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Khan MS, Van Roekeghem A, Mossa S, Ivol F, Bernard L, Picard L, Mingo N. Modelling structure and ionic diffusion in a class of ionic liquid crystal-based solid electrolytes. Phys Chem Chem Phys 2024; 26:4338-4348. [PMID: 38234270 DOI: 10.1039/d3cp05048c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2024]
Abstract
Next-generation high-efficiency Li-ion batteries require an electrolyte that is both safe and thermally stable. A possible choice for high performance all-solid-state Li-ion batteries is a liquid crystal, which possesses properties in-between crystalline solids and isotropic liquids. By employing molecular dynamics simulations together with various experimental techniques, we have designed and analyzed a novel liquid crystal electrolyte composed of rigid naphthalene-based moieties as mesogenic units, grafted to flexible alkyl chains of different lengths. We have synthesized novel highly ordered lamellar phase liquid crystal electrolytes at 99% purity and have evaluated the effect of alkyl chain length variation on ionic conduction. We find that the conductivity of the liquid crystal electrolytes is directly dependent on the extent of the nanochannels formed by molecule self-organization, which itself depends non-monotonously on the size of the alkyl chains. In addition, we show that the ion pair interaction between the anionic center of the liquid crystal molecules and the Li+ ions plays a crucial role in the overall conductivity. Based on our results, we suggest that further improvement of the ionic conductivity performance is possible, making this novel family of liquid crystal electrolytes a promising option for the design of entirely solid-state Li+ ion batteries.
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Affiliation(s)
- Md Sharif Khan
- Université Grenoble Alpes, CEA, LITEN, 17 rue des Martyrs, 38054 Grenoble Cedex 9, France.
| | - Ambroise Van Roekeghem
- Université Grenoble Alpes, CEA, LITEN, 17 rue des Martyrs, 38054 Grenoble Cedex 9, France.
| | - Stefano Mossa
- Université Grenoble Alpes, CEA, IRIG-MEM, 17 rue des Martyrs, 38054 Grenoble Cedex 9, France
| | - Flavien Ivol
- Université Grenoble Alpes, CEA, LITEN, 17 rue des Martyrs, 38054 Grenoble Cedex 9, France.
| | - Laurent Bernard
- Université Grenoble Alpes, CEA, LITEN, 17 rue des Martyrs, 38054 Grenoble Cedex 9, France.
| | - Lionel Picard
- Université Grenoble Alpes, CEA, LITEN, 17 rue des Martyrs, 38054 Grenoble Cedex 9, France.
| | - Natalio Mingo
- Université Grenoble Alpes, CEA, LITEN, 17 rue des Martyrs, 38054 Grenoble Cedex 9, France.
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2
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Su L, Lu F, Li Y, Li X, Chen L, Gao Y, Zheng L, Gao X. Microstructural Evolution of Zinc-Ion Species from Aqueous to Hydrated Eutectic Electrolyte for Zn-Ion Batteries. CHEMSUSCHEM 2023; 16:e202300285. [PMID: 37010877 DOI: 10.1002/cssc.202300285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 04/03/2023] [Accepted: 04/03/2023] [Indexed: 06/10/2023]
Abstract
Despite their intrinsic safety and environmental friendliness, typical aqueous Zn-ion rechargeable batteries have been struggling with poor reversibility and electrochemical stability. Hydrated eutectic electrolytes (HEEs) have been attracting extensive attention due to their appealing features of high designability and superior performances over typical aqueous electrolytes. However, an in-depth understanding of unique microstructure in HEEs and the ensuing superior performances remains obscure, limiting the development of enhanced electrolytes. Herein, we demonstrate a distinct evolution path of Zn-ion species from aqueous to superior hydrated eutectic electrolytes, which experience a special transition state enriched with H-bonds between eutectic molecules. Complementary with the well-studied reorganized solvation structure induced by short-ranged salt-solvent interaction, long-range solvent-solvent interactions arising from the H-bond reorganizes the extended electrolyte microstructure, which in turn influences the cation diffusion mechanisms and interfacial reaction kinetics. Overall, we highlight the importance of ion species microstructural evolution in the rational design of superior aqueous electrolytes.
