Ionic Liquids and Polymeric Ionic Liquids as Stimuli-Responsive Functional Materials

Texter, John

doi:10.1007/978-3-662-44903-5_5

Cited by 7 publications

(3 citation statements)

References 171 publications

(207 reference statements)

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“…Our stabilizers are based upon the ionic liquid acrylate surfactant, 1-(11-acryloyloxyundecyl)-3-methyl-imidazolium bromide (ILBr). , This monomer has been used to develop several stimuli-responsive materials, wherein the stimuli responsiveness emanates from the solubility variations exhibited by imidazolium anion ion-pairs when undergoing anion exchange or solvent exchange. , In previous work on dispersing SWCNT, MWCNT, and hydrothermal carbon in water, we found that the monomer ILBr as itself (as a surfactant), in a homopolymer, in linear copolymers, in triblock copolymers, and in nanolatexes provides active stabilization of graphenic surfaces by adsorbing onto such surfaces through π–π overlap and by providing a water-loving functional group, hygroscopic imidazolium bromide. − …”

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confidence: 99%

Aqueous Graphene Dispersions–Optical Properties and Stimuli-Responsive Phase Transfer

et al. 2014

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We demonstrate essentially complete exfoliation of graphene aggregates in water at concentrations up to 5% by weight (166-fold greater than previous high concentration report) using recently developed triblock copolymers and copolymeric nanolatexes based on a reactive ionic liquid acrylate surfactant. We demonstrate that the visible absorption coefficient in aqueous dispersion, 48.9 ± 1.3 cm(2)/mg at 500 nm, is about twice that currently accepted, and we show that this value is a greatest lower bound to extant macroscopic single sheet optical studies of graphene when one considers both fine structure constant and excitonic mechanisms of visible absorption. We also show that dilute and concentrated graphene dispersions are rheo-optical fluids that exhibit an isotropic to nematic transition upon application of a shear field, and we demonstrate stimuli-responsive phase transfer.

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Aqueous Graphene Dispersions–Optical Properties and Stimuli-Responsive Phase Transfer

et al. 2014

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“…Besides the above-summarized general characteristics, IL properties can be well tuned by optimal selection of cation-anion combinations and functionalization of their structures. − In fact, researchers have observed many insights on the structure-property relationships of ILs. For example, ILs composed of aromatic cations generally exhibit lower melting points than those incorporating nonaromatic cations; nonaromatic cations are chemically and electrochemically more stable than aromatic cations; the melting point and conductivity of an IL decrease with an increase in the length of the side alkyl chain; introducing alkenyl groups normally decreases the viscosity and increases the ionic conductivity and introducing perfluoroalkyl groups usually increases the melting points, etc. − In fact, it is their large ability to tune and tailor the properties that makes ILs “designer solvents” or generally “designer materials” for various applications. − …”

Section: Introductionmentioning

confidence: 99%

Energy Applications of Ionic Liquids: Recent Developments and Future Prospects

Zhou,

Gui,

Sun

et al. 2023

Chem. Rev.

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Ionic liquids (ILs) consisting entirely of ions exhibit many fascinating and tunable properties, making them promising functional materials for a large number of energy-related applications. For example, ILs have been employed as electrolytes for electrochemical energy storage and conversion, as heat transfer fluids and phase-change materials for thermal energy transfer and storage, as solvents and/or catalysts for CO2 capture, CO2 conversion, biomass treatment and biofuel extraction, and as high-energy propellants for aerospace applications. This paper provides an extensive overview on the various energy applications of ILs and offers some thinking and viewpoints on the current challenges and emerging opportunities in each area. The basic fundamentals (structures and properties) of ILs are first introduced. Then, motivations and successful applications of ILs in the energy field are concisely outlined. Later, a detailed review of recent representative works in each area is provided. For each application, the role of ILs and their associated benefits are elaborated. Research trends and insights into the selection of ILs to achieve improved performance are analyzed as well. Challenges and future opportunities are pointed out before the paper is concluded.

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“…Some pioneers have summarized the structure, synthesis, and physical properties and applications of PILs. 16–23 For example, Mecerreyes and Markus Antonietti introduced the synthesis and physicochemical properties of PILs. 16,19 Anuradha Mishra highlighted the solvent choice in polymeric reactions.…”

Section: Introductionmentioning

confidence: 99%