Solubilization of polycyclic aromatic hydrocarbons in structurally different gemini and monomeric surfactants: A comparative study

Yadav, Toshikee; Kumar, Birendra; Lakra, Jyotsna; Satnami, Manmohan L.; Tiwari, Amit K.; Saha, Sarani; Ghosh, Kallol K.

doi:10.1016/j.molliq.2015.01.015

Cited by 29 publications

(11 citation statements)

References 52 publications

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“…In the case of CDEEAB and CDMEAB, both have the same carbon chain length, counterion (Br − ), and ethanolic group. CDEEAB shows a lower CMC value because of the presence of two ethyl head groups, thus increasing the chain length (Yadav et al, ) and forming micelles at lower concentrations due to the well‐defined hydrophobic effect.…”

Section: Resultsmentioning

confidence: 99%

Imidazolium‐Based Ionic Liquid as Modulator of Physicochemical Properties of Cationic, Anionic, Nonionic, and Gemini Surfactants

Kumar

Banjare

Yadav

et al. 2018

J Surfact & Detergents

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The aggregation morphology of 2 cationic surfactants (cetyldimethylethanolammonium bromide and cetyldiethylethanolammonium bromide), an anionic surfactant (sodium dodecylbenzenesulfonate), a nonionic surfactant (Triton X‐100), and 2 gemini surfactants (16‐4‐16,2Br−[butanediyi‐1,4‐bis(dimethyldohexylammonium bromide)] and 16‐6‐16,2Br−[hexanediyi‐1,6‐bis(dimethyldohexylammonium bromide)]) in the presence of the ionic liquid (IL) 1‐ethyl‐3‐methylimidazoliumbromide [Emim][Br] is studied using various techniques such as surface tension, conductivity, and UV–visible and fluorescence spectroscopy. Increasing the concentration of [Emim][Br] results in a decrease in the critical micelle concentration (CMC) value of the surfactants. Various interfacial properties, namely the surface excess concentration (Гmax), minimum area per molecule at the air–water interface (Amin), and surface pressure at the CMC (πcmc), as well as the thermodynamic parameters such as free energy of the given air/water interface (Gmins), Gibbs free energy of micelle formation (normalΔGm°), Gibbs free energy of micellization per alkyl tail (normalΔGnormalm,tail°), Gibbs energy of transfer (normalΔGtrans°), and standard free energy of adsorption (normalΔGads°) were also investigated. The aggregation number (Nagg) was determined by the fluorescence method. It was observed that Nagg decreased with increasing weight‐percent of the IL.

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Section: Resultsmentioning

confidence: 99%

Imidazolium‐Based Ionic Liquid as Modulator of Physicochemical Properties of Cationic, Anionic, Nonionic, and Gemini Surfactants

Kumar

Banjare

Yadav

et al. 2018

J Surfact & Detergents

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“…Солюбилизационная емкость ТФФБ-n была исследована по отношению к гидрофобным красителям Оранж ОТ [45] и Судан I [47], к полициклическим ароматическим углеводородам (фенантре-ну, флуорену и аценафтену) [52]. Регулировать солюбилизирующие свойства ТФФБ позволяет добавка гидротропов, например холина хлористого, что отражается в увеличении растворимости Судана I [53].…”

Section: супрамолекулярные системы на основе катионных пав: влияние пunclassified

Polyfunctional Nanosystems on Amphiphilic and Hybrid Platform: Self-Assembly, Mesogenic Properties and Application

Zhil’tsova¹,

Ibatullina²,

Mirgorodskaya³

et al. 2020

Liq. Cryst. and their Appl.

