUK
| | - Nancy Watfa
- Department of ChemistryUniversity of GlasgowUniversity AvenueGlasgowG12 8QQUK
| | | | - De‐Liang Long
- Department of ChemistryUniversity of GlasgowUniversity AvenueGlasgowG12 8QQUK
| | - Leroy Cronin
- Department of ChemistryUniversity of GlasgowUniversity AvenueGlasgowG12 8QQUK
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Pow RW, Xuan W, Long DL, Bell NL, Cronin L. Embedding alkenes within an icosahedral inorganic fullerene {(NH 4) 42[Mo 132O 372(L) 30(H 2O) 72]} for trapping volatile organics. Chem Sci 2020; 11:2388-2393. [PMID: 34084401 PMCID: PMC8157328 DOI: 10.1039/c9sc06217c] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Eight alkene-functionalized molybdenum-based spherical Keplerate-type (inorganic fullerene) structures have been obtained via both direct and multistep synthetic approaches. Driven by the opportunity to design unique host-guest interactions within hydrophobic, π-electron rich confined environments, we have synthesised {(NH4)42[Mo132O372(L)30(H2O)72]}, where L = (1) acrylic acid, (2) crotonic acid, (3) methacrylic acid, (4) tiglic acid, (5) 3-butenoic acid, (6) 4-pentenoic acid, (7) 5-hexenoic acid, and (8) sorbic acid. The compounds, which are obtained in good yield (10-40%), contain 30 carboxylate-coordinated alkene ligands which create a central cavity with hydrophobic character. Extensive Nuclear Magnetic Resonance (NMR) spectroscopy studies contribute significantly to the complete characterisation of the structures obtained, including both 1D and 2D measurements. In addition, single-crystal X-ray crystallography and subsequently-generated electron density maps are employed to highlight the distribution in ligand tail positions. These alkene-containing structures are shown to effectively encapsulate small alkyl thiols (1-propanethiol (A), 2-propanethiol (B), 1-butanethiol (C), 2-butanethiol (D) and 2-methyl-1-propanethiol (E)) as guests within the central cavity in aqueous solution. The hydrophobically driven clustering of up to 6 equivalents of volatile thiol guests within the central cavity of the Keplerate-type structure results in effective thermal protection, preventing evaporation at elevated temperatures (ΔT ≈ 25 K).
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Affiliation(s)
- Robert W Pow
- School of Chemistry, University of Glasgow University Avenue Glasgow G12 8QQ UK
| | - Weimin Xuan
- School of Chemistry, University of Glasgow University Avenue Glasgow G12 8QQ UK
| | - De-Liang Long
- School of Chemistry, University of Glasgow University Avenue Glasgow G12 8QQ UK
| | - Nicola L Bell
- School of Chemistry, University of Glasgow University Avenue Glasgow G12 8QQ UK
| | - Leroy Cronin
- School of Chemistry, University of Glasgow University Avenue Glasgow G12 8QQ UK
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Elistratova J, Akhmadeev B, Korenev V, Sokolov M, Nizameev I, Gubaidullin A, Voloshina A, Mustafina A. Self-assembly of Gd 3+-bound keplerate polyanions into nanoparticles as a route for the synthesis of positive MRI contrast agents. Impact of the structure on the magnetic relaxivity. SOFT MATTER 2018; 14:7916-7925. [PMID: 30246848 DOI: 10.1039/c8sm01214h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The present work introduces Gd3+ complexes with giant keplerate polyanions as a promising basis for MRI contrast agents. The impact of Gd3+ binding with different building blocks of keplerates on the magnetic relaxivity of the complexes is revealed by comparative study of the keplerates [{Mo6O21}12{Mo2O4(OAc)}30]42-, [{Mo6O21}12{Mo2O4(HPO4)}30]72-, and [{Mo6O21}12{Mo2O2S2(OAc)}30]42-. Unprecedentedly high longitudinal and transverse relaxivity values (up to 250 and 300 mM-1 s-1 correspondingly) are achieved for the keplerates possessing edl{Mo2O4(OAc)} and {Mo2O4(HPO42-)} moieties under their 1 : 1 complex formation with Gd3+. The transformation of the external pores from Mo9O9 to Mo9O6S3 in the {Mo2O2S2(OAc)}-keplerate and an increase in the Gd3+-to-keplerate ratio are the factors that decrease the relaxivity. The rapid degradation of the free keplerates in aqueous solutions restricts the use of the Gd3+-bound keplerates with 1 : 1 stoichiometry as MRI contrast agents. In this work, the optimized stoichiometry of the complexes, their self-assembly into ultra-small nanoparticles and their hydrophilic coating by a triblock copolymer are highlighted as tools for increasing both the colloid and chemical stability of the keplerate complexes. Optimal keplerate compositions have been identified to achieve a compromise of low cytotoxicity and high stability; these Gd3+-bound keplerates exhibit longitudinal and transverse relaxivity values (95 and 114 mM-1 s-1, respectively), well within the region of interest for MRI techniques.
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Affiliation(s)
- Julia Elistratova
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov str., 8, 420088, Kazan, Russia.
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Haouas M, Trébosc J, Roch-Marchal C, Cadot E, Taulelle F, Martineau-Corcos C. High-field 95 Mo and 183 W static and MAS NMR study of polyoxometalates. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2017; 55:902-908. [PMID: 28437584 DOI: 10.1002/mrc.4601] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Revised: 04/18/2017] [Accepted: 04/19/2017] [Indexed: 06/07/2023]
Abstract
The potential of high-field NMR to measure solid-state 95 Mo and 183 W NMR in polyoxometalates (POMs) is explored using some archetypical structures like Lindqvist, Keggin and Dawson as model compounds that are well characterized in solution. NMR spectra in static and under magic angle spinning (MAS) were obtained, and their analysis allowed extraction of the NMR parameters, including chemical shift anisotropy and quadrupolar coupling parameters. Despite the inherent difficulties of measurement in solid state of these low-gamma NMR nuclei, due mainly to the low spectral resolution and poor signal-to-noise ratio, the observed global trends compare well with the solution-state NMR data. This would open an avenue for application of solid-state NMR to POMs, especially when liquid-state NMR is not possible, e.g., for poorly soluble or unstable compounds in solution, and for giant molecules with slow tumbling motion. This is the case of Keplerate where we provide here the first NMR characterization of this class of POMs in the solid state. Copyright © 2017 John Wiley & Sons, Ltd.
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Affiliation(s)
- Mohamed Haouas
- ILV, UMR CNRS 8180, UVSQ, Versailles, 78035, Cedex, France
| | - Julien Trébosc
- Univ. de Lille Nord de France, Lille, 59000, France
- CNRS UMR 8181, UCCS; USTL, Villeneuve d'Ascq, 59652, France
| | | | - Emmanuel Cadot
- ILV, UMR CNRS 8180, UVSQ, Versailles, 78035, Cedex, France
| | | | - Charlotte Martineau-Corcos
- ILV, UMR CNRS 8180, UVSQ, Versailles, 78035, Cedex, France
- CEMHTI, CNRS UPR 3079, Orléans Cedex 2, 45071, France
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