Translational dynamics of ionic liquid imidazolium cations at solid/liquid interface in gel polymer electrolyte

Rachocki, Adam; Andrzejewska, Ewa; Dembna, Agata; Tritt‐Goc, Jadwiga

doi:10.1016/j.eurpolymj.2015.08.001

Cited by 31 publications

(48 citation statements)

References 55 publications

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“…For T 1 , there are many possible relaxation mechanism that can be considered; these can be classified as either inter- or intra-ion interactions 61 – 64 . Inter-ion interactions give information on the ions’ diffusion 61 , 62 , 64 , 65 , however, the diffusion coefficients of the cation and anion are known to be different in both of these ILs. Therefore, it is unlikely that diffusion and its effect on spin-lattice relaxation are the source of the unified T 1 values.…”

Section: Resultsmentioning

confidence: 99%

NMR and Rheological Study of Anion Size Influence on the Properties of Two Imidazolium-based Ionic Liquids

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Ries

Moffat

et al. 2017

Sci Rep

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NMR self-diffusion and relaxation, coupled with viscosity, were used to study the properties and structure of two imidazolium-based ionic liquids, 1-ethyl-3-methylimidazolium acetate [C2MIM][OAc] and 1-ethyl-3-methylimidazolium octanoate [C2MIM][OOct]. The experimental results point to the formation of different types of aggregates in each ionic liquid. These aggregates are small and stable under flow and temperature in [C2MIM][OAc], whereas the aggregates are large and sensitive to flow and temperature in [C2MIM][OOct]. In the latter case the size of aggregates decreases both under flow and temperature increase.

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Section: Resultsmentioning

confidence: 99%

NMR and Rheological Study of Anion Size Influence on the Properties of Two Imidazolium-based Ionic Liquids

Green

Ries

Moffat

et al. 2017

Sci Rep

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“…It is also worth mentioning that a model referred to as “rotation-mediated translation diffusion” (RMTD) has been used for interpreting relaxation NMR relaxation data for confined ionic liquids [ 45 , 46 ]. The model assumes that translational diffusion along rough surfaces leads to rotation—in fact, a reorientation of the dipole–dipole axes being a result of a chain of acts of absorption to a rough surface.…”

Section: Discussionmentioning

confidence: 99%

Dynamics of Ionic Liquids in Confinement by Means of NMR Relaxometry—EMIM-FSI in a Silica Matrix as an Example

et al. 2020

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1H and 19F spin–lattice relaxation studies for 1-ethyl-3-methylimidazolium bis(fluorosulfonyl)imide in bulk and mesoporous MCM-41 silica matrix confinement were performed under varying temperatures in a broad range of magnetic fields, corresponding to 1H resonance frequency from 5Hz to 30MHz.A thorough analysis of the relaxation data revealed a three-dimensional translation diffusion of the ions in the bulk liquid and two-dimensional diffusion in the vicinity of the confining walls in the confinement. Parameters describing the translation dynamics were determined and compared. The rotational motion of both kinds of ions in the confinement was described by two correlation times that might be attributed to anisotropic reorientation of these species.

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“…The phenomenon of higher ionic conductivity of solid polymer electrolytes than base ILs was observed also in two‐component polymer–IL materials . The matrices were based on diacrylates of ethoxylated bisphenol A (VIb) and bisphenol F; the ILs were imidazolium‐derived (EMIm + and BMIm + ) salts with BF 4 − , ATf − , OTf − and NTf 2 − anions.…”

Section: Applicationsmentioning

confidence: 90%

“…GPEs with stronger phase separation exhibit higher ionic conductivity and higher specific capacity . The occurrence of phase separation seems to be necessary to render pathways continuous for ion transport . Attempts to explain this phenomenon were undertaken applying the nuclear magnetic resonance relaxometry method and appropriate theoretical models .…”

Section: Applicationsmentioning

confidence: 99%

“…The occurrence of phase separation seems to be necessary to render pathways continuous for ion transport . Attempts to explain this phenomenon were undertaken applying the nuclear magnetic resonance relaxometry method and appropriate theoretical models . It was shown that the self‐diffusion of cations migrating at the solid–liquid interface is characterized by diffusion constants that are about twice as high as in pure IL and/or inside pools of IL in the polymer matrix.…”

Section: Applicationsmentioning

confidence: 99%

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Photoinitiated polymerization in ionic liquids and its application

Andrzejewska

2016

Polymer International

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Ionic liquids (ILs) are low-melting organic salts often liquid at room temperature, whose unique properties are the reason of increasing interest for their applications as solvents, reaction media and functional additives. The exceptional properties of ILs have proved to be particularly useful in polymer science giving the potential to produce polymeric materials with improved properties or to immobilize ILs in polymer matrices while keeping their special characteristics. One of the possibilities is polymerization in ILs which can also affect positively polymerization reactions. An especially attractive technique is photopolymerization due to the ease of process control, short reaction time and ambient working temperature. This review gives a literature survey of developments in photopolymerization processes carried out in ILs as well as applications of these processes. It covers both the photopolymerization in ILs as well as photopolymerization of IL monomers. The first part presents a short overview of physicochemical and photochemical properties of ILs; it includes also photochemical reactions and photoinitiation of polymerization in ILs. The second part covers both the basic research (kinetics of photopolymerization including polymerization rate coefficients and polymerization of IL monomers) as well as applications of UV-induced polymerization in ILs.

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Translational dynamics of ionic liquid imidazolium cations at solid/liquid interface in gel polymer electrolyte

Cited by 31 publications

References 55 publications

NMR and Rheological Study of Anion Size Influence on the Properties of Two Imidazolium-based Ionic Liquids

NMR and Rheological Study of Anion Size Influence on the Properties of Two Imidazolium-based Ionic Liquids

Dynamics of Ionic Liquids in Confinement by Means of NMR Relaxometry—EMIM-FSI in a Silica Matrix as an Example

Photoinitiated polymerization in ionic liquids and its application

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