Modulating effect of ionic liquid 1-butyl-2,3-dimethylimidazolium chloride on micellization behaviour of cationic surfactant dodecyltrimethylammonium bromide in aqueous media

Pal, Amalendu; Pillania, Ankita

doi:10.1016/j.fluid.2015.01.013

Cited by 27 publications

(12 citation statements)

References 33 publications

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“…3, S1 and S2, † the CMCs, the degree of dissociation (a) and the thermodynamic parameters of aggregation for ILs/CTAB in water were calculated at ve different temperatures of 298. 15 Table 1 show that the CMCs value of the C n mimBr aqueous systems decreased with the increase in the alkyl chain length and increased with increasing temperature, 27,32 which is consistent with the description in the literature 33 and the results for other IL solutions. 25 This can be interpreted as elevated temperature causes the disruption of the water structure leading to low solubility of the surfactant.…”

Section: Conductivity Measurementsupporting

confidence: 88%

“…This may be interpreted that aer the addition of CTAB, increased counterion dissociation from CTAB into solution leads to a stronger electrostatic attractive effect between the Br À and the imidazolium cation than electrostatic repulsion, thus the lower electronic density of the imidazolium cation results in the signals of H2, 4, and 5 shiing toward lower eld. 27 However, an upeld shi was also observed for protons of the imidazole ring (H6), but not signicant in comparison with the tail region protons (H8-11) because the magnetic environment of proton H6 located at the micellar surface would not be changed so remarkably aer addition of CTAB.…”

Section: H Nmrmentioning

confidence: 98%

“…Considering the CMC of CTAB is about 0.90 mM, 9,27 the concentrations values of CTAB that lie on both sides of the CMC of CTAB were selected to investigate the effect of adding CTAB monomer or micelles to IL aqueous solution on the CMC values and surface activities of mixed systems. The representative plots of the conductance of the mixed system (C 12 mimBr/CTAB system) versus IL concentration on addition of different concentrations of CTAB in aqueous medium are shown in Fig.…”

Section: Conductivity Measurementmentioning

confidence: 99%

“…18,19 Different measurement technologies were used to obtain the needed surface activities and thermodynamics functions, such as a small-angle neutron scattering (SANS), 13,20 dynamic light scattering (DLS) and viscosity measurements, 17 conductivity, 12,21,22 surface tension measurements, 23 as well different analytical methods, FT-IR, 3 UV-visible spectrum, 22,24 uorescence spectroscopy, 4,22,25,26 isothermal titration calorimeter 25 and NMR technology. 27,28 Apart from the self-assemblies and applications of ILs surfactants in various elds, the aggregation behavior of 1-alkyl-3-methylimidazolium (C n mim + ) in water has been presented by many research groups. 13,15,29 The micellization behavior of the DTAB/bdmimCl system has been reported by Pal' group, 27 also including their related work on tetradecyltrimethylammonium bromide TTAB/C 5 mim/PF 6 system, 30 CTAB/bdmimBr system, 31 odmimCl/DTAB mixed system, 21 and TTAB/bdmimBr mixture.…”

Section: Introductionmentioning

confidence: 99%

“…27,28 Apart from the self-assemblies and applications of ILs surfactants in various elds, the aggregation behavior of 1-alkyl-3-methylimidazolium (C n mim + ) in water has been presented by many research groups. 13,15,29 The micellization behavior of the DTAB/bdmimCl system has been reported by Pal' group, 27 also including their related work on tetradecyltrimethylammonium bromide TTAB/C 5 mim/PF 6 system, 30 CTAB/bdmimBr system, 31 odmimCl/DTAB mixed system, 21 and TTAB/bdmimBr mixture. 28 However, in all these systems, all studied ILs as an additive were added into traditional surfactant solution to form IL-surfactant mixtures.…”

Section: Introductionmentioning

confidence: 99%

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Surface adsorption and thermodynamic properties of mixed system of ionic liquid surfactants with cetyltrimethyl ammonium bromide

Wang

2017

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Section: Conductivity Measurementsupporting

confidence: 88%

Section: H Nmrmentioning

confidence: 98%

Section: Conductivity Measurementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Surface adsorption and thermodynamic properties of mixed system of ionic liquid surfactants with cetyltrimethyl ammonium bromide

Wang

2017

RSC Adv.

