Ion channels in sulfonated copolymer-grafted nanoparticles in ionic liquids

Li, Ruhao; Han, Yuke; Akcora, Pinar

doi:10.1039/d2sm00725h

Cited by 5 publications

(5 citation statements)

References 36 publications

(57 reference statements)

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“…62 Within this study, 2-cyano-2-propyl benzodithioate (CPDB) was chosen as RAFT agent due to its great ability to take part in the polymerization process of styrene as well as methyl methacrylate. [63][64][65][66] The monomer shares integrated into the polymer and the overall chain length are strongly inuenced by the activity of the RAFT-agent and each monomer. Furthermore, the optimization of the polymerization prior to measuring the properties is required to obtain the targeted ones.…”

Section: Resultsmentioning

confidence: 99%

Systematic copolymer screening for foaming experiments supported by computational methods

Endres,

Schuett,

Brütting

et al. 2023

J. Mater. Chem. A

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Section: Resultsmentioning

confidence: 99%

Systematic copolymer screening for foaming experiments supported by computational methods

Endres,

Schuett,

Brütting

et al. 2023

J. Mater. Chem. A

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“…VIm-TFSI was polymerized via the RAFT method with 4-cyano-4-(phenylcarbonothioylthio)-pentanoic acid (CPDB) as the chain transfer agent. Anchoring CPDB on 8 nm-diameter Fe 3 O 4 NPs was previously reported . Certain amounts of azobis(isobutyronitrile) (AIBN, initiator), CPDB, or CPDB-anchored NPs and monomeric VIm-TFSI were dissolved in DMF.…”

Section: Methodsmentioning

confidence: 99%

“…Anchoring CPDB on 8 nmdiameter Fe 3 O 4 NPs was previously reported. 40 Certain amounts of azobis(isobutyronitrile) (AIBN, initiator), CPDB, or CPDB-anchored NPs and monomeric VIm-TFSI were dissolved in DMF. The molar ratio of initiator to monomer n I /n M determines the chain length, and for PILgNPs, the molar ratio of initiator to chain transfer agent n I /n C determines the graft density (GD).…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

“…The enhanced ionic conduction was attributed to the connectivity of telechelic sulfonated groups. 40 Here, we present the impedance characteristics of the PILgNPs with different chain lengths at the same graft density and discuss ion transport mechanisms of the prepared systems in comparison to those of the free PIL homopolymer. The measured fast ion dynamics in PILgNPs is attributed to the confinement of counterions within the interstitial areas of particles and the polyion connection.…”

Section: ■ Introductionmentioning

confidence: 99%

“…In a previous work, the critical behavior of percolation was observed for poly(styrenesulfonate)-containing grafted NPs, manifested by an abrupt increase of ionic conductivity at the threshold concentration. The enhanced ionic conduction was attributed to the connectivity of telechelic sulfonated groups …”

Section: Introductionmentioning

confidence: 99%

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Enhanced Ion Conductivity in a Poly(ionic liquid)-Grafted Nanoparticle-Based Single-Ion Conductor

Li,

Bulucu,

Chou

et al. 2024

Macromolecules

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In contemporary batteries, solid polymer electrolytes are widely prioritized for their easy processability and safety; however, they suffer from limited ionic conductivity. Polymerized ionic liquids (PILs) counter this shortcoming by combining mechanical properties of polyions while allowing the counterions (anions) to maintain their free mobility. Poly(1-vinylimidazolium bistriflimide)-grafted iron oxide (Fe 3 O 4 ) nanoparticles with different chain lengths were synthesized to investigate the effect of grafting the PIL chains on the ionic conductivity. The long-range Coulombic interactions among PIL-grafted chains assist the formation of nanoparticle strings that percolate even at low particle concentrations. Within the percolated network, the connectivity of polycation grafts enabled effective ladder-like ion hopping of TFSI − anions and the cooperative ion motion in nanoparticle networks. The self-assembling nature of nanoparticles, when grafted with polymer electrolyte chains, increased ionic conductivity by promoting the facilitated transport of counterions. Upon incorporating ionic liquid to the PIL-grafted nanoparticles, the presence of ionic clustering was observed to decrease conductivity. Our results demonstrate that the graft chain confinement and particle percolation are essential factors for single-ion conductor design.

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An overview of the ionic liquids and their hybrids operating in electrochemical cells and capacitors

Pereira,

Souza,

Moreira

et al. 2024

Ionics

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The present work of review is focused on the recent advancements regarding the exploration of the ionic liquids, ionic liquids with the incorporation of nanoparticles of several materials, and ionic liquid-grafted nanoparticles operating as liquid electrodes in electrochemical cells and capacitors. The ionic liquids are generally synthesized at room temperature and by adding a solution, which can be an acid, a base, or a salt in water, and are composed of organic cations and a great number of charge-delocalized organic/inorganic anions. The electrochemical features such as the electrical conductivity and capacitance of the promising ionic liquids and their hybrids are addressed thoroughly, together with their influencing factors like the nature, concentration, and functionalization of the nanoparticles, type of base fluids, working temperature, and addition of surfactants. Moreover, this overview identifies and discusses the main applications of ionic liquids and their hybrids with nanoparticles in various possible electrochemical device configurations, along with a brief evaluation of the associated feasibility issues. Additionally, this survey of the published scientific papers on the subject enabled the listing and evaluation of the beneficial features related to the usage of these fluids including enhanced electrical conductivity and improved capacitance in comparison with the commonly employed solvents and electrolytes. Finally, it addresses the main problems associated with such types of fluids and outlines the primary prospects for further research and use of ionic liquids and their nanocomposites in different electrochemical technological applications.

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Ion channels in sulfonated copolymer-grafted nanoparticles in ionic liquids

Abstract: The use of ionic liquids as solvent for polymers or polymer-grafted nanoparticles provides an exciting feature to explore electrolyte-polymer interaction. 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (HMIm-TFSI) holds specific interactions with the polymer through...

Cited by 5 publications

References 36 publications

Systematic copolymer screening for foaming experiments supported by computational methods

Systematic copolymer screening for foaming experiments supported by computational methods

Enhanced Ion Conductivity in a Poly(ionic liquid)-Grafted Nanoparticle-Based Single-Ion Conductor

An overview of the ionic liquids and their hybrids operating in electrochemical cells and capacitors

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