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Affiliation(s)
- Long Su
- Key Laboratory of Colloid and Interface Chemistry, Shandong University, Jinan, 250100, P. R. China
| | - Fei Lu
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, School of Chemical Engineering and Technology, Hainan University, Haikou, 570228, P. R. China
| | - Yanrui Li
- Key Laboratory of Colloid and Interface Chemistry, Shandong University, Jinan, 250100, P. R. China
| | - Xia Li
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, School of Chemical Engineering and Technology, Hainan University, Haikou, 570228, P. R. China
| | - Liangdan Chen
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, School of Chemical Engineering and Technology, Hainan University, Haikou, 570228, P. R. China
| | - Yanan Gao
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, School of Chemical Engineering and Technology, Hainan University, Haikou, 570228, P. R. China
| | - Liqiang Zheng
- Key Laboratory of Colloid and Interface Chemistry, Shandong University, Jinan, 250100, P. R. China
| | - Xinpei Gao
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, School of Chemical Engineering and Technology, Hainan University, Haikou, 570228, P. R. China
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3
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Rauber D, Philippi F, Becker J, Zapp J, Morgenstern B, Kuttich B, Kraus T, Hempelmann R, Hunt P, Welton T, Kay CWM. Anion and ether group influence in protic guanidinium ionic liquids. Phys Chem Chem Phys 2023; 25:6436-6453. [PMID: 36779955 DOI: 10.1039/d2cp05724g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Ionic liquids are attractive liquid materials for many advanced applications. For targeted design, in-depth knowledge about their structure-property-relations is urgently needed. We prepared a set of novel protic ionic liquids (PILs) with a guanidinium cation with either an ether or alkyl side chain and different anions. While being a promising cation class, the available data is insufficient to guide design. We measured thermal and transport properties, nuclear magnetic resonance (NMR) spectra as well as liquid and crystalline structures supported by ab initio computations and were able to obtain a detailed insight into the influence of the anion and the ether substitution on the physical and spectroscopic properties. For the PILs, hydrogen bonding is the main interaction between cation and anion and the H-bond strength is inversely related to the proton affinity of the constituting acid and correlated to the increase of 1H and 15N chemical shifts. Using anions from acids with lower proton affinity leads to proton localization on the cation as evident from NMR spectra and self-diffusion coefficients. In contrast, proton exchange was evident in ionic liquids with triflate and trifluoroacetate anions. Using imide-type anions and ether side groups decreases glass transitions as well as fragility, and accelerated dynamics significantly. In case of the ether guanidinium ionic liquids, the conformation of the side chain adopts a curled structure as the result of dispersion interactions, while the alkyl chains prefer a linear arrangement.
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Affiliation(s)
- Daniel Rauber
- Department of Chemistry, Saarland University, Campus B 2.2, 66123 Saarbrücken, Germany.
| | - Frederik Philippi
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, White City Campus, London W12 0BZ, UK
| | - Julian Becker
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, White City Campus, London W12 0BZ, UK
| | - Josef Zapp
- Pharmaceutical Biology, Saarland University, Campus B 2.3, 66123 Saarbrücken, Germany
| | - Bernd Morgenstern
- Department of Chemistry, Saarland University, Campus B 2.2, 66123 Saarbrücken, Germany.
| | - Björn Kuttich
- INM-Leibniz Institute for New Materials, Campus D2.2, 66123 Saarbrücken, Germany
| | - Tobias Kraus
- Department of Chemistry, Saarland University, Campus B 2.2, 66123 Saarbrücken, Germany. .,INM-Leibniz Institute for New Materials, Campus D2.2, 66123 Saarbrücken, Germany
| | - Rolf Hempelmann
- Department of Chemistry, Saarland University, Campus B 2.2, 66123 Saarbrücken, Germany.
| | - Patricia Hunt
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, White City Campus, London W12 0BZ, UK.,School of Chemical and Physical Sciences, Victoria University of Wellington, New Zealand
| | - Tom Welton
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, White City Campus, London W12 0BZ, UK
| | - Christopher W M Kay
- Department of Chemistry, Saarland University, Campus B 2.2, 66123 Saarbrücken, Germany. .,London Centre for Nanotechnology, University College London, 17-19 Gordon Street, London WC1H 0AH, UK.