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Fluorescence Spectroscopy to Probe Ionic Liquid‐Based Systems

Pandey

Trivedi

Pandey³

2018

Encyclopedia of Analytical Chemistry

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Owing to its inherent sensitivity coupled with multidimensionality, fluorescence spectroscopy has established itself as a versatile tool to investigate complex chemical systems in analytical chemistry. Ionic liquids, for the last couple of decades or so, have emerged as intriguing modern materials in science and technology that display an array of useful and sometimes unconventional features. Steady‐state fluorescence intensity and anisotropy and time‐resolved excited‐state emission intensity and anisotropy decays along with other advanced fluorescence techniques have been employed effectively to analyze, characterize, and explore ionic liquids and ionic liquid‐based systems. The extent of dipolarity afforded by ionic liquids as well as cosolvent/supercritical fluid‐added ionic liquid systems is readily manifested through the response of judiciously selected fluorescence polarity probes. Transient solvation measurements carried out by means of time‐resolved fluorescence measurements are particularly powerful for their ability to parameterize the kinetics of the solvation process within ionic liquids. Dynamic Stokes' shift of appropriate fluorescence probes reveals the presence of several components, thus highlighting the complexity of solvation within ionic liquids and ionic liquid‐based media. Various fluorescence spectroscopic tools are used to establish and characterize macromolecular (surfactant and polymer) and dye aggregation within ionic liquids and ionic liquid‐based media along with aggregation of surface‐active ionic liquids (SAILs) in water.

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Effects of 1‐Alkyl‐(and 1‐Benzyl)‐2,3‐Dimethylimidazolium Ionic Liquids as Additives on the Micellar Behavior of Surfactant SB‐12

Pal

Pillania

2018

J Surfact & Detergents

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The micellization and surface-active behavior of zwitterionic surfactant N-dodecyl-N,N-dimethyl-3-ammonio-1-propanesulfonate (SB-12) in aqueous media were investigated in the absence and presence of different alkyl-appended and benzyl-appended ionic liquids (IL)The characteristics of self-organization processes in SB-12 + IL/water systems include critical micelle concentration (cmc), aggregation number (N agg ), micellar size (D), surface, and adsorption parameters. These parameters were determined by the fluorescence and surface tension measurements. In SB-12 solutions, cmc were found to be decreasing to different extents in the presence of all the studied IL than in pure water. The addition of IL [hdmim][Br] decreases the cmc of aqueous SB-12 to rather a low extent. The other three IL show a prominent lowering in cmc of surfactant SB-12 to different magnitude. The maximum lowering in cmc was observed due to addition of benzyl-appended IL [bzdmim] [Cl]. The aggregation number of aqueous SB-12 solution obtained in general is higher at high wt.% of added IL. The average micellar size was also found to increase upon addition of IL. Both IL anions and cations interacted with the charged centers present on the zwitterionic surfactant SB-12, which caused a substantial increase in the surface activity.Keywords Critical micelle concentration Á Benzyl appended ionic liquid Á SB-12 Á Tensiometry Á Fluoremetry J Surfact Deterg (2019) 22: 327-338. Synthesis of 1-Benzyl-2,3-Dimethylimidazolium Chloride [bzdmim][Cl]IL [bzdmim][Cl] was synthesized by slowly adding slight excess of benzyl chloride (10 g, 79 mmol) to 1,2dimethylimidazole (7.2 g, 75 mmol) in a round bottom flask. The resulting solution was refluxed between 60 and 70 C for 24 h under a N 2 atmosphere. After this, the reaction mixture was allowed to cool down and the product obtained was washed three times using diethyl ether. The solid product obtained dried under vacuum gives 1-benzyl-2,3dimethylimidazolium chloride [bzdmim] [Cl]. The reaction yields 85% of product. The water content determined through Karl-Fisher examination was found to be <380 ppm. 328 J Surfact Deterg J Surfact Deterg (2019) 22: 327-338

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Modulating effect of ionic liquid 1-butyl-2,3-dimethylimidazolium chloride on micellization behaviour of cationic surfactant dodecyltrimethylammonium bromide in aqueous media

Cited by 27 publications

References 33 publications

Surface adsorption and thermodynamic properties of mixed system of ionic liquid surfactants with cetyltrimethyl ammonium bromide

Surface adsorption and thermodynamic properties of mixed system of ionic liquid surfactants with cetyltrimethyl ammonium bromide

Fluorescence Spectroscopy to Probe Ionic Liquid‐Based Systems

Effects of 1‐Alkyl‐(and 1‐Benzyl)‐2,3‐Dimethylimidazolium Ionic Liquids as Additives on the Micellar Behavior of Surfactant SB‐12

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