Ionogels of pseudogemini supra-amphiphiles in ethylammonium nitrate: Structures and properties

Wang, Xiaolin; Zhang, Zhuo; Cao, Yixue; Hao, Jian

doi:10.1016/j.jcis.2016.12.031

Cited by 16 publications

(11 citation statements)

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“…1) and used to construct supramolecular gemini surfactant structures with a bolaform electrolyte, ethane-1,2-bis(trimethyl ammonium bromide), abbreviated N-2-N bromide. In contrast to previously reported systems, 19,21,[31][32][33][34][35][36] the inorganic salts were removed in the present system. Wormlike micelle formation was observed over a wide range of concentrations in this inorganic salt-free system (di-Ph-C16/N-2-N), which provided insight into the properties of wormlike micelles in the absence of inorganic salts.…”

Section: Introductioncontrasting

confidence: 75%

“…17,19,[27][28][29] Gemini surfactants, which are composed of two alkyl chains, two head groups and a spacer, have an advantageous molecular geometry and can form wormlike micelles without the addition of salts. 15,16,30 To avoid a tedious synthesis of new, structured gemini surfactants, a strategy has been developed to construct wormlike micelles using pseudo-gemini surfactants 19,21,[31][32][33][34][35][36][37] with gemini-like structures that are formed via intermolecular electrostatic interactions. Inspired by this strategy, a new anionic surfactant, sodium 2-phenoxyhexadecanoate (sodium Ph-C16), was synthesized in this work ( Fig.…”

Section: Introductionmentioning

confidence: 99%

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Viscoelastic properties of supramolecular gemini-like surfactant solutions in the absence of inorganic salts

et al. 2017

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Exploration of novel wormlike micelle systems is important for both the theory and applications of surfactant self-assembly. A new anionic surfactant, sodium 2-phenoxyhexadecanoate (sodium Ph-C16), was synthesized in this work. This surfactant can self-assemble in solution to form wormlike micelles with the help of a bolaform salt, ethane-1,2-bis(trimethyl ammonium bromide) (N-2-N bromide), by removing inorganic salts. The resultant aqueous system was investigated using rheological measurements, freeze-fractured-TEM and 2D NOESY 1 H NMR experiments. A supramolecular geminilike structure constructed from electrostatic interactions was a prerequisite for the wormlike micelle formation. The zero shear viscosity (h 0 ) of the system had a very strong dependence on the surfactant concentration with a scaling exponent of 16.8 in the semi-dilute region, which is attributed to the extremely strong electrostatic attraction between the surface-active anions and bolaform cations. These results are beneficial for understanding anionic wormlike micelles in the absence of inorganic salts. † Electronic supplementary information (ESI) available: Synthesis details of sodium Ph-C16 and N-2-N bromide and showing the steady shear viscosity curve of sodium Ph-C16 at 200 mmol L À1 . See

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Section: Introductioncontrasting

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Viscoelastic properties of supramolecular gemini-like surfactant solutions in the absence of inorganic salts

et al. 2017

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“…Gemini surfactants can very easily change their morphological structures upon pH, temperature and salts [233][234][235][236][237][238][239].…”

Section: Drug Nanocarriersmentioning

confidence: 99%

Multifunctional Gemini Surfactants: Structure, Synthesis, Properties and Applications

Brycki¹,

Kowalczyk²,

Szulc³

et al. 2017

Application and Characterization of Surfactants

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Gemini cationic surfactants are compounds which are composed of two hydrophilic head groups and two hydrophobic tails linked by a spacer at the head groups or closed to them. The spacer can be either hydrophobic or hydrophilic. It can be rigid or flexible. The neutral charge of the molecule is retained by the presence of organic or inorganic counterions. Critical micelle concentrations (CMCs), surface tension (γ) and minimal inhibitory concentration (MIC) are dozen times lower than corresponding parameters of monomeric surfactants. The unique properties of gemini surfactants with a wide range of hydrophiliclipophilic balance (HLB) make them a very useful, innovative material in detergents, cosmetics, personal care products, additives for paints and coatings, biocides, material science, organic synthesis, pharmacy, textiles, enhanced oil recovery, nanotechnology, petroleum and many other branches of life. A large number of papers concerning gemini surfactants have been published so far. This review presents a synthetic look at current work devoted to structure, synthesis and applications of gemini surfactants.

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“…As seen from Figure c, when the concentration of ligands is fixed at 100 mmol/L, the mechanical strength of the gels increases first and then decreases with the increase of Fe 3+ concentration. In the initial stage, the crosslink density increases with the increase of Fe 3+ concentration, which contributes to the formation of more rigid networks and increase the strength of gels . Competitive coordination occurs when the concentration of Fe 3+ continued to increase, which could reduce the mechanical strength of the gels.…”

Section: Resultsmentioning

confidence: 99%

Metal‐organic gels of simple chemicals and their high efficacy in removing arsenic(V) in water

et al. 2018

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Metal‐organic gels (MOGs) have emerged as a class of functional materials that show great potential applications in the field of catalysis, energy storage, template synthesis, and environmental technology. The construction of functional MOGs and the control of functionality are still challenging due to complicated chemicals or routes involved in previous works. Here we report a series of tunable multifunctional MOGs by directly gelating between Fe3+ and simple chemicals, propanedioic acid (H2PA), succinic acid (H2SA), glutaric acid (H2GA), and fumaric acid (H2FA) in ethanol. The obtained MOGs exhibit self‐healing property and good conductivity, and were used for high efficacy removal of arsenic (As) in water. The ease, low cost, and scalability of the assembly process combined with multifunctionality make these MOGs be potentially applied in the fields of energy storage and sewage disposal. © 2018 American Institute of Chemical Engineers AIChE J, 64: 3719–3727, 2018

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Ionogels of pseudogemini supra-amphiphiles in ethylammonium nitrate: Structures and properties

Cited by 16 publications

References 50 publications

Viscoelastic properties of supramolecular gemini-like surfactant solutions in the absence of inorganic salts

Viscoelastic properties of supramolecular gemini-like surfactant solutions in the absence of inorganic salts

Multifunctional Gemini Surfactants: Structure, Synthesis, Properties and Applications

Metal‐organic gels of simple chemicals and their high efficacy in removing arsenic(V) in water

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