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4
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de Araujo Lima E Souza G, Di Pietro ME, Castiglione F, Marques Mezencio PH, Fazzio Martins Martinez P, Mariani A, Schütz HM, Passerini S, Middendorf M, Schönhoff M, Triolo A, Appetecchi GB, Mele A. Implications of Anion Structure on Physicochemical Properties of DBU-Based Protic Ionic Liquids. J Phys Chem B 2022; 126:7006-7014. [PMID: 36039977 PMCID: PMC9483912 DOI: 10.1021/acs.jpcb.2c02789] [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
![]()
Protic ionic liquids (PILs) are potential candidates
as electrolyte
components in energy storage devices. When replacing flammable and
volatile organic solvents, PILs are expected to improve the safety
and performance of electrochemical devices. Considering their technical
application, a challenging task is the understanding of the key factors
governing their intermolecular interactions and physicochemical properties.
The present work intends to investigate the effects of the structural
features on the properties of a promising PIL based on the 1,8-diazabicyclo[5.4.0]undec-7-ene
(DBUH+) cation and the (trifluoromethanesulfonyl)(nonafluorobutanesulfonyl)imide
(IM14–) anion, the latter being a remarkably large
anion with an uneven distribution of the C–F pool between the
two sides of the sulfonylimide moieties. For comparison purposes,
the experimental investigations were extended to PILs composed of
the same DBU-based cation and the trifluoromethanesulfonate
(TFO–) or bis(trifluoromethanesulfonyl)imide
(TFSI–) anion. The combined use of multiple NMR
methods, thermal analyses, density, viscosity, and conductivity measurements
provides a deep characterization of the PILs, unveiling peculiar behaviors
in DBUH-IM14, which cannot be predicted solely on the basis of differences
between aqueous pKa values of the protonated
base and the acid (ΔpKa). Interestingly,
the thermal and electrochemical properties of DBUH-IM14 turn out to
be markedly governed by the size and asymmetric nature of the anion.
This observation highlights that the structural features of the precursors
are an important tool to tailor the PIL’s properties according
to the specific application.
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Affiliation(s)
- Giselle de Araujo Lima E Souza
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milan, Italy
| | - Maria Enrica Di Pietro
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milan, Italy
| | - Franca Castiglione
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milan, Italy
| | | | | | - Alessandro Mariani
- Università Politecnica Delle Marche, Piazza Roma, 22, 60121 Ancona, Italy.,Helmholtz Institute Ulm (HIU), Helmholtzstraße 11, D-89081 Ulm, Germany.,Karlsruhe Institute of Technology (KIT), P.O. Box 3640, D-76021 Karlsruhe, Germany
| | - Hanno Maria Schütz
- Helmholtz Institute Ulm (HIU), Helmholtzstraße 11, D-89081 Ulm, Germany.,Karlsruhe Institute of Technology (KIT), P.O. Box 3640, D-76021 Karlsruhe, Germany
| | - Stefano Passerini
- Helmholtz Institute Ulm (HIU), Helmholtzstraße 11, D-89081 Ulm, Germany.,Karlsruhe Institute of Technology (KIT), P.O. Box 3640, D-76021 Karlsruhe, Germany
| | - Maleen Middendorf
- Institute of Physical Chemistry, University of Muenster, Corrensstrasse 28-30, 48149 Münster, Germany
| | - Monika Schönhoff
- Institute of Physical Chemistry, University of Muenster, Corrensstrasse 28-30, 48149 Münster, Germany
| | - Alessandro Triolo
- Istituto Struttura della Materia (ISM), Consiglio Nazionale delle Ricerche (CNR), via Fosso del Cavaliere 100, 00133 Rome, Italy
| | - Giovanni Battista Appetecchi
- ENEA (Italian National Agency for New Technologies, Energy and Sustainable Economic Development), Department for Sustainability (SSPT), Casaccia Research Center, Via Anguillarese 301, 00123 Rome, Italy
| | - Andrea Mele
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milan, Italy
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5
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Cashen RK, Donoghue MM, Schmeiser AJ, Gebbie MA. Bridging Database and Experimental Analysis to Reveal Super-hydrodynamic Conductivity Scaling Regimes in Ionic Liquids. J Phys Chem B 2022; 126:6039-6051. [PMID: 35939324 DOI: 10.1021/acs.jpcb.2c01635] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Ion transport through electrolytes critically impacts the performance of batteries and other devices. Many frameworks used to model ion transport assume hydrodynamic mechanisms and focus on maximizing conductivity by minimizing viscosity. However, solid-state electrolytes illustrate that non-hydrodynamic ion transport can define device performance. Increasingly, selective transport mechanisms, such as hopping, are proposed for concentrated electrolytes. However, viscosity-conductivity scaling relationships in ionic liquids are often analyzed with hydrodynamic models. We report data-centric analyses of hydrodynamic transport models of viscosity-conductivity scaling in ionic liquids by merging three databases to bridge physical properties and computational descriptors. With this expansive database, we constrained scaling analyses using ion sizes defined from simulated volumes, as opposed to estimating sizes from activity coefficients. Remarkably, we find that many ionic liquids exhibit positive deviations from the Nernst-Einstein model, implying ions move faster than hydrodynamics should allow. We verify these findings using microrheology and conductivity experiments. We further show that machine learning tools can improve predictions of conductivity from molecular properties, including predictions from solely computational features. Our findings reveal that many ionic liquids exhibit super-hydrodynamic viscosity-conductivity scaling, suggesting mechanisms of correlated ion motion, which could be harnessed to enhance electrochemical device performance.
