Role of added counterions in the micellar growth of bisquaternary ammonium halide surfactant (14-s-14): 1H NMR and viscometric studies

Siddiqui, Umme Salma; Khan, Farah; Khan, Iqrar Ahmad; Dar, Aijaz Ahmad; Kabir-ud-Din, †

doi:10.1016/j.jcis.2010.12.007

Cited by 39 publications

(14 citation statements)

References 60 publications

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“…Our results strongly the fact that, being larger, the chaotropic anion SCN − shows more pronounced micellar growth, the reason of which has already been discussed. Hence it can be well stated that the micellar growth of the cationic gemini surfactant is governed by the nature and structure of salt anions following the Hofmeister series as: Cl − < NO 3 − < SCN − in the present case.As already reported that organic salts show more pronounced micellar morphological transition[27] we have covered the influence of organic salts (NaBen and NaSal) in detail at their varied concentrations on 0.0064 mM 16-E2-16 by 1 H NMR measurements. In this regard, the role of partitioning site of an aromatic salt counterion on the micellar morphology has been taken into account.…”

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confidence: 99%

“…The aromatic counterions affect the micellization of gemini surfactants both electrostatistically as well as hydrophobically. Due to their greater tendency of penetrating the head group region of surfactant aggregates, organic counterions are well known growth enhancers at lower loadings[27]. Apart from others (e.g., geometric packing constituents, electronic substituent effects, solvation effects, etc.…”

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confidence: 99%

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Micellization and interfacial behavior of 16-E2-16 in presence of inorganic and organic salt counterions

Akram¹,

Yousuf²,

Sarwar³

et al. 2014

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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confidence: 99%

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confidence: 99%

Micellization and interfacial behavior of 16-E2-16 in presence of inorganic and organic salt counterions

Akram¹,

Yousuf²,

Sarwar³

et al. 2014

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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“…In the case of mixtures, all peaks are showing a clear downfield shift for both compounds, I1–I6 as well as T1–T8, at different mixing ratios. The compactness of the micelles varies with the variation of mole fraction, which is clear from the chemical shift values [ 47 , 48 ]. This change in chemical shift values is attributed to the interplay of electrostatic and steric interactions.…”

Section: Resultsmentioning

confidence: 99%

Interaction of TX-100 and Antidepressant Imipramine Hydrochloride Drug Mixture: Surface Tension, 1H NMR, and FT-IR Investigation

Rub

Azum

Kumar

et al. 2022

Gels

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Interfacial interaction amongst the antidepressant drug-imipramine hydrochloride (IMP) and pharmaceutical excipient (triton X-100 (TX-100-nonionic surfactant)) mixed system of five various ratios in dissimilar media (H2O/50 mmol·kg−1 NaCl/250 mmol·kg−1 urea) was investigated through the surface tension method. In addition, in the aqueous solution, the 1H-NMR, as well as FT-IR studies of the studied pure and mixed system were also explored and deliberated thoroughly. In NaCl media, properties of pure/mixed interfacial surfaces enhanced as compared with the aqueous system, and consequently the synergism/attractive interaction among constituents (IMP and TX-100) grew, whereas in urea (U) media a reverse effect was detected. Surface excess concentration (Γmax), composition of surfactant at mixed monolayer (X1σ), activity coefficient (f1σ (TX-100) and f2σ (IMP)), etc. were determined and discussed thoroughly. At mixed interfacial surfaces interaction, parameter (βσ) reveals the attractive/synergism among the components. The Gibbs energy of adsorption (ΔGadso) value attained was negative throughout all employed media viewing the spontaneity of the adsorption process. The 1H NMR spectroscopy was also employed to examine the molecular interaction of IMP and TX-100 in an aqueous system. FT-IR method as well illustrated the interaction amongst the component. The findings of the current study proposed that TX-100 surfactant could act as an efficient drug delivery vehicle for an antidepressant drug. Gels can be used as drug dosage forms due to recent improvements in the design of surfactant systems. Release mechanism of drugs from surfactant/polymer gels is dependent upon the microstructures of the gels and the state of the drugs within the system.

