1
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Figueiredo NM, Voroshylova IV, Ferreira ESC, Marques JMC, Cordeiro MNS. Magnetic Ionic Liquids: Current Achievements and Future Perspectives with a Focus on Computational Approaches. Chem Rev 2024; 124:3392-3415. [PMID: 38466339 PMCID: PMC10979404 DOI: 10.1021/acs.chemrev.3c00678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 02/29/2024] [Accepted: 03/05/2024] [Indexed: 03/12/2024]
Abstract
Magnetic ionic liquids (MILs) stand out as a remarkable subclass of ionic liquids (ILs), combining the desirable features of traditional ILs with the unique ability to respond to external magnetic fields. The incorporation of paramagnetic species into their structures endows them with additional attractive features, including thermochromic behavior and luminescence. These exceptional properties position MILs as highly promising materials for diverse applications, such as gas capture, DNA extractions, and sensing technologies. The present Review synthesizes key experimental findings, offering insights into the structural, thermal, magnetic, and optical properties across various MIL families. Special emphasis is placed on unraveling the influence of different paramagnetic species on MILs' behavior and functionality. Additionally, the Review highlights recent advancements in computational approaches applied to MIL research. By leveraging molecular dynamics (MD) simulations and density functional theory (DFT) calculations, these computational techniques have provided invaluable insights into the underlying mechanisms governing MILs' behavior, facilitating accurate property predictions. In conclusion, this Review provides a comprehensive overview of the current state of research on MILs, showcasing their special properties and potential applications while highlighting the indispensable role of computational methods in unraveling the complexities of these intriguing materials. The Review concludes with a forward-looking perspective on the future directions of research in the field of magnetic ionic liquids.
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Affiliation(s)
- Nádia M. Figueiredo
- LAQV@REQUIMTE,
Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal
| | - Iuliia V. Voroshylova
- LAQV@REQUIMTE,
Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal
| | - Elisabete S. C. Ferreira
- LAQV@REQUIMTE,
Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal
| | - Jorge M. C. Marques
- CQC−IMS,
Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
| | - M. Natália
D. S. Cordeiro
- LAQV@REQUIMTE,
Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal
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2
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Chen R, Zhang P, Chang Z, Yan J, Kraus T. Grafting and Solubilization of Redox-Active Organic Materials for Aqueous Redox Flow Batteries. CHEMSUSCHEM 2023; 16:e202201993. [PMID: 36625759 DOI: 10.1002/cssc.202201993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 01/09/2023] [Indexed: 06/17/2023]
Abstract
This study concerns the development of sustainable design strategies of aqueous electrolytes for redox flow batteries using redox-active organic materials. A green spontaneous grafting reaction occurs between a redox-active organic radical and an electrochemically activated structural modifier at room temperature through a simple mixing step. Then, a physical mixing method is used to formulate a structured aqueous electrolyte and enables aqueous solubilization of the organic solute from below 0.5 to 1.5 m beyond the conventional dissolution limit. The as-obtained concentrated mixture can be readily used as catholyte for a redox flow battery. A record high discharge cell voltage (1.6 V onset output voltage) in aqueous non-hybrid flow cell is attained by using the studied electrolytes.