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Affiliation(s)
- Ryan K Cashen
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Megan M Donoghue
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Abigail J Schmeiser
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Matthew A Gebbie
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
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6
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Single-Stage Extraction and Separation of Co2+ from Ni2+ Using Ionic Liquid of [C4H9NH3][Cyanex 272]. Molecules 2022; 27:molecules27154806. [PMID: 35956755 PMCID: PMC9369997 DOI: 10.3390/molecules27154806] [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] [Received: 06/29/2022] [Revised: 07/20/2022] [Accepted: 07/25/2022] [Indexed: 11/17/2022] Open
Abstract
The purpose of this study was to optimize the extraction conditions for separating Co2+ from Ni2+ using N-butylamine phosphinate ionic liquid of [C4H9NH3][Cyanex 272]. A Box–Behnken design of response surface methodology was used to analyze the effects of the initial pH, extraction time, and extraction temperature on the separation factor of Co2+ from sulfuric acid solution containing Ni2+. The concentrations of Co2+ and Ni2+ in an aqueous solution were determined using inductively coupled plasma-optical emission spectrometry. The optimized extraction conditions were as follows: an initial pH of 3.7, an extraction time of 55.8 min, and an extraction temperature of 330.4 K. The separation factor of Co2+ from Ni2+ under optimized extraction conditions was 66.1, which was very close to the predicted value of 67.2, and the error was 1.7%. The equation for single-stage extraction with high reliability can be used for optimizing the multi-stage extraction process of Co2+ from Ni2+. The stoichiometry of chemical reaction for ion-exchange extraction was also investigated using the slope method.
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7
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Kang C, Hutt O, Pringle JM. Halide-free Synthesis of New Difluoro(oxalate)borate [DFOB]--based Ionic Liquids and Organic Ionic Plastic Crystals. Chemphyschem 2022; 23:e202200115. [PMID: 35451216 PMCID: PMC9401595 DOI: 10.1002/cphc.202200115] [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: 02/21/2022] [Revised: 03/31/2022] [Indexed: 11/29/2022]
Abstract
The implementation of next‐generation batteries requires the development of safe, compatible electrolytes that are stable and do not cause safety problems. The difluoro(oxalato)borate ([DFOB]−) anion has been used as an electrolyte additive to aid with stability, but such an approach has most commonly been carried out using flammable solvent electrolytes. As an alternative approach, utilisation of the [DFOB]− anion to make ionic liquids (ILs) or Organic Ionic Plastic Crystals (OIPCs) allows the advantageous properties of ILs or OIPCs, such as higher thermal stability and non‐volatility, combined with the benefits of the [DFOB]− anion. Here, we report the synthesis of new [DFOB]−‐based ILs paired with triethylmethylphosphonium [P1222]+, and diethylisobutylmethylphosphonium [P122i4]+. We also report the first OIPCs containing the [DFOB]− anion, formed by combination with the 1‐ethyl‐1‐methylpyrrolidinium [C2mpyr]+ cation, and the triethylmethylammonium [N1222]+ cation. The traditional synthetic route using halide starting materials has been successfully replaced by a halide‐free tosylate‐based synthetic route that is advantageous for a purer, halide free product. The synthesised [DFOB]−‐based salts exhibit good thermal stability, while the ILs display relatively high ionic conductivity. Thus, the new [DFOB]−‐based electrolytes show promise for further investigation as battery electrolytes both in liquid and solid‐state form.