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“…This is a typical character of wormlike micelles . This phenomenon is attributed to the intermolecular noncovalent bond interaction, leading to the change of critical packing parameters (CPP) of surfactants. ,− Cross and Carreau models were used to obtain the η 0 . The variation of η 0 for 40 mM 12-3-12·2Br – with the concentration of the cinnamate derivatives is shown in Figure d.…”

Section: Resultsmentioning

confidence: 99%

Photoresponsive Behavior of Wormlike Micelles Constructed by Gemini Surfactant 12-3-12·2Br^– and Different Cinnamate Derivatives

et al. 2019

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The photoresponsive wormlike micelles constructed by Gemini surfactants and cinnamate derivatives play a great role in the field of smart materials. However, how the structure of cinnamate derivatives affects the photoresponsive behavior of micelles is still a hotspot for scientists to research. Here, three kinds of aromatic salts with different ortho-substituted groups including trans-o-methoxy cinnamate (trans-OMCA), trans-o-hydroxy cinnamate (trans-OHCA), and trans-cinnamate (trans-CA) were introduced into Gemini surfactant 12-3-12·2Br– aqueous solutions to construct photoresponsive wormlike micelles through their noncovalent interactions. Their properties were researched using the rheological method, cryo-transmission electron microscopy, and 1H NMR and two-dimensional nuclear Overhauser effect spectra. The results show that these cinnamate derivatives could well construct wormlike micelles with 12-3-12·2Br–. Furthermore, subtle differences in the ortho substituents’ structure have a significant effect on the photoresponsive behavior of formed wormlike micelles. Specifically, the zero viscosity (η0) of 40 mM 12-3-12·2Br–/24 mM trans-OHCA mixed solution decreases from 26.72 to 2.6 Pa·s with the shortening of the length of wormlike micelles after UV irradiation. Correspondingly, the η0 for the same ratio of 12-3-12·2Br–/trans-OMCA decreases from 2.42 to 0.06 Pa·s and the wormlike micelles are transited into rodlike micelles and even spherical micelles after the same UV irradiation time. However, the variation of wormlike micelles in the 12-3-12·2Br–/trans-CA system induced by UV light is not obvious with η0 being maintained at around 2.89 Pa·s. This study will help us better understand the effects of chemical groups on macrophenomena and microinteraction for micellar systems. It provides a theoretical basis for the construction of photoresponsive micelles, thus widening their application in the field of soft materials.

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Role of added counterions in the micellar growth of bisquaternary ammonium halide surfactant (14-s-14): 1H NMR and viscometric studies

Cited by 39 publications

References 60 publications

Micellization and interfacial behavior of 16-E2-16 in presence of inorganic and organic salt counterions

Micellization and interfacial behavior of 16-E2-16 in presence of inorganic and organic salt counterions

Interaction of TX-100 and Antidepressant Imipramine Hydrochloride Drug Mixture: Surface Tension, 1H NMR, and FT-IR Investigation

Photoresponsive Behavior of Wormlike Micelles Constructed by Gemini Surfactant 12-3-12·2Br^– and Different Cinnamate Derivatives

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Role of added counterions in the micellar growth of bisquaternary ammonium halide surfactant (14-s-14): 1H NMR and viscometric studies

Cited by 39 publications

References 60 publications

Micellization and interfacial behavior of 16-E2-16 in presence of inorganic and organic salt counterions

Micellization and interfacial behavior of 16-E2-16 in presence of inorganic and organic salt counterions

Interaction of TX-100 and Antidepressant Imipramine Hydrochloride Drug Mixture: Surface Tension, 1H NMR, and FT-IR Investigation

Photoresponsive Behavior of Wormlike Micelles Constructed by Gemini Surfactant 12-3-12·2Br– and Different Cinnamate Derivatives

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Product

Resources

About

Photoresponsive Behavior of Wormlike Micelles Constructed by Gemini Surfactant 12-3-12·2Br^– and Different Cinnamate Derivatives