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Affiliation(s)
- Ruiyong Chen
- Saarland University, KIST Europe, 66123, Saarbrücken, Germany
- Materials Innovation Factory, Department of Chemistry, University of Liverpool, L7 3NY, Liverpool, United Kingdom
| | - Peng Zhang
- School of Materials Science and Engineering, Sun Yat-sen University, 510275, Guangzhou, P. R. China
| | - Zhenjun Chang
- College of Materials Science and Engineering, Jiangsu University of Science and Technology, 212003, Zhenjiang, P. R. China
| | - Junfeng Yan
- School of Information Science and Technology, Northwest University, 710127, Xi'an, P. R. China
| | - Tobias Kraus
- INM-Leibniz Institute for New Materials, 66123, Saarbrücken, Germany
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3
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Goloviznina K, Salanne M. Electrochemical Properties and Local Structure of the TEMPO/TEMPO + Redox Pair in Ionic Liquids. J Phys Chem B 2023; 127:742-756. [PMID: 36651119 DOI: 10.1021/acs.jpcb.2c07238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Redox-active organic species play an important role in catalysis, energy storage, and biotechnology. One of the representatives is the 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) radical, used as a mediator in organic synthesis and considered a safe alternative to heavy metals. In order to develop a TEMPO-based system with well-controlled electrochemical and catalytic properties, a reaction medium should be carefully chosen. Being highly conductive, stable, and low flammability fluids, ionic liquids (ILs) seem to be promising solvents with easily adjustable physical and solvation properties. In this work, we give an insight into the local structure of ILs around TEMPO and its oxidized form, TEMPO+, underlining striking differences in the solvation of these two species. The analysis is coupled with a study of thermodynamics and kinetics of oxidation in the frame of Marcus theory. Our systematic investigation includes imidazolium, pyrrolydinium, and phosphonium families combined with anions of different size, polarity, and flexibility, opting to provide a clear and comprehensive picture of the impact of the nature of IL ions on the behavior of radical/cation redox pairs. The obtained results will help to explain experimentally observed effects and to rationalize the design of TEMPO/IL systems.
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Affiliation(s)
- Kateryna Goloviznina
- Sorbonne Université, CNRS, Physicochimie des Électrolytes et Nanosystèmes Interfaciaux, F-75005Paris, France.,Réseau sur le Stockage Electrochimique de l'Energie (RS2E), FR CNRS 3459, 80039Amiens Cedex, France
| | - Mathieu Salanne
- Sorbonne Université, CNRS, Physicochimie des Électrolytes et Nanosystèmes Interfaciaux, F-75005Paris, France.,Réseau sur le Stockage Electrochimique de l'Energie (RS2E), FR CNRS 3459, 80039Amiens Cedex, France.,Institut Universitaire de France (IUF), 75231Paris, France
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4
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Srinivasan P, Madhu DK, Pedugu Sivaraman S, Kuppusamy S, Nagarajan S, Rao CB, Kancharlapalli Chinaraga P, Mohan AM, Deivasigamani P. Chromoionophore decorated renewable solid-state polymer monolithic naked eye sensor for the selective sensing and recovery of ultra-trace toxic cadmium ions in aqueous environment. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2022.130377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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5
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Bian H, Xu F, Wei S, Zhang H, Zhang S, Duan Z, Zhu L, Xia D. A conversion strategy to disaggregate asphaltenes via mild hydrotreatment: Theoretical and experimental investigation. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2022.118106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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6
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Mladenova Kattnig BY, Kattnig DR, Grampp G. High-Pressure ESR Spectroscopy: On the Rotational Motion of Spin Probes in Pressurized Ionic Liquids. J Phys Chem B 2022; 126:906-911. [PMID: 35073090 PMCID: PMC9097484 DOI: 10.1021/acs.jpcb.1c09243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
We
report high-pressure (up to 50 MPa) ESR-spectroscopic investigations
on the rotational correlation times of the nitroxide radicals 2,2,6,6-tetramethylpiperidine
1-oxyl (TEMPO), 4-hydroxy-2,2,6,6-tetramethylpiperidine 1-oxyl (TEMPOL),
and 4-amino-2,2,6,6-tetramethylpiperidine 1-oxyl (ATEMPO) in the ionic
liquids 1-ethyl-3-methylimidazolium tetrafluoroborate (emimBF4), 1-butyl-3-methylimidazolium hexafluorophosphate (bmimPF6), 1-butyl-3-methylimidazolium tetrafluoroborate (bmimBF4), 1-methyl-3-octylimidazolium tetrafluoroborate (omimBF4), and 1-methyl-3-octylimidazolium hexafluorophosphate (omimPF6). The activation volumes (38.5–56.6 Å3) determined from pressure dependent rotational diffusion coefficients
agree well with the pressure dependent viscosities of the ionic liquids.
Experimentally, the fractional exponent of the generalized Stokes–Einstein–Debye
relation is found to be close to one.