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Обзор посвящен анализу современных публикаций в области самоорганизации амфифильных соединений, формирования полифункциональных наносистем различной морфологии, их прикладного потенциала в нано-и биотехнологиях. Рассмотрены самоорганизующиеся системы на основе амфифильных соединений, преимущественно катионных ПАВ, а также на гибридной платформе металл/амфифил. Для серии катионных ПАВ проведен анализ влияния структуры головной группы на функциональную активность (солюбилизирующие, каталитические, антимикробные свойства). Продемонстрированы перспективы их использования в качестве мицеллярных наноконтейнеров для гидрофобных спектральных зондов и лекарственных средств, невирусных векторов и антимикробных препаратов. Обсуждены гибридные системы на амфифильной платформе, в том числе металломицеллярные композиции, включающие металлы различной природы, установлена корреляция структура-активность при варьировании структуры ПАВ и природы металла. Отдельный раздел посвящен металломезогенам на амфифильной платформе, разработке наноматериалов различного назначения на их основе, применению в биомедицине, оптике, катализе. Спецификой таких систем является комбинация свойств, типичных для ПАВ (самоорганизация и поверхностная активность), и особенностей, характерных для координационных соединений (окислительно-восстановительные, каталитические, магнитные и оптические свойства). Введение иона металла может способствовать увеличению температурного интервала и концентрационной области существования мезофаз. Дополнительные возможности расширения морфологического поведения и функциональной активности предоставляет использование макроциклической матрицы, позволяющей создавать новые жидкокристаллические материалы.

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“… 31 The dual nature of the surfactant (i.e., hydrophobic and hydrophilic) gives rise to various extensive properties in the solution, like “self-assembly” also known as micelles and the concentration at which this phenomenon occurs is called critical micelle concentration (CMC). 32 , 33 The hydrophobic alkyl chain of the surfactant is oriented away from the aqueous solvent media, forming the micellar core, and the head group of the surfactant is located toward the bulk aqueous media. 34 The nature of the surfactant, additive, and temperature strongly influence the micellization behavior of the surfactant and hence the CMC and the shape of the micelles.…”

Section: Introductionmentioning

confidence: 99%

Micellization Behavior of Conventional Cationic Surfactants within Glycerol-Based Deep Eutectic Solvent

Banjare

Behera

et al. 2020

ACS Omega

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The aggregation behavior of two cationic surfactants, i.e., cetyldimethylethanolammonium bromide (CDMEAB) and cetyltributylphosphonium bromide (CTBPB), within an aqueous deep eutectic solvent (DES) is studied. The synthesized DES is composed of 1:2 mole ratio of choline chloride and glycerol and is further characterized by Fourier transform infrared (FTIR) and 1 H NMR spectroscopy techniques. The critical micellar concentration (CMC), micellar size, and intermolecular interaction in surfactants within Gly-based DES solutions are investigated by various techniques including surface tension, conductivity, fluorescence, dynamic light scattering (DLS), FTIR, 1 H NMR, and two-dimensional (2D) nuclear Overhauser effect spectroscopy (NOESY). The various interfacial properties and thermodynamic parameters are determined in the presence of 5 wt % glyceline (Gly)-based DES in an aqueous solution. The CMC, aggregation number ( N agg ), and Stern–Volmer constant ( K sv ) have also been determined by a steady-state fluorescence method. DLS is used to obtain information regarding the size of the aggregates formed by the cationic surfactants in DES solutions. FTIR spectroscopy is used to study the surfactant–DES interactions that tune the micellar structure of the surfactants within the Gly-based DES solution. The functional groups involved in the interactions (H-bonding and electrostatic) are the head groups (HO–CH 2 –CH 2 –N + ion for CDMEAB and quaternary phosphonium (P + ) ion for CTBPB) of the surfactants with the −OH-containing Gly DES. The hydrophobic moieties are involved in the hydrophobic interactions. The 1 H NMR data show that differences in chemical shifts can provide significant information about the interactions taking place within the system. 1 H NMR and NOESY techniques are further employed to strengthen our claim on the feasible structural arrangements within the aqueous surfactant–DES self-assembled structures. It is observed that both the cationic surfactants, i.e., CDMEAB and CTBPB, form self-assembled nanostructures in the Gly-based DES solutions. The present results are expected to be useful for colloidal solutions of DES and their mixtures with water.

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Solubilization of polycyclic aromatic hydrocarbons in structurally different gemini and monomeric surfactants: A comparative study

Cited by 29 publications

References 52 publications

Imidazolium‐Based Ionic Liquid as Modulator of Physicochemical Properties of Cationic, Anionic, Nonionic, and Gemini Surfactants

Imidazolium‐Based Ionic Liquid as Modulator of Physicochemical Properties of Cationic, Anionic, Nonionic, and Gemini Surfactants

Polyfunctional Nanosystems on Amphiphilic and Hybrid Platform: Self-Assembly, Mesogenic Properties and Application

Micellization Behavior of Conventional Cationic Surfactants within Glycerol-Based Deep Eutectic Solvent

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