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Affiliation(s)
- Colin Kang
- Deakin University, Institute for Frontier Materials, AUSTRALIA
| | - Oliver Hutt
- Boron Molecular, N/A, 500 Princes Hwy,, Noble Park, AUSTRALIA
| | - Jennifer M Pringle
- Deakin University, Institute for Frontier Materials, Burwood Highway, 3125, Burwood, AUSTRALIA
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8
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Damodaran K. Recent advances in NMR spectroscopy of ionic liquids. PROGRESS IN NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY 2022; 129:1-27. [PMID: 35292132 DOI: 10.1016/j.pnmrs.2021.12.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 12/17/2021] [Accepted: 12/28/2021] [Indexed: 06/14/2023]
Abstract
This review presents recent developments in the application of NMR spectroscopic techniques in the study of ionic liquids. NMR has been the primary tool not only for the structural characterization of ionic liquids, but also for the study of dynamics. The presence of a host of NMR active nuclei in ionic liquids permits widespread use of multinuclear NMR experiments. Chemical shifts and multinuclear coupling constants are used routinely for the structure elucidation of ionic liquids and of products formed by their covalent interactions with other materials. Also, the availability of a multitude of NMR techniques has facilitated the study of dynamical processes in them. These include the use of NOESY to study inter-ionic interactions, pulsed-field gradient techniques for probing transport properties, and relaxation measurements to elucidate rotational dynamics. This review will focus on the application of each of these techniques to investigate ionic liquids.
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Affiliation(s)
- Krishnan Damodaran
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, United States.
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9
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Gontrani L, Tagliatesta P, Donia DT, Bauer EM, Bonomo M, Carbone M. Recent Advances in the Synthesis of Inorganic Materials Using Environmentally Friendly Media. Molecules 2022; 27:2045. [PMID: 35408444 PMCID: PMC9000861 DOI: 10.3390/molecules27072045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 03/15/2022] [Accepted: 03/18/2022] [Indexed: 12/28/2022] Open
Abstract
Deep Eutectic Solvents have gained a lot of attention in the last few years because of their vast applicability in a large number of technological processes, the simplicity of their preparation and their high biocompatibility and harmlessness. One of the fields where DES prove to be particularly valuable is the synthesis and modification of inorganic materials-in particular, nanoparticles. In this field, the inherent structural inhomogeneity of DES results in a marked templating effect, which has led to an increasing number of studies focusing on exploiting these new reaction media to prepare nanomaterials. This review aims to provide a summary of the numerous and most recent achievements made in this area, reporting several examples of the newest mixtures obtained by mixing molecules originating from natural feedstocks, as well as linking them to the more consolidated methods that use "classical" DES, such as reline.
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Affiliation(s)
- Lorenzo Gontrani
- Department of Chemical Science and Technologies, University of Rome Tor Vergata, Via della Ricerca Scientifica 1, 00133 Rome, Italy;
- Department of Chemistry, University of Rome “La Sapienza”, P.le A. Moro 5, 00185 Roma, Italy
| | - Pietro Tagliatesta
- Department of Chemical Science and Technologies, University of Rome Tor Vergata, Via della Ricerca Scientifica 1, 00133 Rome, Italy;
| | - Domenica Tommasa Donia
- Department of Surgical Science, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, Italy;
| | - Elvira Maria Bauer
- Italian National Research Council-Institute of Structure of Matter (CNR-ISM), Via Salaria km 29.3, 00015 Monterotondo, Italy;
| | - Matteo Bonomo
- Department of Chemistry, University of Rome “La Sapienza”, P.le A. Moro 5, 00185 Roma, Italy
- Department of Chemistry, NIS Interdepartmental Centre and INSTM Reference Centre, University of Turin, Via Pietro Giuria 7, 10125 Turin, Italy;
| | - Marilena Carbone
- Department of Chemical Science and Technologies, University of Rome Tor Vergata, Via della Ricerca Scientifica 1, 00133 Rome, Italy;
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10
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Le Donne A, Russo S, Bodo E. Assessing the propensity toward ionization in nanosized clusters of protic ionic liquids by Ab-initio methods. Chem Phys 2022. [DOI: 10.1016/j.chemphys.2021.111365] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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11
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Miranda-Quintana RA, Smiatek J. Specific Ion Effects in Different Media: Current Status and Future Challenges. J Phys Chem B 2021; 125:13840-13849. [PMID: 34918938 DOI: 10.1021/acs.jpcb.1c07957] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We discuss the current state of research as well as the future challenges for a deeper understanding of specific ion effects in protic and aprotic solvents as well as various additional media. Despite recent interest in solute or interfacial effects, we focus exclusively on the specific properties of ions in bulk electrolyte solutions. Corresponding results show that many mechanisms remain unknown for these simple media, although theoretical, computational, and experimental studies have provided some insights into explaining individual observations. In particular, the importance of local interactions and electronic properties is emphasized, which enabled a more consistent interpretation of specific ion effects over the past years. Despite current insufficient knowledge, we also discuss future challenges in relation to dynamic properties as well as the influence of different concentrations, different solvents, and solute contributions to gain a deeper understanding of specific ion effects for technological applications.
