Spectrophotometric and conductometric studies on the interaction of surfactant with polyelectrolyte in the presence of dye in aqueous medium

Yadav, Saurabh; Rai, Summi; Shah, Pawan; Roy, Nilanjan; Bhattarai, Ajaya

doi:10.1016/j.molliq.2022.118949

Cited by 3 publications

(2 citation statements)

References 104 publications

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“…The slope for the higher concentration range (>0.22 mmol/L) was identical to that observed without the presence of RBB KN-R, albeit it was greater than the slope for the lower concentration range (<0.22 mmol/L). These findings suggest that RBB KN-R interacted with each surfactant in a 1:1 molar ratio under the prevailing solution conditions [24,26].…”

Section: Effects Of Alkyl Chain Length On Conductivity Of Surfactant ...mentioning

confidence: 74%

“…In an aqueous solution, the interaction between an ionic dye and a surfactant of opposite electrical charge can be attributed to electrostatic attraction, resulting in a noticeable modification of the solution's conductivity [23][24][25]. Thus, we investigated the electrostatic interactions between RBB KN-R and three surfactants, namely DTAB, TTAB, and CTAB, by monitoring the changes in solution conductivity corresponding to varying surfactant concentrations.…”

Section: Effects Of Alkyl Chain Length On Conductivity Of Surfactant ...mentioning

confidence: 99%

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Role of Alkyl Chain Length in Surfactant-Induced Precipitation of Reactive Brilliant Blue KN-R

Liu,

Chang,

et al. 2024

Molecules

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To develop a cost-effective method for the effective removal of reactive brilliant blue KN-R (RBB KN-R) from wastewater, we investigated the interactions between RBB KN-R and three cationic surfactants with different alkyl chain lengths, namely dodecyltrimethylammonium bromide (DTAB), tetradecyltrimethylammonium bromide (TTAB), and cetyltrimethylammonium bromide (CTAB). Employing a conductivity analysis, surface tension analysis, ultraviolet-visible spectrophotometry, and molecular dynamics simulation, we ascertained that RBB KN-R formed a 1:1 molar ratio dye–surfactant complex with each surfactant through electrostatic attraction. Notably, an augmentation in alkyl chain length correlated with increased binding strength between RBB KN-R and the surfactant. The resulting dye–surfactant complex exhibited heightened surface activity, enabling interactions through hydrophobic forces to generate dye–surfactant aggregates when the molar ratio was below 1:1. Within these mixed aggregates, self-assembly of RBB KN-R molecules occurred, leading to the formation of dye aggregates. Due to the improved hydrophobicity with increased alkyl chain length, TTAB and CTAB could encapsulate dye aggregates within the mixed aggregates, but DTAB could not. The RBB KN-R aggregates tended to distribute on the surface of the RBB KN-R-DTAB mixed aggregates, resulting in low stability. Thus, at a DTAB concentration lower than CMC, insoluble particles readily formed and separated from surfactant aggregates at an RBB KN-R and DTAB molar ratio of 1:4. Analyzing the RBB KN-R precipitate through scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) and measuring the DTAB concentration in the supernate revealed that, at this molar ratio, all RBB KN-R precipitated from the dye–surfactant mixed solution, with only 7.5 ± 0.5% of DTAB present in the precipitate. Furthermore, the removal ratio of RBB KN-R reached nearly 100% within a pH range of 1.0 to 9.0 and standing time of 6 h. The salt type and concentration did not significantly affect the precipitation process. Therefore, this simultaneous achievement of successful RBB KN-R removal and effective separation from DTAB underscores the efficacy of the proposed approach.

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Section: Effects Of Alkyl Chain Length On Conductivity Of Surfactant ...mentioning

confidence: 74%

Section: Effects Of Alkyl Chain Length On Conductivity Of Surfactant ...mentioning

confidence: 99%

Role of Alkyl Chain Length in Surfactant-Induced Precipitation of Reactive Brilliant Blue KN-R

Liu,

Chang,

et al. 2024

Molecules

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Impact of sodium polystyrene sulfonate on micellization behaviour of cetyltrimethylammonium bromide in the presence of methyl red in ethanol–water mixture: A conductometric investigation

Narayan Yadav,

Rai,

Bhattarai

et al. 2024

Journal of Molecular Liquids

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Studies of Protein Binding to Biomimetic Membranes Using a Group of Uniform Materials Based on Organic Salts Derived From 8-Anilino-1-naphthalenesulfonic Acid

Azevedo,

Nunes,

Moniz

et al. 2024

Appl Spectrosc

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Tuning the 8-anilino-1-naphthalenesulfonic acid (ANS) structure usually requires harsh conditions and long reaction times, which can result in low yields. Herein, ANS was modified to form an ANS group of uniform materials based on organic salts (GUMBOS), prepared with simple metathesis reactions and distinct cations, namely tetrabutylammonium (N4444), tetrahexylammonium (N6666), and tetrabutylphosphonium (P4444). These ANS-based GUMBOS were investigated as fluorescent probes for membrane binding studies with four proteins having distinct physicochemical properties. Liposomes of 1,2-dimyristoyl- sn-glycero-3-phosphocholine were employed as membrane models as a result of their ability to mimic the structure and chemical composition of cell membranes. Changes in fluorescence intensity were used to monitor protein binding to liposomes, and adsorption data were fitted to a Freundlich-like isotherm. It was determined that [N4444][ANS] and [P4444][ANS] GUMBOS have enhanced optical properties and lipophilicity as compared to parent ANS. As a result, these two GUMBOS were selected for subsequent protein-membrane binding studies. Both [N4444][ANS] and [P4444][ANS] GUMBOS and parent ANS independently reached membrane saturation within the same concentration range. Furthermore, distinct fluorescence responses were observed upon the addition of proteins to each probe, which demonstrates the impact of properties such as lipophilicity on the binding process. The relative maintenance of binding cooperativity and maximum fluorescence intensity suggests that proteins compete with ANS-based probes for the same membrane binding sites. Finally, this GUMBOS-based approach is simple, rapid, and involves relatively small amounts of reagents, making it attractive for high-throughput purposes. These results presented herein can also provide relevant information for designing GUMBOS with ameliorated properties.

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Spectrophotometric and conductometric studies on the interaction of surfactant with polyelectrolyte in the presence of dye in aqueous medium

Cited by 3 publications

References 104 publications

Role of Alkyl Chain Length in Surfactant-Induced Precipitation of Reactive Brilliant Blue KN-R

Role of Alkyl Chain Length in Surfactant-Induced Precipitation of Reactive Brilliant Blue KN-R

Impact of sodium polystyrene sulfonate on micellization behaviour of cetyltrimethylammonium bromide in the presence of methyl red in ethanol–water mixture: A conductometric investigation

Studies of Protein Binding to Biomimetic Membranes Using a Group of Uniform Materials Based on Organic Salts Derived From 8-Anilino-1-naphthalenesulfonic Acid

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