Many Protic Ionic Liquids Mediate Hydrocarbon-Solvent Interactions and Promote Amphiphile Self-Assembly

Greaves, Tamar L.; Weerawardena, Asoka; Fong, Celesta; Drummond, Calum J.

doi:10.1021/la062895k

Cited by 150 publications

(209 citation statements)

References 16 publications

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“…Only a few other solvents other than water are capable of supporting amphiphilc selforganization. 26,30,[33][34] These solvents include a very limited range of multifunctional alcohols (such as ethylene glycol) and amides and a wide range of protic ionic liquids widely known as…”

Section: Insights Into the Formation Of Lc Gomentioning

confidence: 99%

Organic Solvent-Based Graphene Oxide Liquid Crystals: A Facile Route toward the Next Generation of Self-Assembled Layer-by-Layer Multifunctional 3D Architectures

et al. 2013

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. (2013). Organic solventbased graphene oxide liquid crystals: A facile route toward the next generation of self-assembled layer-by-layer multifunctional 3D architectures. ACS Nano, 7 (5), 3981-3990.Organic solvent-based graphene oxide liquid crystals: A facile route toward the next generation of self-assembled layer-by-layer multifunctional 3D architectures AbstractWe introduce soft self-assembly of ultralarge liquid crystalline (LC) graphene oxide (GO) sheets in a wide range of organic solvents overcoming the practical limitations imposed on LC GO processing in water. This expands the number of known solvents which can support amphiphilic self-assembly to ethanol, acetone, tetrahydrofuran, N-dimethylformamide, N-cyclohexyl-2-pyrrolidone, and a number of other organic solvents, many of which were not known to afford solvophobic self-assembly prior to this report. The LC behavior of the as-prepared GO sheets in organic solvents has enabled us to disperse and organize substantial amounts of aggregate-free single-walled carbon nanotubes (SWNTs, up to 10 wt %) without compromise in LC properties. The as-prepared LC GO-SWNT dispersions were employed to achieve self-assembled layer-bylayer multifunctional 3D hybrid architectures comprising SWNTs and GO with unrivalled superior mechanical properties (Young's modulus in excess of 50 GPa and tensile strength of more than 500 MPa). 2013 American Chemical Society.

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Section: Insights Into the Formation Of Lc Gomentioning

confidence: 99%

Organic Solvent-Based Graphene Oxide Liquid Crystals: A Facile Route toward the Next Generation of Self-Assembled Layer-by-Layer Multifunctional 3D Architectures

et al. 2013

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“…Consequently, designing functional ILs with special functional structure and economic rationality is of crucial importance in exploring novel interfacial modifier for rubber/filler composites. In a recent study, protic ILs could be high efficiently fabricated and their structure ccould be easily tailored with numerous commercially available raw materials such as Bronsted acids and bases [34][35][36][37][38]. In our previous work, a functional group was successfully induced into the anion of IL.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of novel functional liquid and its application as a modifier in SBR/silica composites

Lei¹,

Tang²,

Guo³

et al. 2010

Express Polym. Lett.

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Abstract.A novel functional ionic liquid (IL), 1-methylimidazolium methacrylate (MimMa), was synthesized for modifying styrene butadiene rubber (SBR)/silica composites. MimMa was found to be readily polymerized via the initiated radical mechanism and could be analogously grafted onto rubber chains during vulcanization. Substantial hydrogen bonding between polymerized MimMa (poly(MimMa)) and silica can facilitate the silica dispersion and improve the SBR/silica interfacial bonding. Filler networking, curing behavior, silica dispersion and mechanical performance of the modified SBR/silica composites were studied. With a low concentration of MimMa, remarkable improvements in the interfacial interactions and mechanical properties were achieved which was attributed to the improved silica dispersion and strengthened interfacial bonding induced by MimMa. A modified interphase structure was accordingly proposed and related to the mechanical performance of the modified SBR/silica composites.

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“…To date, PILs have not received a particularly large share of the literature based on IL studies. 7 Nevertheless, this IL family has many useful properties and potential applications, often arising from their protic nature, including as self-assembly media, [8][9][10][11][12] reaction media and catalysts for organic reactions, [13][14][15] biological applications, [16][17][18] proton conducting electrolytes for polymer membrane fuel cells, [19][20][21] and explosives. 22,23 In spite of the importance of IL properties in aqueous or nonaqueous solutions, there is limited information available on the thermodynamic properties of IL mixtures with other fluids and these properties still lacking.…”

Section: Introductionmentioning

confidence: 99%

Volumetric Properties, Viscosities, and Isobaric Heat Capacities of Imidazolium Octanoate Protic Ionic Liquid in Molecular Solvents

2010

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Densities (F), viscosities (η), and isobaric heat molar capacities (C p ) of binary mixtures containing imidazolium octanoate, [Im][C 7 CO 2 ], a protic ionic liquid (PIL), with four molecular solvents, water, acetonitrile, ethanol, and 1-octanol, are determined as a function of temperature from (298.15 to 323.15) K and within the whole composition range at atmospheric pressure. Excess molar volumes, V E , excess molar heat capacities, C p E , and the deviation from additivity rules of viscosities, ∆η, of imidazolium octanoate solutions were then deduced from the experimental results, as well as apparent molar volumes, V φi , and partial molar volumes, V j m,i . Results are discussed according to the nature of the interaction between the PIL and the molecules and the effect of temperature. The excess Gibbs energies of activation of viscous flow (∆G *E ) for these systems were then calculated at 298.15 K. The excess isobaric heat capacities, C p E , of binary ([Im][C 7 CO 2 ] + solvent) systems, depend also of the nature of the molecular solvent in mixture. The excess properties were then correlated, at each temperature, as a function of composition by a Redlich-Kister-type equation. Finally results have been discussed in terms of molecular interactions and molecular structures in these binary mixtures, and thermodynamic properties of investigated binary mixtures were then compared to literature values together to investigate the impact of the nature of the solvent on these reported properties.

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Many Protic Ionic Liquids Mediate Hydrocarbon-Solvent Interactions and Promote Amphiphile Self-Assembly

Cited by 150 publications

References 16 publications

Organic Solvent-Based Graphene Oxide Liquid Crystals: A Facile Route toward the Next Generation of Self-Assembled Layer-by-Layer Multifunctional 3D Architectures

Organic Solvent-Based Graphene Oxide Liquid Crystals: A Facile Route toward the Next Generation of Self-Assembled Layer-by-Layer Multifunctional 3D Architectures

Synthesis of novel functional liquid and its application as a modifier in SBR/silica composites

Volumetric Properties, Viscosities, and Isobaric Heat Capacities of Imidazolium Octanoate Protic Ionic Liquid in Molecular Solvents

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