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Affiliation(s)
- Ramón Alain Miranda-Quintana
- Department of Chemistry and Quantum Theory Project, University of Florida, Gainesville, Florida 32611, United States
| | - Jens Smiatek
- Institute for Computational Physics, University of Stuttgart, D-70569 Stuttgart, Germany.,Digitalization Development Biologicals CMC, Boehringer Ingelheim Pharma GmbH & Co. KG, D-88397 Biberach (Riss), Germany
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12
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Carreira ARF, Veloso T, Schaeffer N, Pereira JL, Ventura SPM, Rizzi C, Sirieix Plénet J, Passos H, Coutinho JAP. Synthesis of Purine-Based Ionic Liquids and Their Applications. Molecules 2021; 26:6958. [PMID: 34834050 PMCID: PMC8620494 DOI: 10.3390/molecules26226958] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 11/15/2021] [Accepted: 11/15/2021] [Indexed: 11/18/2022] Open
Abstract
Bio-based ionic liquids (ILs) are being increasingly sought after, as they are more sustainable and eco-friendly. Purines are the most widely distributed, naturally occurring N-heterocycles, but their low water-solubility limits their application. In this work, four purines (theobromine, theophylline, xanthine, and uric acid) were combined with the cation tetrabutylammonium to synthesize bio-based ILs. The physico-chemical properties of the purine-based ILs were characterized, including their melting and decomposition temperatures and water-solubility. The ecotoxicity against the microalgae Raphidocelis subcapitata was also determined. The ILs show good thermal stability (>457 K) and an aqueous solubility enhancement ranging from 53- to 870-fold, in comparison to their respective purine percursors, unlocking new prospects for their application where aqueous solutions are demanded. The ecotoxicity of these ILs seems to be dominated by the cation, and it is similar to chloride-based IL, emphasizing that the use of natural anions does not necessarily translate to more benign ILs. The application of the novel ILs in the formation of aqueous biphasic systems (ABS), and as solubility enhancers, was also evaluated. The ILs were able to form ABS with sodium sulfate and tripotassium citrate salts. The development of thermoresponsive ABS, using sodium sulfate as a salting-out agent, was accomplished, with the ILs having different thermosensitivities. In addition, the purine-based ILs acted as solubility enhancers of ferulic acid in aqueous solution.
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Affiliation(s)
- Ana R. F. Carreira
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal; (A.R.F.C.); (T.V.); (N.S.); (S.P.M.V.); (J.A.P.C.)
| | - Telma Veloso
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal; (A.R.F.C.); (T.V.); (N.S.); (S.P.M.V.); (J.A.P.C.)
- Department of Biology & CESAM, University of Aveiro, 3810-193 Aveiro, Portugal;
| | - Nicolas Schaeffer
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal; (A.R.F.C.); (T.V.); (N.S.); (S.P.M.V.); (J.A.P.C.)
| | - Joana L. Pereira
- Department of Biology & CESAM, University of Aveiro, 3810-193 Aveiro, Portugal;
| | - Sónia P. M. Ventura
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal; (A.R.F.C.); (T.V.); (N.S.); (S.P.M.V.); (J.A.P.C.)
| | - Cécile Rizzi
- Laboratoire Physico-Chimie des Électrolytes et Nano-Systèmes Interfaciaux, PHENIX, CNRS, Sorbonne Université, F-75005 Paris, France; (C.R.); (J.S.P.)
| | - Juliette Sirieix Plénet
- Laboratoire Physico-Chimie des Électrolytes et Nano-Systèmes Interfaciaux, PHENIX, CNRS, Sorbonne Université, F-75005 Paris, France; (C.R.); (J.S.P.)
| | - Helena Passos
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal; (A.R.F.C.); (T.V.); (N.S.); (S.P.M.V.); (J.A.P.C.)
| | - João A. P. Coutinho
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal; (A.R.F.C.); (T.V.); (N.S.); (S.P.M.V.); (J.A.P.C.)
