Spectrophotometric study of the sodium dodecyl sulfate in the presence of methylene blue in the methanol–water mixed solvent system

Shah, Pawan; Jha, Sasinath; Bhattarai, Ajaya

doi:10.1016/j.molliq.2021.117200

Cited by 24 publications

(9 citation statements)

References 79 publications

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“…Spectrophotometric analysis is popular for analyzing dyes that are water soluble (Direct dyes) and insoluble (lake dyes) [31]. Differential spectroscopy has proven to be the most suitable method for detecting dyesurfactant interactions [32]. Differential absorbance provides insight into the binding and partition behaviour of oppositely charged dyes and surfactants using the Benesi-Hilderbrand Equation (1) and the pseudo-phase model in Equation (4), respectively.…”

Section: Determination Of Binding and Partition Parameters Using Diff...mentioning

confidence: 99%

Interaction of Methyl Red with Cetylpyridinium Chloride in Methanol-Water System

Shahi

Shah

Yadav

et al. 2023

Gazi University Journal of Science

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Section: Determination Of Binding and Partition Parameters Using Diff...mentioning

confidence: 99%

Interaction of Methyl Red with Cetylpyridinium Chloride in Methanol-Water System

Shahi

Shah

Yadav

et al. 2023

Gazi University Journal of Science

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“…Moreover, it was shown that when the concentration of methanol decreased on the surface of the solution, the surface area increased. Also, with an increase in the fractional amount of methanol, the pressure at the surface decreased …”

Section: Effect Of Cosolvent On Amino Acid–surfactant Interactionsmentioning

confidence: 99%

“…Also, with an increase in the fractional amount of methanol, the pressure at the surface decreased. 29 Sinha et al studied the self-aggregation properties of some cationic monomeric and dimeric surfactants in polar organic solvents like ethylene glycol and diethylene glycol and observed that the aggregation phenomenon is affected positively with the addition of certain polar organic solvents. It was further revealed that the CMC of surfactants increased in water−organic solvents compared to pure water.…”

Section: Effect Of Cosolvent On Amino Acid−surfactant Interactionsmentioning

confidence: 99%

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A Review on Interactions between Amino Acids and Surfactants as Well as Their Impact on Corrosion Inhibition

Muhammad

Singh

et al. 2022

ACS Omega

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Amino acid−surfactant interactions are central to numerous studies because of their increased effectiveness in chemical, biological, household and industrial use. This review will focus on the impact and effect of the physicochemical properties, temperature, pH, and surfactant chain length of the amino acid for detailed exploration of amino acids and surfactants in aqueous medium. The impact of cosolvent on self-aggregation, critical micelle concentration (CMC), and binding affinity with other biomolecules, as well as amino acid−surfactant interactions, are the epicenters. The results show that increasing the temperature causes negative enthalpy for ionic surfactants and micellization, implying that micellization and amino acids are thermodynamically spontaneous and exothermic, accompanied by positive entropy. As these physicochemical studies are additive, the amino acid and ionic surfactant interactions provide clues on protein unfolding and denaturation under different media, which further changes with a change in physiological conditions like pH, cosolvent, chain length, and temperature. On varying the pH, the net charge of the amino acid also changes and, subsequently, the binding efficiency of the amino acids to the surfactants. The presence of cosolvent causes a lowering in the hydrophobic chain, which changes the surfactant's CMC. At a reduced CMC, the hydrophobic characteristic of amino acid−surfactant associations is amplified, leading to rapid denaturation of proteins that act as propulsion under the influence of extended chain surfactants. Amino acids are one of the most intriguing classes of chemicals that produce high inhibitory efficacy. Amino acids are also a component of proteins and therefore, found in a significant part of the human body, further making them a promising candidate as corrosion inhibitors. In this review article, authors have also focused on the collection and investigation for application of amino acid−surfactant interactions in corrosion inhibition. Various predictive studies/in silico studies are also reported by many research groups, such as density functional theory (DFT) calculations and molecular dynamics simulations to obtain tentative electronic, structural, and physiochemical characteristics like energies of the highest occupied molecular orbitals and lowest unoccupied molecular orbitals, binding energy, Gibb's free energy, electronegativity, polarizability, and entropy. In silico studies are helpful for the mechanism predictions of the process occurring on metal surfaces.

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“…Наблюдаемые изменения в спектрах поглощения и флуоресценции исследуемых красителей, проявляющиеся в смещении максимумов и росте интенсивности при концентрации ДДС≥ККМ, связаны с эффектом сольватохромии [17,18], который указывает на локализацию молекул красителей в неполярной среде мицелл, направленную гидрофобной частью внутрь оболочки мицеллы за счет гидрофобных взаимодействий. Взаимодействие катионных красителей с анионными ПАВ может также происходить за счет водородных связей посредством молекул воды, либо за счет электростатического взаимодействия через отрицательно заряженные группы красителя −SO 3 − и −COO − .…”

Section: результаты и обсуждениеunclassified

Kомплексообразование Некоторых Оксазиновых Красителей В Водных Растворах Поверхностно-Активных Веществ

Ярмухамедов¹,

Курталиев²,

Джамалова³

et al. 2022

УФЖ

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Методами стационарной и время-разрешенной флуоресцентной спектроскопии изучено комплексообразование красителей нильского синего ацетата (НСА) и оксазина 1 (ОК1) с додецилсульфатом натрия (ДДС) и Тритоном X-100 (TX-100). Установлено, что при введении предмицеллярных концентраций ДДС в растворе образуются ионные пары между НСА и ДДС с последующим переходом в нелюминесцирующие димеры. На основе квантово-химических расчетов и измерения времени жизни возбужденного состояния показано, что молекулы красителей взаимодействуют с ДДС и ТХ-100 как с внутренней частью мицеллы посредством гидрофобных взаимодействий, так и с внешней поверхностью мицелл за счет электростатического взаимодействия. Установлено, что растворы образовавшихся комплексов краситель-ПАВ более стабильны по сравнению с водными растворами этих же красителей.

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Spectrophotometric study of the sodium dodecyl sulfate in the presence of methylene blue in the methanol–water mixed solvent system

Cited by 24 publications

References 79 publications

Interaction of Methyl Red with Cetylpyridinium Chloride in Methanol-Water System

Interaction of Methyl Red with Cetylpyridinium Chloride in Methanol-Water System

A Review on Interactions between Amino Acids and Surfactants as Well as Their Impact on Corrosion Inhibition

Kомплексообразование Некоторых Оксазиновых Красителей В Водных Растворах Поверхностно-Активных Веществ

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