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Affiliation(s)
| | - Daniel R. Kattnig
- Living Systems Institute, University of Exeter, Stocker Road, Exeter, EX4 4QD, U.K
| | - Guenter Grampp
- Institute of Physical and Theoretical Chemistry, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria
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Wen C, Shi Y, Lu Y, Xu Z, Liu H. 2Ch-2N Square Chalcogen Bonds between Pairs of Radicals: A Case Study of 1,2,3,5-Dichalcogenadiazolyl Derivatives. J Phys Chem A 2021; 125:8572-8580. [PMID: 34555901 DOI: 10.1021/acs.jpca.1c05439] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Specific 2Ch-2N square interactions between pairs of heterocyclic rings have been the target of many recent crystallographic and computational studies. According to our search of the Cambridge Structural Database (CSD), a number of crystal structures of the derivatives of 1,2,3,5-dichalcogenadiazolyl (DChDA) radicals, which consist of 2Ch-2N square motifs in the dimer units, were extracted. On the basis of the CSD survey results, a set of dimeric complexes of DChDA-based radicals with diverse aryl substituents at the 4-position were selected to model such squares. Similar to that in conventional chalcogen bonds, 2Ch-2N square interactions become stronger as the atomic size of chalcogens increases. Both the orbital term and electrostatics contribute significantly to the attraction of these interactions, while the dispersion contribution is small but unneglectable. Some five-membered aryl substituents, such as imidazole, thiazole, and oxazole, produce markedly enhanced square interactions, leading to a pronounced influence on the distribution of spin populations on DChDA rings.
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Affiliation(s)
- Congtao Wen
- State Key Laboratory of Chemical Engineering and School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Yulong Shi
- Drug Discovery and Design Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Yunxiang Lu
- State Key Laboratory of Chemical Engineering and School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Zhijian Xu
- Drug Discovery and Design Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Honglai Liu
- State Key Laboratory of Chemical Engineering and School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
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8
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Interfacial interactions and structures of imidazolium-based ionic liquids on black phosphorus surface from first-principles. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116562] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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9
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Gizatullin B, Mattea C, Stapf S. Molecular Dynamics in Ionic Liquid/Radical Systems. J Phys Chem B 2021; 125:4850-4862. [PMID: 33930266 DOI: 10.1021/acs.jpcb.1c02118] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Molecular dynamics of the ionic liquid 1-ethyl-3-methylimidazolium bis(trifluoromethyl sulfonyl)imide (Emim-Tf2N) with either of the four organic stable radicals, TEMPO, 4-benzoyloxy-TEMPO, BDPA, and DPPH, is studied by using Nuclear Magnetic Resonance (NMR) and Dynamic Nuclear Polarization (DNP). In complex fluids at ambient temperature, NMR signal enhancement by DNP is frequently obtained by a combination of several mechanisms, where the Overhauser effect and solid effect are the most common. Understanding the interactions of free radicals with ionic liquid molecules is of particular significance due to their complex dynamics in these systems, influencing the properties of the ion-radical interaction. A combined analysis of EPR, DNP, and NMR relaxation dispersion is carried out for cations and anions containing, respectively, the NMR active nuclei 1H or 19F. Depending on the size and the chemical properties of the radical, different interaction processes are distinguished, namely, the Overhauser effect and solid effect, driven by dominating dipolar or scalar interactions. The resulting NMR relaxation dispersion is decomposed into rotational and translational contributions, allowing the identification of the corresponding correlation times of motion and interactions. The influence of electron relaxation time and electron-nuclear spin hyperfine coupling is discussed.
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Affiliation(s)
- Bulat Gizatullin
- FG Technische Physik II/Polymerphysik, Technische Universität Ilmenau, D-98684 Ilmenau, Germany
| | - Carlos Mattea
- FG Technische Physik II/Polymerphysik, Technische Universität Ilmenau, D-98684 Ilmenau, Germany
| | - Siegfried Stapf
- FG Technische Physik II/Polymerphysik, Technische Universität Ilmenau, D-98684 Ilmenau, Germany
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10
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Ismail TM, Mohan N, Sajith PK. Theoretical study of hydrogen bonding interactions in substituted nitroxide radicals. NEW J CHEM 2021. [DOI: 10.1039/d0nj05362g] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Interaction energy (Eint) of hydrogen bonded complexes of nitroxide radicals can be assessed in terms of the deepest minimum of molecular electrostatic potential (Vmin).
