Nonaqueous Microemulsions Based on <i>N</i>,<i>N</i>′-Alkylimidazolium Alkylsulfate Ionic Liquids

Rojas, O.; Tiersch, Brigitte; Rabe, Christian; Stehle, Ralf; Hoell, Armin; Arlt, Bastian; Koetz, Joachim

doi:10.1021/la401080q

Cited by 46 publications

(29 citation statements)

References 51 publications

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“…Therefore, recent efforts have dedicated on the formulation of cosurfactant‐free microemulsion or RMs with biocompatible excipients. Also, SAILs used so far for preparation of RMs mainly contain imidazolium cations, which might cause environmental hazards when released through waste‐water effluents . Therefore, toxicity and biodegradation remain crucial concerns while dealing with the ILs, and the search for synthesis of more greener ILs in terms of toxicity and biodegradability is growing day by day .…”

Section: Introductionmentioning

confidence: 99%

Study on the Conformation of Entrapped Protein inside the Reverse Micellar Confinement Based on the Amino Acid Derived Ionic Liquid

et al. 2018

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Owing to superior surface‐activity and versatility in functionalization compared to conventional surfactants, surface‐active ionic liquids (SAILs) gained immense interest in recent years. Toxicity and biodegradation remain central issues while dealing with the SAILs and thus, the quest for synthesis of greener SAILs is increasing day by day. Keeping in view of the importance of SAIL's performance, we undertook the present study for the formulation of reverse micelles (RMs) using biodegradable L‐proline propyl ester lauryl sulfate ([ProC3][LS]) in cyclohexane (Cy). The formation of RMs was confirmed from the phase behavior and dynamic light scattering (DLS) studies. Fourier‐transform infrared spectroscopy (FTIR) study revealed the solvation of anionic head group through H‐bonding by added water. An increased micropolarity and reduced microviscosity were evidenced inside the RM droplets as a function of hydration level. Finally, the encapsulation of BSA protein in RMs was investigated through the fluorescence, circular dichroism and DLS studies, which showed conformation with higher degree of secondary structural content than the native state inside the droplet core at higher hydration. Our results signify the importance of the role of hydration in the function of enzyme or protein molecules in molecular crowding environments. These facts certainly prove the versatility of this kind of organized assemblies to alter their inherent properties simply by changing water content.

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Section: Introductionmentioning

confidence: 99%

Study on the Conformation of Entrapped Protein inside the Reverse Micellar Confinement Based on the Amino Acid Derived Ionic Liquid

et al. 2018

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“…This second application is probably a more promising option from green chemistry point of view (excludes the use of volatile organic solvents as a nonpolar part of microemulsions), however most of the publications characterize mainly nonaqueous systems, and their number is still increasing [25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Studies on formation and percolation in ionic liquids/TX-100/water microemulsions

Łuczak

Hupka

2014

Journal of Molecular Liquids

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“…identified three phases in microemulsions composed of IL surfactant 1-butyl-3-methylimidazolium dodecylsulfate, 1-ethyl-3-methylimidazolium ethylsulfate ([emim][etSO 4 ]) and toluene; in addition, they reported the formation of spherical micellar aggregates that could solubilize [emim][etSO 4 ] 32. …”

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confidence: 99%

Dynamic Percolation and Swollen Behavior of Nanodroplets in 1-Ethyl-3-methylimidazolium Trifluoromethanesulfonate/Triton X-100/Cyclohexane Microemulsions

Rahman

Mollah

et al. 2016

J. Phys. Chem. B

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Microemulsions comprising an ionic liquid (IL), 1-ethyl-3-methylimidazolium trifluoromethanesulfonate ([emim][OTf]), as the polar component, Triton X-100 as a surfactant, and cyclohexane as the nonpolar medium were prepared and characterized. Conductivity and dynamic viscosity data were critically analyzed to confirm dynamic percolation among the droplets that are in continuous motion, aggregation, and fission. The transition from oil-continuous phase to bicontinuous phase was observed at the conductance and viscosity percolation thresholds and sharp changes in the values of conductivity and dynamic viscosity could be identified. Dynamic light scattering measurements revealed swelling of the droplets, which varied within the hydrodynamic diameter range of 10-100 nm. Diffusivity of the droplets suggested less Brownian movement with increased amount of the IL. Moreover, changes in the droplet sizes and diffusivity with increase in IL content supported dynamic percolation within the systems.

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Nonaqueous Microemulsions Based on N,N′-Alkylimidazolium Alkylsulfate Ionic Liquids

Cited by 46 publications

References 51 publications

Study on the Conformation of Entrapped Protein inside the Reverse Micellar Confinement Based on the Amino Acid Derived Ionic Liquid

Study on the Conformation of Entrapped Protein inside the Reverse Micellar Confinement Based on the Amino Acid Derived Ionic Liquid

Studies on formation and percolation in ionic liquids/TX-100/water microemulsions

Dynamic Percolation and Swollen Behavior of Nanodroplets in 1-Ethyl-3-methylimidazolium Trifluoromethanesulfonate/Triton X-100/Cyclohexane Microemulsions

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