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Antenucci A, Bonomo M, Ghigo G, Gontrani L, Barolo C, Dughera S. How do arenediazonium salts behave in deep eutectic solvents? A combined experimental and computational approach. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116743] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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14
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Zhang J, Yao J, Li H. Phase and Chemical Equilibria of Biphasic Protic Ionic Liquid: Triethylamine–Acetic Acid. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c02077] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jiao Zhang
- Department of Chemistry, ZJU-NHU United R&D Center, Zhejiang University, Hangzhou 310027, P. R. China
| | - Jia Yao
- Department of Chemistry, ZJU-NHU United R&D Center, Zhejiang University, Hangzhou 310027, P. R. China
| | - Haoran Li
- Department of Chemistry, ZJU-NHU United R&D Center, Zhejiang University, Hangzhou 310027, P. R. China
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, P. R. China
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15
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Lynam JG, Zugger HT, Amedee ET. Ionic Liquids Separating Rubber Latex from Guayule. MATERIALS 2021; 14:ma14154255. [PMID: 34361449 PMCID: PMC8348007 DOI: 10.3390/ma14154255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 07/27/2021] [Accepted: 07/28/2021] [Indexed: 11/30/2022]
Abstract
Danger to rubber trees (Hevea brasiliensis) from South American leaf blight fungus imperils the world’s source of natural latex for essential rubber products. Avoiding latex allergies also requires a non-Hevea latex source. The present methods for removing latex entrapped in the individual cells of guayule plants require environmentally hazardous chemicals. This study proposes a new method for latex extraction from guayule using various ionic liquids (ILs) to dissolve cell walls and release latex, as substantiated by Fourier transform infrared spectroscopy (FTIR) data.
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16
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Bodo E, Bonomo M, Mariani A. Assessing the Structure of Protic Ionic Liquids Based on Triethylammonium and Organic Acid Anions. J Phys Chem B 2021; 125:2781-2792. [PMID: 33719447 PMCID: PMC8041315 DOI: 10.1021/acs.jpcb.1c00249] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
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We present a computational
analysis of the short-range structure
of three protic ionic liquids based on strong organic acids: trifluoracetate,
methanesulfonate, and triflate of triethylammonium. Accurate ab initio computations carried out on the gas-phase dimers
show that the protonation of triethylamine is spontaneous. We have
identified the anion-cation binding motif that is due to the presence
of a strong hydrogen bond and to electrostatic interactions. The strength
of the hydrogen bond and the magnitude of the binding energy decrease
in the order trifluoroacetate ≳ methanesulfonate > triflate.
The corresponding simulations of the bulk phases, obtained using a
semiempirical evaluation of the interatomic forces, reveal that on
short timescales, the state of the three liquids remains highly ionized
and that the gas-phase cation-/anion-binding motif is preserved while
no other peculiar structural features seem to emerge.
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Affiliation(s)
- Enrico Bodo
- Chemistry Department, University of Rome "La Sapienza", Piazzale A. Moro 5, 00185 Rome, Italy
| | - Matteo Bonomo
- Chemistry Department, University of Rome "La Sapienza", Piazzale A. Moro 5, 00185 Rome, Italy.,Department of Chemistry, NIS Interdepartmental Centre, INSTM Reference Centre, University of Turin, Via Gioacchino Quarello 15/A, 10125 Turin, Italy
| | - Alessandro Mariani
- Chemistry Department, University of Rome "La Sapienza", Piazzale A. Moro 5, 00185 Rome, Italy.,Helmholtz Institute Ulm (HIU), Helmholtzstrasse 11, Ulm 89081, Germany.,Karlsruhe Institute of Technology (KIT), P.O. Box 3640, Karlsruhe 76021, Germany
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