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Affiliation(s)
| | - Neetha Mohan
- Department of Chemistry
- Christopher Ingold Building
- University College London (UCL)
- London WC1H 0AJ
- UK
| | - P. K. Sajith
- Department of Chemistry
- Farook College
- Kozhikode
- India
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11
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Wylie L, Seeger ZL, Hancock AN, Izgorodina EI. Increased stability of nitroxide radicals in ionic liquids: more than a viscosity effect. Phys Chem Chem Phys 2019; 21:2882-2888. [DOI: 10.1039/c8cp04854a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Experimental EPR and quantum chemical analyses show that ionic liquid solvents can stabilise radical through intermolecular interactions.
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Affiliation(s)
- Luke Wylie
- School of Chemistry
- Monash University
- Wellington Rd
- Clayton
- Australia
| | - Zoe L. Seeger
- School of Chemistry
- Monash University
- Wellington Rd
- Clayton
- Australia
| | - Amber N. Hancock
- Division of Natural Sciences & Mathematics
- Bennington College
- Bennington
- USA
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12
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Zhao C, Lu Y, Zhu Z, Liu H. Theoretical Exploration of Halogen Bonding Interactions in the Complexes of Novel Nitroxide Radical Probes and Comparison with Hydrogen Bonds. J Phys Chem A 2018; 122:5058-5068. [DOI: 10.1021/acs.jpca.8b03385] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Chengxi Zhao
- Key Laboratory for Advanced Materials and School of Chemistry & Molecular Engineering, Department of Chemistry, East China University of Science and Technology, Shanghai 200237, China
| | - Yunxiang Lu
- Key Laboratory for Advanced Materials and School of Chemistry & Molecular Engineering, Department of Chemistry, East China University of Science and Technology, Shanghai 200237, China
| | - Zhengdan Zhu
- CAS Key Laboratory of Receptor Research, Drug Discovery and Design Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Honglai Liu
- Key Laboratory for Advanced Materials and School of Chemistry & Molecular Engineering, Department of Chemistry, East China University of Science and Technology, Shanghai 200237, China
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13
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Liu Y, Yuan Y, Tian X, Yuan J, Sun J. Recognition of Melamine by Chromium Tricarbonyl (Thio)barbituric Acid Derivatives: Theoretical Insight into Multiple Hydrogen-Bond Modes. ChemistrySelect 2018. [DOI: 10.1002/slct.201702895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yidan Liu
- Key Laboratory for Ultrafine Materials of Ministry of Education and Shanghai Key Laboratory of Advanced Polymeric Materials; School of Materials Science and Engineering; East China University of Science and Technology; Meilong Road 130 Shanghai China 200237
| | - Yizhong Yuan
- Key Laboratory for Ultrafine Materials of Ministry of Education and Shanghai Key Laboratory of Advanced Polymeric Materials; School of Materials Science and Engineering; East China University of Science and Technology; Meilong Road 130 Shanghai China 200237
| | - Xiaohui Tian
- Key Laboratory for Ultrafine Materials of Ministry of Education and Shanghai Key Laboratory of Advanced Polymeric Materials; School of Materials Science and Engineering; East China University of Science and Technology; Meilong Road 130 Shanghai China 200237
| | - Jianyong Yuan
- Key Laboratory for Ultrafine Materials of Ministry of Education and Shanghai Key Laboratory of Advanced Polymeric Materials; School of Materials Science and Engineering; East China University of Science and Technology; Meilong Road 130 Shanghai China 200237
| | - Jinyu Sun
- Key Laboratory for Ultrafine Materials of Ministry of Education and Shanghai Key Laboratory of Advanced Polymeric Materials; School of Materials Science and Engineering; East China University of Science and Technology; Meilong Road 130 Shanghai China 200237
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14
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Quantum chemical analysis of electronic structure and bonding aspects of choline based ionic liquids. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2017.11.080] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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